Resumo

NUNEZ-TORRES, Oscar Patricio et al. Productive behavior and milk quality in cattle (Bos taurus) using a natural probiotic. J.Selva Andina Anim. Sci. [online]. 2017, vol.4, n.2, pp.128-136. ISSN 2311-3766.

The research evaluated the productive behavior of cattle (Bos taurus), due to the addition of the natural probiotic in the feed, which were compared with a control treatment, distributed in a Completely Random Design, evaluating different productive variables during 62 days of dosing. The animals were fed: T_S: forage (ray grass) 13 kg MS, concentrate 5 kg as base diet, T₁: diet basis plus 25 g natural probiotic, T₂: diet basis plus 50 g natural probiotic, T₃: diet based plus 75 g natural probiotic, T₄: diet based plus 100 g natural probiotic. The pasture administered was 15 kg DM / cow / day and the nutrient quality of the pasture was 26.1% PC, 1.50 NTL Mcal / Kg, 36.4% NDF, 36.4 Mcal / Kg ENM, with respect to the concentrate was offered 5 kg whose nutritive quality was 13.1% PC, 1.72 Mcal / Kg, 13% FDN, 7.7% FDA. The best milk production (P <0.05) was determined with 26.76±0.80L of milk / cow / day for T₄ and TS of 24.03±0.72 L of milk / cow / day. Analyzing the quality of the milk, fat, protein, solids, lactose, density, salt and pH did not show significant difference in all treatments with p˃0.05, T₄ presented a minimum cost of production of 0.26 dollars/L. In conclusion an excellent yield and minimum cost of milk production was with 100 g of natural probiotic in bovine feed (Bos taurus). It is recommended to transfer the results obtained at the level of dairy farms, in order to use additives that allow to obtain greater production of milk and of optimal quality.

Palavras-chave : Natural probiotic; milk quality; milk production.

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