Rabbit Reproduction Technology

1. Sexual maturity and initial mating age. Reproductive indicators of Rex rabbits under normal feeding management and normal nutritional conditions are: Male rabbits are sexually mature 3 to 3.5 months old, but the initial allocation can not be less than 4 to 5 months of age weight must reach 5 kg or more, Female rabbits: Sexual maturity 3 - 3.5 months old, the initial allocation can not be less than 4 months of age, the weight must reach 4.5 kg or more. Only breed breeding.

2, female estrus cycle, estrus performance and the best timing of breeding, the female estrus cycle is 8-15 days, each estrus will last 2 to 3 days, estrus is sexual maternal rabbit caused by sexual excitement There is a manifestation of mating desire. The performance of estrus is: the female rabbit is active and disturbed, love is beating, appetite is diminished, the cage is biting, and active climbing is performed. The genitalia of the female rabbit are usually used to identify the estrus. The genitals can visualize the early pink of the mucous membrane, the middle red, and the late purple. The best breeding period is the middle of the estrus, ie pink early, purple late, and Dahong has proved that the female rabbit does not have certain heat. The law is that the breeder should diligently check his genitals to prevent missed estrus.

3, mating methods: 1 natural mating, the female rabbit placed in a male rabbit cage, when the male rabbit climbed, the female rabbit tail to cater to the completion of mating, the male rabbit fell to the side, issued a squeak and foot, To match the sign, wait for it to stay for 2 to 3 minutes, gently catch the female rabbit, turn it upside down and pat the buttocks, put it back into the original cage, and after 6 hours, use the same male rabbit to reconstruct it once. Matching records can be. 2Manually assisted mating, when female rabbits come into contact with male rabbits, they are reluctant to elevate to cater. Male rabbits are unable to mate, and artificial assistance can be taken. That is, they hold the tail of the female rabbit and pull it from the back to the front. The helper grasps the ear with one hand. With the neck and string, the other hand stretches towards the hindquarters of the female rabbit and raises the arms slightly to allow the rabbit to climb. After the mating is completed, the male and female are opened.

4. Pregnancy diagnosis: 1 Compounding method, compounded five days after the female rabbits are mated, and may refuse to mate. 2 Weighing method: weigh 2-3 times within 7 to 14 days after mating. If the body weight is significantly increased, you may become pregnant. 3 Touch method Touch method is the best method. Usually 10-12 days after mating is the best time to touch the fetus, the specific method: the examiner's left hand to seize the rabbit ears and neck rabbit head to the examiner, the right thumb and the remaining four fingers were separated by a figure eight, extending toward the mother's abdomen The inside of the lower leg, palms up, gently touch from front to back. If the abdomen is loose and soft like cotton, it means the end of pregnancy. If you touch an ellipse meatball that resembles the size of a bean, and it is elastic and slides, it is a fetus and you can be diagnosed with pregnancy. However, it must be noted that when the female rabbit is full, it is not appropriate to touch the tire.

5, scientific reproduction: female rabbit breeding can be based on the female rabbit's body condition using different breeding:

1 Frequent breeding: also known as blood matching, that is, mating again within 24 hours of maternal birth. This breeding consumes large amounts of body condition and affects the survival rate of young rabbits. Only when the female rabbit has a good body condition and has few litters, this method is used. 2 Semi-frequent reproduction: In the female rabbit, 8-15 days after childbirth, start checking the breeding, which is the best breeding, which does not affect the body condition of the female rabbit, but also can improve the reproduction rate. However, for the weak constitution, there are many litters, but also This method should not be used. 3 Prolonged breeding, both after the weaning of the female rabbit, started to check the mating, this breeding is generally used in the female constitution is weak, and there are many litters.

6, scientific management, updated breed rabbits: Breeding rabbits to provide high-quality full-priced feed. Adjusting the lyrical condition to ensure its optimal body condition and maintaining a long-term fertility level. Another important issue that cannot be neglected is to regenerate the breeding rabbit group, as the rabbits reach the breeding peak in their prime years and reproduce as they age. The force gradually weakens. At this time, it is necessary to adjust the breeder rabbits, eliminate old and weak residual rabbits, and renew young and middle-aged rabbits. In general, the young rabbits should account for 50% of the total rabbit population.

Goji Polysaccharides is a rare plant polysaccharides containing protein, which have side chains of polysaccharide composed by six carbon sugars (rhamnose, arabinose, xylose, mannose, galactose, glucose) and main chains of protein composed by 18 kinds of amino acids. The glycoproteins with biological activity is a high-strength immune enhancer.

Wolfberry products with stable quality are all natural, safe, sanitary and fast absorption.Lycium barbarum polysaccharide extraction and purification is divided into two steps. First, the extraction of Chinese wolfberry crude polysaccharides, the second is purified Lycium barbarum polysaccharide. Crude polysaccharides extraction process is as follows: Weigh dried crushed medlar, petroleum ether: acetone (1: 1) reflux degreasing, the solvent was filtered off, the residue was air-dried 80% ethanol off monosaccharide and oligosaccharides. 
The polysaccharide is extracted by water after dissolving the residues such as oligosaccharides in water at 90-100 DEG C, the extract is concentrated under reduced pressure, the polysaccharides are precipitated by ethanol, the precipitates are washed with anhydrous ethanol and acetone, and the lycium polysaccharides are dried under vacuum. The crude polysaccharide is purified by passing the Lycium barbarum polysaccharide through a column of DEAE cellulose with different concentrations of NaCl as an eluent, concentrating the eluates with different salt concentrations respectively under reduced pressure, desalting them by dialysis, and then lyophilizing them differently Grape Lycium glycoprotein.

Modern medical research suggests that wolfberry polysaccharides can improve human immunity and have functions as anti-cancer, cancer treatment, hematopoiesis, liver protection and hypotensive, free radicals removal , anti-fatigue, anti-radiation, and cell activity improvement; Goji polysaccharides can control cells division& differentiation, and regulate cell growth & aging, which is widely used in the pharmaceutical, health food and other fields.

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