Effect of forage/concentrate ratio and dietary coconut oil level on methane output and performance of finishing beef heifers

Autor: L. Stack, M. Finlay, J.J. Callan, S. Lovell, Frank P. O'Mara, D. K. Lovett, J. Conolly
Rok vydání: 2003
Předmět:
Zdroj: Livestock Production Science. 84:135-146
ISSN: 0301-6226
Popis: Intake, animal performance and methane (CH4) output was investigated using 36 finishing Charolais cross heifers (mean starting weight 462 kg, S.D.±16) fed ad libitum over an 11-week period. Six dietary treatments were investigated in a randomised block design experiment with a factorial arrangement of treatments. The six experimental diets consisted of three forage/concentrate (F/C) ratios (0.65:0.35, 0.40:0.60 and 0.10:0.90) supplemented with two levels of coconut oil (0 or 350 g/day). Rumen protozoa numbers were significantly (P 0.05) interaction between the F/C ratio and coconut oil level was identified although coconut oil significantly reduced dry matter intake (DMI), CH4 l/day and LWG on the 0.65:0.35 F/C ratio diet.
Databáze: OpenAIRE