[1] 董世魁,龙瑞军,胡自治.不同采食水平下舍饲干奶牦牛能量转化、氮、钙、磷代谢的研究[J].草业学报,2000,9(2):32-37.
[2] 张莹,郭旭生,龙瑞军,等.饲粮氮水平对牦牛瘤胃发酵及营养物质消化代谢特征的影响[J].动物营养学报,2011,23(6):1-7.
[3] WANG H C,LONG R J,LIANG J B,et al.Comparison of nitrogen metabolism in yak (
Bos grunniens) and indigenous cattle (
Bos taurus) on the
Qinghai-Tibetan plateau[J].Asian-Australasian Journal of Animal Sciences,2011,24(6):766-773.
[4] WANG M P,ZHAO C Z,LONG R J,et al.Rangeland governance in China:overview,inpacts on
Suan county in
Gansu province and future options[J].The Rangeland Journal,2010,32:155-163.
[5] 米见对,郭旭生,周建伟,等.日粮氮水平对牦牛瘤胃发酵参数和氮组分的影响[J].中国农业科学,2011,44(22):4678-4686.
[6] LONG R J,DONG S K,CHEN X B,et al.Preliminary studies on urinary excretion of purine derivatives and creatinine in yaks[J].The Journal of Agricultural Scinece,1999,133(6):427-431.
[7] LONG R J,DONG S K,HU Z Z,et al.Digestibility,nutrient balance and urinary purine derivative excretion in dry yak cows fed oat hay at different levels of intake[J].Livestock Production Science,2004,88(1/2):27-32.
[8] LONG R J,DONG S K,WEI X H,et al.The effect of supplementary feeds on the bodyweight of yaks in cold season[J].Livestock Production Science,2005,93(3):197-204.
[9] WANG H C,LONG R J,ZHOU W,et al.A comparative study on urinary purine derivative excretion of yak (
Bos grunniens),cattle (
Bos taurus),and crossbred (
Bos taurus×Bos grunniens) in the
Qinghai-Tibetan plateau,China[J].Journal of Animal Science,2009,87(7):2355-2362.
[10] GUO X S,ZANG Y,ZHOU J W,et al.Nitrogen metabolism and recycling in yaks (
Bos grunniens) offered a forage-concentrate diet differing in N concentration[J].Animal Production Scinece,2012,52(5):287-296.
[11] 中国饲料数据库情报中心.中国饲料成分及营养价值表(2013年第24版)[J].中国饲料,2013(22):38-42.
[12] 陈桂银.饲料分析与检测[M].北京:中国农业大学出版社,2008.
[13] AOAC.Official methods of analysis of the association of official analytical chemists[S].15th ed.Washington,D.C.:Association of Official Analytical Chemists,1990.
[14] 叶应妩,王毓.三全国临床检验操作规程[M].南京:东南大学出版社,1991:226-228.
[15] BRODERICK G A,KANG J H.Automated simultaneous determination of ammonia and total amino acids in ruminal fluid and
in vitro media[J].Journal of Dairy Science,1980,63(1):64-75.
[16] 冯仰廉.反刍动物营养学[M].北京:科学版社,2004:241.
[17] 韩兴泰,陈杰,韩正康.饲喂不同蛋白水平日粮的牦牛瘤胃氮代谢与十二指肠各氮组分流量[J].动物营养学报,1998,10(1):34-43.
[18] 李静,张晓明,莫放,等.饲料级缩二脲作为反刍动物非蛋白氮饲料的安全性与有效性系列研究(3)[J].饲料研究,2008(1):53-56.
[19] 王文娟.瘤胃灌注小肽对肉牛瘤胃发酵与营养物质消化代谢的影响[D].硕士学位论文.泰安:山东农业大学,2011:25-26.
[20] 李文,黄应祥,王聪,等.戊酸对西门塔尔牛瘤胃氨态氮及尿嘌呤衍生物浓度的影响[J].粮食与饲料工业,2006(8):42-43.
[21] 王聪,刘强,董宽虎,等.包被铜对西门塔尔牛瘤胃pH、VFA和氨态氮的影响[J].新饲料,2007(11):39-40.
[22] PRADHAM K.Rumen ecosystem in relation to cattle and buffalo nutrition[C]//Proceedings of the first Asian Buffalo Association Congress.Khon,Kaen:,1994:221-243.
[23] 陈喜斌,冯仰廉.糊化淀粉对尿素的缓释效果的研究[J].饲料博览,1995(3):5-7.
[24] 孙德成,赵智力,魏曼琳,等.不同精粗料比全混合日粮对奶牛瘤胃指标的影响[J].饲料研究,2008(10):47-50.
[25] 王春梅,孙龙生,赵国琦,等.日粮蛋白质水平对湖羊胃肠道内pH值、氨态氮和菌体蛋白的影响[J].饲料工业,2009,30(13):27-29.
[26] 韩兴泰,胡令浩,谢敖云,等.牦牛瘤胃细菌中核糖核酸含量及其与细菌总氮比值的研究[J].动物营养学报,1998,10(2):35-39.
[27] MARINI J C,VAN AMBURGH M E.Nitrogen metabolism and recycling in Holstein heifers[J].Journal of Animal Science,2003,81(2):545-552.
[28] 黄洁,申跃宇,姜军,等.日粮蛋白质进食量对杂交育成母牛氮代谢的影响[J].中国畜牧杂志,2012,48(11):52-54.
[29] 刘哲,张昌吉,郝正里,等.饲喂含不同秸秆的全日粮颗粒料对绵羊瘤胃及血液代谢参数的影响[J].中国饲料,2005(11):12-14.
[30] 张昌吉,刘哲,郝正里,等.含不同秸秆的全饲粮颗粒料对绵羊瘤胃代谢参数的影响[J].草业科学,2008,25(1):82-86.
[31] KIM H D,HA J K,LTABASHI H,et al.Effects of popped soybean on concentration of ruminal peptide and blood amino acids in Holstein calves[J].Asian-Australasian Journal of Animal Science,1998,11(2):155-161.
[32] 陈小连,贾亚红,孙龙生,等.不同中性洗涤纤维与非纤维性碳水化合物比例日粮对山羊瘤胃和血液氮素利用的影响[J].中国畜牧杂志,2007,43(3):36-39.
[33] JONKER J S,KOHN R A,ERDMAN R A.Using milk urea nitrogen to predict nitrogen excretion and utilization efficiency in lactating dairy cows[J].Journal of Dairy Science,1998,81(10):2681-2692.
[34] 王洪荣,冯宗慈,卢德勋,等.应用瘤胃液氨氮、挥发性脂肪酸和血浆尿素氮水平检测放牧绵羊营养状况的研究[J].内蒙古畜牧科学,1997(增刊):132-137.
