阅读说明：本技术 一种菲克皮用兔配套系育种方法 (Breeding method of rabbit mating line for fick fur ) 是由 *** 刘宁 张飞可 于 2020-05-29 设计创作，主要内容包括：本发明公开了一种菲克皮用兔配套系育种方法,包括如下步骤：a.首先选择A系的公、母白色獭兔,B系的公、母白色獭兔,C系的公、母八点黑獭兔,D系的公、母八点黑獭兔作为基础群；b.分别在A、B、C、D系獭兔内部进行提纯、杂交、创新；c.分别在A、B、C、D系獭兔内部进行横交、固定；d.分别在A、B、C、D系獭兔内部进行选育、提高；e.将A、B、C、D四系獭兔进行配合力测定；f.分别将A、B、C、D系獭兔进行扩群、制种；g.将A系獭兔作为父系,B系獭兔作为母系,杂交得到AB系獭兔,将C系獭兔作为父系,D系獭兔作为母系,杂交得到CD系獭兔；h.将AB系獭兔与CD系獭兔进行杂交,得到商品代,即菲克皮用兔。(The invention discloses a breeding method of a matched line of rabbits for fick fur, which comprises the following steps: a. firstly, selecting male and female white rex rabbits of A series, male and female white rex rabbits of B series, male and female eight-point black rex rabbits of C series and male and female eight-point black rex rabbits of D series as a basic group; b. respectively purifying, hybridizing and innovating in A, B, C, D series rex rabbits; c. respectively crossing and fixing in A, B, C, D rex rabbit; d. respectively breeding and improving in A, B, C, D series rex rabbits; e. measuring the combining ability of A, B, C, D quadruply rex rabbits; f. respectively carrying out colony expanding and seed production on A, B, C, D rex rabbits; g. hybridizing the A-series rex rabbits as a father line and the B-series rex rabbits as a mother line to obtain AB-series rex rabbits, hybridizing the C-series rex rabbits as the father line and the D-series rex rabbits as the mother line to obtain CD-series rex rabbits; h. and hybridizing the AB series rex rabbits and the CD series rex rabbits to obtain a commercial generation, namely the Fick fur rabbits.)

1. A breeding method of a matched line of a rabbit for fick fur is characterized in that: the method comprises the following steps:

firstly, selecting male and female white rex rabbits of A series, male and female white rex rabbits of B series, male and female eight-point black rex rabbits of C series and male and female eight-point black rex rabbits of D series as a basic group;

respectively purifying, hybridizing and innovating in A, B, C, D series rex rabbits;

respectively crossing and fixing in A, B, C, D rex rabbit;

respectively breeding and improving in A, B, C, D series rex rabbits;

measuring the combining ability of A, B, C, D quadruply rex rabbits;

respectively carrying out colony expanding and seed production on A, B, C, D rex rabbits;

hybridizing the A-series rex rabbits as a father line and the B-series rex rabbits as a mother line to obtain AB-series rex rabbits, hybridizing the C-series rex rabbits as the father line and the D-series rex rabbits as the mother line to obtain CD-series rex rabbits;

hybridizing the AB series rex rabbits and the CD series rex rabbits to obtain a commercial generation, namely the Fick skin rabbits;

wherein:

the A-series rex rabbits are strong in disease resistance, fast in growth speed, high in feed conversion rate, high in dressing percentage, white hair of the whole body, compact and flat in hair type, pink in eyeball color, delicate and compact in body shape, round in body trunk width, medium-sized and beautiful in head shape, and the litter size of female rabbits: litter size of 5 litters per litter, litter size of 6 litters per litter, litter size of 7 litters per litter, average litter size of 6 litters per litter, litter weight of 1300g of 3-week-old litter size of baby rabbits, weight of 4-week-old litter size: 650g of male rabbit, 600g of female rabbit, 13 weeks old body weight: 1500g male rabbit, 1500g female rabbit, 1 year of age weight: male rabbit 4kg, female rabbit 3.5kg, adult body weight: 4.5kg of male rabbits and 4kg of female rabbits, wherein the body length and the chest circumference of the adult male rabbits are 45cm and 35cm respectively, the body length and the chest circumference of the adult female rabbits are 40cm and 33cm respectively, the survival rate of the 22-week-old rabbits is 80%, and the quality of the 22-week-old hairs is as follows: the density of the quilt wool is 8500 roots/cm²The length of villus is 1.6-1.7cm, the length of gun hair is 2.5-2.6cm, the proportion of gun hair is 8%, and the area of the raw skin is 900cm after the adult skin grows up²The length of the tufts is 1.6-1.7cm, and the number of tufts is 8500 tufts/cm²Tensile Strength 12N/mm²Tear Strength 30N/mm²The load elongation is 35 percent, and the shrinkage temperature is 86 ℃;

the rex rabbits of the B system have strong disease resistance, fast growth speed, high feed conversion rate, high reproductive capacity, good maternal performance, coarse feeding resistance, white hair on the whole body, compact and flat hair shape, pink eyeball color, delicate and compact body shape, round body width, light and elegant head shape, and litter size of female rabbits: the litter size of the first fetus is 6 per litter, the litter size of the second fetus is 7 per litter, the litter size of the third fetus is 8 per litter, the average litter size of the third fetus is 7 per litter, the litter weight of the 3-week-old litter of the newborn rabbit is 1400g, and the weight of the 4-week-old litter: 600g of male rabbit, 580g of female rabbit, 13 weeks old body weight: 1400g of male rabbit, 1350g of female rabbit, 1 year of age: 3.5kg of male rabbit, 3.25kg of female rabbit, adult body weight: 4kg of male rabbits and 3.5kg of female rabbits, the body length and the chest circumference of the adult male rabbits are 42cm and 31cm respectively, the body length and the chest circumference of the adult female rabbits are 38cm and 30cm respectively, the survival rate of the 22-week-old rabbits is 85%, and the quality of the 22-week-old quilt hair is as follows: the density of the quilt wool is 8500 roots/cm²The length of villus is 1.6-1.7cm, the length of gun hair is 2.5-2.6cm, the proportion of gun hair is 7%, and the area of the raw skin is 800cm after the adult skin grows up²The length of the tufts is 1.6-1.7cm, and the number of tufts is 8500 tufts/cm²Tensile Strength of 12N/mm²Tear Strength 30N/mm²The load elongation is 35 percent, and the shrinkage temperature is 86 ℃;

the C-series rex rabbits have the advantages of high growth speed, high feed conversion rate, high dressing percentage, white hair of the whole body, black or gray color at the tip, ears, tails and tail ends of four limbs, compact and flat hair type, pink eyeball color, delicate and compact body shape, wide body, medium-sized head shape, beautiful appearance and litter size of female rabbits: the litter size of the first fetus is 6 per litter, the litter size of the second fetus is 7 per litter, the litter size of the third fetus is 8 per litter, the average litter size of the third fetus is 7 per litter, the litter weight of the 3-week-old litter of the newborn rabbit is 1400g, and the weight of the 4-week-old litter: 600g of male rabbit, 580g of female rabbit, 13 weeks old body weight: 1400g of male rabbit, 1350g of female rabbit, 1 year of age: 3.5kg of male rabbit, 3.25kg of female rabbit, adult body weight: 4kg of male rabbits and 3.5kg of female rabbits, the body length and the chest circumference of the adult male rabbits are 42cm and 31cm respectively, the body length and the chest circumference of the adult female rabbits are 38cm and 30cm respectively, the survival rate of the 22-week-old rabbits is 90%, and the quality of the 22-week-old quilt hair is as follows: the density of the quilt hair is 8700 pieces/cm²The length of villus is 1.6-1.7cm, the length of gun hair is 2.5-2.6cm, the ratio of gun hair is 6%, and the area of the raw skin is 800cm after the adult skin grows up²The length of the tufts is 1.6-1.7cm, the tufts8700 roots/cm²Tensile Strength of 12N/mm²Tear Strength 30N/mm²The load elongation is 35 percent, and the shrinkage temperature is 86 ℃;

the D-series rex rabbits have the advantages of high growth speed, high feed conversion rate, high reproductive capacity, good maternal performance, coarse feeding resistance, strong disease resistance, white hair of the whole body, black or gray color at the tip of the mouth, ears, tails and extremities, compact and flat hair shape, pink eyeball color, delicate and compact body shape, round body width, light and beautiful head shape and litter size of female rabbits: the litter size of the first fetus is 7 per litter, the litter size of the second fetus is 8 per litter, the litter size of the third fetus is 9 per litter, the average litter size of the third fetus is 8 per litter, the litter weight of the 3-week-old baby rabbit is 1500g, and the weight of the 4-week-old baby rabbit is: 600g of male rabbit, 580g of female rabbit, 13 weeks old body weight: 1400g of male rabbit, 1350g of female rabbit, 1 year of age: 3.25kg of male rabbit, 3kg of female rabbit, adult body weight: 3.5kg of male rabbits and 3kg of female rabbits, wherein the body length and the chest circumference of the adult male rabbits are 39cm and 30cm respectively, the body length and the chest circumference of the adult female rabbits are 36cm and 29cm respectively, the survival rate of the 22-week-old rabbits is 95%, and the quality of the 22-week-old hairs: the density of the quilt hair is 8700 pieces/cm²The length of villus is 1.6-1.7cm, the length of gun hair is 2.5-2.6cm, the ratio of gun hair is 6%, and the area of the raw skin is 700cm after the adult²The length of the tufts is 1.6-1.7cm, and the number of tufts is 8700/cm²Tensile Strength of 12N/mm²Tear Strength 30N/mm²Elongation under load of 35% and shrinkage temperature of 86 ℃.

2. The method of claim 1, wherein the breeding method of the matched line of the fickian fur rabbits comprises the following steps: a of the basic group in step a is: the male white rex rabbits are 15, the female white rex rabbits are 135, and the B line is as follows: 15 male white rex rabbits and 135 female white rex rabbits, wherein the C line is as follows: the number of male eight-point black otter rabbits is 20, the number of female eight-point black otter rabbits is 180, and the D series: the number of male eight-point black otter rabbits is 20, and the number of female eight-point black otter rabbits is 180.

3. The method of claim 1, wherein the breeding method of the matched line of the fickian fur rabbits comprises the following steps: the commercial generation has white hair, black or gray mouth tip, ears, tail and extremities, compact and flat hair shape, pink eyeball color, fine and compact body shape, round body width, medium-sized head shape, and 3-week-old young rabbitLitter weight 1500g,4 weeks old body weight: 650g of male rabbit, 620g of female rabbit, 13 weeks old body weight: 1500g male rabbit, 1450g female rabbit, 1 year of age weight: male rabbit 4kg, female rabbit 3.5kg, adult body weight: 4.5kg of male rabbits and 4kg of female rabbits, wherein the body length and the chest circumference of the adult male rabbits are 45cm and 35cm respectively, the body length and the chest circumference of the adult female rabbits are 40cm and 33cm respectively, the survival rate of the 22-week-old rabbits is 95%, and the quality of the 22-week-old hairs is as follows: the density of the quilt hair is 8700 pieces/cm²The length of villus is 1.6-1.7cm, the length of gun hair is 2.5-2.6cm, the proportion of gun hair is 5%, and the area of the raw skin is 900cm after the adult skin grows up²The length of the tufts is 1.6-1.7cm, and the number of tufts is 8700/cm²Tensile Strength of 12N/mm²Tear Strength 30N/mm²Elongation under load of 35% and shrinkage temperature of 86 ℃.

4. The method of claim 1, wherein the breeding method of the matched line of the fickian fur rabbits comprises the following steps: the main indexes of the commercial generation are 2.3kg of body weight at 19 weeks and 800cm of area of the hide at 19 weeks²。

5. The method of claim 1, wherein the breeding method of the matched line of the fickian fur rabbits comprises the following steps: step a, building a basic group, wherein female individuals needing to be selected by the B line need to meet the following requirements: 8 +/-1 litter in the second litter nest, 1400g of lactation capacity, 4-5 pairs of effective nipples, good maternal quality, strong disease resistance and large body size; the D line female also needs to satisfy: 8 +/-1 litter in the two-litter nest, 1400g of lactation capacity, 4-5 pairs of effective nipples, good maternal quality, strong disease resistance and large body size.

6. The method of claim 1, wherein the breeding method of the matched line of the fickian fur rabbits comprises the following steps: in the whole process, the rabbit group is strictly locked and bred, and in the locked and bred, a line building method combining inbred line building and group subculture breeding is adopted.

7. The method of claim 6, wherein the method comprises the following steps: the inbred line and population subculture breeding combined line establishing method comprises the steps of firstly adopting a male parent and a female parent to carry out parent-child inbreeding, and adopting half-sib inbreeding to accelerate gene homozygosis if the number of heterozygotes in a population is still large before step c is carried out.

8. The method of claim 1, wherein the breeding method of the matched line of the fickian fur rabbits comprises the following steps: in the whole process, a backup rabbit group is also bred, and after breeding, the rex rabbits with the required genotype are determined to be supplemented into the backup rabbit group according to the character performance.

9. The method of claim 1, wherein the breeding method of the matched line of the fickian fur rabbits comprises the following steps: in the whole process, rex rabbits are required to be selected according to growth and development traits, the weaning weight of 5 weeks is more than 600g, the weaning weight of 13 weeks is more than 1850g, the weaning weight of 22 weeks is more than 2900g, the rex rabbits are primarily screened when weaning is carried out at the age of 5 weeks, the rex rabbits are strictly eliminated when the rex rabbits are 13 weeks old, the rex rabbits are finally selected by combining the number of nipples before the individuals are primarily matched, the seed reserving rate of male rabbits is 20%, and the female rabbits are;

for fur property selection, individual selection was performed in stages, sensory evaluation was performed at 5-week-old weaning and 13-week-old, and the density of the fur, the fineness of the fur fiber, and the rough fur ratio were measured by biopsy at 22-week-old.

10. The method of claim 1, wherein the breeding method of the matched line of the fickian fur rabbits comprises the following steps: in the whole process, the feeding standard of each generation is unchanged, data are strictly recorded, a breeding database is established, and the heritability and the repeatability of the propagation character, the growth character and the fur character are calculated by adopting a half-sib family model.

Technical Field

The invention belongs to the technical field of rabbit breeding, and particularly relates to a method for breeding a matched line of rabbits for fick fur.

Background

At present, the breeding industry hopes to develop the heterosis through hybridization to breed poultry and livestock with excellent characters, but the hybridization is always blind, because male parents and female parents have excellent characters, and filial generations can always show excellent characters, so that the problem of how to stably culture commercial generations with excellent characters becomes a big problem of the breeding industry.

In the breeding industry, rabbit breeding is a breeding project with low investment, short period, easy breeding and great profit, so that farmers who breed rabbits are increasing, and beaver rabbits are better in the rabbits, and people always want to select the beaver rabbits with excellent properties for breeding.

Disclosure of Invention

In order to solve the problems in the background art and achieve the aim of obtaining the fur rex rabbit with excellent characters, the invention provides a breeding method of a matched line of the fick fur rabbit.

A breeding method of a matched line of rabbits for fick fur comprises the following steps:

a. firstly, selecting male and female white rex rabbits of A series, male and female white rex rabbits of B series, male and female eight-point black rex rabbits of C series and male and female eight-point black rex rabbits of D series as a basic group;

b. respectively purifying, hybridizing and innovating in A, B, C, D series rex rabbits;

c. respectively crossing and fixing in A, B, C, D rex rabbit;

d. respectively breeding and improving in A, B, C, D series rex rabbits;

e. measuring the combining ability of A, B, C, D quadruply rex rabbits;

f. respectively carrying out colony expanding and seed production on A, B, C, D rex rabbits;

g. hybridizing the A-series rex rabbits as a father line and the B-series rex rabbits as a mother line to obtain AB-series rex rabbits, hybridizing the C-series rex rabbits as the father line and the D-series rex rabbits as the mother line to obtain CD-series rex rabbits;

h. hybridizing the AB series rex rabbits and the CD series rex rabbits to obtain a commercial generation, namely the Fick skin rabbits;

wherein:

the A-series rex rabbits are strong in disease resistance, fast in growth speed, high in feed conversion rate, high in dressing percentage, white hair of the whole body, compact and flat in hair type, pink in eyeball color, delicate and compact in body shape, round in body trunk width, medium-sized and beautiful in head shape, and the litter size of female rabbits: the first fetus has a litter size of 5, the second fetus has a litter size of 6, the third fetus has a litter size of 7, and the third fetus has a litter size of 7Average litter size of 6 per litter, litter weight of 1300g for 3-week-old litter of baby rabbits, body weight of 4-week-old litter: 650g of male rabbit, 600g of female rabbit, 13 weeks old body weight: 1500g male rabbit, 1500g female rabbit, 1 year of age weight: male rabbit 4kg, female rabbit 3.5kg, adult body weight: 4.5kg of male rabbits and 4kg of female rabbits, wherein the body length and the chest circumference of the adult male rabbits are 45cm and 35cm respectively, the body length and the chest circumference of the adult female rabbits are 40cm and 33cm respectively, the survival rate of the 22-week-old rabbits is 80%, and the quality of the 22-week-old hairs is as follows: the density of the quilt wool is 8500 roots/cm²The length of villus is 1.6-1.7cm, the length of gun hair is 2.5-2.6cm, the proportion of gun hair is 8%, and the area of the raw skin is 900cm after the adult skin grows up²The length of the tufts is 1.6-1.7cm, and the number of tufts is 8500 tufts/cm²Tensile Strength of 12N/mm²Tear Strength 30N/mm²The load elongation is 35 percent, and the shrinkage temperature is 86 ℃;

the rex rabbits of the B system have strong disease resistance, fast growth speed, high feed conversion rate, high reproductive capacity, good maternal performance, coarse feeding resistance, white hair on the whole body, compact and flat hair shape, pink eyeball color, delicate and compact body shape, round body width, light and elegant head shape, and litter size of female rabbits: the litter size of the first fetus is 6 per litter, the litter size of the second fetus is 7 per litter, the litter size of the third fetus is 8 per litter, the average litter size of the third fetus is 7 per litter, the litter weight of the 3-week-old litter of the newborn rabbit is 1400g, and the weight of the 4-week-old litter: 600g of male rabbit, 580g of female rabbit, 13 weeks old body weight: 1400g of male rabbit, 1350g of female rabbit, 1 year of age: 3.5kg of male rabbit, 3.25kg of female rabbit, adult body weight: 4kg of male rabbits and 3.5kg of female rabbits, the body length and the chest circumference of the adult male rabbits are 42cm and 31cm respectively, the body length and the chest circumference of the adult female rabbits are 38cm and 30cm respectively, the survival rate of the 22-week-old rabbits is 85%, and the quality of the 22-week-old quilt hair is as follows: the density of the quilt wool is 8500 roots/cm²The length of villus is 1.6-1.7cm, the length of gun hair is 2.5-2.6cm, the proportion of gun hair is 7%, and the area of the raw skin is 800cm after the adult skin grows up²The length of the tufts is 1.6-1.7cm, and the number of tufts is 8500 tufts/cm²Tensile Strength of 12N/mm²Tear Strength 30N/mm²The load elongation is 35 percent, and the shrinkage temperature is 86 ℃;

the C-series rex rabbits have the advantages of high growth speed, high feed conversion rate, high dressing percentage, white hair of the whole body, black or gray color at the tip, ears, tails and tail ends of four limbs, compact and flat hair type, pink eyeball color, delicate and compact body shape, wide body, medium-sized head shape, beautiful appearance and litter size of female rabbits: the first fetus has a litter size of 6 per litter and the second fetus has a litter size of 6 per litter7 litter, 8 litter size of three births, 7 average litter size of three births, 1400g litter weight of 3-week-old litter of litter rabbit, 4-week-old body weight: 600g of male rabbit, 580g of female rabbit, 13 weeks old body weight: 1400g of male rabbit, 1350g of female rabbit, 1 year of age: 3.5kg of male rabbit, 3.25kg of female rabbit, adult body weight: 4kg of male rabbits and 3.5kg of female rabbits, the body length and the chest circumference of the adult male rabbits are 42cm and 31cm respectively, the body length and the chest circumference of the adult female rabbits are 38cm and 30cm respectively, the survival rate of the 22-week-old rabbits is 90%, and the quality of the 22-week-old quilt hair is as follows: the density of the quilt hair is 8700 pieces/cm²The length of villus is 1.6-1.7cm, the length of gun hair is 2.5-2.6cm, the ratio of gun hair is 6%, and the area of the raw skin is 800cm after the adult skin grows up²The length of the tufts is 1.6-1.7cm, and the number of tufts is 8700/cm²Tensile Strength of 12N/mm²Tear Strength 30N/mm²The load elongation is 35 percent, and the shrinkage temperature is 86 ℃;

the D-series rex rabbits have the advantages of high growth speed, high feed conversion rate, high reproductive capacity, good maternal performance, coarse feeding resistance, strong disease resistance, white hair of the whole body, black or gray color at the tip of the mouth, ears, tails and extremities, compact and flat hair shape, pink eyeball color, delicate and compact body shape, round body width, light and beautiful head shape and litter size of female rabbits: the litter size of the first fetus is 7 per litter, the litter size of the second fetus is 8 per litter, the litter size of the third fetus is 9 per litter, the average litter size of the third fetus is 8 per litter, the litter weight of the 3-week-old baby rabbit is 1500g, and the weight of the 4-week-old baby rabbit is: 600g of male rabbit, 580g of female rabbit, 13 weeks old body weight: 1400g of male rabbit, 1350g of female rabbit, 1 year of age: 3.25kg of male rabbit, 3kg of female rabbit, adult body weight: 3.5kg of male rabbits and 3kg of female rabbits, wherein the body length and the chest circumference of the adult male rabbits are 39cm and 30cm respectively, the body length and the chest circumference of the adult female rabbits are 36cm and 29cm respectively, the survival rate of the 22-week-old rabbits is 95%, and the quality of the 22-week-old hairs: the density of the quilt hair is 8700 pieces/cm²The length of villus is 1.6-1.7cm, the length of gun hair is 2.5-2.6cm, the ratio of gun hair is 6%, and the area of the raw skin is 700cm after the adult²The length of the tufts is 1.6-1.7cm, and the number of tufts is 8700/cm²Tensile Strength of 12N/mm²Tear Strength 30N/mm²Elongation under load of 35% and shrinkage temperature of 86 ℃. Overall, the A, B line trait was more excellent in productivity, body weight, disease resistance and growth rate, and the C, D line trait was more excellent in litter size, lactation ability, nurse ability and rough feeding resistance.

Further, in step a, the A series of the basic group: the male white rex rabbits are 15, the female white rex rabbits are 135, and the B line is as follows: 15 male white rex rabbits and 135 female white rex rabbits, wherein the C line is as follows: the number of male eight-point black otter rabbits is 20, the number of female eight-point black otter rabbits is 180, and the D series: the number of male eight-point black otter rabbits is 20, and the number of female eight-point black otter rabbits is 180.

Further, the commercial generation has white hair on the whole body, the tip of the mouth, the ears, the tail and the tail ends of the four limbs are black or gray, the hair shape is compact and flat, the eyeball color is pink, the body shape is fine and compact, the body width is round, the head shape is medium and beautiful, the litter weight of 3 weeks old of the young rabbit is 1500g, and the weight of 4 weeks old of the young rabbit is as follows: 650g of male rabbit, 620g of female rabbit, 13 weeks old body weight: 1500g male rabbit, 1450g female rabbit, 1 year of age weight: male rabbit 4kg, female rabbit 3.5kg, adult body weight: 4.5kg of male rabbits and 4kg of female rabbits, wherein the body length and the chest circumference of the adult male rabbits are 45cm and 35cm respectively, the body length and the chest circumference of the adult female rabbits are 40cm and 33cm respectively, the survival rate of the 22-week-old rabbits is 95%, and the quality of the 22-week-old hairs is as follows: the density of the quilt hair is 8700 pieces/cm²The length of villus is 1.6-1.7cm, the length of gun hair is 2.5-2.6cm, the proportion of gun hair is 5%, and the area of the raw skin is 900cm after the adult skin grows up²The length of the tufts is 1.6-1.7cm, and the number of tufts is 8700/cm²Tensile Strength of 12N/mm²Tear Strength 30N/mm²Elongation under load of 35% and shrinkage temperature of 86 ℃.

Furthermore, the main indexes of the commercial generation are 2.3kg of body weight at 19 weeks and 800cm of area of the hide at 19 weeks²Under the standard feeding condition, 6.5 fetus piglets or more than 30 annual piglets are born, the lactation yield is 1350g, the survival rate at 13 weeks is 80%, under the farmer feeding condition, namely, under the condition that the number is small, free-ranging is carried out, and large-scale and standardized feeding is not carried out, 5.5 fetus piglets or 25 annual piglets are born, the lactation yield is 1200g, the survival rate at 13 weeks is 75%, and the weight at 22 weeks is 2.3 kg.

Further, in the step a, the establishment of the basic group, the female individuals to be selected by the B line need to meet the following requirements: 8 +/-1 litter in the second litter nest, 1400g of lactation capacity, 4-5 pairs of effective nipples, good maternal quality, strong disease resistance and large body size; the D line female also needs to satisfy: 8 +/-1 litter in the two-litter nest, 1400g of lactation capacity, 4-5 pairs of effective nipples, good maternal quality, strong disease resistance and large body size.

Furthermore, in the whole process, the rabbit group is strictly bred in a locked mode, and in the locked breeding, a line building method combining inbred line building and group subculture breeding is adopted.

Furthermore, the inbred line and population subculture breeding combined line establishing method comprises the steps of firstly adopting male parents and female parents to carry out parent-child inbreeding, and adopting half-sib inbreeding to accelerate gene homozygosis if heterozygotes are still more in the population before step c is carried out. The parent-offspring inbreeding is carried out on the male parent and the female parent, so that various genes of the basic group have expression opportunities, the diversity of the selection materials is increased, the group subculture breeding is carried out subsequently, the condition that the inbreeding coefficient of the group is increased too fast is avoided, and the excellent gene loss is prevented.

Furthermore, a backup rabbit group is bred in the whole process, and the rex rabbits with the required genotype are determined to be supplemented into the backup rabbit group according to the character performance after breeding. Because the rabbit group is strictly locked and bred, if the rabbit group cannot be hybridized continuously due to accidents and the like, the backup rabbit group can play a role. During breeding, if the phenotype and genotype of the offspring rex rabbits are expected, the parent rex rabbits can be supplemented into a backup rabbit group.

Further, the breeding method of the rabbit mating line for fick fur according to claim 1, characterized in that: in the whole process, rex rabbits are required to be selected according to growth and development traits, the weaning weight of 5 weeks is more than 600g, the weaning weight of 13 weeks is more than 1850g, the weaning weight of 22 weeks is more than 2900g, the rex rabbits are primarily screened when weaning is carried out at the age of 5 weeks, the rex rabbits are strictly eliminated when the rex rabbits are 13 weeks old, the rex rabbits are finally selected by combining the number of nipples and the like before the individuals are primarily matched, the seed reserving rate of male rabbits is 20%, and the female;

for fur property selection, individual selection was performed in stages, sensory evaluation was performed at 5-week-old weaning and 13-week-old, and the density of the fur, the fineness of the fur fiber, and the rough fur ratio were measured by biopsy at 22-week-old.

Furthermore, in the whole process, the feeding standard of each generation is unchanged, data are strictly recorded, a breeding database is established, and the heritability and the repeatability of the reproductive traits, the growth and development traits and the fur traits are calculated by adopting a half-sib family model.

In a whole, according to a breeding target, excellent individuals which accord with the breeding target and are particularly outstanding in a plurality of or a certain character are firstly brought into a basic group, the scale of the basic group is larger and better, more excellent genes can be enriched, the improvement of selection progress is facilitated, the breeding quality of strains is ensured, generally, one strain needs more than 15 male rabbits and 120 female rabbits in a scale, in addition, as the subsequent group subculture breeding is locked breeding, no foreign rabbits are generally introduced midway, and the quality of the strain performance selected in future completely depends on the genetic quality of the basic group, so the quality of the selected rabbits is particularly noticed in the selection process of the basic group.

In the process of selecting seeds, in order to ensure higher selection strength, each generation of rabbits continuously breed 2-3 litters, the most elegant individuals are selected as inheritors in later generations, the selection standard and method are kept consistent as much as possible in each generation, the selection strength is increased along with the increase of age, only poor individuals are eliminated in the early period, and the selection strength is increased along with the increase of age so as to improve the selection strength and accuracy. The breeding rabbits of the previous generation are transferred into a backup rabbit group after finishing the seed reservation, and few particularly excellent individuals are allowed to overlap the generation.

In the aspect of selection of reproductive traits, the reproductive traits such as litter size and conception rate are selected according to families, the families with low litter size are eliminated, the male rabbit and the female rabbit are not equally reserved, the mating of full siblings or half siblings is avoided as much as possible, and few particularly excellent individuals are allowed to be overlapped in generations.

In the aspect of breeding, the daily ration nutrition standard of breeding rabbits, replacement rabbits and growing rabbits is drawn up according to the American NRC breeding standard from the beginning of hybridization breeding, and the daily ration nutrition standard is basically unchanged in each generation.

Compared with the prior art, the technical scheme disclosed by the invention has the following beneficial effects:

1. compared with A-series white rex rabbits, the female rabbit fetus number of the Fick skin rabbit is more, the survival rate in 22 weeks is higher, the density of the 22-week-quilt hair is higher, the gun hair proportion is lower, the hair tuft number is more, the hair yield is more, meanwhile, the gun hair proportion is lower, and the fur quality is better.

2. Compared with B-series white rex rabbits, the Fick skin rabbits are heavier in adult weight, larger in body size and larger in raw skin area, meanwhile, the survival rate in 22 weeks is higher, the density of 22-week-old furs is higher, the proportion of gun hair is lower, the number of tufts is more, and the fur quality is better.

3. Compared with C-series eight-point black otter rabbits, the adult weight, the body size and the raw hide area of the Pherkish skin rabbits are heavier, the survival rate of 22 weeks old rabbits is higher, the gun hair proportion is lower, and the fur quality is better.

4. Compared with the D series eight-point black otter rabbit, the adult weight, the body size and the raw skin area of the fick fur rabbit are heavier, the gun hair ratio is lower, and the fur quality is better.

5. In general, the rabbits for fick skin have larger body shape and weight, larger area of raw skin, higher survival rate, higher gun hair ratio and more tufts, and the performance of both the final fur yield and the fur quality is better than that of the A, B, C, D four-base system.

Drawings

FIG. 1: a technical route chart of a breeding method of a matched line of a fickia carica.

Detailed Description

The embodiments of the present invention will be described in conjunction with the drawings in the specification, and the embodiments are disclosed for the purpose of illustrating the invention rather than limiting the invention, and all technical solutions which are simple to replace, combine and develop on the basis of the present invention shall fall within the protection scope of the present invention.