Evaluation of methods for the quantification of ether extract contents in forage and cattle feces



Document title: Evaluation of methods for the quantification of ether extract contents in forage and cattle feces
Journal: Anais da Academia Brasileira de Ciencias
Database: PERIÓDICA
System number: 000409063
ISSN: 0001-3765
Authors: 1
1
1
2
3
4
1
Institutions: 1Universidade Federal de Vicosa, Departamento de Zootecnia, Vicosa, Minas Gerais. Brasil
2Universidade Federal de Vicosa, Departamento de Biologia Vegetal, Vicosa, Minas Gerais. Brasil
3Swedish University of Agricultural Sciences, Department of Agricultural Research of Northern Sweden, Umea, Vasterbotten. Suecia
4Universidade Federal de Mato Grosso, Instituto de Ciencias Agrarias e Ambientais, Sinop, Mato Grosso. Brasil
Year:
Season: Jun
Volumen: 89
Number: 2
Pages: 1295-1304
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract The objective of this study was to compare the estimates of ether extract (EE) contents obtained by the Randall method and by the high-temperature method of the American Oil Chemist's Society (AOCS; Am 5-04) in forages (n = 20) and cattle feces (n = 15). The EE contents were quantified by using the Randall extraction or AOCS method and XT4 filter bags or cartridges made of qualitative filter paper (80 g/m²) as containers for the samples. It was also evaluated the loss of particles, and concentration of residual chlorophyll after extraction and the recovery of protein and minerals in the material subjected to extraction. Significant interaction was observed between extraction method and material for EE contents. The EE estimates using the AOCS method were higher, mainly in forages. No loss of particles was observed with different containers. The chlorophyll contents in the residues of cattle feces were not affected by the extraction method; however, residual chlorophyll was lower using the AOCS method in forages. There was complete recovery of the protein and ash after extraction. The results suggest that AOCS method produces higher estimates of EE contents in forages and cattle feces, possibly by providing greater extraction of non-fatty EE
Disciplines: Agrociencias,
Medicina veterinaria y zootecnia
Keyword: Nutrición animal,
Forraje,
Ganado,
Análisis bromatológico,
Grasa
Keyword: Agricultural sciences,
Veterinary medicine and animal husbandry,
Animal nutrition,
Forage,
Livestock,
Bromatological analysis,
Fat
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