Cashmere Goat Improvement is the selection of improved cashmere goats to improve hybrid goats, improve goat cashmere production and cashmere quality, and increase the economic efficiency of the sheep industry.
L. Selection of Cashmere Goats: Currently, the main cashmere goat breeds include: Liaoning Cashmere Goat, Albas White Cashmere Goat, Azuoqi Cashmere Goat, Hexi Cashmere Goat, Xirong Cashmere Goat, Xinjiang Cashmere Goat and Inner Mongolia Erlang Velvet Goats and so on.
2. To establish breeding ewes, households or households, eliminate old and weak ewes and land hybrid rams, and purify the sheep.
3, according to the proposed program for selection of seed selection. The rams used to improve local goats must be above grade one, and the cashmere production should be no less than 6009. For hybrids that improve hybrid reproduction, the ewes should be selected and the rams must be exchanged for progressive breeding and breeding. The rams must demand that the cashmere production be over 8009 or special rams, and the current generation of algebras should be three generations.
4, breeding methods: At present, most of the regions use the exchange. Male and female ewes are usually managed separately. In the season of mating, males and females are grouped at a ratio of 1:30 for natural mating. However, in order to increase the utilization rate of rams, it is currently actively promoting the mating of sheep artificial insemination techniques to speed up the progress of improvement. The technical specifications for artificial insemination of sheep are basically the same as those for cattle frozen semen, including: breeding sheep breeding, breeding of external genitalia and breeding rooms, and equipments for sperm collection and mating, disinfection, sperm collection, semen quality inspection, preservation, transportation and freezing. Fine thawing, dilution, insemination, etc.
5. Strengthen the management of breeding rams and improved hybrid sheep
This type of ram is ideal for individual rearing and management. It is necessary to strengthen nutrition and supplement protein feed during the breeding period. The crossbreeding sheep should be used as a separate group. The breeding ewes should be reserved for breeding, and the first and second generations of hybrids should be castrated. It is not appropriate to leave it as a seed, and whether the three-generation hybrid rams can be preserved or not, requires technical personnel to strictly select and retain them, so as to prepare for cross breeding.
6, with ear number. Establish a technical file for breeding sheep, and select and match the selection so as to prevent inbreeding from causing inbreeding.
7. Do a good job in sheep production and sheep breeding performance test and form registration records:
Including the number of breeding sheep, number of pregnancy, number of abortions, number of litters, number of deaths, number of survival, appearance characteristics of sheep, body size, weight, villus production, length and quality at each growth stage, meat production performance.
8. After the end of a production cycle, conduct a summary analysis to find out the experience and lessons learned, determine the merits and demerits of breeding sheep, retain and eliminate them, and formulate a new breed preparation plan.
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