Models for estimating feed intake in small ruminants
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چکیده
منابع مشابه
Invited Review Models for estimating feed intake in small ruminants
This review deals with the most relevant limits and developments of the modeling of intake of sheep and goats reared intensively and extensively. Because small ruminants are normally fed ad libitum, voluntary feed intake is crucial in feeding tactics and strategies aimed at optimal animal production. The effects of genetic, neuroendocrine, hormonal, feed and environmental factors on voluntary f...
متن کاملSome Animal and Feed Factors Affecting Feed Intake, Behaviour and Performance of Small Ruminants
Do Thi Thanh Van, 2006. Some animal and feed factors affecting feed intake, behaviour and performance of small ruminants. Doctor’s dissertation. ISSN 1652-6880, ISBN 91-576-7081-1 The overall objective of this thesis was to assess the effect of some animal and feed factors on feed intake, behaviour and performance of small ruminants. The experiments were carried out at the Goat and Rabbit Resea...
متن کاملMechanisms controlling feed intake in ruminants: a review.
The purpose of this paper is to review our understanding of the involvement of central and peripheral factors in the control of feed intake in ruminants. The regulation of body weight under various states of energy need depends on an animal's ability to control feed intake to meet these needs. In the central nervous system (CNS), the ventromedial and lateral hypothalamus appear to be the areas ...
متن کاملEfficiency of energy utilisation and voluntary feed intake in ruminants.
Energy requirements of animals are most readily expressed in terms of net energy (NE), while the energy yield of feed is, at least initially, expressed in terms of metabolisable energy (ME). Energy evaluation systems 'translate' NE requirements into ME requirements (ME systems) or assign NE values to feeds (NE systems). Efficiency of ME utilisation is higher for maintenance than for production ...
متن کاملThe effect of nutrients on feed intake in ruminants.
The purpose of the present review is to examine the role played by nutrients in controlling feed intake in ruminants, in light of their particular anatomical, physiological, nutritional and behavioural characteristics. The ration is first digested in the rumen for several hours by microbial fermentation. Volatile fatty acids, which constitute 50-75% of a ruminant's energy supply, considerably d...
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ژورنال
عنوان ژورنال: Revista Brasileira de Zootecnia
سال: 2013
ISSN: 1516-3598
DOI: 10.1590/s1516-35982013000900010