How to increase the reproductive rate of mutton
Strengthen selection and matching
Ram choice: Choose breeding rams from the ewes with high reproductive rates. Body shape is required to be standard, robust, testicles are well developed, male characteristics are obvious, and rams that do not meet the requirements are found and removed through semen quality checks, descendant identification, and other measures.
Ewe selection: Select excellent individuals from multiple litter ewes and pay attention to their lactation and lactation performance, and select multiple ewes based on the pedigree.
Use of multiple fetal genes
The introduction of multiple-species breeds and the cross-breeding with local breeds are the fastest, most effective and easiest way to increase the reproductive rate of mutton sheep.
Reproductive technology control
Estrus control: First, weaning the lamb early, is conducive to the implementation of two-year-old technology. Second, hormone treatment. The lambs were first weaned and then treated with progesterone for about 10 days. After cessation of treatment, gonadotropin (RMSG) was injected to induce estrus and ovulation. Third, the use of prostate hormone law. A few days after the end of the estrus of the ewes, the uterus is injected with or intramuscularly injected with prostaglandin, and the ewe will be estrus 2 to 3 days after treatment.
Induced twin births, multiple births: First, supplemental aphrodisiac method. Supplementing one month before mating, enhance physical fitness and promote estrus. Second, use double lamb or double placenta. Aqueous preparations were injected subcutaneously in the neck 5 and 2 weeks before ewes were mated, 1 ml each; oil preparations were injected intramuscularly once every 2 weeks before ewes were mated, each with 2 ml.
Artificial insemination: The use of advanced insemination techniques to increase the conception rate.
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