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Potential use of Spartina alterniflora as forage for dairy cattle

文献类型： 外文期刊

作者： Qin, Fengfei 1 ; Tang, Boping 3 ; Zhang, Huanshi 4 ; Shi, Chuanyan 1 ; Zhou, Wenzong 5 ; Ding, Liren 2 ; Qin, Pei 1 ;

作者机构： 1.Nanjing Univ, Halophyte Res Lab, Nanjing 210093, Jiangsu, Peoples R China

2.Nanjing Agr Univ, Coll Prataculture Sci, Nanjing 210095, Jiangsu, Peoples R China

3.Yancheng Teachers Univ, Jiangsu Key Lab Bioresources Saline Soils, Yancheng 224002, Peoples R China

4.Nanjing Inst Comprehens Utilizat Wild Plants, Nanjing 210042, Jiangsu, Peoples R China

5.Shanghai Acad Agr Sci, Inst ECOenvironm & Plant Protect, Shanghai 201403, Peoples R China

关键词： Spartina alterniflora;Maturity stage;Dairy cattle;Feed and water intake;Ruminal fermentation

期刊名称：ECOLOGICAL ENGINEERING （ 影响因子：4.035； 五年影响因子：4.611 ）

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收录情况： SCI

摘要： This study evaluates the potential use of halophyte Spartina alterniflora (SA) as forage for ruminants by detecting the effect of plant maturity on organic and mineral compositions as well as the effect of increasing dietary inclusion of S. alterniflora on rumen fermentation in dairy cattle. Crude protein (CP), ash content, and in vitro dry matter (DM) digestion of S. alterniflora exhibited a negative correlation with increasing maturity; however, biomass, DM, neutral detergent fiber (NDF) content, and acid detergent fiber (ADF) content showed a positive correlation. Mineral composition drastically changed with increasing plant maturity. Compared with conventional diets, S. alterniflora mixed diets showed higher ash, NDF, ADF, ether extract, and Na, Ca, and P contents, and similar organic matter (OM), CP, and gross energy contents. DM and water intake of dairy cattle linearly increased from 0% to 25% SA in the diet. The mean values of the concentration of total volatile fatty acids (TVFA); the molar percentage of acetate, propionate, butyrate, and isobutyrate; and the acetate-to-propionate ratio did not significantly change at 12:00 h with increasing inclusion level of S. alterniflora in the diet. The initial findings obtained from the feed and rumen fermentation analysis of dairy cattle demonstrate that S. alterniflora can be utilized as potential forage for dairy cattle at less than 25% of the animal's diet. Overall, S. alterniflora could be provided with the potential to improve the sustainability of ruminant production as alternative feeds to replace partially common roughages, alleviate feeding cost and partially control the rapid spread of the invasive plant in salt marsh of China. (C) 2016 Elsevier B.V. All rights reserved.

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