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Investigation between Different Amount of Crude Fiber and Fermentation in the Rumen by Beef Suckler Cows

Journal of Agricultural Science and Technology(A) 2020年第3期10卷 159-164页

作者： heiko scholz Petra Kuhne Rudolf Staufenbiel Anja West Gerd Heckenberger The Department of Agriculture Oecotrophology and Rural DevelopmentAnhalt University of Applied SciencesBernburg 06406Germany The Department of Veterinary Medicine Freie UniversitätBerlin 14163Germany The Department of Animal Husbandry and Breeding State Institute of Agriculture and HorticultureIden 39606Germany

Body condition of suckler cows at the time of calving has an important effect on calving ease and mortality of *** the last eight weeks before calving the body condition should be reduced or at least not *** with a higher amount of crude fibre can be used(rations with straw or late mowed grass silage(GS))to control the body condition *** suckler cows(Charolais)were feeding a total mixed ration(TMR)in the last eight weeks before calving and GS after *** the addition of straw(30%in TMR1 vs 60%in TMR2 of dry matter)was varied the amount of crude fibre in the TMR(GS,straw,mineral)before *** the period after calving were GS *** measurement took place on the pasture(PS).Rumen fluid,plasma,body weight and back fat thickness were *** fluid pH was assessed immediately after collection using an electronic pH *** fatty acids(VFA),sedimentation,methylene-blue and amount of infusorians were *** four key figures an“index of rumen fermentation”(IRF)in the rumen was *** analysis took place with analysis of variance(ANOVA)with fixed effects of treatment(TMR1,TMR2,GS and PS)and number of lactations(3-7 lactations)using SPSS Version 25.0 for *** fluid pH had significant differences between variants(TMR1 by 6.6,TMR2 by 6.9,GS by 6.6 and PS by 6.9),but was not affected by other *** IRF showed a disturbed fermentation in the rumen by feeding the TMR 1+2 with high amount of crude fibre(score:>10.0 points)and a very good situation for fermentation during grazing the PS(score:6.9 points).The long-term use of crude fibre-rich rations in the period before calving may cause deviations from undisturbed fermentation in the rumen and adversely affect the utilization of the feed in the rumen.

关键词： Suckler cow crude fibre rumen fermentation body condition score calving period

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