Studies on the Inflnences of Niacin on Physiological Parameters and Milk Production of Hoistin Cows II.Effect of Niacin Supplementation on Energy Stress and Ketosis of Dairy Cows in Early Lactation
Studies on the Inflnences of Niacin on Physiological Parameters and Milk Production of Hoistin Cows II.Effect of Niacin Supplementation on Energy Stress and Ketosis of Dairy Cows in Early Lactation
饲料中添加烟酸对奶牛生理参数及生产性能影响的研究 Ⅱ、对泌乳早期能量应激及酮病的影响