Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/18214
Title: Methane production in cattle selected for residual feed intake
Contributor(s): Hegarty, Roger  (author); Herd, Robert M  (author)orcid ; Woodgate, R (author)
Publication Date: 2007
Handle Link: https://hdl.handle.net/1959.11/18214
Abstract: Methane produced by microbes within the digestive tract of ruminants constitutes a significant greenhouse gas emission and a substantial loss of fermented dietary energy from the host animal. Selection of cattle for improved residual feed intake (RFI) reduces feed intake and can be expected to result in reduced production of enteric methane. This study was conducted to test the relationship between RFI and methane production in bulls consuming a feedlot finishing diet. Lower estimated breeding values for RFI were associated with lower feed intake by bulls and there was a weak positive association between feed intake and enteric methane production rate (MPR; P = 0.05). However no relationship between MPR and RFI was apparent when data were analysed using regression analysis, or when the MPR of bulls with the highest (n = 15) and lowest (n = 15) RFIs were compared. It is concluded that although cattle with superior RFI can be expected to have a lower MPR because of a reduction in feed intake, more accurate ways of measuring MPR, and preferably simultaneous measurement of RFI and MPR, are required to accurately define the correlation between RFI and MPR.
Publication Type: Conference Publication
Conference Name: Recent Advances in Animal Nutrition in Australia Biennial Conference, Armidale, Australia, 9th - 11th July, 2007
Conference Details: Recent Advances in Animal Nutrition in Australia Biennial Conference, Armidale, Australia, 9th - 11th July, 2007
Source of Publication: Recent Advances in Animal Nutrition in Australia, v.16, p. 71-76
Publisher: University of New England
Place of Publication: Armidale, Australia
ISSN: 0819-4823
Field of Research (FOR): 070204 Animal Nutrition
Socio-Economic Outcome Codes: 830310 Sheep - Meat
Peer Reviewed: Yes
HERDC Category Description: E1 Refereed Scholarly Conference Publication
Series Name: Recent Advances in Animal Nutrition in Australia
Series Number : 16
Statistics to Oct 2018: Visitors: 93
Views: 95
Downloads: 0
Appears in Collections:Conference Publication

Files in This Item:
3 files
File Description SizeFormat 
Show full item record

Page view(s)

110
checked on May 2, 2019
Google Media

Google ScholarTM

Check


Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.