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Nutritional considerations concerning threonine in broilers1,2

Published online by Cambridge University Press:  18 September 2007

M. T Kidd
Affiliation:
Mississippi State University, Department of Poultry Science, Box 9665, Mississippi State, Mississippi 39762–9665, USA
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Abstract

An important objective of the least cost formulation of broiler diets is to provide sufficient amounts of the most limiting amino acids to support the needs of tissue maintenance and accretion while minimising any excesses. Threonine is the third most limiting amino acid in broiler diets behind the total sulphur-containing amino acids and lysine. Research into the threonine requirement of broilers is sparse compared with that of methionine and lysine. However, recent work on the threonine needs of growing and finishing broilers has been invaluable in helping commercial nutritionists determine the minimum amount of threonine required in least cost diet formulations. This review summarises this recent research. It also considers threonine needs for optimal immune system functions, feather growth, glycine requirements and gastrointestinal functions, as well as under conditions causing heat stress.

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Type
Research Article
Copyright
Copyright © Cambridge University Press 2000

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