Abstract

Abstract Probiotics are microorganisms generally regarded as safe (GRAS) that have a beneficial effect when ingested by a host. While research on the benefits of probiotics in farm animals has mainly concentrated on major livestock species, little is documented on potential benefits in small ruminants. Probiotics in goats and sheep could offer a dual benefit of reducing pathogenic bacteria loads and resulting in improved immunity and overall health. In this study, we evaluated the effect of one-month daily commercial probiotic administration followed by weekly administration until weaning and daily administration for one week after weaning on select serum parameters, and also the prevalence of pathogenic E.coli in healthy pre-weaned goat kids beginning at two days of age. Overall, the general health of the animals in both groups remained the same throughout the study period. No significant difference in total lactic acid bacteria was detected between probiotic supplemented and control group. Probiotic administration generally improved the total serum protein and immune markers. The difference was significant after twenty-eight days of administration and two days after weaning for total serum protein and immune markers, respectively. Shiga toxin E.coli (STEC) was detected in both control and probiotic-treated goats in early life, but no significant differences were detected between treatment groups on prevalence. These results suggest that daily probiotic administration may have some health benefits in pre-weaned goats.

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