EFECTO DE LA INOCULACIÓN DE MICROBIOTA RUMINAL A EDADES TEMPRANAS SOBRE LA PRODUCCIÓN DE LECHE Y FERMENTACIÓN RUMINAL DURANTE LA PRIMERA LACTACIÓN
– Alejandro Belanche
ESTUDIO DE LA PRESENCIA DE ANIMALES ADULTOS CON CABRITOS DURANTE LA LACTANCIA SOBRE LA FERMENTACIÓN RUMINAL.
– Alejandro Belanche
COMUNICACIÓN ORAL: 309/15 USE OF RUMEN MICROBIOTA AS PROBIOTICS FOR WEANING OPTIMIZATION IN GOAT KIDS
A. Belanche Gracia; I. Nejjam; J. Palma; R. Serrano; E. Jiménez; A. Martín García; D. Yáñez Ruiz.
Estación Experimental del Zaidín. CSIC. Armilla. Granada. Spain.
Introduction: Young ruminants present at birth an undeveloped rumen which requires an anatomical, physiological and microbial development to fully stablish its function as a fermentation chamber. This process can be jeopardized in animals with artificial milk feeding due to the absence of a direct contact with adult animals which represent the main source of rumen microbiota. Thus, further strategies are needed to accelerate the rumen microbial development on such situations and to optimize the weaning process.
Objectives: This study investigates the use of rumen microbiota as probiotics as a strategy to accelerate the rumen development. Methods: A total of 64 new born goat kids were randomly distributed in 4 treatments (n=16): animals were orally inoculated with fresh rumen fluid from either goats fed a concentrate (CRF) or forage diet (FRF), autoclaved rumen fluid as prebiotic (PRE), or absence of inoculation as control (CTL). Inoculation was daily performed at a rate of 0.5 mL/kg body weight from birth until 12 weeks of age. Animals had free access to milk replacer, concentrate feed and hay. Rumen samples were taken at 5, 7 and 9 weeks of age being equivalent to early weaning, real weaning and post-weaning, respectively.
Results: Inoculation with fresh rumen fluid promoted an acceleration in the rumen microbial development in terms of concentration of rumen protozoa, methanogens and anaerobic fungi (P<0.05). As a result, an increase in the rumen volatile fatty acid concentration (+51%) was noted at 5 weeks. Although these differences disappeared during successive sampling times, animals inoculated with fresh rumen fluid showed increased forage intake and greater growth rate during the weaning process.
Conclusions: Inoculation of goat kids with fresh rumen fluid from adult animals can be considered as a strategy to accelerate the rumen development and to optimize weaning process in animals reared under artificial lactation.
Conflict of interest: Authors declare no conflict of interest.
Ann Nutr Metab 2018;72 (suppl 1): 1-76