Why are sheep breeds different in different regions?

(agricultural Wealth Network) Why are sheep breeds different in different regions? Small-tailed Han sheep, which are suitable for raising in plain and shallow mountain and hilly areas, have early maturity, rapid development, high lambing rate and good fur quality. The one-year-old ram weighs 90 kg and the ewe weighs 60 kg, with a reproduction rate of 265%. Charlotte Meat Sheep, a breed suitable for raising in areas with large rainfall and plains, is a world-famous meat breed imported from France, characterized by rapid growth, large weight, well-developed hindquarters and full flesh. Henan Dairy Goat, a breed suitable for raising in mountainous areas, is an excellent breed. Ewes can produce 1200 kg of milk in 300d, with good meat quality, rough feeding resistance and strong stress resistance. Huai goat, which is suitable for raising in plain area, is both skin and meat breed, with high reproduction rate, good leather, early maturity and strong stress resistance. Yuxi White Goat, a breed suitable for raising in mountainous areas, is also a sheep for both skin and meat. -- the key technology of raising sheep pays attention to breeding and matching, and gives full play to the advantage of hybridization according to different production purposes, not only ewes but also rams should be selected. "A good ewe, a good litter, a good ram, a good slope". Only with two or more excellent rams and ewes can we obtain ideal offspring. Using Charolais mutton sheep (male) with small tail Han sheep, small tail Han sheep (male) with Henan fine hybrid sheep, Henan dairy goat (male) with Huai goat and other binary hybrid sheep can bring high yield and high benefit to breeders. -- making full use of local forage and forage resources the vast rural areas are rich in coarse fodder resources such as wheat straw, bean straw, potato seedlings and corn stalks, which are used for burning and retting manure in many places, which is a great waste. All localities should actively promote the advanced technologies such as ammoniation of wheat straw, alkalization and silage of corn stalk, so as to increase the value of conversion by feeding sheep. -- adopting advanced feeding and management techniques, in addition to routine scientific feeding, we should also master the following points: 1. The sheep house should be leeward and sunny, well ventilated, and increase warm measures in winter to prevent sheep from losing weight. two。 Build soil troughs and grass racks in the sheep barn, and do not throw grass on the ground, so as not to waste or spread disease. 3. During pregnancy, especially in the later period of pregnancy, sheep should be strictly grouped according to their sex, strength and size, so as to avoid contradicting each other and miscarriage. 4. It is necessary to replenish concentrate regularly and quantitatively. -- to strengthen the scale of epidemic prevention and control, breeding should pay attention to epidemic prevention, and once an infectious disease breaks out, it will cause huge losses. Sheep pox, sheep fast epidemic, enterotoxicosis, dysentery, pneumonia, brucellosis and other diseases should be timely observed, prevented and treated. -- popularizing the technology of fattening and slaughtering lambs in that year due to the abundant and uneven rough feeding resources throughout the year, it is common for sheep to be "full in summer, fat in autumn, thin in winter and tired in spring". The best benefit can be obtained only by popularizing the fattening and slaughtering of Capricorn lambs in that year. The techniques to speed up the fattening of mutton sheep include tail amputation, castration, house feeding, supplementary feeding, greenhouse warm ring and other comprehensive measures. Where there are conditions, large-scale breeding can also use meat sheep weight gain agent, pellet feed and other advanced feeding techniques.