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Treatment method for improving reproduction rate and milk yield of dairy cows in summer by adopting capsaicin

A treatment method, the technology of capsaicin, is applied in the field of capsaicin to improve the reproductive rate and milk production of dairy cows in summer, and can solve the problems of affecting digestion, reproduction and lactation, increased embryo mortality, and unsatisfactory estrus effect, and achieves The effect of saving breeding costs, improving breeding benefits, and increasing the rate of estrus in the same period

Active Publication Date: 2021-09-03
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Ovsynch-TAI estrus synchronization program has been widely used in livestock breeding, but the effect of estrus synchronization in summer is not ideal. It is manifested in a significant decrease in the conception rate during the summer estrus period and an increase in early embryo mortality, mainly due to heat stress. Blood circulates on the body surface, resulting in insufficient blood supply to the digestive, reproductive, and lactation systems, which in turn affects digestion, reproduction, and lactation, and greatly reduces milk production. How to effectively improve the reproductive rate of dairy cows in summer and milk production and quality is an urgent need to solve technical issues

Method used

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  • Treatment method for improving reproduction rate and milk yield of dairy cows in summer by adopting capsaicin
  • Treatment method for improving reproduction rate and milk yield of dairy cows in summer by adopting capsaicin
  • Treatment method for improving reproduction rate and milk yield of dairy cows in summer by adopting capsaicin

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Effect test

Embodiment 1

[0034] In this experiment, by adding 1-4 mg capsaicin per kilogram of TMR to postpartum dairy cows, the effects of capsaicin on follicle development, estrus rate and conception rate, lactation and blood biochemical indexes of dairy cows were studied, so as to improve the pregnancy rate of dairy cows in summer breeding, and at the same time improve dairy cows. milk production. Select 101 healthy pre-perinatal dairy cows in good body condition, select cows on the 20th day after giving birth (the day of delivery is recorded as 0 days), and divide them into 4 groups (pay attention to indicators such as weight, age, parity, milk production, etc. in each group). balanced distribution), and were fed diets supplemented with 0, 2, 4, and 6 mg of capsaicin per kg of TMR for one month (30 days). Experiment group I started from 20 days postpartum, adding 2 mg capsaicin per kilogram of TMR, and fed continuously for 30 days from postpartum 20 days to postpartum 50 days; group II started fro...

Embodiment 2

[0066] A treatment method for adding capsaicin in the diet to improve the reproductive rate, milk production and quality of dairy cows in summer. Select healthy dairy cows without reproductive tract diseases, according to the process as follows figure 1 As described, the specific scheme is as follows:

[0067] Select cows on the 20th day of postpartum (the day of delivery is 0 day), add 1-4 mg capsaicin per kilogram of TMR to the ration, and feed them for one month (30 days).

[0068] Day 0: On the 50th postpartum day (the first week), one or more healthy dairy cows in the estrous cycle were given the first intramuscular injection of GnRH at 15:00 on Monday afternoon, at a dose of 200 μg / cow to induce estrus .

[0069] Day 6: On the 56th day after delivery, B-ultrasound examination was carried out from the 6th day of synchronous estrus (the day before PGF2ɑ injection) to the 12th day of ovulation (that is, 72 hours after GnRH injection), and the follicle development, estrus a...

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Abstract

The invention provides a treatment method for improving the reproduction rate and milk yield of dairy cows in summer by adopting capsaicin, which comprises the following steps: S1, selecting dairy cows on the 20th day after delivery, adding the capsaicin into daily ration, and continuously feeding the dairy cows for one month; S2, recording the 50th day after delivery of the dairy cows as the 0th day of synchronous estrus treatment of the dairy cows, and performing intramuscular injection of gonadotropin release hormone to the healthy dairy cows in the estrus period; S3, carrying out intramuscular injection on PGF2[alpha] on the 7th day; S4, on the 9th day, injecting gonadotropin for the second time to release hormone, and injecting mifepristone to promote ovulation; S5, on the 10th day, carrying out artificial insemination; and S6, performing intramuscular injection of human chorionic gonadotropin on the 15th day, namely the 5th day after artificial insemination. The treatment method can effectively improve the synchronous estrus rate, the breeding rate and the conception rate of postpartum cows, improve the milk yield of the cows, and improve the milk components; and estrus detection and timing semen deposition are not needed, and operation is convenient.

Description

technical field [0001] The invention belongs to the technical field of reproduction of dairy cows in animal husbandry, and particularly relates to a treatment method for using capsaicin to improve the reproduction rate and milk yield of dairy cows in summer. Background technique [0002] Although dairy cows are domestic animals in heat all year round, their reproductive performance is easily affected by factors such as environment and climate. Summer heat stress can lead to decreased feed intake, decreased appetite, and imbalance of energy supply and demand, affecting reproductive performance. If dairy cows, especially high-yielding dairy cows, encounter heat stress during the postpartum lactation peak period, it is easy to lead to an increase in the incidence of reproductive disorders, such as abnormal estrus, quiet estrus, delayed ovulation, and reproductive tract inflammation, and will lead to an increase in early embryo mortality. , the proportion of repeatedly mated in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/02A23K50/10A23K20/111A61K31/165A61K38/09A61K38/24A61P15/08A61P15/14
CPCA01K67/02A23K50/10A23K20/111A61K31/165A61K38/24A61K38/09A61P15/08A61P15/14
Inventor 杨利国滑国华安志高阿地力·阿不来提
Owner HUAZHONG AGRI UNIV
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