Key Techniques to Improve the Quality of Rex Rabbits

Variety Breeding Due to the fact that each rabbit farm has different situations, different scales, and uneven quality of personnel, the development of a guiding breeding program should be highlighted. Based on the genetic correlation of different traits, we finally determined a simplified breeding indicator that was based on self-selection, supplemented by a small amount of introduction, body weight, coat length and flatness.
Seed scoring criteria are shown in Table 1:
Regarding the issue of breeding programs: Breeding involves two specific tasks: seed selection and selection. The two are based on each other and are prerequisites that complement each other and are indispensable. In the production of many rabbit farms in the breeding and breeding of rabbits, only look outside, do not conduct systemic measurements and records. There is no strict selection difference. In other words, the arbitrariness of selection is great. I was glad to stay a few more, and which one was pleasing to the eye, which was very blind. The first option is to choose a species:
First, the breeding program, who is assigned to whom. According to ancestry, age, coat quality, body type and other qualities, formulate matching scheme. All the rabbits in the rabbit group were divided into three six nines, etc., and the first-class rabbits were used as the core breeding population, and their descendants were the main targets of the reseeding. Prior to the selection, excellent genes were systematically reorganized to consciously produce excellent individuals.
Second, stage selection. Selection is a meticulous job, not a success. It is necessary to constantly observe from birth to mating and even third-born offspring, and select those excellent individuals through competition. At least four stages are required for selecting seeds: first, weaning; second, three months of age; third, initial allocation; and fourth, after offspring. Each stage has different selection content and focus. During the weaning stage, the weight of weaning litters, the number of weaned piglets, the weaning survival rate, and weaning uniformity should be the key points; at the age of three months, weight, feed consumption, and coat quality should be the key points; The coat's quality, sexual characteristics and disease resistance are the key points; the ability to nurture future generations will be the focus of future generations.
Third, choose poor. Choosing the difference is also the selected proportional relationship. In a group, the greater the difference in selection, the greater the intensity of selection and the selection of the best individuals. For example, a group of 300, 3 months of average weight of 2 kg, if all used as a species, the group's weight is 2 kg. If one chooses half as species, that is, if 150 species are selected, then the average 3-month-old body weight of the selected population may be 2.25 kg. If 25% of them are used as species, that is, if 75 species are selected, they may be selected. The average body weight of a group of 3 months is 2.35 kg. If 10% of them are used for breeding, 30 species are selected, and the 3 months old body weight of the group that may be selected is 2.40 kg. If 5% of them are selected, That is, only 15 were selected for breeding, and the average weight of 15 rabbits that could be selected reached 2.5 kg. This example is very simple. It is excellent and excellent. The more you choose, the better. It's never good to stay good or not.
Fourth, compare with the conditions. Select taboos one-sidedness and unfair competition. For example, if you select one of the two 3-month-old female rabbits and just look at your weight, A is 2.4 kg and B is 2.5 kg. You may quickly conclude that B was selected. However, this may not be the ideal choice. You should check the records: A and B are several siblings at the time of weaning and how much they weigh; if they are the same, this explains the problem. If we have 5 weaned siblings, weaned body weight is 0.6 kg, and B is 8 and weaning weight is 0.4 kg, then the choice of 3 months of age is not fair just to look at the weight. Another example is to select one of the two female A and B female rabbits at the time of weaning. Not only the number of litters, lactation, maternality and weaning survival and weaning weight are important, but more importantly, when mating early, the breeding should be done programmatically, using the same male rabbit breeding, and this male rabbit There was no blood relationship with both females.
Fifth, enough quantity. For example, comparing five species of male rabbits, just looking at the weight, body shape, and coat can not fully explain the problem, and let them breed at the same time. There are enough female rabbits to look after and represent the present. The results of only one child can not explain the problem, the more the number of fetuses, the greater the accuracy of selection.
Feed and nutrient feed and nutrition are among the most prone to problems in production. The author's experience: unified nutrition standards, scientific design of feed formulations, strict control of raw material quality is to ensure feed quality and nutrition "three key." In the nutrition standard, based on years of experimental research, we have made reference to the research results at home and abroad, formulated the recommended amount of nutrition for different physiological stages of Rex rabbits, and designed the key fodder and rabbit-raising households according to the characteristics of the feed resources in different regions during formulation design. Full-price diet formula; in the aspect of quality control of raw materials, special emphasis is placed on “three controls”: control of mycotoxins in roughage, control of antinutritional factors in legume feed, and control of consumption of toxic feeds (such as cottonseed meal and rapeseed meal). To ensure the safety of rabbit production. In this regard, we remind everyone that in a rabbit farm that does not have formula design technology and raw material control and purchasing power, it is better to use commercial feed with higher reputation. This may be more cost-effective and more effective than its own ingredients.
Frequent problems in reproductive technology reproduction: Some rabbit farms have a high reproductive rate, but the survival rate is very low, while some rabbit farms have low reproductive and survival rates. We analyzed the reasons for the above two situations. The first situation occurred mainly in small-scale family rabbit farms. Both the conception rate and the number of litters were high, but the problem was that the control of the number of breeding pigs was unfavorable and the number of rabbits per litter was excessive. The more breeding, the more deaths there are; the second situation is mainly large-scale rabbit farms and new breeding farms, and lack of management experience. In particular, high temperatures in the summer caused damage to the testes of male rabbits, resulting in low fertility rates in autumn and early winter. Based on this, we have proposed the control of the number of births within 6 births and the number of litters (generally controlled within 7 animals, based on the maternal and lactation capacity of each female). The temperature control of the bunnies feeding environment in the summer, that is, the "three control" key technology, achieved better results.
Disease prevention and control disease is a problem in some rabbit farms. The root cause of the problem lies in the unfavorable control of the disease. The main focus is on treatment, and the key to prevention is not captured. In this regard, we have formulated a "three steps" comprehensive disease prevention program that strengthens health management and focuses on disease prevention and control of major diseases:
The strengthening of health management is mainly for feed hygiene, drinking water hygiene, cage hygiene, environmental hygiene and personnel hygiene.
About the problem of excrement: Is it better if you work harder? Some rabbit farms clear their excrements 7 days, the result is not clear feces is not the disease, a clear feces, it is sick, because of holding a broom and disorderly pull, so that the pathogenic microorganisms in the feces contaminated the entire rabbithouse. Cleaning manure is not based on the number of times, but also pay attention to the skill of removing manure and eliminate pollution.
Regarding the disinfection problem: Is it better to work harder? Some rabbit farms are sterilized one to two times a day, and the more serious the disease is, the more disinfected the disease is. why? Each disinfection is a kind of stress to rabbits. The smell of general chemical drugs will cause irritation to the nasal mucosa, leading to rhinitis. Disinfection should be eliminated: pedals, feed troughs, drinking fountains, crates, and mats, that is, rabbits' living environment has the largest impact on their health.
Rhinitis has a direct relationship with ventilation and is highly related to humidity. High humidity and poor ventilation are two major causes of infectious rhinitis.
The main reason for the collapse of several intensive rabbit farms in China is dermatomycosis. The key is not to solve the problem of good humidity.
Personnel hygiene do not take the form. Hands, feet, and heads are the keys. Walking from the front of the UV lamp does not solve any problems.
Implementing "prevention based"
The author believes that rabbit farms should pay attention to disease prevention, dilute the treatment, and establish the concept of "prevention from disease, disease prevention and treatment". Under the premise of doing a good job of feeding and management, we will focus on the two links of active immunity and drug prevention. Simplified immunization procedures. In general, rabbit farms only inject one vaccine—rabbit vaccine; in rabbit farms, 2 or 3 vaccines are injected, which means that Pap(II)-Polluvic seedlings are injected separately (basic vaccine only is ineffective). , Clostridium perfringens vaccine; For diseases without vaccine control, take drug prevention, first recommend non-polluting biological drugs. Especially in the prevention of diarrhea, the use of probiotics can receive better results.
Control of major diseases will be rabbits, coccidiosis, diarrhea disease as the main control object. The three diseases are controlled and more than 50% of the rabbit's mortality can be avoided.
The above is a key technical aspect of how to produce a good rabbit. However, the real production of rabbit skin still requires two aspects: slaughter time and rabbit skin care. According to the law of the growth of rabbits, the best slaughter at 5-6 months is the best, and the quality of the skin is affected too early and too late. In addition, the skin must be preserved scientifically.

Seedling

Robinia Pseudoacacia,Sophora Xanthantha,White Tephrosia,Pigeon Pea

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