Effects of diets with increasing levels of sugar cane in substitution of corn silage on rumen population ciliate protozoa in sheep

[摘要] - Eight rumen fistulated rams were delineated in two Latin Squares in four periods of 35 days each and four treatments consisted of increasing levels of sugar cane (SC) in substitution to the corn silage (CS): A) 100% CS, B) 67% CS and 33% SC, C) 33% CS and 67% SC and D) 100% SC, to evaluate the population of ciliate protozoa in the rumen. The total concentrations of rumen ciliate protozoa and of Entodinium decreased and the values of pH of the ruminal content increased linearly as dietary sugar cane levels increased. No differences between treatments were observed for the rumen volume and the rumen liquid turnover rate.

[学科分类] 兽医学

[关键词] sugar cane;sheep;rumen protozoa     IntroduçãoOs ciliados do rúmen participam com mais de 40% do nitrogênio microbiano total do conteúdo do órgão e mais de 60% dos produtos de fermentação microbiana (HUNGATE;1966)