Answer:
The nutrient level of the feed is too high, or the feeding amount is often excessive, making the female rabbit too obese. Over-fat female rabbits have high body fat content, more fat deposits in the oviduct wall, less elasticity, difficulty for the egg to move to the ampulla of the oviduct, hindering the combination of sperm and egg.
Nutritional deficiency
The low nutritional value of the feed or the insufficient daily dose can not guarantee the nutritional needs of the female rabbits. The female rabbits will have rough and dull coat, thin body, and arched back. When the female rabbit is too thin, the endocrine system is affected, the gonadal secretion is imbalanced, the estrus is not or the estrus cycle is prolonged; at the same time, the uterine mucosa is very thin, even if it is matched, it is not easy to sit in the fetus. If the nutrient level is too low, the secretion of gonadotropin-releasing factor in the hypothalamus is inhibited, and the secretion of other hormones is also affected. Endocrine disorders affect the survival of embryos, leading to a decline in reproduction rate.
Vitamin deficiency The vitamins related to reproduction are vitamin A, vitamin D, vitamin B1, and vitamin E.
Vitamin A: Vitamin A plays an important role in the growth and development, reproduction, and disease resistance of rabbits. It is an indispensable substance for maintaining the normal epithelial cells of various tissues and organs. Lack of vitamin A will keratinize the epithelial cells of the reproductive organs, and reduce the function of the reproductive system.
Vitamin D: Vitamin D can promote the absorption of calcium in rabbits and promote the growth of rabbits. If it is lacking, the rabbits will have soft bones and hinder reproduction.
Vitamin E: Vitamin E, also known as tocopherol, plays an antioxidant role in rabbits and prevents the oxidation of unsaturated fatty acids in the body. When vitamin E is deficient in rabbits, the unsaturated fatty acids in the rabbits are excessively oxidized to produce excessive peroxides, which can cause pathological changes in the shape and function of reproductive organs, destroy reproductive cells, and cause reproduction disorders.
Vitamin B1: Vitamin B1, also known as thiamine, is the coenzyme part of the keto acid oxidation and decarboxylation reactions in the carbohydrate metabolism in rabbits. When vitamin B1 is deficient, the metabolism of pyruvate is blocked, causing pyruvate to accumulate in the brain and blood and cause poisoning. Due to the obstruction of glucose metabolism and insufficient energy supply, neurological dysfunction is caused. Female rabbits will experience ovarian atrophy, follicular development stagnation, embryos will be absorbed and empty, and pregnant female rabbits will experience stillbirth and abortion. After giving birth, the baby rabbits will have weak vitality and lactation. Drop etc.
