Sheep structure doubles the benefits of raising sheep

Herd structure mainly refers to the sheep's age structure and gender group structure. The gross wool yield, body weight, and lambing rate of general fine-wool sheep and semi-fine wool sheep increase with age, and their wool yield and wool quality gradually decline after age 4. Therefore, the inappropriate age structure of the sheep will have a direct impact on the economic efficiency of sheep farms. In ordinary sheep farms, sheep are mixed in groups of other ages except for the individual group of sheep that are under the age of one. Without expanding the group, the young ewes aged 2 to 5 years in the adult ewes account for about 70%, the ewes need to be replenished every year, and about 22% of the 1 year old ewes. About 10% of sheep need to be eliminated each year from the flock of older birds. Older ewes older than 6 years old should generally be eliminated, and individual healthy elite ewes can stay in the ewes. The ideal age structure of the flock is that young sheep account for 22%, young sheep 68%, and old sheep 10%. The proportion of young ewes in sheep farms that have just been built or are being expanded may be appropriately increased. Under normal circumstances, the sheep are divided into male rams, adult ewes, bred ewes, rams, mutton sheep and rams. The breeding sheep farmer whose main purpose is to sell breeding sheep is to select excellent breeding rams for sale according to the demand of the breeding sheep each year. The remaining rams that do not use for breeding should be castrated from an early age. After the slaughter. The total number of adult ewes should account for 45% to 55% of the total number of sheep farms. In breeding ewes, non-seed sheep should be singled out and grouped individually and fattened for slaughter. In the economical sheep farms that sell sheep products (sheep, lamb, wool, etc.) for the main purpose, in the past when the price of wool was high, due to the high wool production and low feeding costs of sheep, there were a large number of adult sheep (4). Years old) Production of wool, adult ewes only account for about 35% of the sheep's total inventory. Nowadays, the price of mutton is relatively high. The cost of producing lamb meat is lower than that of producing old mutton meat. The turnover of funds is also fast. Therefore, the number of adult ewes should account for 60% to 70% of the total number of sheep farms. Each year, young ewes with high production performance are selected from the breeding ewes to replace old ewe that have low performance or lost reproductive capacity, accounting for about 22% of the total number of adult ewes. After selecting the remaining breeding ewes and oysters of the year they were used for fattening, sheep can be sold after the sheep have been sold or slaughtered. Whether it is a sheep farm, an economic sheep farm, or a sheep farmer, the composition of its flock should be based on the number of ewes. Under the conditions of artificial insemination, the number of male rams should account for 1% to 2% of the number of adult female ewes (a small-scale breeding sheep farm can prevent close relatives from mating, and rams can be about 3%). In addition, there must be 2% to 3% of the trial ram. Under natural mating conditions, one ram is required for every 25 to 35 ewes. China Agricultural Network Editor

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