阅读说明：本技术 一种让草原上散养牛产双胞胎的简易方法 (Simple method for scattered breeding of twins of cattle on grassland ) 是由 赛朝格图 王建国 那顺其木格 宝乐德 于 2021-04-26 设计创作，主要内容包括：本发明公开了一种让草原上散养牛产双胞胎的简易方法,包括选牛、饲养管理、人工诱导发情、激素诱导排卵、配种五个方面。通过选牛、饲养管理、人工诱导发情、激素诱导排卵、配种五个方面的控制可使散养牛在繁殖的过程中一次生产两只牛仔,加快了繁殖的效率。(The invention discloses a simple method for scattered breeding of twins of cattle on a grassland, which comprises five aspects of cattle selection, feeding management, artificial estrus induction, hormone induced ovulation and mating. Through five aspects of control of cow selection, feeding management, artificial estrus induction, hormone induced ovulation and hybridization, two cowboys can be produced by the free-ranging cows at one time in the breeding process, and the breeding efficiency is accelerated.)

1. A simple method for scattered breeding of twins of cattle on grassland is characterized by comprising five aspects of cattle selection, feeding management, artificial estrus induction, hormone induced ovulation and mating;

the standard of the cattle selection aspect is as follows: the body is wide, the condition is moderate, the milk production is high, the pregnancy is not performed, the ovary development is normal, and 1-5 cows for laying the fetus or the milk and meat are used;

the feeding management aspect comprises grazing and supplementary feeding on a grassland;

the artificial estrus induction method is to intravaginally release the vaginal suppository CIDR, and simultaneously remove the suppository on the 16 th day;

the method for inducing ovulation by the hormone comprises the following steps: sequentially and progressively injecting follicle stimulating hormone FSH for 3 times from 14 th to 16 th days of a vaginal suppository CIDR or sequentially and progressively injecting follicle stimulating hormone FSH for 2 times from 15 th to 16 th days according to the body condition of a cow, wherein the total injection amount is controlled to be 250-350 units, and simultaneously, injecting pregnant mare serum gonadotropin PMSG once from 15 th day;

the method of the mating aspect comprises the following steps: the oestrus of the cattle is observed after removal of the embolus, and after oestrus luteinizing hormone releasing hormone A3 is injected and the ovaries are examined rectally and suitably bred.

2. The simplified method for free-ranging cattle twins on grasslands as claimed in claim 1, wherein the supplementary feeding materials include carrot, silage and alfalfa.

3. The method of claim 1, wherein the CIDR of the vaginal suppository is removed at day 16 of artificial estrus induction.

4. A simplified method of disseminating twins in cattle on grasslands as claimed in claim 1 wherein the injection of FSH acts to control the amount of ovulation.

5. The simplified method for free-ranging cattle twins on grasslands as claimed in claim 1, wherein the injection of PMSG serves to promote follicular development, maturation, estrus induction and ovulation.

6. The simplified method for raising cattle twins in free range on grassland as claimed in claim 1, wherein the injection of luteinizing hormone releasing hormone A3 is effective in promoting ovulation.

Technical Field

The invention relates to the field of livestock breeding, in particular to a simple method for free-ranging cattle twins on grasslands.

Background

Animal husbandry is a production department for obtaining animal products such as meat, eggs, milk, wool, cashmere, skin, silk and medicinal materials by utilizing the physiological functions of animals such as livestock and poultry which are domesticated by human beings or wild animals such as deer, musk, fox, mink, otter and quail and converting pasture, feed and other plant energy into animal energy through artificial feeding and breeding.

However, in the existing animal husbandry, natural breeding is mostly carried out by livestock, and most of cattle produced by the breeding mode are one birth, so that the breeding efficiency is low. Therefore, the present invention provides a simple method for free-ranging cattle twins on a grassland to solve the problems in the background art.

Disclosure of Invention

The invention aims to provide a simple method for free-ranging cattle twins on a grassland to solve the problems in the background technology.

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

a simple method for raising cattle in grassland to produce twins comprises selecting cattle, raising and managing, artificially inducing estrus, stimulating to induce ovulation, and mating;

the standard of the cattle selection aspect is as follows: the body is wide, the condition is moderate, the milk production is high, the pregnancy is not performed, the ovary development is normal, and 1-5 cows for laying the fetus or the milk and meat are used;

the feeding management aspect comprises grazing and supplementary feeding on a grassland;

the artificial estrus induction method is to intravaginally release the vaginal suppository CIDR, and simultaneously remove the suppository on the 16 th day;

the method for inducing ovulation by the hormone comprises the following steps: sequentially injecting follicle stimulating hormone FSH three times in a decreasing way from 14 th to 16 th days of a vaginal suppository CIDR according to the body condition of a cow or sequentially injecting follicle stimulating hormone FSH 2 times in a decreasing way from 15 th to 16 th days, controlling the total injection amount to be 250-350 units, and simultaneously injecting pregnant mare serum gonadotropin PMSG once on the 15 th day;

the method of the mating aspect comprises the following steps: the oestrus of the cattle is observed after removal of the embolus, and after oestrus luteinizing hormone releasing hormone A3 is injected and the ovaries are examined rectally and suitably bred.

As a further scheme of the invention: the supplementary feed materials include carrot, silage and alfalfa.

As a still further scheme of the invention: the pessary CIDR was removed on day 16 of artificial induction estrus.

As a still further scheme of the invention: the effect of FSH injection is to control the amount of ovulation. When the dose of FSH is too small, the requirement of discharging double ova cannot be met, and when the dose is too large, the ovarian stimulation is too much, so that multiple fetuses are possibly caused, and the consequences that fertilized ova are not implanted or cows are aborted and the like are possibly caused.

As a still further scheme of the invention: the injection of pregnant mare serum gonadotropin PMSG has the functions of promoting follicular development and maturation, and causing estrus and ovulation.

As a still further scheme of the invention: the injection of luteinizing hormone releasing hormone a3 acts to facilitate ovulation.

Compared with the prior art, the invention has the beneficial effects that:

by the method, two cowboys can be produced by the free-ranging cattle at one time in the breeding process through five aspects of cattle selection, feeding management, artificial estrus induction, hormone induced ovulation and hybridization, and the breeding efficiency is accelerated.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.

In the embodiment of the invention, the simple method for scattered breeding of twins in cattle on the grassland comprises five aspects of cattle selection, feeding management, artificial estrus induction, hormone-induced ovulation, mating and the like.

Selecting cattle (wide body, moderate fat, high milk yield, no pregnancy, normal ovary development, 1-5 born cow for meat or breast cow for meat);

feeding management: grazing and supplementary feeding on grasslands (carrot, silage and alfalfa);

artificial induction estrus (intravaginal pessary CIDR) day 16 emboli were removed;

hormone-induced ovulation (according to the body condition of a cow, 3 follicle stimulating hormone FSH injections are sequentially and degressively injected from 14 th to 16 th days of a vaginal suppository CIDR or 2 follicle stimulating hormone FSH injections are sequentially and degressively injected from 15 th to 16 th days, the total amount is controlled to be 250-350 units (the ovulation number is controlled, the too small dose does not meet the requirement of double egg discharge, the too large dose causes too much ovulation, multiple fetuses are possibly caused, and the consequence can cause that fertilized eggs do not nide or cow abortion), and the mare serum gonadotropin PMSG (follicle development promoting, maturation, estrus inducing and ovulation) is injected once on the 15 th day;

seed preparation: taking out and observing estrus, injecting luteinizing hormone releasing hormone A3 (promoting ovulation), checking ovary by rectum, and mating at proper time.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent substitutions or changes according to the technical solution and the inventive concept of the present invention should be covered by the scope of the present invention.