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Archivos Latinoamericanos de Produccion Animal
Asociacion Latinoamericana de Produccion Animal
ISSN: 1022-1301
EISSN: 1022-1301
Vol. 14, No. 3, 2006, pp. 78-83
Bioline Code: la06013
Full paper language: English
Document type: Research Article
Document available free of charge

Archivos Latinoamericanos de Produccion Animal, Vol. 14, No. 3, 2006, pp. 78-83

 en Comparison of the nutritive value of a native Turkish forages, tumbleweed hay ( Gundelia tournefortti L. check for this species in other resources ), wheat straw and alfalfa hay using in situ and in vitro measurements with sheep
A. Karabulut, C. Ozgur Ozkan, A. Kamalak, O. Canbolat

Abstract

Hay from native-growing tumbleweed ( Gundelia tournefortti L. check for this species in other resources ) was compared with wheat ( Triticum estivum check for this species in other resources ) straw and alfalfa ( Medicago sativa check for this species in other resources ) hay in terms of chemical composition, in situ dry matter (DM) degradation in vitro gas production and in vitro DM digestibility (IVDMD). Chemical composition of tumbleweed hay was better than wheat straw but comparable to alfalfa hay. Crude protein (CP) concentration of tumbleweed hay was higher (P<0.001) than that of wheat straw but lower than that of alfalfa hay. Crude fibre (CF) concentration of tumbleweed hay was lower (P<0.001) than that of wheat straw but similar to that of alfalfa hay. Mineral concentrations varied among forages. Tumbleweed hay was high in phosphorus (P) and iron (Fe) compared with alfalfa hay and wheat straw. The in situ DM disappearance and corresponding estimated prediction equation parameters of tumbleweed hay were higher (P<0.001) than those of wheat straw but similar to those of alfalfa hay, whereas in vitro gas production at all incubation times and corresponding estimated parameters of tumbleweed hay were higher (P<0.001) than those of alfalfa hay and wheat straw. Metabolizable energy (ME) values of the forages varied between 7.1 and 10.5 MJ/kg DM. The ME value of tumbleweed hay exceeded (P<0.001) those of alfalfa hay and wheat straw. In vitro DM digestibility (IVDMD) of tumbleweed hay was higher (P<0.001) than that wheat straw but similar to that of alfalfa. It was concluded that the nutritive value of tumbleweed hay is better than that of wheat straw and comparable to that of alfalfa hay. Within the confines of this study, tumbleweed hay seems to have potential as a forage crop for smallholder farmers during periods of forage scarcity. .

Keywords
Degradability, digestibility, forage, Gundelia, legumes, straw.

 
 es Comparação do valor nutritivo do feno duma forragem nativa, ( Gundelia tournefortti L. check for this species in other resources ), paha de trigo e feno de alfafa usando determinações in situ e in vitro com ovinos
A. Karabulut, C. Ozgur Ozkan, A. Kamalak, O. Canbolat

Resumen

Feno da planta nativa (tumbleweed) ( Gundelia tournefortti L. check for this species in other resources ) foi comparado com palha de trigo ( Triticum estivum check for this species in other resources ) e feno de alfafa ( Medicago sativa check for this species in other resources ) em relação a composição química, degradação in situ da matéria seca (MS), produção de gás in vitro e digestibilidade in vitro da MS (IVDMD). Composição química do feno de tumbleweed foi melhor que o feno de palha de trigo e comparável ao feno de alfafa. Tumbleweed apresentou teor mais elevado de proteína bruta (PB) que a palha de trigo (P<0,001) e menor que o feno de alfafa. Concentração mineral variou entre as forragens com o fósforo e o ferro sendo mais elevados no feno de tumbleweed do que nas demais forragens. Os valores de desaparecimento da MS e parâmetros estimados do feno de tumbleweed foram mais altos que os da palha de trigo, mas similares aos do feno de alfafa (P<0,001), enquanto que a produção de gás in vitro em todos os tempos de incubação e parâmetros estimados foram maiores do feno de tumbleweed que a palha de trigo e o feno de alfafa (P<0,001). Os valores de energia metabolizável (EM) das forragens variaram de entre 7,1 e 10,5 MJ/kg MS, sendo mais altos no feno de tumbleweed. Digestibilidade in vitro da MS do feno de tumbleweed foi maior que da palha de trigo e semelhante a alfafa. Concluiu-se que o feno de tumbleweed apresenta melhor valor nutritivo que a palha de trigo e semelhante ao feno de alfafa, apresentando potencial como forragem arbustiva para pequenos produtores rurais durante os períodos de escassez de forragem.

Palabras-clave
Degradabilidade, digestibilidade, forragem, Gundelia, leguminosa, palha.

 
© Copyright 2006 - ALPA. Arch. Latinoam. Prod. Anim.
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