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Tail sheep with estrus synchronization technology to increase reproductive rate


Reasonable time to determine the breeding to improve the reproduction rate, more accurately be 1 year and 2 child or 2 years and 3 tires. A scientifically arranged tail sheep breeding on average 148.33 days pregnant, postpartum 40 days the majority of breeding ewes to heat, so that production can be 1 or 2 years 2 years 3 production. Han sheep in spring and autumn heat more concentrated, so 1 year and 2 child 3 to 4 months in the breeding, 8 September lambing; 9 to October breeding the following year, can produce 2 to 3 months 2 tires. Lamb 2 to 3 per month after weaning, is in the grass season, is to cultivate a good season back sheep; 8 to 9 per month after the lamb fattening after weaning, it was the winter supply of lamb to the market appreciation. 2 years and 3 fetal sheep in August-September breeding the following year, January-February lambing; March-April breeding, 8 September lambing; 10 November breeding the following year from March to April lambing. In order to complete 1 year 2 years 3 or 2 tires tires, often used in the farms of estrus synchronization technology. 2 estrus synchronization of estrus synchronization is carried out on the estrous cycle of ewes processing methods. Simply put, is the use of certain hormone preparations manipulate and adjust the process of a group of ewes during estrous cycle, so that in the concentration of heat within the time scheduled for a planned breeding rational organization. 2.1 The drug is currently used for sheep, estrus synchronization drugs generally fall into two categories. One is the inhibition of estrus in preparation, is a progesterone-like substances, such as progesterone, medroxyprogesterone acetate, megestrol acetate, norethindrone, chlormadinone, fluorine progesterone, 18-methyl norethindrone, etc., and its the blood to maintain a certain level, could inhibit the growth of follicles. The other is in the application on the basis of these drugs with the use of gonadotropin,[link widoczny dla zalogowanych], such as follicle stimulating hormone (FSH), luteinizing hormone (UH), pregnant mare serum gonadotropin (PMSG) and human chorionic gonadotropin (HCG), and with the promotion of the role of endogenous gonadotropin-releasing gonadotropin-releasing hormone (GnRH). Use of these hormones is to promote follicle growth, maturation and ovulation, the ovulation period of estrus to reach a higher level,[link widoczny dla zalogowanych], get a better conception rate. 2.2 The most common treatment is embolization. Take a piece of foam, the diameter and thickness of the individual according to the size of the sheep, usually 2 - 3cm, too easy to fall off too easily lead to efforts to select ewes will also be out. Fasten the thread on the foam, the other end lead to the anus, the easy out of the end of processing. The foam impregnated with progestogen preparation solution (mixed with vegetable oil), stuffed with long-handled tongs to the cervix outside the mouth. Place 14 to 16 days out, the day im pregnant mare serum gonadotropin (PMSG) 4o0 ~ 700IU; 2 ~ 3 days to be processed most of the performance of ewes in heat, heat the insemination day and next day 1. Reference to the amount of drug types and is generally: a progesterone 40-60rag, megestrol acetate 40 ~ 50rng,[link widoczny dla zalogowanych], 18-methyl norethindrone 30 ~ 40rag, chlormadinone 20 ~ 30rr chlorine progesterone 30 ~ 60mg, progesterone 150 -300mg. 2.3 Precautions should be noted that foam and utensils, otherwise it will cause inflammation; bolt to the right size, place the appropriate. 2.5.1 2.5 to do the work of disease control prevention and control open after eating rabbit coccidia, coccidiosis due to ingestion of contaminated feed, and females infected with coccidia stool. Therefore, to promptly clean up feces, regular disinfection Tushe and appliances; the same time to add the feed anticoccidial drugs, such as Robenidine and so on. 2.5.2 Control yellow urine disease 1 week after birth of pups, if females suffer from mastitis, or the surrounding environment pollution, the pups will happen soon yellow urine disease and death. There is no effective therapy, therefore, usually females should pay special attention to health and the environment,[link widoczny dla zalogowanych], at least a week and 1 female rabbit rabbit cage cleaning spray disinfection. Once the 6 found females with mastitis. Should stop breast-feeding. 2.6 The importance of pups born 10 days after the eradication of rats. The most vulnerable to rodents, can cause serious considerable losses. Therefore, in addition to doing their daily work, the eradication of rats should be taken seriously enough. 2.7 strengthen the breeding of large rabbit warren or specialized households, on his own rabbit breeding group must be continually improved. To those who choose to stay a good plush, high fecundity, feeding ability, disease resistance and the use of reserved species; where fertility is poor,[link widoczny dla zalogowanych], poor feeding, poor disease resistance of females, should be eliminated, and strictly avoid inbreeding.
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