How to improve the Fur quality of Rex Rabbit in breeding Rex Rabbit

Rex rabbit is a typical leather rabbit, its coat is short, flat, dense, fine, beautiful, fast and so on. Rex rabbits are often raised as ordinary wool rabbits in rural areas, resulting in low level of feeding and management, small individuals, poor fur quality and low commodity value. In order to improve the fur quality of Rex rabbit and increase its economic benefit, the author summarizes the following four techniques in the process of raising Rex rabbit according to his own working practice and the physiological characteristics and living habits of Rex rabbit. it is of great benefit to improve the fur quality of Rex rabbit.

Economic Hybridization and breeding techniques of excellent varieties

At present, there are American, German and legal systems of Rex rabbit, and each strain has its own advantages and disadvantages. The American Rex rabbit has high fecundity, while the German Rex rabbit has the highest growth potential. In some places, interline hybridization is mostly used, generally using the American Rex rabbit as the female parent, German or French as the male parent, or the American Rex rabbit as the female parent, and the legal system as the first male parent to cross the first generation of female rabbits. then cross with the second father-to-German Rex rabbit to form three-way hybrid offspring. The offspring of the hybrid are fattened directly, so as to ensure the weight, quality and fur quality of the fattening rabbits. At the same time, in the process of breeding, Rex rabbits should be selected properly, such as female rabbits with large body size, good shape, good reproductive performance (mating conception rate, number of offspring and weaning survival rate, etc.) and good motherhood as breeding female rabbits. Rex rabbits with large body weight, fast growth rate, good coat density, high mating fertilization rate and high average survival rate of offspring were selected as male rabbits. As a result, a large number of excellent offspring are selected and a large number of leather sheets with large fur area and good quality are produced.

Early weight gain technique

The area of Rex rabbit skin plate is proportional to its body weight. A large part of the rabbit's weight depends on early development and weight gain, to achieve this goal, as far as possible to produce newborn rabbits, to achieve the following four points:

① should improve the feed nutrition level of female rabbits in the later stage of pregnancy and appropriately reduce the number of births of female rabbits, so as to increase the birth weight of offspring rabbits.

② rabbits should eat colostrum as early as possible during lactation and provide more high-energy and high-protein feed to lactating female rabbits so that they can eat nutritious and adequate milk.

The feed of ③ weaning rabbits should be nutritious, and the digestible energy should reach 12 megajoules / kg, crude protein 20% 22%, crude cellulose 6% 10%; at the same time, appropriate amounts of vitamins, trace elements, compound enzyme preparations and drug additives should be added to ensure high nutritional value, easy digestion and good palatability of the feed, so as to achieve daily gain.

④ insists on weaning rabbits without leaving their nests, living in the original cage, keeping feed, environment and management unchanged, and minimizing stress complications, so as to ensure that weaning rabbits weigh more than 500g at 30 days and more than 2000 grams at 3 months old.

Front-promoting and back-control technology

Because the fur quality of Rex rabbit is not only related to the area, but also to the density of the coat and the maturity of the skin plate. If only body weight and skin area are taken into account, the first-class skin area can be reached at the age of 3 months to 5 months under good feeding conditions, but the thickness, toughness and strength of the skin plate are insufficient, and the utilization value of producing leather sheet is low. The front and back control technology can make the Rex rabbit skin with good quality, no excess fat and connective tissue under the skin, and the density of the coat and the maturity of the skin plate can easily reach the standard; at the same time, it can save feed and reduce the feeding cost. The pre-promotion and post-control technology is to raise the nutrition level in the early stage and properly control the nutrition level in the later stage. Specific measures: when weaning rabbits are 3 months old to 5 months old, the nutrition level of feed should be improved, the protein content should reach 17.5%, and free feeding should be adopted to make full use of the characteristics of rapid growth and development in the early stage to tap the genetic potential of its growth. after that, the nutritional level of feed should be properly controlled. Two control methods are often used: one is to control the quality of feed, so that its nutrition level is reduced by 1%, energy is reduced by 1%, protein is reduced by 1%-1.5%, and free feeding is still adopted; the other is to control the amount of feed, which is equivalent to 80%-90% of free feeding, while the feeding standard and feed formula are the same as in the previous period.

The technique of getting skin from hurdles at the right time

Timely taking skin from the fence is the most important link in the production of commercial Rex rabbits, and the time should be determined according to the season, body weight and the performance of the rabbit group. Under normal circumstances, the body weight reaches 2.5 kg ~ 3 kg after May to June, the coat is rich and neat, the plush is rich, and the thickness and toughness of the skin meet the requirements of processing (that is, the end of the second age hair change); at the same time, the removal and fluffy shape of the coat should be carefully checked. Normal to avoid the spring and autumn season, generally in November after March before the best slaughter, but absolutely not in the hair change period out of the fence to take skin.