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Treatment method for improving effect of synchronous oestrus and timed insemination of buffalo in summer

A treatment method and timing insemination technology, applied in medical science, veterinary equipment, animal delivery, etc., can solve problems such as decreased appetite, affecting reproductive performance, and long duration of estrus, so as to promote follicular development and ovulation, and reduce follicular insemination. Cyst rate, effect of increasing conception rate in estrus

Pending Publication Date: 2022-07-01
HUAZHONG AGRI UNIV
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  • Application Information

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Problems solved by technology

[0003] In addition, heat stress in summer will cause buffalo estrus, ovulation, low fertilization rate, inhibit follicular development, decrease feed intake, decrease milk production, and decrease appetite, resulting in an imbalance of energy supply and demand in the body, and the imbalance between energy supply and demand after delivery will cause directly affect reproductive performance
[0004] Summer buffalo milk production and mating conception rate are lower, mainly due to the low reproductive rate of lactating buffaloes under summer heat stress, which inhibits the development of follicles, does not go into estrus, and has a quiet estrus. The interval between calves is long, the postpartum uterus and ovarian function recover slowly, and the estrus lasts for a long time, so it is difficult to estimate the ovulation time. Therefore, how to increase the buffalo mating rate and conception rate, thereby increasing the reproductive rate and speeding up the breed improvement is very important. significance

Method used

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  • Treatment method for improving effect of synchronous oestrus and timed insemination of buffalo in summer
  • Treatment method for improving effect of synchronous oestrus and timed insemination of buffalo in summer
  • Treatment method for improving effect of synchronous oestrus and timed insemination of buffalo in summer

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Effect test

Embodiment 1

[0035] In order to improve the problem of poor estrus effect in summer in the existing estrus program, reduce the number of somatic cells in buffalo and improve the conception rate of breeding. Carry out the melatonin + simultaneous estrus timed insemination program, see the process figure 1 Specifically, 62 healthy perinatal hybrid buffalo in good body condition were selected. In July, the female buffalo on the 50th day after giving birth (the day of delivery is 0) was selected, according to age, weight, milk production, parity, etc. The indicators were evenly distributed in each group and divided into 3 groups. The T1 group was subcutaneously injected with melatonin 6mg / 50kg body weight every day from the first four days of estrus at the same time (46 days postpartum), for 3 consecutive days, once a day, a total of 3 injections ( That is, the treatment group T1 was subcutaneously injected with melatonin every day for the first three days of estrus during the same period); th...

Embodiment 2

[0063] A method for treating buffaloes with simultaneous estrus in summer-timed insemination effect by injecting melatonin before estrus at the same time Asymmetric horns, follicular cysts, ovarian cysts, large uterine horns, inflammation) cannot be used for the test, and can be tested according to the procedures such as Figure 5 The specific scheme is as follows:

[0064] Two days before estrus treatment at the same time: the day of delivery is recorded as day 0, and on the 48th day after delivery (the first week), melatonin is injected subcutaneously at 18mg / 50kg body weight per head at 15:00pm on Monday to promote follicle development .

[0065] Day 0 of simultaneous estrus treatment: On the 50th day postpartum (the first week), the first intramuscular injection of GnRH at 15:00pm on Wednesday at 15:00pm in one or more healthy estrus buffaloes was administered at a dose of 400 μg / head, to induce estrus.

[0066] The 6th day of estrus treatment at the same time: on the 5...

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Abstract

The invention provides a treatment method for improving the effect of synchronous estrus-timed insemination of buffalo in summer, which comprises the following steps: injecting melatonin to multiparous buffalo two days before synchronous estrus treatment, namely the 48th day after delivery, and then performing synchronous estrus-timed insemination. The invention also provides a novel application of the melatonin. According to the treatment method, the estrus synchronization rate of the summer multimilk buffalo is effectively increased, follicle development and development speed, breeding rate and conception rate are promoted, the milk yield and early embryo survival rate of the buffalo can be increased, the number of somatic cells is reduced, estrus detection and regular insemination are not needed, and operation is convenient.

Description

technical field [0001] The invention belongs to the technical field of buffalo reproduction in animal husbandry, and in particular relates to a treatment method for improving the effect of estrus-timed insemination of buffalo in summer. Background technique [0002] Buffalo is a seasonal breeding livestock, mainly distributed in tropical and subtropical regions, and its reproductive performance is easily affected by the environment and climate. Its reproductive performance is low in the non-breeding season, especially in summer, the main reason is that heat stress in summer leads to quiet estrus, irregular estrus ovulation, false estrus, estrus identification is difficult, it is difficult to grasp the ovulation time, or estrus duration comparison. It is difficult to estimate the time of ovulation, so it is difficult to grasp the timing of timely insemination, resulting in a low fertility rate of breeding, late sexual maturity, and long estrus duration , up to 4-64h (Campani...

Claims

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Application Information

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IPC IPC(8): A61D7/00A61D17/00A61D19/02A01K67/02
CPCA61D7/00A61D19/027A61D17/006A01K67/02
Inventor 杨利国阿地力·阿不来提滑国华
Owner HUAZHONG AGRI UNIV
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