Título

Effect of an Exogenous Phytase on Growth Performance in Growing Holstein Calves

Autor

GERMAN BUENDIA RODRIGUEZ

SERGIO SEGUNDO GONZALEZ MUÑOZ

NORA IDOLINA ORTEGA ALVAREZ

Patricia Aceves

MARIA TERESA DEL SOCORRO MONTOYA FLORES

Isaac Almaraz-Buendía

JOSE ARMANDO PARTIDA DE LA PEÑA

Abdelfattah Zeidan Mohamed Salem

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Materias

Calves Growth Holstein Phytase CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA - (CTI)

Resumen o descripción

The aim of this study was to evaluate the effect on the productive performance, apparent digestibility of DM, serum phosphorus and phosphorus balance in Holstein calves which received a high concentrate diet with different doses of exogenous phytase for a period of 60d. The experiment was conducted with a completely randomized design with three treatments of eight calves each, the treatment included dietary supplementation of exogenous phytase at 0, 12 and 24 g/ton. Phytase inclusion increased (P<0.05) average daily gain when phytase was supplemented at 24 (850g) as compared to 0 (816g) or 12 (809g) g/ton. However, it had no effect (P>0.05) on DM intake, feed conversion and DM digestibility. Adding phytase in the diet decreased phosphorus excretion in faeces (P<0.05) showing a significant linear increase with increasing level of supplementation (the values being 9.96, 9.14 and 8.13 g/d) which, in turn, increased the P retention (4.69, 5.37 and 6.45 g/d, resectively, for the three groups). In conclusion, supplementation of phytase could improve the growth performance of calves without any discernible effects on feed intake or digestibility of nutrients.

Editor

Animal Nutrition and Feed Technology

Fecha de publicación

2014

Tipo de publicación

Artículo

Recurso de información

http://hdl.handle.net/20.500.11799/66149

Idioma

Inglés

Audiencia

Estudiantes

Investigadores

Repositorio Orígen

REPOSITORIO INSTITUCIONAL DE LA UAEM

Descargas

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