Jinding duck
Originated in Longhai, Tongan, Nanan, Jinjiang and other counties and cities in Fujian Province, it is one of the high-yield breeds of egg duck in China.
Jinding duck has a long body, with red-brown forebody, gray-brown back, dark markings on the belly, dark brown wing feathers and dark brown tail feathers. The mother duck has a thin and compact body and a plump belly. The whole body feathers are reddish brown sparrow feathers and mirror feathers. Beak yellowish green, shank web orange, iridescent brown. The adult male duck weighs 1.76 kg. The mother duck weighs 1.78 kilograms. The female duck begins to lay at the age of 120 days and lays 280 eggs a year. Under the condition of house feeding, it can lay 300 eggs a year and weigh 72 grams. The eggshell is mainly cyan, accounting for more than 95%. The male-female ratio is 1:25, the fertilization rate is 90%, and the hatching rate is 85% Mel 92%.
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Prevention and treatment of abomasum obstruction in sheep
Abomasum obstruction in sheep, also known as abomasum accumulation, is mainly caused by vagus nerve regulation disorder, abomasum content accumulation, gastric wall dilatation, volume enlargement, obstruction, and secondary valvular secret knot. Serious pathological processes that cause extreme disorders of digestive function, rumen effusion, autologous poisoning and dehydration, often leading to death. The expert relieves the disease. Etiology of ⑴: mainly due to improper feeding management and feed changes; some are due to digestive and metabolic disorders; also seen in vagus nerve regulatory disorders
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Characteristics of Nutrition and Metabolic Diseases in Chicken
1. The incidence is slow, the incidence is high, the course of disease is long, and most cases have a long-term recessive process. 2. generally, the body temperature is low or in the normal range, there is no contact infection between chickens, and most of the diseased chickens have diversified clinical symptoms such as growth arrest, anemia, digestive and reproductive dysfunction and so on. 3. Early diagnosis is difficult, but this kind of disease has characteristic changes of biochemical indexes of blood or urine or pathological changes of organs and tissues. Through the examination and analysis of feed or soil and water quality, the cause can be identified.
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