Feeding Techniques of Small-tail Han Sheep Breeding Male and Female Ewes
As the saying goes, "The rams are good, good slopes are good, ewes are good, and there is a good nest." From this we can see that the rams have a great impact on future generations, require a more elaborate rearing and management, and strive to maintain a good and healthy breeding condition throughout the year. Can not be too fat, not too thin, only in this way, breeding ram in the breeding period to maintain strong sexual desire, semen quality is good, to ensure and improve the utilization rate of rams. The breeding of breeding ewes should also maintain a good level of nutrition in order to raise the weight of the nest, to better achieve the requirements of multiple births, high yield, more live, and my strong. I. Breeding of rams (1) Feeding rams of non-mating rams In addition to providing sufficient heat during the non-breeding period, attention should also be paid to adequate supply of nutrients such as protein, vitamins, and minerals. There is no breeding ram male 80-90 kg task, usually about 1.5 kg of feed units, about 150 grams can digest crude protein. In the non-breeding period, the sheep farm supplies 0.4 kg of concentrate, 2-2.6 kg of hay, 2 kg of silage, and 0.5 kg of tuber feed, and supplies bone meal salt all year round, insisting on grazing and exercising. (II) Breeding of breeding rams in breeding season In the breeding period, the nutrients required for 1 milliliter of ram ejaculation are equivalent to about 50 grams of digestible crude protein. Therefore, it is necessary to add more than 500 grams of concentrate every day. It has been proved that rams obtain sufficient protein quality, have strong sexual function, high sperm density, and high conception rate of ewes. Therefore, the ram's diet should be gradually increased from the non-breeding period to 1-1.5 months before breeding. Breeding standards for breeding period. The male ram with a weight of 80-90 kilograms needs more than 2 kilograms of feeding units per day, more than 250 grams of digestible crude protein, and gradually raises the standard amount of feed and other special beverages (eggs, skim milk) as the number of daily picking operations increases. . Seeds are supplemented with 0.8-1 kilograms of concentrate, 0.5-1 kilograms of milk, and 2-4 eggs each day during the breeding season. The average daily amount of bone meal supplemented is 10 grams and salt is 15 grams. For male rams with lower semen concentration, the amount of animal protein can be increased in the middle of the diet. For the male ram with poor sperm motility, the amount of exercise should be increased. Every day, grazing combined with exercise requires a fixed time and distance. Speed. Second, the breeding of breeding ewes (a) before and during the pre-pregnancy ewes feeding and breeding ewes at a higher nutritional level, can promote ovulation, estrus neat, concentrated lambs, most of the smooth delivery, easy feeding and management. Therefore, in the 1-1.5 months before mating, the breeding ewes should be given sufficient green fodder to supplement 20 grams of digestible protein every day to maintain good reproductive status. (b) In the second trimester of pregnancy, the ewes of the ewes during pregnancy are required to provide nutrients for the growth of the fetus in addition to maintaining their own nutritional needs. According to the study of the metabolism of heat energy of the Small Tail Han sheep, the thermal energy metabolism of the ewe in the late pregnancy is 17%-22% higher than that of the non-pregnant ewes. The requirement for protein also increased significantly. The ewes can deposit 20 grams of protein each day in the late pregnancy. Therefore, on the basis of maintenance needs, 40 grams of digestible crude protein must be supplied by the feed each day. Throughout the pregnancy, the volume of pure protein is 1.8-2.3 kg, and 80% of it is accumulated after pregnancy. In the first 4-5 months, 3.8 grams of calcium and 1.5 grams of phosphorus are deposited daily. Therefore, the standard of rearing ewes should be 30%-40% more than the previous day, and 40%-60% Digestion of protein, calcium, and phosphorus increases about 1-2 times. (3) The only food the breast-eating lamb feeds after birth is her breast milk for a certain period of time. The more lactating the ewes, the faster the lambs grow, the better the development, the stronger the disease resistance, and the higher the survival rate. In order to promote ewes lactation, their feed standards and feed quotas must be increased accordingly. According to research experiments, single lambs were fed to suckling ewes. The single lamb lamb gave 0.2 kg of fine material per day, 1-1.5 kg of silage, 0.5-1 kg of legume hay, 2 kg of hay, and carrots. 0.2-0.5 kg, and drink warm water and soy milk. The amount of supplements for the production of double-edible ewes is increased to 0.3-0.4 kg. Such diets can basically meet the feed standards for suckling ewes.