The Effects of Feeding Varying Amounts of Gossypol from Whole Cottonseed and Cottonseed Meal in Lactating Dairy Cows

摘要

Effects of feeding varying amounts of total gossypol from whole cottonseed and cottonseed meal were evalu - ated in 30 lactating Holstein cows. After a 14-d pretreat - ment period, cows were assigned for 42 d to one of five treatments: control (diet A); 1040 mg/kg of total gossypol, and 989 mg/kg of free gossypol from whole cottonseed (diet B); 900 mg/kg of total gossypol and 64 mg/kg of free gossypol from cottonseed meal (diet C); 960 mg/kg of total gossypol and 531 mg/kg of free gossy - pol with equal amounts of total gossypol from whole cottonseed and cottonseed meal (diet D); or 1922 mg / kg of total gossypol and 1050 mg/kg of free gossypol with equal amounts of total gossypol from whole cotton - seed and cottonseed meal (diet E).