Nutritional diversity of agricultural and agro-industrial by-products for ruminant feeding
| Autor: | J.A.G. Azevêdo, S.C. Valadares Filho, D.S. Pina, E. Detmann, L.G.R. Pereira, R.F.D. Valadares, H.J. Fernandes, L.F. Costa e Silva, P.B. Benedeti |
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| Jazyk: | English<br />Portuguese |
| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Vol 64, Iss 5, Pp 1246-1255 (2012) |
| Druh dokumentu: | article |
| ISSN: | 1678-4162 0102-0935 |
| DOI: | 10.1590/S0102-09352012000500024 |
| Popis: | Fifty-seven by-products were collected from regions throughout Brazil. Chemical composition, in vitro neutral detergent fiber digestibility (IVNDFD), and total digestible nutrients (TDN) were determined with the objective of grouping by-products with similar nutritional characteristics. The by-products belonging to group one (G1) presented the highest content of neutral detergent fiber exclusive of ash and nitrogenous compounds [aNDFom(n)] and lowest energy content, with 42.5% and 38.8% of IVNDFD and TDN, respectively. A new cluster analysis was carried in order to better characterize G2 by-products, six subgroups (SGs) were established (SG1 to SG6). SG1 by-products had the highest and the lowest values for lignin and TDN, respectively. SG2 by-products had the highest aNDFom(n) value, with TDN and IVNDFD values greater than 600 and 700g/kg, respectively, and crude protein (CP) value below 200g/kg in dry matter (DM). Among all the subgroups, SG3 had the highest TDN (772g/kg) and IVNDFD (934g/kg) values and the lowest lignin (23g/kg in DM) value. The ether extract was what most influenced the hierarchical establishment of residual grouping in SG4. SG5 by-products had the highest concentration of non-fibrous carbohydrate. Different from the other subgroups, SG6 by-products had the highest value of available CP. |
| Databáze: | Directory of Open Access Journals |
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