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A method for inducing simultaneous estrus in gilts

A technology for gilts and sows, applied in pharmaceutical formulas, medical preparations containing active ingredients, peptide/protein components, etc., can solve problems such as difficulty in synchronizing estrus in gilts, and is conducive to organizing large-scale production, Facilitate large-scale organization of production and improve the effect of allocation rate

Active Publication Date: 2021-08-17
NORTHEAST AGRICULTURAL UNIVERSITY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem that it is difficult to synchronize the estrus of gilts, the present invention provides a method for inducing estrus of gilts at the same time. The timing of estrus is synchronized, which is conducive to large-scale pig breeding

Method used

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  • A method for inducing simultaneous estrus in gilts
  • A method for inducing simultaneous estrus in gilts
  • A method for inducing simultaneous estrus in gilts

Examples

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Embodiment 1

[0028] Embodiment 1. The method of inducing gilt synchronous estrus.

[0029] Select 18 gilts who are healthy and disease-free, especially not carrying reproductive-related diseases, aged 220 days, weighing 130 kg, and medium in body condition.

[0030] After the pigs are selected, feed 16 mg of allylgestrol at a specified time, such as 14:00 every afternoon, for 18 days, up to 20 days; after the last feeding, the interval is 48 hours, and at 14:00 on the 20th day. :00 injection of 400IU eCG; interval 80 hours; injection of 200IU hCG at 22:00 on the 23rd day; pigs began to estrus at 22:00 on the 24th day.

[0031] Simultaneous estrus detection: the pigs induced by this embodiment were subjected to surgical laparotomy and found that the ovaries had been ovulated and red bodies appeared, such as figure 1 As shown, the reproductive system of the pigs was well developed without any lesions. The ovaries on both sides are well developed and have ovulated, red bodies appear, and th...

Embodiment 2

[0033] Embodiment 2. The method of inducing gilts to estrus synchronously.

[0034] Select 18 healthy and disease-free gilts, especially not carrying reproductive-related diseases, aged 225 days, weighing 135 kg, and medium in body condition.

[0035] After the pigs are selected, feed 18mg of allylgestrol at a specified time, for example, at 14:00 p.m. every day for 19 days; after the last feeding, at an interval of 45 hours, inject 400 IU at 11:00 on the 21st day eCG; interval 80 hours; inject 200IU hCG at 19:00 on the 24th day; pigs start to estrus at 19:00 on the 24th day.

[0036] Simultaneous estrus detection: the pigs after the induction of this embodiment were subjected to surgical laparotomy and found that the ovaries had been ovulated and red bodies appeared, such as figure 2 As shown, the reproductive system of the pigs was well developed without any lesions. The ovaries on both sides are well developed and ovulated, red bodies appear, and the left side of the pig...

Embodiment 3

[0038] Example 3. A method for inducing simultaneous estrus in gilts.

[0039] Select 18 healthy and disease-free gilts, especially not carrying reproductive-related diseases, aged 220 days, weighing 140kg, and having medium body condition.

[0040] After the pigs are selected, feed 20mg of allylgestrol at a specified time, for example, at 14:00 every afternoon for 20 days; after the last feeding, at an interval of 42 hours, inject 400IU at 6:00 on the 22nd day eCG; interval 80 hours; inject 200IU hCG at 14:00 on the 25th day; pigs start to estrus at 14:00 on the 26th day.

[0041] Simultaneous estrus detection: the pigs after the induction of this embodiment were subjected to surgical laparotomy and found that the ovaries had been ovulated and red bodies appeared, such as image 3 As shown, only 320 pigs had a well-developed reproductive system without any pathological changes. The ovaries on both sides are well developed and ovulated, red bodies appear, and the left side of ...

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Abstract

A method for inducing synchronous estrus in gilts belongs to the field of animal induction and artificial insemination. The invention aims at the problem that it is difficult to synchronize estrus in gilts, and provides a method for inducing synchronous estrus in gilts. Feeding allylregest at a specified time, combined with intravenous injection of eCG and hCG at a fixed time, allows gilts to be in estrus at the same time within a predetermined time. The invention is beneficial to large-scale sow production.

Description

technical field [0001] The invention relates to the field of animal estrus induction and artificial insemination, more specifically belongs to the technical field of animal husbandry, and relates to a treatment method for inducing sow estrus synchronization. Background technique [0002] Estrus synchronization technology is one of the important reproduction control technologies in modern animal husbandry production. It uses certain hormone preparations to artificially control and adjust the estrus cycle of a group of female animals, so that they can concentrate on estrus, centralized breeding, concentrated pregnancy, and concentrated delivery. Organization of production and management. In addition, the estrus synchronization technology is also conducive to the further promotion of artificial insemination technology, and it is also an important part of the embryo transfer work. Estrus synchronization technology has been widely used in livestock and poultry breeding, and has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K38/24A61K31/566A61P15/08
CPCA61K31/566A61K38/24A61P15/08
Inventor 刘忠华翁晓刚张宇霆刘龑
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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