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Effect of toasting grain silages from field peas(Pisum sativum)and field beans(Vicia faba)on in vitro gas production,methane production,and post-ruminal crude protein content

引用

Animal Nutrition 2020年第3期6卷 342-352页

作者： Martin Bachmann Christian Kuhnitzsch Sebastian Michel annabel thierbach Mandy Bochnia Jorg M.Greef Siriwan D.Martens Olaf Steinhofel Annette Zeyner Institute of Agricultural and Nutritional Sciences Martin Luther University Halle-WittenbergHalle(Saale)06120Germany Saxon State Office for Environment Agriculture and GeologyKollitsch04886Germany Julius Kühn Institute Federal Research Centre for Cultivated PlantsInstitute for Crop and Soil ScienceBraunschweig38116Germany

Legume grains such as field peas and field beans can be produced on a local level,and may be reliable sources of dietary protein and energy apart from common soybean and rapeseed *** ruminants,protein,starch,and carbohydrates from peas and field beans are fermented in large part before reaching the small *** objective of this study was to evaluate the effects of a combination of ensiling and hydro-thermic treatment(i.e.,toasting at 160℃for 30 min)of grains of peas and field beans on the concentrations of post-ruminal crude protein(PRCP)and rumen-undegraded protein(RUP).Moreover,24-h gas production and methane production were *** this,an in vitro batch culture system with ruminal fluid from sheep was ***-undegraded protein was determined using the Streptomyces griseus protease *** electron micrographs were used to visualize morphological changes of starch granules and their joint matrices in peas and field beans after ensiling,toasting,or a combination of *** pea grains contained crude protein(CP)at 199 g/kg DM,PRCP at 155 g/kg DM at a ruminal passage rate of 0.08/h(Kp8),RUP at 33 g/kg DM at Kp8,and starch at 530 g/kg *** field beans contained CP at 296 g/kg DM,PRCP at 212 g/kg DM at Kp8,RUP at 54 g of/kg DM at Kp8,and starch at 450 g/kg *** PRCP did not considerably differ among native and treated peas or field *** in the peas,RUP at Kp8 increased after ensiling by 10 g/kg DM(i.e.,30%;P<0.05).Toasting increased RUP(Kp8)in ensiled peas by another 28%(P<0.05).Toasting had no effect on PRCP or RUP when the peas or field beans were not ensiled *** and methane production were not affected by any treatment,and scanning electron micrographs did not reveal structural changes on the starches doubtless of any *** seemed to be more affected by treatment with ensiled+toasted peas than with ensiled+toasted field beans,but starches and other carbohydrates from both legumes remained unaffec

关键词： Legume grain silage Toasting In vitro gas production Protein evaluation Streptomyces griseus protease test

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