Small tail Han sheep breeding

The meat of small-tailed Han sheep is delicate, the intermuscular fat is marbled, fat and thin is moderate, delicious and juicy, fat but not greasy, fresh but not thick. And rich in nutrition, high protein content, low cholesterol content, rich in a variety of essential amino acids, vitamins, mineral elements and so on. The video and technology of small-tailed Han sheep breeding are introduced as follows

I. castration in time

The lambs used for fattening should generally be castrated within 1-3 weeks, when castration is beneficial to improve the meat quality, make the meat tender, reduce the taste of meat, and make the sheep docile, easy to manage, and easy to fatten. There are two commonly used castration methods: one is castration forceps, with special ovariectomized forceps, in the upper part of the scrotum, the spermatic cord will be cut off, and then the testicles gradually atrophy. Because this method does not cut the wound, there is no risk of blood loss and infection. The other is ligation, in which the testes are squeezed into the scrotum when the male lamb is 1 week old. The upper part of the scrotum, that is, the spermatic cord, was tightly entangled with a rubber band or string, so that its blood circulation was blocked. After 20 to 30 days, the vaginal bundle and testis atrophied and fell off naturally.

Second, early weaning

The traditional weaning time of small tail Han sheep is from 3 months to 4 months old. According to the experiment, the average body weight and daily gain of 60-day-old and 90-day-old weaned lambs were similar to those of 6-month-old lambs under the same conditions, but the difference was not significant. This shows that early 2-month-old weaning is feasible. Weaning and fattening at the age of 2 months is beneficial for ewes to breed in advance and increase the breeding sheep from 3 births in 2 years to 2 births a year, so as to improve the reproduction rate, herding rate and meat yield of small-tailed Han sheep.

III. Regular deworming

The fattening lambs were dewormed once after weaning and at the beginning of autumn. The commonly used insect repellents are: nitrochlorophenol, thiobichlorophenol, albendazole, etc., taken orally with 4 mg, 35 mg ~ 75 mg and 2.5 mg ~ 3 mg per kilogram body weight, respectively.

Fourth, house feeding fine feeding

The traditional extensive feeding method is the fine surprise fattening mode of house feeding, and the reasonable collocation of coarse and refined feed to make the lambs out of the fence for about half a year can significantly improve the economic benefit. Specifically, the formula feed of 35% hay, 37% Wang rice straw powder, 5% bean cake, 4% cotton cake and 14% corn can be used to fatten weaned lambs at the age of 5 months to 6 months, with a live weight of more than 40 kg and an average daily gain of more than 200 grams. This method has the advantages of good meat production effect, short fattening period and fast turnover, and is suitable for intensive and factory chemical fertilizer lamb production.

Fifth, feed additives

1. Feed sheep fattening compound feed, the additive is composed of trace elements iron, copper, manganese, zinc, selenium, rumen metabolic regulators, growth promoters and substances inhibiting harmful microorganisms. It is suitable for the fattening of Capricorn lambs and elimination of old sheep. With this additive, the weight gain rate and feed conversion rate were increased by 23.1% and 18.7%, respectively.

2. Add ruminin (also known as monensin sodium). Its function is to control and improve the rumen fermentation efficiency, so as to improve the weight gain rate and feed conversion rate. The results showed that the daily gain and feed conversion rate of small tail Han sheep fed with ruminin were about 35% and 27% higher than those of the control group. Usage and dosage: 25 mg ~ 30 mg of ruminin per kg diet of small tail Han sheep. In practical application, the appropriate amount should be determined according to the composition of the diet, should be evenly mixed in the feed, the initial amount can be lower, and then gradually increase.

3. Add urea phosphate (urea can also be used instead). Its function is to supplement nitrogen and phosphorus for ruminants, and it is a new type of non-protein nitrogen feed additive. When 10 grams of urea phosphate was added to each sheep per day, the average mouth weight gain increased by 26.7%.

4. Feed bacitracin zinc bacteriostatic and growth promoting agent. Its effect on livestock is beneficial to the digestion and absorption of nutrients in the intestinal tract, improve the utilization rate of feed and increase body weight. The lamb dosage was added 10 mg ~ 20 mg / kg mixture and fed evenly in the feed.

5. Small-tailed Han sheep are slaughtered at the right time

The growth intensity of small-tailed Han sheep is high in the early stage and slows down in the later stage. If the meat lambs are raised to more than 1 year old and then slaughtered, the feeding cost is high and there is more fat deposition. Therefore, the fattening period of lambs should be from 5 months to 6 months.