Comparison of indigestible markers from in situ and in vivo incubation to predict apparent digestibility in hay- and corn-fed horses - 10.4025/actascianimsci.v34i1.10572
| Autor: | Kátia de Oliveira, Carla Maris Machado Bittar, Ciniro Costa, Vinícius Antonio Baptista Oliveira, Janaina Carolina de Sá |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Acta Scientiarum: Animal Sciences, Vol 34, Iss 1 (2011) |
| Druh dokumentu: | article |
| ISSN: | 1806-2636 1807-8672 |
| DOI: | 10.4025/actascianimsci.v34i1.10572 |
| Popis: | Four castrated crossbred horses were used in a randomized block design to study the use of indigestible internal markers iNDF and iADF obtained in situ(from bovines) or in vivo (from equines). Treatments consisted of determining digestibility by the direct method comprising total feces collection (TC) and by the indirect method comprising internal markers iNDF and iADF obtained by in situincubation in bovine rumen or in vivo by the mobile nylon bag (MNB) technique with horses. iNDF-IV and iADF-IV resulted in better marker recovery rate (RR) (91.50%), similar to TC. The in situ technique resulted in lower RR values for the two indigestible markers, averaging 86.50% (p < 0.05). Estimates of the nutrient coefficient of digestibility (CD) were adequately predicted by iADF-IV, for horses fed on hay exclusively, with rates 46.41, 48.16, 47.92 and 45.51% for dry matter (DM), organic matter (OM), FDN and gross energy, respectively. Results show that MNB may be used to obtain iADF in horses fed on coast-cross hay exclusively, whereas NDFi and ADFi were selected for horses fed on mixed diets to predict the coefficient of nutrient digestibility |
| Databáze: | Directory of Open Access Journals |
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