Effect of graded levels of Coriander (Coriander sativum L.) straw powder inclusion on Wheat straw fermentation and gas production characteristics in-vitro

Influence of Coriander straw powder inclusion on wheat straw fermentation and gas production characteristics were studied. It was hypothesized that straw of Coriander may have bioactive metabolites, which can manipulate fermentation under rumen ecosystem. Coriander straw contained CP (7.43%), NDF (73.18%), ADF (56.54%), cellulose (48.0%) and lignin (8.77%) in DM. This bioresource also had 4.28 g total phenol and 0.131 g condensed tannins in each kg dry matter. The metabolizable energy (ME) content was 6.64 MJ/kg DM. The inclusion of graded levels of Coriander straw powder (0, 10, 20, 30, 40 and 50 mg/200 mg substrate) did not change in-vitro fermentation of wheat straw. The production of gas (ml/200 mg substrate, m mol/g DM incubated and mmol/g DM fermented) remained unchanged. Inclusion of Coriander straw linearly (p=0.077) reduced NDF digestibility coefficient. Therefore, Coriander straw did not contain active secondary metabolites to a level that may affect fermentation potential or microbial fermentability of wheat straw, when added up to 25 % as substrate.