The Investigation Report In Breeding Process Of New Species About Hornless Fine Wool Sheep

Hornless fine wool sheep was brought in by Australia merino without Angle of RAMS and king beck, bond ewes through progressive hybridization 2-3 generation, select ideal type offspring to crossing fixed cultivation. Its appearance: strong constitution, mate, ewe are no Angle, ear thick elastic; Head hair connection among the birth of two eyes, back waist straight, chest deep wide; Ram the neck has a complete or incomplete horizontal folds and developed longitudinal folds, ewes have longitudinal folds, trunk loose skin, the hindquarters muscle plump, limbs, coat with good, hoof and strong, with a rectangular trunk. Wool quality: the coat is good, the structure of hair plexus, evenness divide evenly, soft, good gloss, good strength, the density of hair is longer, and the fineness degree of the bending normal,21.6-25 microns, the grease content is moderate, with a white, milky white, Lana show hair plexus structure, density, abdominal hairs not less than 6 cm long. Reproductive performance:more than 125% of sheep breeding production rate. Meat performance:adult sheep slaughtering rate more than 48.0%.Application of Australia merino without Angle of RAMS and genotype of similar beck, progressive hybrid bond ewes, cultivating Chinese Angle fine wool sheep, the technical route at first; Angle of cultivating Chinese no fine wool sheep has a large body, long hair, wool production quantity is high, the production characteristics of meat and wool quality more good, each performance index is higher than other varieties of fine wool sheep, domestic production performance and body image is close to or reach Australia merino level; Using blood physiological and biochemical indexes and production performance correlation, the density of the skin and wool quality correlation, breeding value, genetic parameter estimates, design and application of computer aided system and modern biological breeding technology such as embryo transfer, accelerate the varieties bred; In sheep skin quality and the density of wool, wool bursa character of objective measurement study, filled the domestic blank.China no Angle of fine wool sheep resistance is strong, it can be adapted to temperate and warm temperate and cool arid, semi-arid and semi-humid area, can be applied to the fine wool sheep breeding area of our country. Use the way such as barn feeding, half barn feeding and grazing. Due to its genetic stable performance, fast growth, wool are of good quality, the meat performance is good, can be used to improve other fine wool sheep in our country.Choose China without horn fine wool sheep to reference no Angle fine wool sheep breed standards of the People’s Republic of China and the China Angle appraisal standard of fine wool sheep varieties, breeding according to the Chinese without Angle of fine wool sheep breeding, breeding, feed nutrition, disease prevention and control of specifications to do. But the difference between it and other varieties of fine wool sheep breeding is not big, no special requirements. It has the characteristics of cold resistance, suitable for sand drought environment, strong adaptability. To cold temperature semi-arid, cold warm moist, temperate, temperate semi-arid drought, temperate semi-humid, semi-arid temperate humid warm temperature region showed good adaptability, suitable for the annual average temperature between 5-10℃,annual average rainfall of 150-500 mm between, it is advisable to relative humidity to 40% 60%. Grazing is warm drought and desertification grassland, grassland vegetation in cyperaceous and Artemisia plant community for its dominant species, accompanied by shrub plant association. Pasture are flat or gentle slope hilly region all can adapt. But under the condition of relatively good management barn feeding or half barn feeding, China has no Angle of fine wool sheep can better play to the superiority of production performance.At present, our country has entered the world sheep breeding production country, amount of 190 million sheep,2012 sheep on hand, such quantity in the world first, but the group production level is low, cultivation of fine wool sheep varieties in our country, the common body small, low production volume is low, the net rate of MAO shortcomings. China has no Angle of fine wool sheep production performance in a leading position at home and abroad, is close to or reach Australia merino sheep, can completely replace the imported breeding sheep. According to the country every year at least 100000 kinds of ram calculation can save lead sheep costs RMB 2 billion; Such as the improvement of fine wool sheep, northeast wool length increase 1 cm, can make the wool quality improve a grade, clean wool rate increased by 10.13%, a net increase 1.1 kg, MAO increased by 46%; Weight 7.5 kg, slaughter rate increased by 2%; This means that the sheep net MAO could increase to 150000 tons per year,100000 tons of mutton, the benefit is enormous.Due to improved the performance of production per sheep, sheep breeding will be cut relatively, greatly reduce the pressure of grassland, conducive to vegetation restoration and ecological construction, very suitable for severe degradation of natural pasture conditions in our country, its competitive advantage obviously, the market potential is tremendous, social benefit is remarkable, therefore said the Chinese have no Angle of fine wool sheep promoted application prospect.