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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2008 > Volume 7 Number 7 > E. Erwan1,2, A.R. Alimon2*, A.Q. Sazili3,4 and H. Yaakub3

Effect of Varying Levels of Leucine and Energy on Performance and Carcass Characteristics of Broiler Chickens

E. Erwan1,2, A.R. Alimon2*, A.Q. Sazili3,4 and H. Yaakub3
1Department of Animal Science, State Islamic University of Sultan Syarif Kasim, Riau, Indonesia 2Institute Tropical Agriculture, Universiti Putra Malaysia, Selangor, Malaysia 3Department of Animal Science, Faculty of Agriculture, University Putra Malaysia, Malaysia 4Halal Product Research Institute, University Putra Malaysia, Malaysia
Abstract :

The experiment was conducted to evaluate the influence of excess leucine, in broiler diets containing varying levels of energy. In a 2 x 2 factorial arrangement, the effects of leucine levels and dietary energy on performance and carcass characteristics of Cobb broiler chickens from 3 to 6 weeks of age were tested. Dietary treatments consisted of two levels of leucine i.e. 0 and 0.5% with two of metabolizable energy (ME) i.e. 3200 and 3000 kcal/kg, respectively. Reducing dietary energy decreased weight gain up to 7.4% (P<0.05). Decreasing dietary energy had no significant effect on feed consumption and feed to gain ratio and carcass characteristics. Increasing dietary leucine had no significant effect on feed consumption, weight gain and feed to gain ratio and carcass characteristics, but significantly increased carcass weight up to 9% (P<0.05). Dietary treatments had no significantly effect on mortality. Further research is needed to evaluate the potential impact of excess leucine in diets with reduced levels of crude protein.

Keywords :
Leucine, broiler diets, dietary energy, crude protein

Date Deposited : 12 Jul 2011 13:02

Last Modified : 12 Jul 2011 13:02

Official URL: http://www.pjbs.org/ijps/ijps.htm

Volume 7, Number 7, - 2008 , ISSN 1682-8356

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