动物营养学报 >

2013 , Vol. 25 >Issue 11: 2741 - 2747

DOI: https://doi.org/10.3969/j.issn.1006-267x.2013.11.030

研究简报 Short Communications

康奈尔净碳水化合物和蛋白质体系定义的C组分的小肠可消化性

  • 崔英才 ,
  • 林雪彦 ,
  • 苏鹏程 ,
  • 王中华
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  • 山东农业大学动物科技学院, 泰安 271018

收稿日期: 2013-05-09

  网络出版日期: 2013-10-27

基金资助

国家现代农业(奶业)产业技术体系(CARS-37)

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Small Intestine Degradability of C Component Defined by Cornell Net Carbohydrate and Protein System

  • CUI Yingcai ,
  • LIN Xueyan ,
  • SU Pengcheng ,
  • WANG Zhonghua
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  • College of Animal Science, Shandong Agricultural University, Tai'an 271018, China

Received date: 2013-05-09

  Online published: 2013-10-27

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摘要

本试验旨在评定康奈尔净碳水化合物和蛋白质体系(CNCPS)的C组分的小肠可消化性。从奶牛场采集10种饲料样品,测定其C组分的瘤胃降解率,采用体外法测定饲料原料及12 h瘤胃降解残渣的C组分的小肠消化率。结果表明,10种饲料C组分的瘤胃降解速度常数(kc)在0.39%/h~3.89%/h之间;饲料原料C组分小肠消化率在0~81.61%之间,饲料12 h瘤胃降解残渣C组分小肠消化率在0~43.21%之间,表明不同的饲料原料和12 h瘤胃降解残渣之间的C组分小肠消化率存在差异,部分饲料具有很高的C组分小肠消化率,不应忽略。结果提示,CNCPS定义的C组分在瘤胃中可以降解,且部分种类饲料该组分具有很高的小肠消化率,在评定饲料品质时应考虑C组分对小肠可消化氨基酸流量的贡献。

关键词： CNCPS; C组分; 小肠消化率; 瘤胃降解率

本文引用格式

崔英才 , 林雪彦 , 苏鹏程 , 王中华 . 康奈尔净碳水化合物和蛋白质体系定义的C组分的小肠可消化性[J]. 动物营养学报, 2013 , 25(11) : 2741 -2747 . DOI: 10.3969/j.issn.1006-267x.2013.11.030

Abstract

This study was conducted to investigate the small intestine degradability of C protein component defined by the Cornell net carbohydrate and protein system (CNCPS). The ruminal degradability of C component of 10 feed samples from different dairy farms were measured. The small intestine digestibility of C component in raw materials and 12 h ruminal degradation residue were analyzed by in vitro method. The results showed that ruminal degradability rate coefficient (kc) of C component in the 10 feed samples ranged from 0.39%/h to 3.89%/h, the small intestine digestibility of C component in feed raw materials ranged from 0 to 81.61%, and that in 12 h ruminal degradation residue ranged from 0 to 43.21%, which indicated that there was difference in different feed raw materials and 12 h ruminal degradation residue, and the small intestine digestibility of some feeds was too high to be ignored. It is concluded that C protein component defined by the CNCPS is degradable in the rumen, and some kinds of feed might have high digestibility in the small intestine. The contribution of C component to digestive amino acids in small intestine should be considered.

Key words： CNCPS; C protein component; small intestine digestibility; ruminal degradability

参考文献

[1] PICHARD D G,VAN SOEST J P.Protein solubility of ruminant feeds[C]//Proceedings of Cornell Nutrition Conference.Ithaca:,1977:91-98.

[2] KRISHNAMOORTHY U C,MUSCATO T V,SNIFEN C J,et al.Nitrogen fractions in selected feedstuffs[J].Journal of Dairy Science,1982,65(2):217-225.  

[3] SIFFEN C J,VAN SOEST P J.Evaluation of a mathematical model of rumen digestion and an in vitro simulation of rumen proteolysis to estimate the rumen-undegraded nitrogen content of feedstuffs[J].British Journal of Nutrition,1983,50(3):555-568.  

[4] NRC.Nutrient requirements of dairy cattle[M].7th ed.Washington,D.C.:National Academy Press,2001.

[5] CLARK J H,MURPHY M R,CROOKER B A.Supplying the protein needs of dairy cattle from by-product feeds[J].Journal of Dairy Science,1987,70(5):1092-1109.  

[6] EDIONWE A O,OWEN F G.Relation of intake to digestibility of diets containing soyhulls and distillers dried grains[J].Journal of Dairy Science,1989,72(7):1786-1792.  

[7] WEISS W P,ERICKSON D O,ERICKSON G M,et al.Barley distillers grains as a protein supplement for dairy cows[J].Journal of Dairy Science,1989,72(4):980-986.  

[8] VAN SOEST P J.Use of detergents in analysis of fibrous feeds,Ⅲ.Study of effects of heating and drying on yield of fiber and lignin in forages[J].Journal of AOAC,1965,48:785-790.

[9] YU Y.Relationship between measurements of heating and acid-detergent insoluble nitrogen in heat damaged fresh alfalfa,haylage,and hay[J].Journal of Dairy Science,1976,59(10):1845-1851.  

[10] PLEGGE S D,BERGER L L,FAHEY G C,Jr.Effect of roasting on utilization of soybean meal by ruminants[J].Journal of Animal Science,1982,55(2):395-401.

[11] BRITTON R A,KLOPFENSTEIN T J,CLEALE R M.Methods of estimating heat damage in protein sources[C]//Proceedings distillers feed conference.Cincinnati:,1986,41:67-73.

[12] ROGERS J A,CONRAD H R,DEHORITY B A,et al.Microbial numbers,rumen fermentation,and nitrogen utilization of steers fed wet or dried brewer's grains[J].Journal of Dairy Science,1986,69(3):745-753.  

[13] CLEALE R M,KLOPFENSTEIN T J,BRITTON R A.Induced non-enzymatic browning of soybean meal.Ⅲ.Digestibility and efficiency of protein utilization by ruminants of soybean meal treated with xylose or glucose[J].Journal of Animal Science,1987,65(5):1327-1335.

[14] NAKAMURA T,KLOPFENSTEIN T J,BRITTON R A.Evaluation of acid detergent insoluble nitrogen as an indicator of protein quality in nonforage proteins[J].Journal of Animal Science,1994,72(4):1043-1048.

[15] 卢德勋.现代反刍动物营养研究方法和技术[M].北京:中国农业出版社,1991.

[16] CALSAMIGLIA S,STERN M D.A three-step in vitro procedure for estimating intestinal digestion of protein in ruminants[J].Journal of Animal Science,1995,73(5):1459-1465.

[17] 郑先哲,王建英,董航飞.干燥条件对苜蓿品质指标的影响[J].东北农业大学学报,2009,40(6):101-105.

[18] SAMADI Y P.Dry and moist heating-induced changes in protein molecular structure,protein subfraction,and nutrient profiles in soybeans[J].Journal of Dairy Science,2011,94(12):6092-6102.  

[19] FOX D G,TYLUTKI T P,TEDESCHI L O,et al.CNCPS v. 5.0:the net carbohydrate and protein system for evaluation herd nutrition and nutrient excretion, model documentation[M].New York:Cornell University,2003:14853-14801.

[20] CROOKER B A,CLARK J H,SHANKS R D,et al.Effects of ruminal exposure on the amino acid profile of heated and formaldehyde-treated soybean meal[J].Journal of Animal Science,1986,69(10):2648-2657.

[21] WEISBJERG M R,HVELPLUND T,HELLBERG S,et al.Effective rumen degradability and intestinal digestibility of individual amino acids in different concentrates determined in situ[J].Animal Feed Science and Technology,1996,62(2/3/4):179-188.

[22] RULQUIN H,GUINARD J,VÉRITÉ R.Variation of amino acid content in the small intestine digesta of cattle:development of a prediction model[J].Livestock Production Science,1998,53(1):1-13.  

[23] PACHECO D,PATTON R A,PARYS C,et al.Ability of commercially available dairy ration programs to predict duodenal flows of protein and essential amino acids in dairy cows[J].Journal of Dairy Science,2012,95(2):937-963.  

[24] KEERY C M,AMOS H E,FROETSCHEL M A.Effects of supplemental protein source on intraruminal fermentation,protein degradation,and amino acid absorption[J].Journal of Animal Science,1993,76(2):514-524.
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