Utilización de concentrados con bajo contenido en cereales en la alimentación del ganado ovino
- M.L. Tejido 1
- M.J. Ranilla 1
- M.D. Carro 2
- 1 Departamento de Producción Animal, Universidad de León,
- 2 Instituto de Ganadería de Montaña (CSIC-ULE), León
- Luis Rodríguez Ruiz (coord.)
- Juan Antonio Olmedo Olmedo (coord.)
- Sara Olmedo de la Cruz (coord.)
- Luis Fernando de la Fuente Crespo (coord.)
- Ana Belén Martín Diana (coord.)
- María Cristina León Cofreces (coord.)
- Elena Ordás Alesanco (coord.)
- Mariano Herrera García (dir. congr.)
Publisher: Instituto Tecnológico Agrario de Castilla y León ; Junta de Castilla y León
ISBN: 978-84-938243-0-3
Year of publication: 2010
Pages: 272-276
Congress: Sociedad Española de Ovinotecnia y Caprinotecnia (SEOC). Jornadas (35. 2010. Valladolid)
Type: Conference paper
Abstract
Six ruminally and duodenally cannulated sheep were used in a partially replicated 4 x 4 Latin squareto evaluate the effects of forage to concentrate ratio (F:C) and type of forage on diet digestibility, ruminalfermentation, microbial protein synthesis and N balance. The experimental diets had F:C of either70:30 (FA) or 30:70 (CA) with alfalfa hay or grass hay as forage. CA diets resulted in greater(P<0.001) total tract apparent organic matter digestibility compared with FA diets, but in lower(P=0.02) acid detergent fibre digestibility. Compared with sheep fed FA diets, sheep receiving CA dietshad lower (P<0.001) ruminal pH values and greater ammonia-N concentrations (P<0.001). RetainedN ranged from 29 to 39% of N intake and was not affected by F:C (P=0.62) or the type of forage(P=0.31). Microbial N synthesis and its efficiency were greater (P≤0.001) for CA diets compared with FAdiets. The results indicate that concentrates with low cereal content can be included in the diet ofsheep up to 70% of the diet without detrimental effects on ruminal activity, microbial synthesis efficiency,and N losses