Performance of Dairy Goats Fed Soybean Meal or Meat and Bone Meal with or Without Urea During Early Lactation
Title | Performance of Dairy Goats Fed Soybean Meal or Meat and Bone Meal with or Without Urea During Early Lactation |
Publication Type | Journal Article |
Year of Publication | 1990 |
Authors | Lu, CD, Potchoiba, MJ, Sahlu, T, Kawas, JR |
Journal | Journal of Dairy Science |
Volume | 73 |
Issue | 3 |
Pagination | 726 - 734 |
Date Published | Jan-03-1990 |
ISSN | 00220302 |
Abstract | Use of meat and bone meal for early lactation rations was studied. In Experiment 1, 18 Alpine goats were used in a 15-wk lactation trial. Isonitrogenous and isoenergetic diets were fed 15% CP and 2.3 Mcal/kg metabolizable energy) containing soybean meal, meat and bone meal with urea, or meat and bone meal without urea. Dry matter intake was 2.21, 2.30, and 2.34 kg/d for does fed soybean meal, meat and bone meal with urea, and meat and bone meal without urea, respectively. Milk production was 2.50, 2.67, and 2.66 kg/d in the same sequence. Rumen ammonia N (mg/dL) and total VFA (mM) were 12.9 and 81.6 for does fed soybean meal, meat and bone meal with urea, and meat and bone meal, respectively. Serum urea N was higher in does fed meat and bone meal with urea, and no differences were observed in serum total protein and plasma glucose concentrations. In Experiment 2, 4 mature, castrated male goats were used to estimate digestibilities and retention of nutrients in three diets. Digestibilities of NDF and P and retention of P were higher in goats fed the meat and bone meal diet. Allowance of absorbed protein for milk production was calculated to be 81 to 83 g/kg 4% fat-corrected milk. Meat and bone meal may be utilized efficiently by lactating does as a protein less degradable in the rumen; Ca and P source; and may be beneficial for higher milk production during early lactation. |
URL | http://linkinghub.elsevier.com/retrieve/pii/S0022030290787267 |
DOI | 10.3168/jds.S0022-0302(90)78726-7 |
Short Title | Journal of Dairy Science |