Environmental factors of breeding organic Rex rabbit

The environmental factors still have a great influence on the organic Rex rabbit. The main environmental factors affecting the production of organic Rex rabbit are: air, temperature, humidity, air flow, harmful gas content, dust, light and noise, pathogenic microorganism pollution and so on.

One of the biggest differences between large-scale rabbit farming and traditional rabbit breeding is that great changes have taken place in the small environment. The so-called microenvironment mainly refers to the microclimate indicators of the living space of organic Rex rabbits, such as humidity, temperature, ventilation, light, noise, harmful gases and pathogenic microorganisms. According to the investigation, most of the large-scale organic Rex rabbit farms in China have serious problems in environmental control. In particular, the high humidity, gas pollution and the increase of harmful microorganism concentration caused by high density feeding and poor ventilation worsened the microclimate of rabbit house and reduced the disease resistance of rabbits, which created conditions for infectious diseases. Humidity and temperature have a great influence on the rabbit: the rabbit's whole body is densely covered with sweat glands only at the end of the nose, which is mainly by breathing and cooling to maintain the balance of its body temperature. Some people say that "rabbits are afraid of heat but not of cold", which is not entirely true. The critical temperature of rabbits is 5-30 ℃, and the optimum temperature is 15-25 ℃. When the temperature in the house exceeded 30 ℃, the survival rate of young rabbits decreased, the death rate of embryos increased, the semen quality and mating rate of male rabbits decreased, the appetite of rabbits decreased, the growth was slow, and the quality of skin was affected. If the room temperature lasts above 35 ℃, the rabbit's body temperature will rise rapidly, resulting in heatstroke or even death. However, if the room temperature is lower than 5 ℃, it will be disadvantageous to the reproduction of Rex rabbits, especially the breeding of young rabbits, and even freeze to death, and the feed consumption of adult rabbits will increase and the benefit will decrease. The air humidity in the organic Rex rabbit house is too high, and the environment is moist and dirty, which is not only easy to induce a variety of diseases, but also increase the harm of high temperature and low temperature to large and small rabbits. However, the humidity is too small and too dry, which will also have an adverse effect on the fur of Rex rabbits. The influence of the noise of firecrackers and cars on the Rex rabbit: the sound of firecrackers and the sound of cars have a certain influence on the production of Rex rabbits. The Rex rabbit is a weak animal and is very timid. Sudden shock and strong noise cause nervousness and loss of appetite in rabbits; pregnant rabbits have a miscarriage, and they refuse to feed or even kill their young rabbits. The serious ones can also cause the rabbits to die suddenly because they are scared out of their guts. From this we can see that it is very important to keep the rabbit house quiet. First of all, the rabbit house should not be built in a noisy place; setting off fireworks near the rabbit house should be prohibited, and non-breeders or other livestock and poultry should be prohibited from entering the rabbit house casually. Secondly, the breeding and management personnel of the rabbit farm are required to avoid making loud noise or making a sudden loud noise in the rabbit house, in addition to feeding, adding water, breeding, cleaning and other actions. Harmful gases and dust harm to rabbits: the harmful gases in the rabbit house are mainly ammonia, hydrogen sulfide and carbon dioxide. The dust mainly comes from the dust inside and outside the house and the crushing feed which is eaten directly. If the content of harmful gas and dust in the air is too high, it will produce strong stimulation to the nasal mucosa and eye mucosa of rabbits, which can easily cause rhinitis, conjunctivitis and other diseases, and cause serious harm to adult rabbits. Therefore, should always keep the rabbit house clean and dry, timely removal of feces and urine, especially rabbit urine, good ventilation; feeding powdered feed must be wet. The simplest method of determination is based on human perception. When people enter the rabbit house and feel the air is fresh and has no pungent smell, it shows that the content of harmful gases and dust in the house basically meets the hygiene requirements. The above main environmental factors are important conditions for the success of indoor scale rabbit raising. It is necessary to strengthen environmental control and optimize the rabbit house environment, which is an important link of indoor scale rabbit breeding. Therefore, when building an organic Rex rabbit farm, we must pay attention to the selection of the site, the layout of the building, whether the design of the rabbit house and the selection of equipment are reasonable, which is directly related to the working efficiency of the large-scale rabbit farm and the economic benefits. Even the success or failure of breeding. In the production of organic rex rabbits, some rabbit farms often ignore the importance of site selection, such as topography, surrounding environment, dominant wind direction, whether water and electricity is conducive to epidemic prevention, whether it is conducive to rabbit production and personnel's work and life, etc.; ignore the zoning principles of buildings (life and welfare area, work management area, rabbit production area and epidemic prevention isolation area), especially the distinction between clean roads and pollution roads The basic parameters of rabbit house construction are ignored, such as the orientation, length, height, span and spacing of rabbit house, the size, height and layout of doors and windows, the width, slope and smoothness of ditch, the material, thickness and anticorrosion, moistureproof and thermal insulation design of wall and ground, and the design of rabbit cage, material selection and cage selection, etc. All these directly or indirectly affect the effect and benefit of the large-scale rabbit farm. In addition, according to the investigation, most of the large-scale rabbit farms in China adopt three-layer overlapping rabbit cages, generally raising 2.31 breeding rabbits per square meter, while in foreign developed countries, single-layer hanging type or double-layer ladder and semi-ladder type are mostly adopted, and three-layer overlapping type is rarely used. The increase of feeding density leads to the deterioration of microclimate, which is the main cause of low production performance and disease in large-scale rabbit farms.