TY - JOUR T1 - Protein Requirements for Maintenance of Thai Native Male Cattle Fed Rice Straw Based Diets AU - Paengkoum, Pramote JO - Journal of Animal and Veterinary Advances VL - 9 IS - 11 SP - 1630 EP - 1632 PY - 2010 DA - 2001/08/19 SN - 1680-5593 DO - javaa.2010.1630.1632 UR - https://makhillpublications.co/view-article.php?doi=javaa.2010.1630.1632 KW - Protein KW -Thai native cattle KW -average daily gain KW -maintenance KW -metabolizable KW -energy KW -Thailand AB - The objective of this study was to determine the protein requirement for the maintenance of male Thai native cattle. About 18 cattle with body weight of 125±4.9 kg were arranged in a randomized complete block design with 6 replications (block) and 4 treatments. Cattle were fed with dietary Crude Protein (CP) levels of 5.0, 8.0 and 11.0% CP with similar amounts of metabolizable energy. Dry matter, organic matter, crude protein and neutral detergent fiber digestibility increased (p<0.05) with increasing levels of CP. Moreover, Nitrogen (N) intake, N absorption and N retention increased (p<0.05) with increasing levels of CP. Prediction equation CP intake (g CP kg-1 BW0.75) with relation to average daily gain (ADG, g kg-1 BW0.75) was CP intake = 0.409 ADG + 4.22 (R2 = 0.883, SE = 0.624, p<0.01, n = 18). From these equations, it can be explained that the CP requirement for the maintenance of male Thai native cattle is 4.22 gCP kg-1 BW0.75. ER -