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The Ⅶ International Symposium on the Nutrition of Herbivores(ISNH-7)

作者： Q.Yue~1 H.J.Yang~(1 3) Ch.Y.Xie~1 X.B.Yao~1 J.Q.Wang~2 ~1Department of Animal Biology & Physiology College of Biological Sciences China Agricultural University Beijing 100094 P.R.China ~2State Key Laboratory of Animal Nutrition Institute of Animal Science China Academy of Agricultural Sciences Beijing 100094 P.R.China

＜正＞The study was to provide the Chinese Feedbank with intestinal digestibility（Idg）of crude protein（CP）and AA for feedstuffs commonly used in *** various AA of feedstuffs weren’t synchronously digested,while a larger variation was found in the same AA between *** CP Idg estimated by mobile nylon bag technique in soyabean meal,cottonseed meal,peanut cake meal,rapeseed meal,rice bran,maize germ meal,wheat bran and lucerne hay were 0.964,0.813, 0.950,0.826,0.586,0.793,0.679 and 0.400,*** has a strong correlation with the value obtained by three-step in vitro procedure.

关键词： crude protein amino acid intestinal digestibility ruminants

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A comparative study of the intestinal digestive characteristics of diferent feeds for Holstein cows

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Animal Diseases 2022年第3期2卷 175-180页

作者： Shuai Han Fan Zhang Yanli Zhao Xiaoyu Guo Xiaowei Zhu Sumei Yan Laboratory Animal Center of Inner Mongolia Medical University Inner Mongolia Medical UniversityHohhotChina Tianjin Medical University Cancer Institute and Hospital National Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjinChina College of Animal Science Inner Mongolia Agricultural UniversityHohhotChina

This experiment was conducted with lactating Chinese Holstein cows to study the nutritional value of local protein feed resources.A three-step method(TSP)and a modifed three-step method(MTSP)were used to measure the in vitro digestibility of rumen undegraded protein(RUP)for 11 feedstufs and *** experimental feeds were chosen and air-dried to investigate the efects of diferent growth periods and varieties on nutrition value and RUP *** small intestinal digestibility of RUP by TSP in concentrated feed was determined to be higher than that of roughage,approximately 65%.The highest concentrate(79%)was SBM(soybean mean),while the lowest was corn(65%).The proportions of DDGS(with soluble wine lees)and SFM(sunfower meal)were 70.9 and 74.9%,***(alfalfa mowed at the squaring stage)had the highest small intestinal digestibility of RUP(55%)among roughages,and WCS(whole-plant corn silage)had the lowest digestibility(40.5%).When the small intestinal digestibility of RUP was determined using the MTSP method,it exhibited similar results to the TSP ***,the values were generally higher,and there was a strong signifcant correlation between them(R2=0.967,Pdigestibility of diferent feeds,make a reasonable feed formula to efectively prevent diseases.

关键词： Holstein cows intestinal digestibility Rumen

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