Effects of Dietary Carbohydrate Composition on Nitrogen Efficiency of Dairy Cows

ZHAO Meng; WANG Jiaqi; ZHU Dan; ZHOU Xiaoqiao; ZHANG Ting; NIU Junli; ZHANG Kaizhan; BU Dengpan

doi:10.3969/j.issn.1006-267x.2015.08.012

Chinese Journal of Animal Nutrition >

2015 , Vol. 27 >Issue 8: 2405 - 2413

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.08.012

Molecular Nutrition

Effects of Dietary Carbohydrate Composition on Nitrogen Efficiency of Dairy Cows

ZHAO Meng ,
WANG Jiaqi ,
ZHU Dan ,
ZHOU Xiaoqiao ,
ZHANG Ting ,
NIU Junli ,
ZHANG Kaizhan ,
BU Dengpan

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1. State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
2. Synergetic Innovation Center of Food Safety and Nutrition, Northeast Agriculture University, Harbin 150030, China;
3. CAAS-ICRAF Joint Laboratory on Agroforestry and Sustainable Animal Husbandry, Beijing 100193, China

Received date: 2015-03-16

Online published: 2015-08-13

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Abstract

This study was designed to investigate the effects dietary carbohydrate composition on nitrogen efficiency of dairy cows. Eight primiparous including four rumen cannulated dairy cows were assigned to 4 treatments in a 4×4 Latin square design with two cows in each treatment (1 normal cow and 1 rumen cannulated cows). Dietary carbohydrate composition was expressed as ratio of neutral detergent fiber to starch (NDF :starch). Oat hay, corn silage and corn were used to adjust dietary NDF:starch, and NDF:starch was 0.86, 1.18, 1.63 and 2.34, respectively. The experiment had four periods, each period was 21 d containing 14 d of adaptation and 7 d of sampling. The results showed as follows: 1) the correlation between milk protein yield and crude protein intake was the highest (r=0.874, P<0.05), which was followed by metabolizable protein (MP) yield (r=0.700, P<0.05) and microbial protein (MCP) yield (r=0.484, P<0.05); 2) with the increase of dietary NDF:starch, significantly quadratic relationship with the efficiency of dietary crude protein intake to milk protein was observed (P<0.05), linear increasing trend of the efficiency of dietary crude protein to metabolizable protein was observed (0.05≤P<0.10), and quadratic trend of the efficiency of metabolic protein to milk protein was observed (0.05≤P<0.10), while no significant effects were observed in efficiencies of microbial protein to milk protein, dietary crude protein to microbial protein and microbial protein to metabolizable protein (P>0.05); when dietary NDF:starch was 1.71, the efficiency of dietary crude protein to milk protein reached the highest level of 27.6%; 3) with the increase of dietary NDF:starch, the content of urea nitrogen in urine showed a trend of quadratic change (0.05≤ P< 0.10), however, the content of urea nitrogen in blood and milk were significantly linearly increased (P<0.05). Therefore, dietary carbohydrate composition can affect nitrogen utilization, and with the increase of dietary NDF:starch, quadratic increase of the efficiency of dietary crude protein to milk protein can be observed. Dietary NDF:starch of 1.71 can obtain the optimal nitrogen efficiency in dairy cows under the conditions of the present diet.

Key words： dairy; carbohydrate; nitrogen efficiency

Cite this article

ZHAO Meng , WANG Jiaqi , ZHU Dan , ZHOU Xiaoqiao , ZHANG Ting , NIU Junli , ZHANG Kaizhan , BU Dengpan . Effects of Dietary Carbohydrate Composition on Nitrogen Efficiency of Dairy Cows[J]. Chinese Journal of Animal Nutrition, 2015 , 27(8) : 2405 -2413 . DOI: 10.3969/j.issn.1006-267x.2015.08.012

References

[1] 李德发.饲料高效利用与低碳氮排放畜牧业[J].中国家禽,2010,32(11):1-5.

[2] CASTILLO A R,KEBREAB E,BEEVER D E,et al.A review of efficiency of nitrogen utilisation in lactating dairy cows and its relationship with environmental pollution[J].Journal of Animal and Feed Sciences,2000,9(1):1-32.

[3] KOHN R A,DOU Z,FERGURSON J,et al.A sensitivity analysis of nitrogen losses from dairy farms[J].Journal of Environmental Management,1997,50(4):417-428.

[4] HUHTANEN P,HRISTOV A N.A meta-analysis of the effects of dietary protein concentration and degradability on milk protein yield and milk N efficiency in dairy cows[J].Journal of Dairy Science,2009,92(7):3222-3232.

[5] CANTALAPIEDRA-HIJAR G,PEYRAUD J L,LEMOSQUET S,et al.Dietary carbohydrate composition modifies the milk N efficiency in late lactation cows fed low crude protein diets[J].Animal,2014,8(2):275-285.

[6] CANTALAPIEDRA-HIJAR G,LEMOSQUET S,RODRIGUEZ-LOPEZ J M,et al.Diets rich in starch increase the posthepatic availability of amino acids in dairy cows fed diets at low and normal protein levels[J].Journal of Dairy Science,2014,97(8):5151-5166.

[7] ARNDT C,POWELL J M,AGUERRE M J,et al.Performance,digestion,nitrogen balance,and emission of manure ammonia,enteric methane,and carbon dioxide in lactating cows fed diets with varying alfalfa silage-to-corn silage ratios[J].Journal of Dairy Science,2015,98(1):418-430.

[8] HRISTOV A N,ROPP J K.Effect of dietary carbohydrate composition and availability on utilization of ruminal ammonia nitrogen for milk protein synthesis in dairy cows[J].Journal of Dairy Science,2003,87(7):2416-2427.

[9] 中华人民共和国农业部.NY/T 34—2004奶牛饲养标准[S].北京:中华人民共和国农业部,2004.

[10] AOAC.Official methods of analysis of AOAC international[S].17th ed.Arlington,V.A.:AOAC,2000.

[11] BERTRAND A,CASTONGUAY Y,NADEAU P,et al.Oxygen deficiency affects carbohydrate reserves in overwintering forage crops[J].Journal of Experimental Botany,2003,54(388):1721-1730.

[12] BHANDARI S K,OMINSKI K H,WITTENBERG K M,et al.Effects of chop length of alfalfa and corn silage on milk production and rumen fermentation of dairy cows[J].Journal of Dairy Science,2007,90(5):2355-2366.

[13] CHEN X B,GOMES M J.Estimation of microbial protein supply to sheep and cattle based on urinary excretion of purine derivatives:an overview of technical details[M]//International feed resources unit.Aberdeen:Rowett Research Institute,1992.

[14] VALADARES R F D,BRODERICK G A,VALADARES FILHO S C,et al.Effect of replacing alfalfa silage with high moisture corn on ruminal protein synthesis estimated from excretion of total purine derivatives[J].Journal of Dairy Science,1999,82(12):2686-2696.

[15] GARGALLO S,CALSAMIGLIA S,FERRET A.Technical note:a modified three-step in vitro procedure to determine intestinal digestion of proteins[J].Journal of Animal Science,2006,84(8):2163-2167.

[16] ZHU W,FU Y,WANG B,et al.Effects of dietary forage sources on rumen microbial protein synthesis and milk performance in early lactating dairy cows[J].Journal of Dairy Science,2013,96(3):1727-1734.

[17] 冯仰廉.反刍动物营养学[M].北京:科学出版社,2004.

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

[19] GOZHO G N,KRAUSE D O,PLAIZIER J C.Rumen lipopolysaccharide and inflammation during grain adaptation and subacute ruminal acidosis in steers[J].Journal of Dairy Science,2006,89(11):4404-4413.

[20] KHAFIPOUR E,KRAUSE D O,PLAIZIER J C.A grain-based subacute ruminal acidosis challenge causes translocation of lipopolysaccharide and triggers inflammation[J].Journal of Dairy Science,2009,92(3):1060-1070.

[21] ZEBELI Q,AMETAJ B N.AMETAJ.Relationships between rumen lipopolysaccharide and mediators of inflammatory response with milk fat production and efficiency in dairy cows[J].Journal of Dairy Science,2009,92(8):3800-3809.

[22] WANG C,LIU J X,YUAN Z P,et al.Effect of level of metabolizable protein on milk production and nitrogen utilization in lactating dairy cows[J].Journal of Dairy Science,2007,90(6):2960-2965.

[23] WELCH J G,HOOPER A P.Ingestion of feed and water[M]//CHURCH D C.The ruminant animal:digestive physiology and nutrition.Prospect heights.Illinois:Waveland Press,1993:108-116.

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