期刊文献+

中国荷斯坦牛乳尿素氮浓度昼夜变化规律研究 被引量:1

下载PDF
导出
摘要 随机收集了8头处于泌乳期的中国荷斯坦奶牛24h内乳样,对乳中尿素氮浓度的昼夜变化情况进行研究。结果发现,同一奶牛个体在不同的时间点乳尿素氮浓度差异较大。因此,单个时间点的乳液尿素氮浓度代表性较差,有必要收集全天乳样。
作者 翟少伟
出处 《广东畜牧兽医科技》 2008年第6期35-37,共3页 Guangdong Journal of Animal and Veterinary Science
基金 集美大学科研基金资助(ZQ2006027)
  • 引文网络
  • 相关文献

参考文献14

  • 1Gustafsson A H,Palmquist D L, Diurnal variation of rumen ammonia, serum urea, and milk urea in dairy cows at high and low yields[J].J Dairy Sci, 1993,(76):475-484.
  • 2Hof G, Vervoorn M D, Lenaers P J, et al. Milk urea nitro gen as a tool to monitor the protein nutrition of dairy cows[J].J Dairy Sci, 1997,(80):3333-3340.
  • 3Baker L D, Ferguson J D, Ramberg C F. Kinetic analysis of urea transport from plasma to milk in dairy cows [J],J Dairy Sci, 1992,75(Suppl. 1):181(Abstr).
  • 4Jonker J S, Kohn R A, Erdman R & Using milk urea nitrogen to predict nitrogen excretion and utilization efficiency in lactating dairy cows[J].J Dairy Sci, 1998, (81):2681-2692.
  • 5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,1991:32.
  • 6AOAC. Official Methods of Analysis[M].lSth ed. Assoc Offic Anal Chem, Arlington, VA. 1990.
  • 7Nousiainen J, Shingfield K J;Huhtanen P. Evaluation of milk nitrogen as a diagnostic of protein feeding [J]. J Dairy Sci, 2004, (87) :386-398.
  • 8Broderick G A, Clayton M K.A statistical evaluation of animal and nutritional factors influencing concentrations of milk urea nitrogen[J].J Dairy Sci, 1997, (80):2964-2971.
  • 9韩继福,吴其宏.过瘤胃氨基酸对乳牛瘤胃发酵、产乳量及乳成分的影响[J].安徽农业大学学报,2003,30(2):139-143. 被引量:38
  • 10Miettinen P V A, Juvonen R O. Diurnal variations of serum and milk urea levels in dairy cows[J].Acta Agric Scand, 1990,(40):289-296.

二级参考文献7

  • 1Blum J W, Bruckmaier R M and Jans F. Rumen-protected methionine fed to dairy cows: Bioavailability and effects on plasma amino acid pattern and plasma metabolite and insulin concentrations [J]. J Dairy Sci, 1999, 82:1991-1998.
  • 2Wright T C, Moscardini S, Luimes P H, Susmel P, et al. Effects of rumen-undegradable protein and feed intake on nitrogen balance and milk protein production in dairy cows [J]. J Dairy Sci, 1998, 81:784-793.
  • 3Donkin S S, Varga G A, Sweeney T F and Muller L D. Rumen-protected methionine and lysine: effects on animal performance, milk protein yield and physiological measures [J]. J Dairy Sci, 1989, 72:1484-1489.
  • 4Overton T R, Emmert L S and Clark J H. Effects of ssource of carbohydrate and protein and rument-protected methionine on performance of cows . J Dairy Sci, 1998, 81 : 221-228.
  • 5Bateman H D, Spain J N, Kerley M S, et al. Evaluation of ruminally protected methionine and lysine or blood meal and fish meal as protein sources, for lactating Holsteins . J Dairy Sci, 1999, 82:2115-2120.
  • 6Canale C J, Muller L D, Mccahom H A, et al. Dietary fat and ruminally protected amino acid for high producing dairy cows . J Dairy Sci, 1990, 73:135-141.
  • 7Lundquist R G, Stern M D, Qtterby D E, et al. Influence of methionine hydroxy nanlog and DL-methionine on rumen protozoa and volatile fatty acids . J Dairy Sci, 1994, 68:3055-3058.

共引文献86

同被引文献3

引证文献1

二级引证文献6

;
使用帮助 返回顶部