ABSTRACT
This experiment was conducted to demonstrate effect of adding sunflower oil (SFO) or Yellow
corn oil (YCO), at levels 0, 2 and 4% of concentrate dry matter, using in vitro gas production
technique. , Oil free treatments were significantly (p<0.05) superior in total and methane gas
production at incubation times 9, 18, 24, 48and 72 hrs compared with oil containing treatments,
Except a significant increase in methane production at incubation time 24 hrs for 2% sunflower oil
treatment .
Based on volume of total gas produced after 24 hrs of incubation, it was observed that oil free
treatments was significantly (p<0.05) superior in net energy of milk production, in vitro organic
matter digestibility, metabolizable energy and short chain fatty acids. It concluded that adding
vegetable oils to ruminant rations reduce total gas and methane production which reflect on
Increasing feed nutritional value such as in vitro organic matter digestibility and metabolizable
energy.