Lu D X. The combined effect of feed[M]. Beijing: China Agricultural Press, 2000: 289-294.
[3]
Liu J X, Dai X M, Han Y G, et al. The research of increasing the value of straw by ammoniating processing(second)—the effect of feeding Hu sheep by the straw ammoniated with bicarbonate[J]. Zhejiang Journal Animal Science and Veterinary Medicine, 1990, 15(3): 2-4.
[4]
Tan Z L. Effects of different proportions of dietary carbohydrates on the ruminal environmental parameters for sheep ded a wheat straw based died[J]. Acta Zoonutrimenta Sinica, 2000, 12(1): 42-47.
[5]
Wang J Q, Feng Y L. Studies on the synthetic efficiencies of rumen microbial protein from various sources of fermentable carbohydrates and degradable nitrogens[J]. Acta Veterinaria et Zoorechnica Sinica, 1996, 27(2): 97-104.
[6]
Meng Q X, Xiong Q. Radiation treatment to improve the nutritional value of straw[J]. Feed Industry, 1991, 12(1): 13-14.
[7]
Bodine T N, PurvisⅡH T. Effects of supplemental energy and/or degradable intake protein on performance, grazing behavior, intake, digestibility, fecal and blood indices by beef steers grazed on dormant native tallgrass Prairie[J]. Journal of Animal Science, 2003, 81: 304-317.
[8]
Sun L N, Li H, Gao X J, et al. Improve crude fiber digestibility of ruminant with nutritional control measures[J]. Feed Review. 2011, 9: 23-26.
[9]
Chen W J. Effects of protein and energy balance on associative effeets of feedstuffs in ruminants[D]. Hangzhou: Zhejiang University, 2008: 35-44.
[10]
Chen W J, Wang Y, Duan Z Y, et al. The measurements and methods for evaluation of associative effects in ruminants[J]. China Cattle Science, 2011, 37(2): 61-65.
[11]
Menke K H, Raab L, Salewski A, et al. The estimation of the digestibility and metabolisable energy content of ruminant and starch digestion[J]. Small Ruminant Research, 1979, 93: 217-222.
[12]
Menke K H, Steingass H. Estimation of the energetic feed value obtained from chemical analysis and in vitrogas production using rumen fluid[J]. Animal Research and Development, 1988, 28: 7-55.
[13]
AOAC. Association of Official Analytical Chemists Inc, 15th ed[M]. USA: Virginia, 1990.
[14]
Van Soest P J, Robertson J B, Lewis B. Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition[J]. Journal of Dairy Science, 1991, 74: 3583-3597.
[15]
Rskov E R, McDonald Ι. The estimation of protein degradability in the rumen from incubation measurements weighed according to rate of passage[J]. Agriculture Science Camb, 1979, 92: 499-503.
[16]
Liu D, Liu J X, Zhu S L, et al. Histological investigation of tissues and cell wall of rice straw influenced by pretreatment with different chemicals and rumen degradation[J]. Journal of Animal Feed Science, 2005, 14: 367-381.
[17]
Sampth K T, Wood C D, Prasad C S. Effect of urea and by products on the in vitro fermentation of untreated and treated finger millet straw[J]. Journal of Science of Food Agriculture, 1995, 67: 323-328.
[18]
Wang D, Li F D, Zhang Y D, et al. Mixed silage of potato pulp and corn straw affects growth performance, ruminant environments and blood biochemical parameters of mutton sheep[J]. Acta Prataculturae Sinica, 2012, 21(5): 47-54.
[19]
Cui Z H, Hao L Z, Liu S J, et al. Evaluation of the fermentation characteristics of mixed oat green hay and native pastures in the Qinghai plateau using an in vitro gas production technique[J]. Acta Prataculturae Sinica, 2012, 21(3): 250-257.
[20]
Cui Z H, Liu S J, Hao L Z, et al. Evaluation of associate effects of ruminants forages in the Qinghai Plateau using in vitro gas production technique[J]. Pratacultural Science, 2011, 28(10): 1894-1900.
[21]
Lü Y Y, Cui H J, Cai L F, et al. Study the combined effects of among three kinds of roughage cows commonly used[J]. Feed Research, 2011, 9: 3-5
[22]
Gao J, Jia Y S, Wang X G, et al. Study on the multiple-factors associative effects of forage[J]. Acta Prataculturae Sinica, 2012, 21(4): 236-243.
[23]
Zhang J K, Zou Q H, Wang J F, et al. Overall study the combined effects of rumen fermentation in vitro by mixing straw and multi-level alfalfa[J]. Feed Industry, 2011, 32(17): 40-48.
[24]
Lu G L, Li D F, Yang L Y. Effects of different diets combination on rumen fermentation parameters[J]. Heilongjiang Animal Science and Veterinary Medicine (Technology Edition), 2011, 8: 101-103.
Bodine T N, Purvis ⅡH T. Effects of supplemental energy and/or degradable intake protein on performance, grazing behavior, intake, digestibility, fecal and blood indices by beef steers grazed on dormant native tallgrass Prairie[J]. Journal of Animal Science, 2003, 81: 304-317.
Menke K H, Raab L, Salewski A,et al. The estimation of the digestibility and metabolisable energy content of ruminant and starch digestion[J]. Small Ruminant Research, 1979, 93: 217-222.
[36]
Menke K H, Steingass H. Estimation of the energetic feed value obtained from chemical analysis and in vitro gas production using rumen fluid[J]. Animal Research and Development, 1988, 28: 7-55.
[37]
AOAC. Association of Official Analytical Chemists Inc, 15th ed[M]. USA: Virginia, 1990.
[38]
Van Soest P J, Robertson J B, Lewis B. Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition[J]. Journal of Dairy Science, 1991, 74: 3583-3597.
[39]
Rskov E R, McDonald Ι. The estimation of protein degradability in the rumen from incubation measurements weighed according to rate of passage[J]. Agriculture Science Camb, 1979, 92: 499-503.
[40]
Liu D, Liu J X, Zhu S L,et al. Histological investigation of tissues and cell wall of rice straw influenced by pretreatment with different chemicals and rumen degradation[J]. Journal of Animal Feed Science, 2005, 14: 367-381.
[41]
Sampth K T, Wood C D, Prasad C S. Effect of urea and by-products on the in vitro fermentation of untreated and treated finger millet straw[J]. Journal of Science of Food Agriculture, 1995, 67: 323-328.