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679彩票平台-679彩票下载苹果版-679彩票计划网

Publish Date:2014-5-9
679彩票平台-679彩票下载苹果版-679彩票计划网 symptoms mainly into the following three points:
1. Disease of chicken knee joint swell, flat tibial distal portion and tarsal outward side bends, finally gastrocnemius tendon from the normal position of the original, so sick chicken leg bent or twisted and outward extension, compared with normal bone is short and thick, unable to support the body, so as not to standing. Sometimes the disease spread to the entire leg. Leg lesions of the disease is difficult to often can not step feeding and starvation.
2. Chicken cartilage disorders, head forms a ball shape, short legs and thick, wings became shorter, protruding abdomen, embryoid body edema. The chick hatched chicks even, often show nervous performance obstacles, bones become shorter, and the occurrence of a congenital chronic ataxic chicks phenomenon, gradually grew up, the disorder is not very clear, but does not completely disappear, ataxia, hen and its offspring, such as manganese content in feed properly, then this phenomenon can disappear.
3. Mn deficiency in laying hens, egg production will decrease, the egg shell is thinner, the hatching rate decreased, chick embryo dysplasia, chicks were killed at will when a shell, and a high ratio of dead embryos.
 
 
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