Digestive tract diseases in broilers

This is what I personally call it, because now the etiology of chicken digestive tract disease is more complicated, some people think that it is caused by bacteria, some people think that it is caused by virus, some people think that it is caused by mold, some people think that it begins from the small intestine, and some people think that it starts from the glandular stomach, and so on. So up to now, the real cause of digestive tract disease in chickens has not been understood. The digestive tract disease of chicken is not caused by a single bacteria or virus, it is the result of a comprehensive effect. There are not only breeding and management, (the most important factor), but also bacteria, viruses, and natural environment. Feeding and management is the main cause of digestive tract diseases in chickens. Poor lighting, immunity, excessive feed, hardness of particles in feed, conversion, medication and so on will lead to stress. Then, under the condition of stress, the intestinal flora of the chicken will be out of balance, causing breeding conditions for harmful bacteria, so that the feed can not be absorbed and excreted normally. Nowadays, due to vertical infection and environmental factors, bacteria and viruses harmful to the digestive tract will be infected in the body when the feeding environment is better. The common clinical symptoms of digestive tract syndrome are low food intake, poor growth in large groups, poor uniformity and weight loss. First discharge yellowish indigestible feed stool, fish intestines stool, later due to intestinal mucosal bleeding, shedding, disorderly tomato-like stool. Under the normal age temperature, the chicken will shrink its head and wilt, and the wilting rate will be significantly reduced when the temperature is increased. In the later stage of the disease, if the chickens are stressed, there will be a large number of screaming, running around, convulsions and dying of chickens. Chicken digestive tract syndrome can be divided into three diseases: 1 chicken infectious gonadal gastritis is also called proventriculus, some are caused by coronavirus, some are caused by reovirus. The main manifestations are edema of glandular stomach, thickening of gastric wall, appearance like ping-pong ball, and automatic valgus of gastric wall when opening. Glandular stomach nipple ulcer, some have annular bleeding. Some extruded glandular stomach wall will have watery liquid ejected. two。 The main manifestations of chicken myogastric gastritis are cuticular degeneration, ulcer and erosion. Severe myogastric stratum corneum was completely separated from myogastric wall. The main cause of the disease I personally think (1) may be related to some kind of bacteria or virus. (2) it is related to the excessive secretion of gastric acid. (3) it is related to bad medication habits. (4) it is related to the current feeding mode. Unlike adding sand to the feed. (5) it is related to the use of inferior fish meal and mold. 3. Chicken enterotoxic syndrome is mainly manifested in the persecution of harmful flora in the mucosal system of duodenum and small intestine, resulting in the imbalance of normal intestinal flora. Make the chicken produce a series of adverse reactions. According to the pathogenic bacteria can be divided into (1) mainly anaerobes, mainly manifested as 10-day-old chickens common, flatulence of the small intestine, smelly feces with air bubbles. (2) Streptococcus is the main manifestation, which can be seen in the serous layer at the end of the duodenum, ranging from the tip of the needle to the grain of sorghum. The longer the course of the disease, the longer it extends to the small intestine, and the larger the bleeding point is. (3) the main manifestations of coccidiosis were punctate bleeding in the mucosal layer of the small intestine, edema of the intestinal wall, severe intestinal embolism and intussusception. There are bloody stools in the cecal coccidia. (4) there are three kinds of comprehensive phenomena. Treatment experience 1. In order to cure digestive tract syndrome thoroughly, we should start from feeding management, find out the deficiency in feeding management, and reduce intestinal stress. This is the most important point. The size of corn ballast particles with concentrated material and the intensity of sunlight are critical. two。 To find the pathogen accurately, the medication should be consistent with the pathogen. 3. Early detection and early treatment, in addition, the disease is easy to produce drug resistance. When taking drugs, two or more drugs should be used alternately. 4. During the treatment, the effect of the combination of Chinese and Western medicine is better, and some microbial preparations of Lactobacillus and Bacillus should be used appropriately. Appropriate amount of compound amino acids and vitamins should be supplemented. 5. Digestive tract syndrome should consider the occurrence of secondary disease and be controlled in time.