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Small-tailed Han sheep is a meat-and-flesh type, which is mainly based on meat, and the value of wool is not great.
The sheep has the advantages of high physique, early maturation, high reproduction rate, high yield of multiple births, estrus breeding in four seasons, and strong adaptability, but it also has certain disadvantages. First, despite its high physique, meat production performance is not very good, mainly due to its narrow body, underdeveloped chest, hindquarters are not full, ribs are not enough to open, legs are long and thin, and thus directly affect its production of meat Second, its low wool production and heterogeneous hair does not meet the requirements of wool spinning raw materials.
In order to improve the meat production performance and wool quality of Small Tail Han sheep, and exert its best economic benefits, in addition to the selection and breeding of this species and scientific breeding, it is necessary to introduce external blood.
In other words, it is necessary to use foreign varieties to carry out cross-breeding and improvement, and to overcome some of the disadvantages of the variety by introducing exogenous blood and further improve its production performance. At present, Henan Province has used rams such as Dorset, Merino, and Charlotte to improve small-tailed sheep. The results of the hybridization test showed that the hybridization advantage was very obvious. According to the test of Yuanyang Qing Grassland Animal Husbandry Co., Ltd., the use of hornless Dorset rams and local sheep of the Small Tail Han sheep was crossed. Under normal feeding conditions, both lambs and lambs were faster than lambs of Small Tail Han sheep. The average body weight of 6 months can reach 45 kg. At the same time, the lambing rate inherited the characteristics of a small lamb with a single lamb and the lambing rate was about 270%. According to a report from the Lanzhou Institute of Animal Husbandry, Chinese Academy of Agricultural Sciences, a two-year hybrid (Dawn Dorset ram sheep with Small Tail Han sheep) was born. The 6-month-old pupae of the hybrid sheep were 24.4 kilograms, which is less than 8 months old. The mutton weight was 6.13 kilograms, and the carcass net meat ratio was 79.11, which produced 4.85 kilograms of net meat. For example, if the mutton costs 13 yuan per kilogram, each 6-month-old hybrid lamb will earn 63.05 yuan more than each 8-month-old lamb.
This shows that the introduction of external blood for hybridization and improvement is the best way to improve the economic efficiency of Small Tail Han sheep. For this reason, it is recommended that small-tailed sheep breeding areas (except for conservation areas) should be planned and step-by-step to carry out cross-breeding. Conditional companies and field companies can directly purchase breeding goats for cross-breeding or use artificial insemination techniques for hybridization and improvement. .
Small Tail Han sheep are improving
Small-tailed Han sheep are the dominant species of sheep in Henan Province. It is understood that the amount of small-tailed Han sheep accounts for about 1/2 of the total sheep population in Henan Province. In Henan Province, small-tailed Han sheep are mainly distributed in areas north of the Yellow River, such as Anyang, Hebi, Jiaozuo, Xinxiang, Fuyang, and especially in Taiqian County. Due to its many excellent characteristics, the Small Tail Han sheep has improved its market sales over the previous years and its price is moderate. It is deeply loved by more and more sheep farmers.