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 |
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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 |
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