Pig feed; green forages; nutritive values; in vitro digestibility
Abstract :
[en] The study was conducted (2010 to 2011) to assess the current use and nutritive value of green
forages commonly used for pig in Northern Vietnam. The current use of forages was surveyed in Hai Duong, Phu Tho and Hoa Binh. Nutritive values were classified at laboratory of Animal Nutrition Department (University of Liège - Gembloux, Belgium). Results showed the most common forages were sweet potatoes (98.89%), taro (58.89%) and banana (64.45%). They were mostly used as fiber supplement; some were used for diarrhea and anti-constipation treatment or for increasing milk production. Nutritional value varied from 2.76% to 25.30% (CP); 10.17% to 44.27% (NDF); 3232.92 to 4225.75 Kcal (GE); and 3.69% to 20.00% (ash). In vitro digestibility ranged from 36.71% to 85.44% for DM; 45.18% to 92.55% for CP; and 38.71% to 73.43% for GE. In vitro digestibility of banana fruit was higher than banana stem and flower. In vitro digestibility of DM, CP and GE of green banana fruit were 44.04%, 70.36% and 44.90%, lower than semi-ripe(81.43%, 75.65% and 55.52%), and ripe banana (85.44%, 78.60% and 54.04%), respectively. With high protein content, banana flower, broussonetia
papyrifera leaf, taros and cabbage can be used as a good feed of swine.
