Supplementing Maize or Soybean Hulls to Cattle Fed Rice Straw: Intake, Apparent Digestion, In situ Disappearance and Ruminal Dynamics

Autor: Brian J. Rude, David G. St. Louis, Nguyen Tien Von, Adam I. Orr
Rok vydání: 2008
Předmět:
Zdroj: Asian-Australasian Journal of Animal Sciences. 21:807-817
ISSN: 1976-5517
1011-2367
DOI: 10.5713/ajas.2008.70518
Popis: Steers with ad libitum access to rice straw were assigned to four diets to evaluate the effects of maize or soybean hull supplementation on intake, in vivo digestibility, ruminal pH, VFA, ammonia-nitrogen (NH 3 -N) and in situ ruminal disappearance of feed nutrients by cattle consuming rice straw. Supplement treatments were: no supplement (RS); soybean meal at 0.127% BW (SBM); cracked maize at 0.415% BW plus 0.044% BW soybean meal (MAIZE); or soybean hulls at 0.415% BW plus 0.044% BW soybean meal (HULLS). The MAIZE and HULLS diets were formulated to provide approximately 4 MJ of NE m per kg of diet. Rice straw DMI was not affected (p = 0.34) by supplement. Apparent dry matter (DM) digestibility was greater (p
Databáze: OpenAIRE