Habib M R, Rashid M H, Islam M A, Majumder S, Islam K M S, Ahmed S, Alam M S, Vargas-Bello-Pérez E
Department of Dairy Science, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.
Department of Agricultural Statistics, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.
Trop Anim Health Prod. 2018 Apr;50(4):889-895. doi: 10.1007/s11250-018-1514-x. Epub 2018 Jan 26.
The objective of this study was to monitor the changes in growth, dry matter intake, and blood profiles (nutrition and reproductive hormones) of dairy heifers in response to green grass-based diets. Twelve crossbred heifers were equally divided into group 1: rice straw and concentrate; group 2: rice straw, green grass, and concentrate; group 3: green grass and concentrate; group 4: green grass, soybean hay, and concentrate. Dry matter intake in group 4 was found 6% higher (P < 0.05) than group 1. Negative body weight gain was found in group 1 and group 2 showed 14% higher body weight gain per 30 days compared to groups 3 and 4 (P < 0.05). Heifers in group 4 had significantly (P < 0.05) higher heart girth gain, serum albumin, urea, and blood urea nitrogen than the heifers in other groups. Endocrine parameters were found similar among groups. Overall, supply of green grass especially a mix of leguminous and non-leguminous was found advantageous in heifer feeding.
本研究的目的是监测奶牛小母牛在以青草为基础的日粮喂养下生长、干物质摄入量和血液指标（营养和生殖激素）的变化。12头杂交小母牛被平均分为4组：第1组：稻草和精饲料；第2组：稻草、青草和精饲料；第3组：青草和精饲料；第4组：青草、大豆干草和精饲料。结果发现，第4组的干物质摄入量比第1组高6%（P < 0.05）。第1组出现体重负增长，与第3组和第4组相比，第2组每30天的体重增长高出14%（P < 0.05）。第4组的小母牛心脏周长增加量、血清白蛋白、尿素和血尿素氮显著高于其他组（P < 0.05）。各内分泌参数在组间相似。总体而言，发现青草尤其是豆科和非豆科混合青草的供应对小母牛饲养有利。
