In situ Rumen Degradability, in vitro Digestibility and in vitro Gas Production of Full Fat Canola Seeds

Abstract

The objective of this study was to determine the chemical composition, in vitro gas production, in vitro digestibility and in situ rumen degradability of canola hybrids. In the study, canola seeds of four different hybrids (Bristol, Eurol, Capitol and Licrown), which were obtained from the Institute of Karadeniz Agricultural Research in Samsun, Turkiye were used. Two rains aged 2 years with permanent ruminal fistulated were used in gas production and in situ nylon bag techniques. All of the feedstuffs were incubated for 3, 6, 9, 12, 24, 48, 72 and 96 h in in vitro incubations for gas production. Feedstuffs were incubated for 48 h in nylon bag technique. The results of the present study suggested that there were no differences among the hybrids in terms of feed value. All of the hybrids had low in vitro gas production values due to their high fat contents. Licrown variety had the lowest production level up to 48 h of the incubation, but there were no differences after 24 h of the incubation (p>0.05). There were not significant differences among the hybrids in terms of estimated parameters except for gas production rate (c). The gas production rate of Licrown was significantly (p<0.05) lower than that of Bristol. While, in vitro enzyme digestibility Dry Matter Digestibility (DMD), Organic Matter Digestibility (OMD) and Metabolisable Energy (ME)) was not different among the hybrids (p>0.05), rumen degradabilities Dry Matter Degradability (DMD(48)), Organic Matter Degradability (OMD(48)) and Crude krotein Degradability (CPD(48)) were significantly different (p<0.01).