Síntese de de proteína microbiana e balanço de nitrogênio em novilhas leiteiras suplementadas com ácido ricinoleico e líquido da casca da castanha do caju

Abstract

The objective of this work was to evaluate the effects of the inclusion of functional oils on Jersey heifers on microbial protein synthesis and nitrogen balance. Eight heifers with a mean age of 12 ± 1.5 months were used, with a mean weight of 286.75 ± 34.61 kg. The animals were randomly divided into 2 4x4, balanced and contemporary Latin squares in a 2x2 factorial arrangement. The experimental period was 19 days, 14 days for the adaptation of experimental diets and 5 for data collection. The experimental diets were: control (CON), ricinoleic acid (AR) net of cashew nuts (LCC), AR + LCC (inclusion of Ricinoleic Acid + Cashew Nuts). The inclusion and interaction between them microbial nitrogen and the synthesized microbial protein (g / day) were lower with the addition of ricinoleic acid and cashew nutshell liquid (RA + LCC) in the diet of heifers compared to other diets offered separately.