Efecto de la levadura Saccharomyces cerevisiae en condición corporal, alzada, ganancia diaria de peso, parámetros hematológicos y metabólicos con terneros de remplazo criados al pastoreo en la Hacienda Nero

Abstract

In this research, the effects caused by adding a Saccharomyces cerevisiae yeast, to the diet of calves is investigated. The parameters considered were the body condition (BC), raise, daily weight gain (DWG), and hematological and metabolic parameters. The study was conducted in the University of Cuenca’s farm (Nero), using 18 Holstein Friesian calves from 4 - 6 months old, 100 - 200 kg weight, farmed on pasture and with all animals having the same nutritional supplement. The study divided the calves in two groups: group T1 with 9 calves, fed based on a normal basal diet and group T2 (experimental group) with 9 calves as well, however adding to the normal diet 15 g / calf / day of yeast. Moreover, for the selection of the calves, a randomized-block procedure was fallowed. The results were analyzed using the software SPSS. The BC and blood parameters were measured in five occasions. The results of the DWG and raise were analyzed using statistical tests: Shapiro - Wilk and Levene at 5%, and showed no statistical difference after applying ADEVA. The BC variable and the hematological parameters showed a significant statistical difference (p<0.05). Finally, regarding the financial expenses, it was found that the control group had a lower cost per Kg ($ 0.84) than the experimental group ($ 0.96). In conclusion, it is stressed that adding the proposed yeast (Saccharomyces cerevisiae) as a nutritional supplement for bred calves, can represent an alternative to improve the health parameters related with glucose and body condition