Produção de leite em vacas holandesas suplementadas com óleos funcionais

Abstract

Milk production has increased significantly in recent years, especially when it comes to quality and good animal performance. The Dutch breed shows superiority in production when it comes to liters / year / cow, however it presents low total solids contents. The objective of this study was to improve the physical-chemical quality of the milk by adding functional oils in the diet of 21 lactating Holstein cows, which were between 30 and 120 days of lactation, maintained on pasture and supplemented. The experiment was carried out in the city of Dois Vizinhos, Paraná, Bairro da Luz, in Chácara Chioca. The product used was the functional element containing spirulina, besides cashew and castor oils, provided by the company Natupremix[marca registrada], establishing three types of treatments: control without oil inclusion; 10 grams cow / day and 15 grams of cow oil / day, which aimed to test the levels of addition of the oil in their diet, and evaluating milk production, somatic cell count and the physico-chemical composition of milk (Fat, protein, lactose, urea and density). Milk analyzes of each treatment were compared at the beginning, middle and end of the experiment for 60 days. The silage and feed were collected at the beginning of the experiment in a similar way to oat pasture, using the direct square sampling method of 0.25m2 and for an effect of bromatological analyzes of dry matter, organic matter, crude protein and detergent fiber Grassland neutral The results were analyzed in the analysis of variance, in which the result was not significant (P> 0.05) for inclusion levels of Functional oil. Based on these data, they were presented showing the factors that may have influenced this experiment, since genetics, sanity and environmental factors correlate with the data, and the functional functions up to 15 g / day / lactating animal did not present differences in the Chemical analysis of milk or production.