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Zootecnia Tropical
Instituto Nacional de Investigaciones Agrícolas Venezuela
ISSN: 0798-7269
Vol. 26, No. 3, 2008, pp. 191-196 		Bioline Code: zt08026
Full paper language: Spanish
Document type: Research Article
Document available free of charge

Zootecnia Tropical, Vol. 26, No. 3, 2008, pp. 191-196

 en Acceptability of tropical tree fodder by cattle, sheep and goats in Trujillo state, Venezuela
Danny E. García; María G. Medina; Luis J. Cova; Mildrey Soca; Duquesne, Pedro; Pablo Pizzani; Alfredo Baldizán & Carlos E. Domínguez

Abstract

Preference by cattle, sheep and goats for twelve foliage species ( Chlorophora tinctoria check for this species in other resources , Morus alba check for this species in other resources , Pithecellobium pedicellare check for this species in other resources , Gliricidia sepium check for this species in other resources , Guazuma ulmifolia check for this species in other resources , Cordia alba check for this species in other resources , Trichantera gigantea check for this species in other resources , Tithonia diversifolia check for this species in other resources , Leucaena leucocephala check for this species in other resources , Moringa oleifera check for this species in other resources , Azadirachta indica check for this species in other resources , and Samanea saman check for this species in other resources ) in Trujillo state, Venezuela were evaluated. Chemical composition (CP, GE, NDF, total polyphenols, condensed tannins, tannins precipitating proteins, and total terpenoids), ruminal degradability, and intake measurements were determined using a latin square design with evaluation period of twelve days. The preferences of cattle with sheep and sheep with goats were related. No relationships of cattle and sheep intake with chemical composition of the offer were found. However, significant differences in the majority of nutritional variable were observed. Goats preferred the foliage with smaller NDF content and low total polyphenols concentration. C. tinctoria, M. alba and P. pedicellare, followed by G. ulmifolia and C. alba foliage presented the best potentialities. The results showed the importance of preference assay for the selection of species with fodder potential for ruminant production systems.

Keywords
Preference, intake, ruminants, secondary metabolites, nutritive quality

 
 es Aceptabilidad de follajes arbóreos tropicales por vacunos, ovinos y caprinos en el estado Trujillo, Venezuela
Danny E. García; María G. Medina; Luis J. Cova; Mildrey Soca; Duquesne, Pedro; Pablo Pizzani; Alfredo Baldizán & Carlos E. Domínguez

Resumen

Se evaluó la preferencia de bovinos, ovinos y caprinos por el follaje de doce especies en el estado Trujillo, Venezuela ( Chlorophora tinctoria check for this species in other resources , Morus alba check for this species in other resources , Pithecellobium pedicellare check for this species in other resources , Gliricidia sepium check for this species in other resources , Guazuma ulmifolia check for this species in other resources , Cordia alba check for this species in other resources , Trichantera gigantea check for this species in other resources , Tithonia diversifolia check for this species in other resources , Leucaena leucocephala check for this species in other resources , Moringa oleifera check for this species in other resources , Azadirachta indica check for this species in other resources , and Samanea saman check for this species in other resources ). Se determinó la composición química (PC, EB, FDN, polifenoles totales, taninos condensados, taninos que precipitan proteínas y terpenoides totales), se estimó la degradabilidad ruminal in situ y se realizaron mediciones del consumo mediante un diseño experimental cuadrado latino con periodo de evaluación de doce días. La preferencia de los ovinos con vacunos y caprinos con ovinos presentaron relaciones significativas. La aceptabilidad de vacunos y ovino no se encontró relacionada con la composición química de la oferta, aun cuando se observaron diferencias significativas en la mayoría de las variables nutricionales cuantificadas. Las cabras prefirieron los follajes con menor contenido de FDN y concentraciones bajas de polifenoles totales. Los follajes de C. tinctoria, M. alba y P. pedicellare, seguido por G. ulmifolia y C. alba presentaron las mayores potencialidades. Los resultados demuestran la importancia de realizar ensayos de preferencia para la selección de especies con potencial forrajero para sistemas de producción con rumiantes.

Palabras-clave
Preferencia, consumo, rumiantes, metabolitos secundarios, calidad nutritiva

 
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