Effect of different sources of organic chromium on in vitro rumen fermentation pattern

Abstract

Present study was conducted to examine the effect of different sources of organic chromium on rumen fermentation pattern in vitro using roughage based diet. Chromium picolinate, chromium polynicotinate and chromium yeast were tested at concentration of 0.5, 1.0, 1.5, 2.0 and 2.5 ppm chromium using in vitro gas production technique in wheat straw based diet. Different in vitro parameters e.g. total gas production; ammonia nitrogen (NH₃-N), in vitro dry matter digestibility (IVDMD), in vitro organic matter digestibility (IVOMD), microbial protein and partitioning factor were studied using buffalo rumen liquor. It was found all the in vitro parameters were remained similar in all the treatment groups. At 1 ppm dose level, chromium picolinate, chromium polynicotinate and chromium yeast had shown better (P>0.05) OM degradability, microbial biomass production and partitioning factor than other dose levels. It was concluded that supplementation of Cr upto 2.5 ppm from different organic sources did not adversely affect in vitro rumen fermentation parameters.