New Dimensions and Challenges for Sustainable Livestock Farming: Proceedings of the 11th Animal Science Congress: Kuala Lumpur (Malaysia), 5-9 Sept, 2004, p. 640-642
Proceedings of the 25th Malaysian Society of Animal production Annual Conference: Natural Products and Nutraceuticals in Animal Production: Melaka (Malaysia), 1-3 August 2003, p. 52-53