ARROQUY J I,COCHRAN R C,VILLARREAL M,et al.Effect of level of rumen degradable protein and type of supplemental non-fiber carbohydrate on intake and digestion of low quality grass hay by beef cattle[J].Animal Feed Science and Technology,2004,115:83-99.
[8]
WICKERSHAM T A,TITGEMEYER E C,COCHRAN R C,et al.Effect of rumen-degradable intake protein supplementation on urea kinetics and microbial use of recycled urea in steers consuming low-quality forage[J].Journal of Animal Science,2008,86:3079-3088.
[9]
HRISTOV A N,ROPP J K,HUNT C W.Effect of barley and its amylopectin content on ruminal fermentation and bacterial utilization of ammonia-N in vitro[J].Animal Feed Science and Technology,2002,99(1):25-36.
OKINEA A,HANADA A,AIBIBULA Y,et al.Ensiling of potato pulp with or without bacterial inoculants and its effection fermentation quality,nutrient composition and nutritive value [J].Animal Feed Science and Technology,2005,121(3/4):329-343.
[16]
ZUNONG M,TUERHONG T,OKAMOTO M,et al.Effects of a potato pulp silage supplement on the composition of milk fatty acids when fed to grazing dairy cows[J].Animal Feed Science and Technology,2009,152(1/2):81-91.
ALLISON M N,SMITH R H.Biosynthesis of amino acids by ruminal microorganisms[J].Journal of Animal Science,1967,29:797-807.
[21]
KLEVESAHL E A,COCHRAN R C,TITGEMEYER E C,et al.Effect of a wide range in the ratio of supplemental rumen degradable protein to starch on utilization of low quality,grass hay by beef steers[J].Animal Feed Science and Technology,2003,105:5-20.
