2Paya Hamid, Taghizadeh Akbar, Janmohammadi Hossein. Nutrient Digestibility and Gas Production of Some Tropical Feeds Used in Ruminant Diets Estimated by the in vivo and in vitro Gas Produc- tion Techniques [J]. American Journal of Animal and Veterinary Sciences, 2007, 2 (4): 108-113.
3S A Khanum, T Yaqoob, S Sadaf, et al. Jabbar. Nutritional evaluation of various feedstuffs for |ivestock production using in vitro gas method [J]. Pakistan Vet J, 2007, 27(3): 129-133.
7Webster A J F, R.J.Dewhurst, C.J.Waters. Ahemative Approaches to the Characterization of Fcedstuffs for Ruminants in Recent Ad- vances in Animal Nutrition, 1988:167.