Nutrient Dynamic and Feeding Values of Wheat Straws in Different Growing Stages

MU Huijie; LIU Qinghua; XING Qiyin

doi:10.3969/j.issn.1006-267x.2014.02.034

Chinese Journal of Animal Nutrition >

2014 , Vol. 26 >Issue 2: 549 - 556

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.02.034

Short Communications

Nutrient Dynamic and Feeding Values of Wheat Straws in Different Growing Stages

MU Huijie ,
LIU Qinghua ,
XING Qiyin

Expand

1. Animal Science Department, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China;
2. College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China

Received date: 2013-08-07

Online published: 2014-01-27

Fold

Abstract

The objective of this study was to evaluate the nutrient values of wheat straw in different growing stages using the Cornell net carbohydrate-protein system (CNCPS). The contents of common nutrients and 17 kinds of amino acids were determined by CNCPS, and carbohydrate (CHO) and crude protein (CP) constituents were calculated according to the CNCPS method in milk stage telophase, wax ripe stage initial, wax ripe stage metaphase, wax ripe stage telophase, and full ripe stage of wheat straw. The results showed as follows: 1) the CHO content of wheat straw in wax ripe stage telophase was significantly higher than that in the other growing stages (P<0.01). Among CHO constituents, non-structural carbohydrate and available fiber contents in milk stage telophase were significantly lower or higher than those in the other growing stages (P<0.01), respectively, and there were no significant differences among the other growing stages (P>0.05). 2) The CP content of wheat straw was decreased to the minimum in wax ripe stage telophase (P<0.01), and went up in full ripe stage (P<0.05). Among CP constituents, soluble crude protein (SP) content in full ripe stage was significantly lower than that in the other stages (P<0.01 or P<0.05), and significantly lower in the wax ripe stage metaphase than that in the wax ripe stage telophase (P<0.05). Unavailable crude protein content in the first two stages was significantly lower than that in the last three stages (P<0.01) with no significant differences among the other growing stages (P>0.05). 3) Total essential amino acid (TEAA) content of CP changed in a low-high dynamic pattern, and had a turning point in the wax ripe stage telophase. Methionine content of TEAA changed in a low-high-low dynamic pattern, and had a turning point in the wax ripe stage metaphase and the full ripe stage, respectively. Non-amino acid nitrogen content of SP in the wax ripe stage telophase was very significantly lower than that in wax ripe stage metaphase and full ripe stage (P<0.01). The results indicate that the growing stage of wheat straw significantly affects the contents and composition of CP and CHO, and the changes the amino acid pattern and the non-amino acid nitrogen content of CP.

Key words： Cornell net carbohydrate and protein system; growing stage; wheat straw; amino acid pattern

Cite this article

MU Huijie , LIU Qinghua , XING Qiyin . Nutrient Dynamic and Feeding Values of Wheat Straws in Different Growing Stages[J]. Chinese Journal of Animal Nutrition, 2014 , 26(2) : 549 -556 . DOI: 10.3969/j.issn.1006-267x.2014.02.034

References

[1] 王桃, 徐长林, 张丽静, 等.5个燕麦品种和品系不同生育期不同部位养分分布格局[J].草业学报, 2011, 20(4):70-81.

[2] 张吉鹍, 李龙瑞, 邹庆华.江西几种奶牛常用饲料的多体系营养价值评定[J].江西农业大学学报, 2012, 34(5):1003-1007.

[3] 赵金石.基于CNCPS模型思路的中国肉牛、奶牛营养动态模型的建立与应用[D].硕士学位论文.北京:中国农业大学, 2008.

[4] FOX D G, TEDESCHI L O, TYLUTKI T P, et al.The Cornell net carbohydrate and protein system model for evaluating herd nutrition and nutrient excretion[J].Animal Feed Science and Technology, 2004, 112(1/2/3/4):29-78.

[5] TEDESCHI L O, FOX D G, DOANE P H.Evaluation of the tabular feed energy and protein undegradability values of the National Research Council nutrient requirements of beef cattle[J].The Professional Animal Scientist, 2005, 21(5):403-415.

[6] TYLUTKI T P, FOX D G, DURBALA V M, et al.Cornell net carbohydrate and protein system:a model for precision feeding of dairy cattle[J].Animal Feed Science and Technology, 2008, 143(1/2/3/4):174-202.

[7] 靳玲品, 李艳玲, 屠焰, 等.应用康奈尔净碳水化合物-蛋白质体系评定我国北方奶牛常用粗饲料的营养价值[J].动物营养学报, 2013, 25(3):512-526.

[8] 周俊华, 周彩霞, 梁贤威, 等.应用康奈尔净碳水化合物-蛋白质体系评定广西水牛常用粗饲料的营养价值[J].动物营养学报, 2011, 23(12):2190-2197.

[9] 曲永利, 吴建豪, 刘立威, 等.应用CPM模型改善日粮能氮平衡和提高奶牛生产性能的效果评价[J].动物营养学报, 2010, 22(2):310-317.

[10] 杜晋平.基于CNCPS模型的肉牛饲料碳水化合物组分的消化及采食量与日增重预测评估[D].博士学位论文.北京:中国农业大学, 2009.

[11] AOAC.Official methods of analysis[S].13th ed.Washington, D.C.:Association of Official Analytical Chemists, 1980.

[12] VAN SOEST P J, SNIFFEN C J, MERTENS D R, et al.A net protein system for cattle:the rumen submodel for nitrogen[C]//OWENS F N.Protein requirements for cattle:proceedings of an international symposium.Stillwater:Oklahoma State University, 1980:225.

[13] KRISHNAMOORTHY U C, SNIFFEN C J, STERN M D, et al.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):555-565.

[14] AACC.Approved methods of the AACC[M].Saint Paul:American Association of Cereal Chemistry, 1976.

[15] SMITH L W, GOERING H K, GORDON C H.Relationships of forage compositions with rates of cell wall digestion and indigestibility of cell walls[J].Journal of Dairy Science, 1972, 55(2):1140-1149.

[16] SNIFFEN C J, O'CONNOR J D, VAN SOEST P J, et al.A net carbohydrate and protein system for evaluating cattle diets:Ⅱ.Carbohydrate and protein availability[J].Journal of Animal Science, 1992, 70(11):3562-3577.

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

[18] 王东, 于振文, 张永丽, 等.收获时期对优质强筋冬小麦籽粒产量和品质的影响[J].山东农业科学, 2003(5):6-8.

[19] 赵丽华, 余汝华, 莫放, 等.不同收获和贮存时间对高油298玉米秸秆营养价值的影响[J].中国畜牧兽医, 2004, 31(8):11-13.

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

[21] 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.

Options

Outlines

模态框（Modal）标题

Abstract

Cite this article

References