How to improve the gross wool yield and quality of long-haired rabbits and produce high-grade rabbit hair that is "long loose white" is a problem that every rabbit producer must pay attention to. The author gives an introduction based on the advanced experience of some large-scale, long-haired, field-free games:
(I) Promotion of seed breeding, fine seed selection, and implementation of crossbreeding In the long-haired rabbits reared in China, the German-based Angolan yielded the highest hair production, the French Angora rabbits were middle, and the British and Chinese Angola were lower. In recent years, the amount of wool produced by the Tang line and the long hair rabbits of the Yan family grown in China has been high. While promoting good varieties, we must continue to breed these fine varieties in order to avoid degradation of future generations.
(2) Guaranteeing nutrient supply and providing full-priced diet Because sulfur is one of the constituent elements of rabbit hair, it has an important influence on the yield, elasticity, and strength of rabbit hair. Therefore, attention should be paid to the addition of sulfur amino acid, cystine, in conjunction with diets. The keratin of rabbit hair is composed of various amino acids, so a large amount of protein must be supplied. In the ideal hair rabbit diet, protein should account for about 17%, and sulfur-containing amino acids should not be less than 0.6%.
(3) Doing a good job of rabbit cage equipment, carefully managing the management of the longhair rabbits, and stressing that the cage facilities should be supported. After the weaning, a rabbit is required to be caged, and the cages must be cleaned and diligently disinfected. Feeding should be regular and pay attention to the amount of drinking water. Second, we must guard against fights and injuries.
(4) Promote the development of hair and hair follicles in hairy rabbits. Increased hair density The primary hair follicles of rabbits begin to develop in the late fetal period (20-26 days). Secondary hair follicles begin to develop after the birth of the fetus. Therefore, nutrients should be strengthened during the late pregnancy and lactation of the female rabbit.
(5) The ratio of wool production to specialized female rabbits is 5% to 20% higher than that of males. The higher the group's hair production, the greater the difference. Reproduction of female rabbits from the pre-pairing shearing, short-separation shearing, prenatal self-drawing, etc., can make about 30% of the hair loss of textile value. Castration can increase the gross production of male rabbits, but should not be cast off prematurely. For this purpose, breeding and wool production can be specialized.
(six) approach. Reasonable hair removal should be based on the seasons and the physiological stages of the rabbit and other factors such as reasonable arrangement of shearing and plucking. In winter, plucking is the main type. In summer, shearing is the main method. Plucking is applied to breeds with large coat density and individuals. Pregnant rabbits, nursing mother rabbits, breeding male rabbits and young rabbits should not be unplugged.
(vii) timely collection of hair by seasonal climate changes before hair removal. The young rabbits began to change their hair 42 days after their birth and lasted for 70 days. Therefore, hair was collected within 50 days after birth. Adult rabbits will have their hair replaced. In spring, April-April will usually replace winter hairs with long summer hairs. In the autumn, generally from August to September, they will take off summer hairs and replace them with winter hairs. For this reason, the time of hair collection should be arranged before the hair replacement. In addition, it is also an important measure to establish a reasonable age structure of the rabbit population, artificial hair-feeding, maintaining a suitable ambient temperature, eradicating the bursitis of hairy rabbits, and eradicating alopecia.
(I) Promotion of seed breeding, fine seed selection, and implementation of crossbreeding In the long-haired rabbits reared in China, the German-based Angolan yielded the highest hair production, the French Angora rabbits were middle, and the British and Chinese Angola were lower. In recent years, the amount of wool produced by the Tang line and the long hair rabbits of the Yan family grown in China has been high. While promoting good varieties, we must continue to breed these fine varieties in order to avoid degradation of future generations.
(2) Guaranteeing nutrient supply and providing full-priced diet Because sulfur is one of the constituent elements of rabbit hair, it has an important influence on the yield, elasticity, and strength of rabbit hair. Therefore, attention should be paid to the addition of sulfur amino acid, cystine, in conjunction with diets. The keratin of rabbit hair is composed of various amino acids, so a large amount of protein must be supplied. In the ideal hair rabbit diet, protein should account for about 17%, and sulfur-containing amino acids should not be less than 0.6%.
(3) Doing a good job of rabbit cage equipment, carefully managing the management of the longhair rabbits, and stressing that the cage facilities should be supported. After the weaning, a rabbit is required to be caged, and the cages must be cleaned and diligently disinfected. Feeding should be regular and pay attention to the amount of drinking water. Second, we must guard against fights and injuries.
(4) Promote the development of hair and hair follicles in hairy rabbits. Increased hair density The primary hair follicles of rabbits begin to develop in the late fetal period (20-26 days). Secondary hair follicles begin to develop after the birth of the fetus. Therefore, nutrients should be strengthened during the late pregnancy and lactation of the female rabbit.
(5) The ratio of wool production to specialized female rabbits is 5% to 20% higher than that of males. The higher the group's hair production, the greater the difference. Reproduction of female rabbits from the pre-pairing shearing, short-separation shearing, prenatal self-drawing, etc., can make about 30% of the hair loss of textile value. Castration can increase the gross production of male rabbits, but should not be cast off prematurely. For this purpose, breeding and wool production can be specialized.
(six) approach. Reasonable hair removal should be based on the seasons and the physiological stages of the rabbit and other factors such as reasonable arrangement of shearing and plucking. In winter, plucking is the main type. In summer, shearing is the main method. Plucking is applied to breeds with large coat density and individuals. Pregnant rabbits, nursing mother rabbits, breeding male rabbits and young rabbits should not be unplugged.
(vii) timely collection of hair by seasonal climate changes before hair removal. The young rabbits began to change their hair 42 days after their birth and lasted for 70 days. Therefore, hair was collected within 50 days after birth. Adult rabbits will have their hair replaced. In spring, April-April will usually replace winter hairs with long summer hairs. In the autumn, generally from August to September, they will take off summer hairs and replace them with winter hairs. For this reason, the time of hair collection should be arranged before the hair replacement. In addition, it is also an important measure to establish a reasonable age structure of the rabbit population, artificial hair-feeding, maintaining a suitable ambient temperature, eradicating the bursitis of hairy rabbits, and eradicating alopecia.
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