First, the causes of feed
In order to ensure profits, some feed factories do not add added nutrients and preventive drugs or the dosage is insufficient, which leads to poor growth and improved feed ratio. What's more, some feeds contain mycotoxins, which directly leads to the atrophy of immune organs and the decline of body immunity, leading to secondary or concurrent viruses, bacteria and mycoplasma, resulting in immeasurable economic losses. Therefore, feed is the basis of breeding benefits. It is also necessary to make up for the deficiency of nutrients in feed by external supplementation in the later stage, so as to achieve the purpose of prevention first.
Second, drugs and epidemic prevention
Drug prevention and epidemic prevention are the guarantee of aquaculture benefits, and treatment is only a means. The purpose is to solve difficulties for farmers, improve production capacity and create greater economic benefits. Let's think about a batch of broilers, which have a feeding cycle of no more than 40 to 50 days, but are free from Newcastle disease, infectious diseases, avian influenza, bursa of fabricius and Newcastle disease. So many vaccines have destroyed the body's immune system to a great extent, knowing that the vaccine itself is a virus. I don't know if you have seen it. After the death of some chickens, the thymus gland becomes "pancake" or "atrophy" instead of a solid organ, the kidney is swollen and spotted, the spleen becomes smaller and necrotic, and the bursa of fabricius shrinks. How strong is the resistance of such chickens? Can you raise chickens well? And after the seedlings are finished, they should be taken immediately. Some people do not arrange drugs according to the age of onset and the reasonable collocation of drugs, blindly use a drug for a long time or without diagnosis, pay no attention to the use method and precautions, increase the dosage at will, and ignore the tolerance of the body, which not only makes bacteria resistant, but also brings difficulties to the prevention and treatment of diseases, and causes waste and increases the cost of breeding. At the same time, taking large doses of antibiotics for a long time can also cause immunosuppression. Many farmers asked me why I was vaccinated against a certain disease. Yes, although you have taken various measures to prevent pathogens from entering the flock, for various reasons, the flock may sometimes be polluted by a pathogen. Therefore, most chicken farmers vaccinate several vaccines in time according to the epidemic situation of chicken diseases in chicken farms and nearby areas, so that the chickens can form certain resistance.
It is worth emphasizing that although immunization can make chickens resistant to some diseases, if virulent pathogens invade chickens, they will inevitably cause losses to varying degrees. Everyone should always remember that good feeding management is the most effective way to prevent diseases, and vaccination is the auxiliary. Don't reverse your priorities, thinking that everything will be fine after vaccination and management will be relaxed.
Third, the quality of chickens.
Some informal or poorly managed breeders and hatcheries have relaxed the introduction, cultivation, disinfection and purification of special pathogens, and omitted vaccines for immediate benefits. How good can the quality of hatched chickens be? Some farmers only pay attention to the low price and ignore the quality of chickens, and even buy chickens from epidemic areas, which leads to the vertical spread of many diseases through eggs, as well as factors such as vitellitis, umbilical cord inflammation and dehydration, which directly affect the survival rate of chickens. It also increases the difficulty of feeding management. But then again, don't want every breeder farm to hatch chickens that don't carry germs. It is out of the question. Good chickens can be bad, and bad chickens can't be good. High-quality and healthy chicks are the basis of breeding benefits.
Fourth, the disease factors.
Some farmers think that they know everything after raising chickens for a few years. When they are sick, they dissect, diagnose and prescribe drugs for themselves, and regard veterinary drug stores as supermarkets. It's okay to have a minor illness, but it's yourself who is seriously ill. Some farmers simply don't trust veterinary drug production enterprises, blindly increasing the dose leads to organism poisoning, which directly causes economic losses. Some veterinarians are not skilled enough to diagnose diseases accurately, which causes the delay of illness, misses the best treatment time and increases the difficulty and cost of treatment. For example, when technicians see cases of pericardial liver at clinical autopsy, they are directly diagnosed as Escherichia coli. This diagnosis is one-sided. Among bacteria, pericardial liver is not a patent of Escherichia coli. However, the single occurrence rate of Escherichia coli is very low, which is generally caused by secondary or concurrent infection with other pathogens. Therefore, once E.coli comes on, we must find the root cause of the disease, and then treat it symptomatically, so that the drug can play the highest curative effect. There is also a kind of coccidiosis, which is very harmful to chickens. Pay attention to it. The same is true of raising chickens online, especially coccidiosis in the small intestine, which is ignored because it is not easy to be identified. This is also one of the main reasons why some chickens eat a lot but grow poorly, with different sizes, uneven faces and pale crowns. In addition, early coccidiosis infection can lead to the failure of bursal immunization, because coccidia eggs multiply at the same time, causing damage to intestinal mucosa, even if there is no symptoms of coccidiosis (first generation division stage), the main target of bursal vaccine antigen is intestinal mucosa. In the case of intestinal mucosa damage, antibodies against bursal disease will not be produced normally, which will directly lead to immune failure and immunosuppression. Under the action of two immune factors, other viruses and bacteria are linked, and several pathogens invade the body at the same time, leading to mixed infection in the later stage, which is one of the main reasons why broilers can not be slaughtered normally and the breeding efficiency is not high.
Verb (abbreviation of verb) scientific management
The schedule and requirements of feeding management in modern poultry industry are becoming more and more detailed and strict, and the level of feeding management is getting higher and higher. People pay more and more attention to the study of the relationship between nutrition and immunity. World-renowned poultry disease prevention and control experts believe that the most serious epidemic in the world is mismanagement syndrome. More than 80% of the problems in production are not caused by pathogenic microorganisms, but by insufficient feed nutrition, light, air and drinking water, which can be overcome by strengthening feeding management. Scientific management is the core of breeding benefits.
External environmental factors of intransitive verbs
Generally speaking, environmental factors are environmental stress, including abnormal house temperature, ventilation, density, light, feeding methods and equipment, as well as high temperature, low temperature, strong wind, dust and fog caused by the big environment. Environment is the condition of breeding benefit. This spring, the climate is particularly abnormal, with the temperature rising and falling, and the temperature difference between morning and evening is large, so it is difficult for farmers to master the appropriate temperature, which has increased the incidence of large-scale influenza, bursal disease and infectious diseases this year and directly brought greater economic losses to farmers. If the external environment is well managed, the source of foreign infectious diseases can be cut off and the chance of chicken disease can be reduced.