INSTITUTE OF BIOSCIENCE

Laboratory of Enzyme and Microbial Technology

 

Prof. Dr. Ho Yin Wan
Insitute of Bioscience
03-8947 2161
ywho@ibs.upm.edu.my
Current Research Interests:
 
* Improved utilisation of feed through understanding rumen   ecology and metabolism 
* Studies on the production of Lactobacillus as a probiotic in reducing fat and cholesterol in chicken
* Effect of Lactobacillus culture, use as probiotics, on intestinal and systemic immunity of chickens
* Effect of Lactobacillus as a probiotic on layers and egg quality       
* Up-scaling of mixed Lactobacillus culture used as a probiotic for chicken 
* Development of rapid identification for Ganoderma boninense pathogenic to oil palm 
* Enhancing utilisation of phytate compounds of feeds by microbial phytase in chicken.
 
Selected Publications:
                                                                           2005 - 2006
         
Sieo, C. C., Abdullah, N., Tan, W. S. and Ho, Y. W. (2005). Influence of ß-glucanase-producing Lactobacillus strains on intestinal characteristics and passage rate of broiler chickens. Poultry Science 84:734-741 
Sieo, C. C., Abdullah, N., Tan, W. S. and Ho, Y. W. (2005). Effects of ß-glucanase- producing Lactobacillus strains on growth performance, apparent digestibilities of dry matter, crude protein and apparent metabolisable energy in broiler chickens. British Poultry Science. 46: 333-339. 
Liew, S. L., Ariff, A. B., Raha, A. R. and Ho, Y. W. (2005). Optimization of medium composition for the production of a probiotic microorganism, Lactobacillus rhamnosus, using response surface methodology. International Journal of Food Microbiology. 102: 137-142 
Latiffah , Z., Tan, S. G., Abdullah, F., Harikrishna, K. and Ho, Y. W. (2005). Random amplified polymorphic DNA (RAPD) and random amplified microsatellite (RAMS) of  Ganoderma from infected oil palm and coconut stumps in Malaysia. Asia Pacific Journal of  Molecular Biology and  Biotechnology. 13: 23-34 
Kalavathy, R., Abdullah, N., Jalaludin, S. and Ho. Y. W. (2005). Effects of Lactobacillus cultures on performance and egg quality during the early laying period of hens. Journal of  Animal Feed and Sciences. 14: 537-547. 

Sieo, C. C., Abdullah, N., Tan, W. S. and Ho, Y. W. (2005). Plasmid profiling and curing of Lactobacillus strains isolated from
gastrointestinal tract of chicken. Journal of Microbiolology. 43: 251-256. 

Kalavathy, R., Abdullah, N., Jalaludin, S. and Ho, Y. W. (2006). Effects of  Lactobacillus cultures on cholesterol, fat content and fatty acid composition of the liver, muscle and carcass of broiler chickens. Animal Research. 55: 77-82.

Sieo, C. C., Abdullah, N., Tan, W. S. and Ho, Y. W.(2006). In vivo study on the persistence of transformed b-glucanase-producing Lactobacillus strains in gastrointestinal tract of chickens. Journal of Animal Feed and Sciences. 15: 261-274. 
Sieo, C. C., Abdullah, N., Tan, W. S. and Ho, Y. W. (2006). Optimization of electrotransformation conditions to improve genetic engineering potential of Lactobacillus spp. isolated from gastrointestinal tract of chickens. Biotechnology.   5: 244 - 251.