Investigations of some parameters of natural immunity in meat turkeys reared outdoors

The progression of some parameters of natural immunity in meat turkey reared outdoors was investigated. The levels of the haemolytic complement were lower than those obtained in commercial turkeys and in turkeys reared in a controlled environment during one of our previous investigations. The weather conditions could have influenced the trend of the haemolytic complement in turkeys selected for high meat production and kept outside, underlining the possible importance of the rearing system.