Evaluation of ruminal degradation profiles of forages using bags made from different textiles

Revista Brasileira de Zootecnia

Tiago Neves Pereira Valente²  Edenio Detmann¹  Augusto César De Queiroz¹  Sebastião De Campos Valadares Filho¹  Daiany Iris Gomes²  Janderson Florêncio Figueiras² 

[1] ,Universidade Federal de ViçosaViçosa MG

关键词: F57;    in situ method;    non-woven textile;    nylon;   

DOI  :  10.1590/S1516-35982011001100039

来源: SciELO

【 摘 要 】

The objective of this study was to evaluate the in situ degradation profiles of dry matter (DM) and neutral detergent fiber (NDF) of different forages using nylon (50 µm), F57 (Ankom®) and non-woven textile (NWT - 100 g/m²) bags. Eight forage samples were used: sugarcane, corn silage, elephant grass cut at 50 and 250 days of regrowth, corn straw, signal grass hay, coast cross hay, and fresh alfalfa. Samples were incubated for 0, 3, 6, 12, 18, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, and 312 hours. Two bags of each textile were used at each incubation time, totaling 768 bags, using two crossbred Holstein × Zebu steers fitted with ruminal canullae. There was difference in the common rate of lag and degradation (λ) of DM for all forages, except for sugarcane. In general, higher λ estimates were obtained using nylon, followed by NWT and F57. Concerning NDF degradation profiles, differences in λ were observed for all forages. Greater estimates were obtained using nylon. Degradation profiles of DM and NDF must not be evaluated using F57 and NWT. These textiles underestimate the degradation rate due to constraints regarding exchange between bags' content and rumen environment.

【 授权许可】

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