Degradation Characteristics and Prediction Model of Dry Matter, Starch and Neutral Detergent Fiber of Whole-Pant Corn Silage in Cow Rumen

LIU Na; BI Yanliang; DIAO Qiyu; GUO Jiangpeng; QI Zhiguo; SI Bingwen; CHENG Siyuan; TU Yan

doi:10.3969/j.issn.1006-267x.2019.12.050

2019 , Vol. 31 >Issue 12: 5846 - 5856

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.12.050

Degradation Characteristics and Prediction Model of Dry Matter, Starch and Neutral Detergent Fiber of Whole-Pant Corn Silage in Cow Rumen

LIU Na ,
BI Yanliang ,
DIAO Qiyu ,
GUO Jiangpeng ,
QI Zhiguo ,
SI Bingwen ,
CHENG Siyuan ,
TU Yan

Expand

1. Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute of Chinese Academy of Agricultural Sciences, Beijing 100081, China;
2. Beijing Municipal Animal Husbandry Station, Beijing 100107, China;
3. College of Animal Science and Techonology, Gansu Agricultural University, Lanzhou 730070, China

Received date: 2019-06-03

Online published: 2019-12-13

Fold

Abstract

This study determined the rumen degradation characteristics of whole-plant corn silage by in vitro method, and analyzed the correlation between the nutrient composition and its effective degradability, and aimed to find a rapid assessment method for the effective degradability of dry matter (DM), starch and neutral detergent fiber (NDF). Taking corn silage in different storage periods of dairy farms as the research object. The in vitro artificial rumen continuous fermentation method was used to determine the effective degradability of DM, starch, and NDF and the correlation between the nutrient composition of whole-plant corn silage and its effective degradability was analyzed. The mathematical model of nutrient composition and effective degradability of DM, starch and NDF was established. The results showed as follows:1) at silage 60, 150 and 240 h, the ruminal degradability of DM, starch and NDF was the highest when stored for 60 d, which were 33.40%, 78.91% and 25.53%, respectively. 2) The effective degradability of whole-plant corn silage DM was extremely significant positive correlated with crude protein (CP) content (P<0.01), and extremely significant negative correlated with NDF and acid detergent fiber (ADF) content (P<0.01). The effective degradability of starch was extremely significant positive correlated with starch content (P<0.01). The effective degradability of NDF was significant negative correlated or extremely significant negative correlated with NDF and ADF content (P<0.05 or P<0.01), and significant positive correlated with CP content (P<0.05). 3) The effective degradability of whole-plant corn silage DM was extremely significant positive correlated with NFC content (P<0.01), and extremely significant negative correlated with carbohydrate (CHO), digestible fibre (CB3) and indigestible fibre (CC) contents (P<0.01). The effective degradability of starch was significant positive correlated with CHO and NFC contents (P<0.05), and significant negative correlated or extremely significant negative correlated with volatile fatty acids (CA1), lactic acid (CA2), water-soluble carbohydrates (CA4), soluble fiber (CB2) contents (P<0.05 or P<0.01). The effective degradability of NDF was extremely significant negative correlated with CHO, CB3 and CC contents (P<0.01), and extremely significant positive correlated with NFC content (P<0.01). 4) Prediction equations for effective degradability of DM and starch using CP, NDF, ADF and starch were ED_(DM)=54.777-0.439NDF-0.004ADF (R²=0.973, n=51, P<0.000 1); ED_(Starch)=55.434+0.987Starch (R²=0.843, n=51, P<0.000 1); ED_(NDF)=75.786-0.765CP-1.036NDF+0.310ADF (R²=0.879, n=51, P<0.000 1). 5) Prediction equations for effective degradability of DM and starch using CHO, NFC, CB3, CHO, NFC, CA2, CA4, CB2 and CC were ED_(DM)=66.158-0.488CHO+0.330NFC-0.079CC (R²=0.980, n=51, P<0.000 1); ED_(Starch)=45.754-3.564CA4-0.827CB2+0.159CHO-0.692CA2+0.960NFC (R²=0.894, n=51, P<0.000 1); ED_(NDF)=41.972-0.457CHO+0.753NFC-0.697CC (R²=0.810, n=51, P<0.000 1). In summary, based on the strong correlation between the nutrient content of whole-plant corn silage and the effective degradability of DM, starch and NDF, the degradation performance of feed can be evaluated quickly and effectively, which provides a reference for the nutritional value assessment of feed in dairy farm.

Key words： whole-plant corn silage; in vitro method; starch; DM; NDF; rumen degradation characteristics

Cite this article

LIU Na , BI Yanliang , DIAO Qiyu , GUO Jiangpeng , QI Zhiguo , SI Bingwen , CHENG Siyuan , TU Yan . Degradation Characteristics and Prediction Model of Dry Matter, Starch and Neutral Detergent Fiber of Whole-Pant Corn Silage in Cow Rumen[J]. Chinese Journal of Animal Nutrition, 2019 , 31(12) : 5846 -5856 . DOI: 10.3969/j.issn.1006-267x.2019.12.050

References

[1] 郭天龙,金海,薛树媛,等.羔羊精饲料在瘤胃中有机物降解率预测模型的建立[J].安徽农业科学,2015,43(36):75-77.
[2] 张婕,童津津,杨德莲,等.北京市周边地区奶牛场玉米青贮饲料瘤胃降解特性对比分析[J].动物营养学报,2018,30(2):726-733.
[3] 刘艳芳,马健,李胜利,等.5种青贮饲料在奶牛瘤胃中的淀粉降解特性[J].中国畜牧兽医,2018,45(4):925-932.
[4] 富丽霞,马涛,刁其玉,等.肉用绵羊常用精饲料的瘤胃降解特性与瘤胃非降解蛋白质体外小肠消化率的相关分析[J].动物营养学报,2018,30(7):2641-2651.
[5] 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.

[6] 王燕,辛杭书,杨方,等.不同方法测定瘤胃非降解蛋白质小肠消化率及相关性分析[J].动物营养学报,2012,24(7):1264-1273.
[7] 韩璐璐.体外模拟环境下日粮粗蛋白水平对绵羊瘤胃发酵和养分降解的影响[D].硕士学位论文.沈阳:沈阳农业大学,2016.
[8] AOAC.Official methods of analysis of AOAC international[S].16th ed.Arlington,USA:AOAC International,1995.
[9] VAN SOEST P J.Development of a comprehensive system of feed analyses and its application to forages[J].Journal of Animal Science,1967,26(1):119-128.

[10] ØRSKOV E R,MCDONALD I.The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage[J].The Journal of Agricultural Science,1979,92(2):499-503.

[11] KRIZSAN S J,AHVENJÄRVI S,VOLDEN H,et al.Estimation of rumen outflow in dairy cows fed grass silage-based diets by use of reticular sampling as an alternative to sampling from the omasal canal[J].Journal of Dairy Science,2010,93(3):1138-1147.

[12] 陈晓琳,刘志科,孙娟,等.不同牧草在肉羊瘤胃中的降解特性研究[J].草业学报,2014,23(2):268-276.
[13] 靳玲品.反刍动物常用粗饲料营养价值评定方法的比较研究[D].硕士学位论文.北京:中国农业科学院,2013.
[14] 何亭漪.不同粗饲料在绵羊瘤胃和体外降解规律的研究及代谢能数学预测模型的建立[D].硕士学位论文.呼和浩特:内蒙古农业大学,2013.
[15] 胡志勇,张甜,王金新,等.不同成熟阶段及品种对全株小麦营养成分和瘤胃降解特性的影响[J].动物营养学报,2018,30(4):1333-1343.
[16] 闫贵龙,曹春梅,刁其玉,等.不同季节对青贮窖中全株玉米青贮品质和营养价值的影响[J].畜牧兽医学报,2010,41(5):557-563.
[17] 闫峻,高玉鹏,王文杰,等.全株玉米青贮饲料在贮存期营养品质的变化规律[J].西北农林科技大学学报(自然科学版),2009,37(8):75-80.
[18] 李洋,李春雷,赵洪波,等.不同产地全株玉米青贮的瘤胃降解特性与小肠消化率的研究[J].动物营养学报,2015,27(5):1641-1649.
[19] KRIEG J,KOENZEN E,SEIFRIED N,et al.Prediction of CP and starch concentrations in ruminal in situ studies and ruminal degradation of cereal grains using NIRS[J].Animal,2018,12(3):472-480.

[20] SEIFRIED N,STEINGASS H,HOFFMANN N,et al.In situ starch and crude protein degradation in the rumen and in vitro gas production kinetics of wheat genotypes[J].Journal of Animal Physiology and Animal Nutrition,2017,101(4):779-790.

[21] NOCEK J E,TAMMINGA S.Site of digestion of starch in the gastrointestinal tract of dairy cows and its effect on milk yield and composition[J].Journal of Dairy Science,1991,74(10):3598-3629.

[22] ZHANG R Y,ZHU W Y,ZHU W,et al.Effect of dietary forage sources on rumen microbiota,rumen fermentation and biogenic amines in dairy cows[J].Journal of the Science of Food and Agriculture,2014,94(9):1886-1895.

[23] 颜欣超,宣晶晶,王立克,等.青贮时间对全株玉米常规营养成分及瘤胃降解率的影响[J].安徽科技学院学报,2018,32(2):20-25.
[24] 茹彩霞,昝林森,马陕红.模拟瘤胃条件下5种粗饲料干物质、中性洗涤纤维降解率的研究[J].中国畜牧杂志,2006,42(11):42-44.
[25] 陈晓琳.肉羊常用粗饲料营养价值和瘤胃降解特性研究[D].硕士学位论文.青岛:青岛农业大学,2014.

Options

Outlines

模态框（Modal）标题

Abstract

Cite this article

References