By Grohn, Y. T. and Rajala-Schultz, P. J., Suomen Elainlaakarilehti, 2000
Description
Risk factors associated with culling in 39thin727 Finnish Ayrshire cows, in 1993, were assessed. The main reasons for culling were mastitis, teat injuries, and lameness, followed by fertility disorders and ketosis. Ovarian cysts and anoestrus had a protective effect against culling, immediately after diagnosis and treatment. The earlier a farmer knew a cow was pregnant the lower was the risk of culling. Increasing milk yield had a protective effect. The risk of culling increased as the cow aged, and cows that calved in the autumn had the lowest risk of being culled
Risk factors associated with culling in 39thin727 Finnish Ayrshire cows, in 1993, were assessed. The main reasons for culling were mastitis, teat injuries, and lameness, followed by fertility disorders and ketosis. Ovarian cysts and anoestrus had a protective effect against culling, immediately after diagnosis and treatment. The earlier a farmer knew a cow was pregnant the lower was the risk of culling. Increasing milk yield had a protective effect. The risk of culling increased as the cow aged, and cows that calved in the autumn had the lowest risk of being culled
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