Understanding Feed Efficiency in Sheep

Umair Hassan Khan

doi:10.26182/gwb5-yw02

Understanding Feed Efficiency in Sheep

Umair Hassan Khan

Research output: Thesis › Doctoral Thesis

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Abstract

The work in this thesis tested the general hypothesis that feed-efficient sheep, as determined by their residual feed intake(RFI), will exchange less gas, produce less heat, and retain more energy by depositing more fat, because they have fewer mitochondria in visceral tissues. To address these hypotheses, the studies in this thesis explored phenotypes and methodologies to provide a better understanding of variation among individual animals, and also evaluated the effect of diet quality on RFI. Overall, this study not only provided an overview of individual animal variation by linking the experimental findings with animal efficiency but also highlighted the influence of quality of diet on energy expenditure and efficiency of energy utilization.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Vercoe, Phil, Supervisor Oddy, V. Hutton, Supervisor, External person Bond, Jude, Supervisor, External person Dalrymple, Brian, Supervisor Martin, Graeme, Supervisor
Award date	7 Oct 2022
DOIs	https://doi.org/10.26182/gwb5-yw02
Publication status	Unpublished - 2022

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10.26182/gwb5-yw02

THESIS - DOCTOR OF PHILOSOPHY - KHAN, Umair Hassan - 2022
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AB - The work in this thesis tested the general hypothesis that feed-efficient sheep, as determined by their residual feed intake(RFI), will exchange less gas, produce less heat, and retain more energy by depositing more fat, because they have fewer mitochondria in visceral tissues. To address these hypotheses, the studies in this thesis explored phenotypes and methodologies to provide a better understanding of variation among individual animals, and also evaluated the effect of diet quality on RFI. Overall, this study not only provided an overview of individual animal variation by linking the experimental findings with animal efficiency but also highlighted the influence of quality of diet on energy expenditure and efficiency of energy utilization.

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Understanding Feed Efficiency in Sheep

Abstract

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