an investigation of the effect of some medicinal plants on in vitro ruminal fermentation parameters

the aim of the current study was the screening the activity of 23 medicinal plants for decreasing the in vitro ruminal methane production, as well to and assess sheep ruminal in vitro fermentation parameters. 57.3 mg of each medicinal plants along with 142.7 mg control diet were weighted in 120 ml wheatons in 4 replicates. the samples were incubated using ruminal fluid obtained from 3 castrated male ghezel sheep with 61.8 kg of body weight and 4 years of age. after 24 h of incubation, total gas production (gp), methane production, ammonia content as well as volatile fatty acids (vfa) were assessed. the obtained data were statistically analyzed using a completely randomized design. the results showed that gp from the incubation of allium hertifolium, tribulus terrestris l and foetida ferula-assa increased in comparison with the control treatment (p