The study aims at determining the apparent digestibility energy and amino acid in Yorkshire pig at different stages such as gilt, pregnant sow, lactating sow, young boar and working boar.

Ngoc Tan Nguyen, , Neng-Wen Lo, , Sing-Ping Chuang, Ya-Lan Jian, and Jyh-Cherng Ju

Depar tment of Animal Science, National Chung Hsing University, 250 Kuok uang Road, Taichung 402, Taiwan, ROC,

Agricultural Biotechnology Center, Inst itute of Agricultural Sciences for Southern Vietnam, 121 Nguyen Binh Khiem

Nanjing Agricultural University

Supervised by Professor Wan Jianmin

Rice (Oryza sativa L.) is the staple food for more than 50% of the world’s population，although insect pests are the major biotic constraints to production of this crop.

hai.ph@iasvn.org  

Cassava is considered as the 3^rd rank of food crops in Vietnam. The total cultivated area and productivity of cassava have significantly increased up to now. Fresh cassava root production roughly obtained 9 million tones annually. Average cassava productivity gained 16 t /ha including  3.36 t of its root peels (RPs) as its by-products.