Integration of energy and protein transactions in the body to build new tools for predicting performance and body composition of ruminants

Title
Integration of energy and protein transactions in the body to build new tools for predicting performance and body composition of ruminants
Publication Date
2019
Author(s)
Oddy, V H
( author )
OrcID: https://orcid.org/0000-0003-1783-1049
Email: hoddy2@une.edu.au
UNE Id une-id:hoddy2
Dougherty, H C
( author )
OrcID: https://orcid.org/0000-0001-9918-4986
Email: hdoughe2@une.edu.au
UNE Id une-id:hdoughe2
Oltjen, J W
Type of document
Journal Article
Language
en
Entity Type
Publication
Publisher
CSIRO Publishing
Place of publication
Australia
DOI
10.1071/AN19229
UNE publication id
une:1959.11/29230
Abstract
Increased market pressure to improve meat yield and quality require improved methods of predicting body composition in growing animals. Current systems of animal nutrition based on nutrient supply and animal characteristics predict animal growth from nutrient inputs, but, as of yet, do not accurately predict body composition. The present paper explores the evidence and data required to support an existing model of the effects of energy intake on visceral and muscle protein mass and energy expenditure to predict heat production, growth and body composition of sheep. While parameters of the model related to energetic costs of protein in muscle and viscera can be supported by independent studies, parameters associated with energetic costs of protein gain, particularly in viscera, are harder to reconcile with independent measurements. The range of available data on systematic changes in visceral organ mass over time in response to feed intake is limited, which may constrain generalisation of the parameters of the model with regard to the wide range of production situations faced by the sheep and cattle industries. However, sufficient data exist in the literature to test, and if required, revise the current framework.
Link
Citation
Animal Production Science, 59(11), p. 1970-1979
ISSN
1836-5787
1836-0939
Start page
1970
End page
1979

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