Author/Authors :
Aung, Min Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Min Thein, Soe Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Chueslis Phaw, Naw Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Htike Phyo, Than Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Paing Phyo, Yan Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Ye Phyo, Naing Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Van Bik, Lesley Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Bo Bo, Aung Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Maw, Hset Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Myint Maw, Aung Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Yu Maw, Say Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Pa Pa Moe, Phyo Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Soe Lwin, Dezin Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Sandar Myint, Khin Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , Kyawt, Yin Yin Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar , San Mu, Khin Department of Animal Nutrition - University of Veterinary, Yezin, Nay Pyi Taw, Myanmar
Abstract :
This experiment was conducted to evaluate the in vitro fermentation parameters of grass based diet
supplemented with two different tree legume forages in ruminants. The grass [Mulato II (M)] was mixed with
legume forages [Gliricidia(G) and Sesbaenia (S)] to obtain the feed mixtures, M70%+G30%, M70%+S30% and
M70%+G15%+S15%, and then carried out the in vitro gas production. The lower (p<0.05) crude protein and higher
(p<0.05) fibre (neutral detergent fibre and acid detergent fibre) contents were observed in Mulato II compared with
legume forages, and M70+G30 had the highest (p<0.05) fibre content among the feed mixtures. The significant differences
(p<0.05) in gas productions were observed in early incubation times (1, 6 and 12h). The higher fermentation parameters
were found in Gliricidia. For the feed mixtures, no significant differences (p>0.05) in gas production and fermentation
kinetics were observed. The nutritive values such as metabolizable energy, organic matter digestibility, short chain
fatty acid, total digestible nutrient and digestible dry matter were higher (p<0.05) in Sesbaenia than other feedstuffs.
The dry matter intake of M70+S30 was significantly higher (p<0.05) than that of M70+G30 and M70+G15+S15.
However, all feedstuffs and feed mixtures possessed the nutritive values of high quality forages and complete feeds for
ruminants. The highest (p<0.05) methane concentration was observed in Sesbaenia, followed by Gliricidia and Mulato
II. For the feed mixtures, M70+G15+S15 showed the higher (p<0.05) methane gas concentration than M70+G30 and
M70+S30. The negative correlation (R2
=0.9252) between NDF content and methane gas concentration of feedstuffs
was observed. Thus, grass and legume forage mixtures have potential to use as complete feed for ruminant without
using concentrates because of their higher nutritive values. In consideration with environmental issue, M70+G15+S15
feed mixture should not be used as ruminant feed because of its higher concentration of methane.
