Diagnosis and Treatment of Water Sample Feces at the Initial Stage of Chicken Egg Production
In recent years, in some medium-sized and small-scale chicken farms, the symptoms of watery feces have appeared at the early stage of egg production. There has been no change in the color of feces, but the water content has increased. The chickens were in good spirits, eating normally, drinking water increased, and egg production rate rose slowly. In the absence of secondary infection, chickens have almost no casualties and are generally not likely to cause farmers' attention. However, pulling out water samples for a long time causes the body's resistance to weaken, which can easily lead to other diseases and have a great impact on production performance. As a result, the peak of egg production does not go up, causing varying degrees of losses to the chicken industry.
1, the characteristics of the disease
The age of onset is generally between 120 and 150 days of age, and when laying hens start production, the egg production rate starts around 5%. The short course is about 15 days and the longest is 60 days. The main clinical symptoms are: little change in feed intake, increased drinking water, chicken thirst, high fecal moisture content, non-formation, slow egg production rate, fair chicken spirit, and individual chicken spirit Depressed, loose feathers. Pulling water-like excrement lasts for a long time, often with other diseases, causing chickens to lose their lives. As the rate of egg production rises, the symptoms of pulling watery stools have eased.
2, clinical investigation
In the chicken farm where the disease occurred, when the eggs were first seen around the age of 120 days, in order to allow the chickens to reach the peak of production as soon as possible, there was no transitional feed for young chickens to laying hens. No anti-stress measures have been taken, and the feed formula for laying hens has rarely changed.
3, pathological anatomy and laboratory tests
The diseased live chickens were dissected, the cloacal cavity was congested, the kidneys were swollen with hyperemia, and some chicken kidneys also had urate deposition. The blood, liver, and spleen tissues of the diseased chickens were smeared, stained, and microscopically examined for no bacteria. Aseptically, the above-mentioned diseases were inoculated on ordinary broth culture medium and MacConkey culture medium, incubated at 37° C. for 24 hours, and no bacterial growth was observed. The feed inspection contained 0.3% salt, and the water quality inspection complied with drinking water standards.
4, cause analysis
(1) Egg laying is a stressful process from egg production to egg production. The body undergoes a series of physiological changes. The secretion of various glands in the intestine increases, and the peristalsis of the intestines accelerates, so that the feces is like a water sample.
(2) The eagerness of the chicken farmer, the premature use of layer chickens for the peak feed, the nutritional level is relatively high, exceeds the body's needs, increases the burden on the body, and the metabolism of large amounts of protein and calcium, the formation of urate from the kidneys Excretion, when the kidneys will relieve renal urate deposition by accelerating the excretion of water. The watery stool that occurs at this time is actually the excretion of urine accumulated in the cloaca and the feces.
5, diagnosis and treatment measures
Epidemiological investigations, clinical symptoms, pathological changes and laboratory tests can confirm the diagnosis.
Prevention and control measures: 1 Improve the quality of chicks and broilers, meet the requirements of breeds, so that the chickens can be put into production normally; 2 Use reasonable amount of transition materials for open chickens, and must not directly use high-yield materials; 3 Add 0.1% of feeds when just starting production Oxytetracycline, anti-stress and anti-inflammatory, prevention of intestinal infections such as E. coli, Salmonella. 4 to the incidence of chickens to reduce feed nutrition, especially the amount of calcium and protein, and put in the feed 0.2% sodium bicarbonate, drinking water, add 0.1% of vitamin C, continuous taking 7 to 14 days, with good results .
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