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Compatibility of using TiOi and the faecal near-infrared reflectance spectrometry for estimation of cattle intake

文献类型: 会议论文

第一作者: Vandermeulen S.

作者: Vandermeulen S. 1 ; Decruyenaere V. 1 ; Ramirez-Restrepo C. 2 ;

作者机构: 1.Gembloux Agro-Bio Tech, Animal Science Unit, University of Liege, 2 Passage des Deportes 5-5030, Gembloux, Belgium

2.CSIRO, Animal, Food and Health Sciences, Australian Tropical Sciences and Innovation Precinct, James Cook University, Building 145, James Cook Drive, 4811 Townsville, QLD, Australia

关键词: Ruminant;titanium dioxide;faecal near-infrared spectrometry;intake;diet chemical t composition

会议名称: General Meeting of the European Grassland Federation Aberystwyth

主办单位:

页码: 625-627

摘要: Combining titanium dioxide (TiO_2) as indigestible marker to faecal near-infrared reflectance spectrometry (F-NIRS) can be used to determine cattle feed intake and quality of ingested forage if F-NIRS spectra are not modified by the marker. This studyaimed at determining the compatibility of TiO_2 with F-NIRS. Three dry cows were fed a standard hay-based diet for three weeks supplemented with a daily dose of 0.1% (10g) TiO_2 during the last two weeks of the experiment. Faeces samples were collectedevery day and analysed for TiO_2 and F-NIRS. ( Results suggest that TiOi did not interfere with F-NIRS analyses. The calculations of crude 1 protein, NDF, ADL contents, as well as dry matter intake did not change over time with increasing TiO_2 in the faeces (R > 0.05). Slight differences observed for other predicted [ parameters seemed to be independent from TiOi. The higher Mahalanobis distance (B) for r chemical composition (H = 7.2) independent from TiOi inclusion could indicate that faecal f spectra did not correspond exactly to the prediction database. Although 0.1% incorporation of I TiO_2 seem not to interfere with F-NIRS measurements, caution must be taken with higher levels I of TiO_2 as nothing indicates that interference could not appear.

分类号: S812-532

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