Urea and salt as supplementary diet for crossbreed milk cows

César Roberto  Viana Teixeira; Rogério  de Paula Lana; Luciana  Navajas Rennó; Cristina  Mattos Veloso; Juliana  do Carmo Carvalho; André  Azevedo de Menezes

Urea and salt as supplementary diet for crossbreed milk cows

Autores

César Roberto Viana Teixeira

Rogério de Paula Lana

Luciana Navajas Rennó

Cristina Mattos Veloso

Juliana do Carmo Carvalho

André Azevedo de Menezes

Editor

Universidade Estadual de Maringá

Descripción

This study aimed to evaluate the use of suppl ementary feed with di fferent percentages of urea and mineral salt for crossbred milk cows. Ten an imals were used, mean body weight 480 kg ± 9,7, distributed in a 5 x 5 double Latin square, with treatm ents of supplements with different urea and mineral salt percentages, namely, 10:10; 10:20; 20:10 and 20:20, completed to 100% with corn meal. Data underwent statistical analysis by SAS at 0.05 sign ificance level. The use of supplements increased (p < 0.05) the total dry matter (DM) intake of diet. The increase in the level of urea in the supplement decreased DM intake of supplement. The use of supplements increased (p < 0.05) DM digestibility. The treatments with presence of supplement showed hi gher (p < 0.05) milk production. Supplemented diets may be used to correct nutritional deficiencies of sugar cane, with higher intake, digestibility and milk production. Treatments with 20% urea in the co mposition of the supplement caused a lower DM consumption with the same performance in the anim als. The above-mentioned treatments had the best efficiency.