Abstract :
The aim of this study was to determine the effects of polyethylen glycol on in vitro gas production and in vitro gas production kinetics of some canola hybrids and canola meals. In this study, four canola hybrids (Bristol, Eurol, Capitol and Licrown) and canola meals purchased from market were used. Two rams (SakızxKarayaka) aged 4 with ruminal cannulas were used in gas production technique. All of the feedstuffs were incubated for 3, 6, 9, 12, 24, 48, 72 and 96 hours. All canola varieties had lover gas production levels except for canola meals. The effects of PEG supplement on in vitro gas production, a (the gas production from the immediately soluble fraction), b (the gas production from the insoluble fraction) and c (gas production rate) of all canola hybrids and canola meals for 3, 6, 9, 12 ,24 and 48 hour incubations were not significant (P 0.05). However, PEG supplementation decreased total gas production (a+b) and in vitro gas production for 72 and 96 hour incubations in Bristol hybrid (P 0.01). Besides, PEG supplemention increased in vitro gas production for 72 hour incubation in Capitol hybrid (P 0.01). In conclusion, PEG supplementation affected in vitro gas productions for 72 and 96 hours incubations and total gas production (a+b) for all the feeds used in this study (P 0.01). PEG addition could not show its effect due to the lower TMP contents in canola hybrids and canola meals used in this study. In vivo experiments should be carried out with feeds rich in tannin by using most appropriate PEG 6000 level.
NaturalLanguageKeyword :
Canola , canola meal , in vitro gas production , hybrid , polyethylene glycol
