阅读说明：本技术 一种提高超期不发情后备母猪入群效率的处理方法 (Processing method for improving group entering efficiency of replacement gilts with no estrus exceeding period ) 是由 张家庆 卢清侠 陈俊峰 邢宝松 任巧玲 吕玲燕 申明 孙少琛 王献伟 高彬文 赵 于 2021-09-03 设计创作，主要内容包括：本发明公开了一种提高超期不发情后备母猪入群效率的处理方法,属于母猪繁殖技术领域。具体公开了：向270日龄以上未发情的后备母猪体内注射递胎素和同发素,在注射后的7天内,将出现静立反射的母猪转入生产群体中与断奶母猪进行混合饲喂、配种；后备母猪的基础日粮中添加有中药组合物及促卵泡发育组合物；对注射递胎素和同发素7天后仍未发情的后备母猪,还包括后续饲喂烯丙孕素、注射递胎素的步骤,对于仍未发情的母猪,还包括注射同发素的步骤。本发明将多种调控方式有机结合,不仅可以提高入群效率,还可以显著提高配种率及受胎率,节约了养殖成本,提高了养殖效益。(The invention discloses a processing method for improving the group-entering efficiency of a replacement gilt without estrus in a prolonged period, and belongs to the technical field of sow breeding. Specifically disclosed is: injecting a delivery agent and a co-agent into a reserved sow which is not oestrous for more than 270 days, and transferring the sow with the statically reflex into a production group within 7 days after injection to be mixed with a weaned sow for feeding and hybridization; the basic daily ration of the replacement gilt is added with the traditional Chinese medicine composition and the composition for promoting follicular development; the method also comprises the following steps of feeding altrenogest and injecting the oxytocin to the replacement gilts which are not estrous after 7 days of injecting the oxytocin and the isoestrogen, and also comprises the step of injecting the isoestrogen to the gilts which are not estrous. The invention organically combines various regulation and control modes, can improve the group entering efficiency, can obviously improve the hybridization rate and the conception rate, saves the culture cost and improves the culture benefit.)

1. A processing method for improving the group entry efficiency of a replacement gilt which is out of heat is characterized by comprising the following steps:

injecting a delivery agent and a co-agent into a reserved sow which is not oestrous for more than 270 days, and transferring the sow with the statically reflex into a production group within 7 days after injection to be mixed with a weaned sow for feeding and hybridization;

the basal diet of the replacement gilt is added with the traditional Chinese medicine composition and the follicle development promoting composition.

2. The method of claim 1, wherein the dose of said oxytocin is 0.075 mg/head and the dose of said oxytocin is PMSG 400IU + hCG 200IU + phosphate buffer for injection of 5ml per sow.

3. The method as claimed in claim 1, wherein the replacement gilt which is not in heat after 7 days of the administration of the oxytocin and the isomycin is fed with altrenogest and fed for 10 days, the last feeding is administered with the oxytocin, and the gilt which shows the stillbirth reflex is transferred to the production group for 5-7 days after the termination of the feeding of the altrenogest and mixed with the weaning sow for feeding and mating.

4. The method of claim 3 wherein altrenogest is fed at 15-25 mg/dose/day and the dose of oxytocin is 0.075-0.15 mg/dose.

5. The method as claimed in claim 3, wherein the gilt which is not in heat is stopped from feeding altrenogest for 5-7 days after the injection of altrenogest, and the gilt which shows the stationary reflex is transferred to a production group to be mixed with the weaned sow for feeding and mating on the 7 th day after the stop of the feeding of altrenogest.

6. The method of claim 5, wherein the syngeneic injection is administered to each sow at a dose of PMSG 400IU + hCG 200IU + phosphate buffer for injection of 5 ml.

7. The method of claim 1, wherein the traditional Chinese medicine composition comprises the following components in parts by mass: 60-80 parts of bupleurum, 100-120 parts of dodder, 180-200 parts of medlar, 100-120 parts of crude cattail, 60-80 parts of costus root, 120-150 parts of cornu cervi degelatinatum, 100-120 parts of glossy privet fruit, 100-120 parts of desertliving cistanche, 100-120 parts of angelica and 100-120 parts of chuanxiong rhizome.

8. The method of claim 7, wherein the amount of the herbal composition added is 3g/Kg based on daily basal diet.

9. The method of claim 1, wherein the follicle development promoting composition comprises the following mass of components, calculated on a daily basal diet basis: 0.1-0.3mg/kg of sodium selenite, 60-80mg/kg of zinc, 6-10mg/kg of folic acid, 80-100mg/kg of vitamin E, 1225-30 mu g/kg of vitamin B, 50-100mg/kg of lycopene, 100mg/kg of grape seed anthocyanin and 10-25mg/kg of astaxanthin.

10. The method according to any one of claims 1, 3 or 5, wherein the mating principle is: mating in the afternoon of the morning estrus, mating in the morning of the afternoon of the estrus, wherein the total number of sperms in each insemination is not less than 30 hundred million, the vitality is more than 0.65, the sperms of each sow in one estrus are infused 2 times, and the interval time is 10-12 h.

Technical Field

The invention relates to the technical field of sow breeding, in particular to a processing method for improving the group-entering efficiency of replacement gilts without estrus in excess.

Background

The sow is the source of the production of the live pig, and the fecundity of the sow is the core of the production level of the raised pig and whether high benefit can be obtained. Replacement gilts are more important in pig production, and low-production-performance gilts need to be replaced by the replacement gilts in a breeding farm at an annual update rate of about 40-60% so as to regulate and control the gestational age structure, health condition, production performance and the like of a swinery, so that the replacement gilts are directly related to the productivity of the breeding farm. In recent years, due to the problems of high elimination rate, low utilization rate and the like of replacement sows which do not estruse in the excess period (more than 270 days), great economic loss is brought to pig raising enterprises.

Batch production is an important mode of modern large-scale pig farm management, and the pig farm can realize full-in and full-out of swineries by adopting batch production, is favorable for epidemic prevention and disinfection, reduces cross infection of epidemic diseases, can effectively reduce labor intensity, and greatly improves labor production efficiency. In batch production, the replacement gilts usually stop progestational hormone in 2 days before the weaning date of the multiparous sows, about 90 percent of the replacement gilts and the weaned multiparous sows are estrated, bred, pregnant and delivered to form a new production group, so that batch management modes such as breeding, parturition and weaning are realized, but in actual production, some replacement gilts which do not estrate in an excess period are treated by the method, the pregnancy rate is low, the elimination ratio is high, and idle waste of equipment such as a birth bed and a nursing bed is caused.

Disclosure of Invention

The invention aims to provide a processing method for improving the group entry efficiency of replacement gilts which are out of heat in the excess period, so as to solve the problems in the prior art, thereby improving the group entry efficiency, obviously improving the mating rate and the conception rate and improving the breeding benefit.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a processing method for improving the group entry efficiency of replacement gilts which do not estruse in excess, which comprises the following steps:

injecting a delivery agent and a co-agent into a reserved sow which is not oestrous for more than 270 days, and transferring the sow with the statically reflex into a production group within 7 days after injection to be mixed with a weaned sow for feeding and hybridization;

the basal diet of the replacement gilt is added with the traditional Chinese medicine composition and the follicle development promoting composition.

Further, the dose of the oxytocin is 0.075mg per head, and the injection dose of each sow of the oxytocin is PMSG 400IU + hCG 200IU + phosphate buffer solution for injection is 5 ml.

Further, the replacement gilts which are not estrus after 7 days of the injection of the oxytocin and the isohormone are fed with the altrenogest for 10 days, the oxytocin is injected during the last feeding, and the gilts which show the stillness reflex are transferred into a production group for mixed feeding and hybridization with the weaned sows after 5-7 days after the feeding of the altrenogest is stopped.

Further, the feeding mode of the altrenogest is 15-25 mg/time/day, and the dose of the tocoferol is 0.075-0.15 mg/head.

And further, stopping feeding the replacement gilts which are not estrus for 5-7 days after the altrenogest is injected, injecting the same estrogen on the 7 th day after the altrenogest is stopped, transferring the gilts with the standing reflex into a production group, and mixing the gilts with weaned sows for feeding and mating.

Further, the injection dosage of each sow of the synhair is PMSG 400IU + hCG 200IU + phosphate buffer solution for injection 5 ml.

Further, the traditional Chinese medicine composition comprises the following components in parts by mass: 60-80 parts of bupleurum, 100-120 parts of dodder, 180-200 parts of medlar, 100-120 parts of crude cattail, 60-80 parts of costus root, 120-150 parts of cornu cervi degelatinatum, 100-120 parts of glossy privet fruit, 100-120 parts of desertliving cistanche, 100-120 parts of angelica and 100-120 parts of chuanxiong rhizome.

Further, the addition amount of the traditional Chinese medicine composition is 3g/Kg calculated on the basis of daily basic feed.

Further, the follicle development promoting composition comprises the following components in mass calculated on the basis of daily basal diet: 0.3mg/kg of sodium selenite, 80mg/kg of zinc, 6mg/kg of folic acid, 80mg/kg of vitamin E, 1225 mu g/kg of vitamin B, 50mg/kg of lycopene, 100mg/kg of grape seed anthocyanin and 10mg/kg of astaxanthin.

Further, the mating principle is as follows: mating in the afternoon of the morning estrus, mating in the morning of the afternoon of the estrus, wherein the total number of sperms in each insemination is not less than 30 hundred million, the vitality is more than 0.65, the sperms of each sow in one estrus are infused 2 times, and the interval time is 10-12 h.

The invention discloses the following technical effects:

the processing method for improving the group entry efficiency of the replacement gilts which do not estrus in the excess period organically combines various regulation and control modes, can improve the group entry efficiency, can obviously improve the hybridization rate and the conception rate, saves the breeding cost and improves the breeding benefit.

The feed is added with the traditional Chinese medicines for promoting blood and qi to promote the development of pig follicles, the maturation and ovulation of ova, further the fertilization of ova and the implantation of embryos, and meanwhile, a follicle development promoting formula is supplemented to promote the hormone secretion of hypothalamus-pituitary-gonad axis, reduce active oxygen free radicals in follicles, improve the development quality and quantity of the follicles, and further improve the ovulation quantity and conception efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a flow chart of a processing method for improving the group entry efficiency of replacement gilts which are out of date and not in estrus.

Detailed Description

Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Further, for numerical ranges in this disclosure, it is understood that each intervening value, between the upper and lower limit of that range, is also specifically disclosed. Every smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in a stated range is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference herein for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.

It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The description and examples are intended to be illustrative only.

As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.

Example 1

A processing method for improving the group entry efficiency of replacement gilts which are out of heat in excess comprises the following steps:

(1) selecting replacement gilts which are not estrous for more than 270 days, and adding a blood-replenishing and qi-tonifying traditional Chinese medicine formula into daily ration every day from the treatment day to the herd: 60g of radix bupleuri, 120g of semen cuscutae, 200g of fructus lycii, 100g of raw cattail fruit, 60g of elecampane, 150g of cornu cervi degelatinatum, 100g of glossy privet fruit, 100g of cistanche, 100g of angelica sinensis and 100g of ligusticum wallichii, and the raw materials are dried and crushed according to the proportion of 3g/kg and 1 time per day. Meanwhile, a follicle development promoting formula is added into the daily ration: 0.3mg/kg of sodium selenite, 80mg/kg of zinc, 6mg/kg of folic acid, 80mg/kg of vitamin E, 1225 mu g/kg of vitamin B, 50mg/kg of lycopene, 100mg/kg of grape seed anthocyanin and 10mg/kg of astaxanthin so as to promote follicular development and improve the quality of ova.

(2) Intramuscular injection of one part of each of the delivered placenta and the isogenic substance is performed on the same day to promote luteolysis, follicular development and ovulation, in 7 days after injection, boar odorant is used for inducing estrus checking, 2 times a day (9: 00 am and 3:00 pm), during the estrus checking, if a sow with a standing reflex is found to be marked, the sow is transferred into a production group to be mixed with a weaned sow for feeding, during the afternoon of estrus checking, during the second day of afternoon estrus checking, 80ml of sperms (the total number of sperms is not less than 30, the vitality is more than 0.65) are distributed, each sow sperms are distributed for 2 times in one estrus, and the interval time is 10-12 hours.

(3) Feeding replacement sows which are not yet estrus after the first treatment in the step (2) with 5 ml/time/day of altrenogest for inhibiting follicle development to enable the sows to be synchronized, continuously feeding for 10 days, injecting 1 part of delivered fetoprotein during the last feeding for promoting luteal dissolution, inducing and checking estrus by using a boar odorant 5-7 days after stopping feeding the altrenogest, performing induction and checking estrus 2 times per day (9: 00 a.m. and 3:00 a.m.), marking sows which have standing reflex during the estrus checking process, transferring the marked sows into a production group to be mixed with weaned sows for feeding, performing hybridization in the afternoon of the morning, performing hybridization in the morning of the afternoon, performing insemination 80ml (the total number of sperms is not less than 30 hundred million and the vitality is more than 0.65) each time in one estrus, and performing insemination on each sow 2 times in one estrus at intervals of 10-12 hours.

(4) And (3) injecting 1 part of isoestrogen to the replacement gilts which are not estrated within 7 days after the secondary treatment in the step (3) for promoting follicular development and ovulation, simultaneously using boar odorants to induce and check estrus for 2 times per day (9: 00 am and 3:00 pm), marking the sows with still reflection in the estrus checking process, transferring the sows into a production group to be mixed with weaned sows for feeding, mating in the afternoon of the estrus in the morning, mating in the morning of the afternoon of the estrus in the afternoon, wherein each time of insemination is 80ml (the total number of sperms is not less than 30 and the vitality is more than 0.65), and each sow is inseminated for 2 times within one estrus period with the interval of 10-12 billion.

The best dosage of the placenta delivery agent injected by the replacement gilt is determined to be 0.075 mg/head in the research process, and if the dosage is too low, the luteal phase is incompletely dissolved, and the synchronous estrus rate is influenced. The optimal dosage of the altrenogest is 5ml (20 mg)/head, the low dosage of the altrenogest can not completely inhibit the growth and development of follicles, a replacement sow can not maintain a corresponding physiological state, the administration amount is too large, not only can the clinical curative effect not be increased, but also the residue of the altrenogest in a sow body can be increased, and the withdrawal period can be correspondingly prolonged. The dose of the isoalpha is 1 part (PMSG 400IU + hCG 200IU + phosphate buffer solution for injection 5ml), the lower dose can not promote more follicular development and ovulation, and the higher dose can cause follicular cyst and embryonic death.

A conventional treatment method is adopted as a control group, and the specific treatment steps are as follows: the sows which do not have heat and are more than 270 days old are bred in a mixed group, the boars are insisted for induction every day, and the females which do not have heat and are more than two heat (42 days) are eliminated.

The different effects of the treatment groups on follicular development compared to the control group are shown in table 1, with the treatment groups treated by the method of the invention (optimal doses of oxytocin, altrenogest and isoferon).

TABLE 1

The effect of oestrus and conception rates in the treatment and control groups are shown in table 2.

TABLE 2

Note: the same column with different letters indicates significant differences (P < 0.05).

The effect of oestrus and conception rates in the treatment and control groups are shown in table 3.

TABLE 3

Note: the same column with different letters indicates significant differences (P < 0.05).

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.