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. 131-132
Proceedings of the 23rd Malaysian Society of Animal Production Annual Conference: Globalisation and livestock production in developing nations: Langkawi, Kedah (Malaysia), 27-29 May 2001, p. 96-97