The effect of varying levels of coconut oil on intake, digestibility and methane output from continental cross beef heifers
| Autor: | J.J. Callan, D. K. Lovett, E.R. Jordan, Frank P. O'Mara, M. Hawkins |
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| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Animal Science. 82:859-865 |
| ISSN: | 1748-748X 1357-7298 |
| Popis: | This experiment sought to establish the response to increasing levels of coconut oil (CO) supplementation with a fixed 0·50:0·50 forage:concentrate diet on intake, digestibility and methane (CH4) emissions. Sixteen continental cross beef heifers (mean starting weight 481±36 kg) were assigned randomly to one of four levels of CO; 0 g/day, 125 g/day, 250 g/day or 375 g/day in an incomplete (three periods) multiple (no. =4) Latin-square design experiment (no. =12 per treatment). A linear reduction in CH4 output occurred as the level of CO in the diet increased ( PP 4 output was greater than the proportional reduction in DMI and hence CH4 l/kg DMI decreased from 39·8 l/kg when no CO was given to 29·7 l/kg when 375 g/day CO was given. The addition of CO to the diet resulted in a significant decline in dry-matter digestibility (DMD) at the 375 g/day level (P4 production with no adverse effect on DMI or DMD up to the 250 g/day level (0·027 of dietary DM). |
| Databáze: | OpenAIRE |
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