Method for purifying and rejuvenating Yimeng black goats
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A technology for purifying and rejuvenating black goats, which is applied in animal husbandry and other fields, can solve the problems of small number of black goats, slow growth speed, low production performance, etc., and achieve the effect of avoiding inbreeding, improving success rate and ensuring good quality
Inactive Publication Date: 2019-09-10
LINYI ACADEMY OF AGRI SCI
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[0003] The number of existing black goats is small, because of their slow growth rate and low lambing rate, one litter a year, up to two litters, and basically only one litter per litter, which is the most significant shortcoming of Yimeng Mountain black goa
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Examples
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Embodiment 1
[0023] Embodiment 1: a kind of Yimeng black goat purification and rejuvenation method mainly comprises the following steps:
[0024] Step 1: Selection and Breeding
[0025] In Yimeng area, 400 male black goats and female black goats with a ratio of 1:9 were selected, including 40 male black goats and 360 female black goats. Adult male black goats with big eyes, thick and short necks, strong physique, straight back and waist, straight and strong limbs, strong adaptability, strong disease resistance, and normal estrus. The breeding standards for female black goats are: neck Adult black goats that are slender, narrow in forequarters, well-developed in hindquarters, straight in limbs, strong in hooves, well developed in udders, without reproductive disorders or reproductive tract diseases, in normal estrus, and with a short refat period;
[0026] Step 2: Establish an excellent population of black goats for breeding
[0027] Combined with the pedigree information of the selected ...
Embodiment 2
[0032] Embodiment 2: The difference from Example 1 is that in step one, the selected male and female black goats will be separated and raised for 6 months, and the weak and sickly, low-vigorous individuals will be eliminated during the breeding period, and the same number of individuals will be supplemented from its source. Proceed to the population component breeding in step 2.
Embodiment 3
[0033] Embodiment 3: The difference from Example 1 is that before carrying out group assignment in step 2, determine the estrous cycle of male and female black goats by test estrus, observing external changes, and B-ultrasound examination, and the male and female black goats with the same estrous cycle , female black goats for distribution.
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Abstract
The invention discloses a method for purifying and rejuvenating Yimeng black goats. The method includes the following steps: step I, selecting male black goats and female black goats with a ratio of 1: 9, separating and culturing for 6 months, eliminating weak bodies and supplementing the weak bodies; step II, combining the estrus cycle and pedigree information of male and female black goats, evenly distributing the female goats to the male black goats in estrus synchronization to obtain a basic population, and breeding the basic population in a local cross mode; step III, after natural breeding, strictly screening the black goats bred by each generation, and eliminating individuals that do not meet the standards, ensuring that the offspring bred are equal to or better than the previous generation in the whole breeding process, and finally acquiring excellent varieties; and step IV, promoting and popularizing the improved varieties of black goats through artificial insemination, embryotransfer and genetic engineering to speed up the expansion of improved variety population and the speed of population gene improvement.
Description
technical field [0001] The invention belongs to the technical field of animal reproduction and breeding, and in particular relates to a method for purifying and rejuvenating Yimeng black goats. Background technique [0002] Yimeng black goat is an excellent local breed in Shandong Province. It is a multi-purpose breed of meat, cashmere, wool and leather formed under the natural conditions of mountainous areas. It belongs to the dual-purpose sheep of cashmere, wool and meat. The meat of Yimeng black goat is rich in nutrition, containing 13.3% protein, 4.6% fat and 367 calories. Mutton is soft and easy to digest. Generally, healthy people can digest more than 90% of crude protein and more than 98% of fat in mutton. Yimeng black goat meat is tender, evenly red in color, with little mutton smell, and it tastes fragrant but not greasy when eaten. It contains 2 times more fat than beef, more than 1 times more calories than beef, 50% more calcium than beef, similar to pork, more ...
Claims
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Application Information
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