As the saying goes: "The rams are good, good slopes: the ewes are good and they have a good nest." From this we can see that the rams have a great influence on their offspring, require a more elaborate feeding and management, and strive to maintain a healthy breeding condition all year round. They must not be too fat or too thin. Only in this way, the male ram can maintain a strong sexual desire during the breeding period, and the semen quality is good, thereby increasing the utilization rate of the ram. The breeding of breeding ewes should also maintain a good level of nutrition in order to improve litter weight, better achieve multiple births, high yield, more live, more robust. Feeding of 1 ram 1.1 Feeding rams of non-mating rams should not only supply sufficient heat but also pay attention to the adequate supply of nutrients such as protein, vitamins and minerals during the non-breeding period. 80-90kg rams that do not have mating tasks generally need about 1.5kg of feed each day, and about 150g of crude protein can be digested. During the non-breeding period, the sheep farm supplies 0.4 kg of concentrate, 2.0-2.6 kg of hay, 0.5 kg of tuber feed, and supplies bone meal and salt all year round, insisting on grazing and exercising. 1.2 Breeding of rams during breeding period In the breeding period, the nutrients required for 1 mL of ram ejaculation for 1 mL are equivalent to approximately 50 g of crude protein. Therefore, it is necessary to add more than 500g of fine material each day. Practice has shown that rams get sufficient protein, sexual function is strong, sperm density is high, and ewes have high conception rates. Therefore, from 1 to 1.5 months before mating, the ram's diet should be gradually increased from non-maturing to mating. Period feeding standards. 80-90kg rams need more than 2.0kg feed units per day, more than 250g can digest crude protein, and gradually increase the amount of feed and other special feeds (eggs, skimmed milk) as the number of daily picking increases. The rams supplement 0.8 to 1.0 kg of concentrate each day, 0.5 to 1.0 kg of milk, and 2 to 4 eggs every day during the breeding period. The average daily amount of bone meal supplemented is 10 g, and salt is 15 g. For male rams with lower semen concentration, the amount of animal protein can be increased in diets. For male rams with poor sperm motility, the amount of exercise should be increased. Every day, in combination with grazing, the required time, distance, and speed. 2 Breeding of breeding ewes 2.1 Pre-mating and pre-pregnancy ewes breeding and breeding ewes at a higher nutritional level, can promote ovulation, estrus, lambs, concentrated, most of the smooth delivery, easy feeding and management. Therefore, 1 to 1.5 months before mating, the breeding ewes should be given sufficient green fodder to supplement 20g of digestible protein every day to maintain good reproductive status. 2.2 Feeding of ewes during the second trimester The ewes during pregnancy, in addition to maintaining the nutrients they need, need to supply the nutrients needed for the growth of the fetus. According to the study of the metabolism of the energy of the Little Tail Han sheep, the thermal energy metabolism of the ewes in the late pregnancy is better than not Ewes are 17% to 22% higher and their protein requirements are also significantly higher. The ewes can deposit 20g of protein each day during the second trimester of pregnancy. Therefore, on the basis of maintenance needs, 40g of digestible crude protein must be supplied from the feed every day. During the whole pregnancy, the volume of pure protein was 1.8-2.3 kg, 80% of which was accumulated in the later period of pregnancy. The daily deposition of calcium and phosphorus in 4-5 months was 3.8 g and 1.5 g respectively. Therefore, pregnancy Feeding standards for late ewes should be increased by 30% to 40% of feed units per day, 40% to 60% of digestible protein, and calcium and phosphorus increase by about 1 to 2 times. 2.3 The only food the breastfed ewe feeds for a certain period of time is breast milk. 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 the experimental study, in the single- and double-wool groups of nursing ewes, single lamb lambs should be given fine 0.2 kg per day, silage 1 to 1.5 kg, 0.5 to 1.0 kg of legume hay, 2.0 kg of hay, and 0.2 carrots. ~ 0.5kg, and drink warm water and soy milk, double lamb production of ewes mixed concentrate supplement to 0.3 ~ 0.4kg, so that the Japanese sugar can meet the basic feeding standards for nursing ewes.
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