DefinePK

Abstract

This experiment aimed to explore the impact of increasing the amount of cassava peel in diets that had been soaked on whiting at different levels on rumen microbial biomass, protozoa populations, production of microbial protein, and in vitro nutrient digestibility. The research was arranged with a factorial pattern. There were two factors tested: the first was whiting dose and soaking time (0%, 3h; 0.25%, 3h and 0.50%, 2h), and the second was soaked cassava peel in diet (10, 20, and 30%). Diets were formulated to maintain a constant levels of protein and energy. The findings revealed that the increase of cassava peel in diets had no impact (P>0.05) on microbial biomass, protozoa populations, and microbial protein synthesis. However, soaking treatment with 0.25% whiting for 3h significantly (P<0.05) increased rumen microbial biomass. While nitrogen-free extract digestibility was only influenced by increasing cassava peel in ration. Fiber fraction digestibility was not different. In conclusion, using 30% cassava peel in the diet was safe for microbial activity and can support nutrients needed for growing rumen microbes.