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In the process of breed breeding, the consequences of sudden changes in any one trait (including forced changes made by human intervention and mutations caused by natural factors) will not only be changes in the trait itself, but will also be accompanied by changes in related functions. The original state of function harmony must be broken to varying degrees. This requires time for pigs (including other living organisms) to adjust and adapt themselves.
Some people have done tests specifically, the original pigs have driven blue-eyed maggots for 50-100 meters, the half-grown hybrid pigs have appeared blue eyes with half of the 100 meters or so, and all have different degrees of breathing. The original breeder is quiet in the limit column. Under the circumstances, 10-20% of sows have blue eyes. The reason for the blue eyes is that the pig's cardiopulmonary function cannot keep up with the rapid growth of the whole body, causing the blood oxygen levels in the blood vessels of the eyelids to fail to meet normal needs. In the anatomy, it can be seen that the size of the sow's heart shows two extremes: the normal pig heart is 0.28% of the body weight, and the sow heart of a 250 kg weight is about 0.7 kg, but the heart of many pigs examined is smaller than this value. , More than 0.5 kilograms, part of the pig's heart weighs about 2 kilograms, showing a clear heart expansion, pulmonary bleeding.
At present, pig breeds raised in China are basically from Western countries. These pig breeds are all cultivated under closely controlled environmental conditions. They have strict requirements on environmental conditions. They can't adapt to slight changes in living conditions and show a strong stress response. The environmental conditions in most of China's pig farms have not been able to achieve corresponding precise control and formed the so-called “pigeon feed†situation. This is just like the varieties of vegetables and fruits cultivated for greenhouse conditions and are not suitable for planting in the field.
2, a serious lack of exercise, body function can not get proper exercise is to improve the basic guarantee of pig health. The pig industry generally believes that reducing exercise can reduce feed consumption and increase growth. However, this understanding has gone to extremes. Growth is not only the deposition of nutrients, but more importantly the functioning. Life is movement, and the essence of life is the highest form of energy movement. Exercise and physical enhancement are the most basic principles.
3, the food is too fine, away from the original omnivorous diet pig physiological functions and immune cognition is based on the original omnivorous diet recipes. The pigs' original recipes include seeds, weeds and leaves, wild fruits, insects and non-animals, fungi, etc. Their nutrient sources include plants, animals, and microorganisms, as well as high levels of fiber. Nowadays, the feed used for large-scale pig raising is too delicate. Generally, corn pod-type formula diets are used. The recipe changes from the original omnivorous food to basic ones composed of crop seeds, which changes the original food structure of the pig and causes physiological function and immune dysfunction. .
4. Small and high-density living areas, small circles, single laps or even fences keep the pig's living space too small, have no chance to play, can not meet the living habits such as arch excavation, and cannot form a harmonious community relationship; the cement floor is hard Unpleasant environmental conditions such as cold and humidity all make the pig's nerves nervous or depressed. Nervousness puts the body in a state of alertness, consumes physical energy, fails to fully recharge the function, and naturally declines in immunity, suppresses the function of the body and does not give it proper play, and immunity is also affected.
5, mental suppression of advanced nerve center benign operation is the cornerstone to keep life healthy and vitality. Only when the pigs are in a free, relaxed and happy state of mind, can the nervous system perfectly coordinate the harmonious and efficient operation of the body function and maintain a healthy state. Only in this way can strong immunity be used to develop the potential for rapid growth. This not only meets the needs of the animal welfare of pigs, but also is the need for the sustainable development of the modern pig industry. It can adopt the technology of kingfisher dry-sweeping fermentation bed pigs. The biggest effect of the pigs in the kingpin dry-fermenting bed is to provide pigs with a free and comfortable living environment, satisfying the desires and habits of the pigs' lives. Warm and spacious sports space, immunity will naturally increase.
Why does the pig's physique fall?
1. Breeding of varieties breaks the balance of physiological functions among systems. In the process of breeding and breeding of breeds, commercial indicators such as growth rate and leanness are excessively increased. Immunity and other basic protection systems (such as cardiopulmonary function) lag behind the growth of the body. Balance of physiological function is broken.