Hwever, the content of nitric oxide(NO) in blood of mongolia sheep and dorset sheep in autumn was higher than those of mongolia sheep and dorset sheep in spring(P?0.05).

• 无角多塞特羊血清中T-SOD、TAC的活性春季和秋季与蒙古羊同季节相比差异均不显著；但秋季T-SOD、TAC的活性显著性低于春季(P?0.；05)。 随着绵羊体内消化道线虫的数量的增多；引起?