1. The fat and oil should be fed in an amount appropriate to the maximum amount of oil in the diet of the dairy cow not exceeding 7% of the dry matter in the diet. Under normal circumstances, the basic dairy cow diet itself contains about 3% of fat, therefore, the amount of supplement shou…

Vitamin E is closely related to the reproductive performance of chickens. Vitamin E regulates gonadotropin by regulating the secretion of gonadotropins in the anterior pituitary. When the cock lacks vitamin E, the testis 9 becomes atrophy, sperm movement is abnormal, and sperm cannot even be p…

First, when the aphrodisiac female rabbit does not have estrus, male rabbits may be forced to breed to stimulate ovulation in female oestrous estrus. Aqueous benzoate was used for benzoic acid, and 0.1 ml per rabbit was injected intramuscularly. After one day, the animals can be estrus and…

As typical herbivores of the genus, most of the sheep were grazing in the past. In order to protect the ecological environment, the sheep's forage, feed preparation, and feeding methods affect the economic benefits of raising sheep. The key technologies in this area are briefly describ…