Efecto de la adición de la Zeolita en la dieta basal durante el periodo de preparto y posparto sobre la calidad y producción de la leche en vacas al pastoreo

Abstract

The objective of the present research was to evaluate the effect of Zeolite (Clinoptilolite) added in the basal diet of dairy cows grazing for 75 days, ≥ 15 days prepartum and 60 days postpartum and its influence on the Production and Quality of milk (Lipids, Protein, Total Solids, pH), Mammary Gland Health (Somatic Cell Count) and Body Condition (CC). For this investigation 80 crossbred Holstein Friesian cows were used, with a body condition ≥ 3.0 - 3.5 between 2 or more calvings, clinically healthy. The animals were randomly divided into two groups: Balanced Group: (GB = 40) + Zeolite Group (GZ = 40). The Zeolite Group (≥ 30 days prepartum) were fed a basal diet + 0.56% Zeolite (Clinoptilolite) based on 2% dry matter consumption (CMS). In the postpartum period, the Zeolite Group were fed a basal diet + 1.48% Zeolite based on 3% of dry matter consumption (CMS). The results obtained were analyzed in two stages, year 1 and year 2, and separated into two groups 30 days postpartum and 60 days postpartum for their analysis. The results showed that there was no significant difference in the body condition, in the same way it happened with the quality of the milk that the results did not differ in its components (Protein, Fat and Total Solids) happening in the same way with the Somatic Cell Count, Milk pH and Density that did not differ in their values. Milk production kg / cow / day / year the results indicate that there were significant differences, indicating its positive effect of zeolite on milk production. In this way it is concluded that the addition of Zeolite at 0.56% LW / DM ≥ 30 days before calving and 1.48% LW / DM 60 days after calving added daily in the basal diet of dairy cattle, showing that the Clinoptilolite helped maintain normal values of milk quality as well as body condition and increased the level of milk production, being recommended for daily use in dairy cattle feeding.