Comparison of fermentation of diets of variable composition and microbial populations in the rumen of sheep and Rusitec fermenters. I. Digestibility, fermentation parameters, and microbial growth

Journal of Dairy Science
M E MartínezM D Carro

Abstract

Four ruminally and duodenally cannulated sheep and 8 Rusitec fermenters were used to determine the effects of forage to concentrate (F:C) ratio and type of forage in the diet on ruminal fermentation and microbial protein synthesis. The purpose of the study was to assess how closely fermenters can mimic the dietary differences found in vivo. The 4 experimental diets contained F:C ratios of 70:30 or 30:70 with either alfalfa hay or grass hay as the forage. Microbial growth was determined in both systems using (15)N as a microbial marker. Rusitec fermenters detected differences between diets similar to those observed in sheep by changing F:C ratio on pH; neutral detergent fiber digestibility; total volatile fatty acid concentrations; molar proportions of acetate, propionate, butyrate, isovalerate, and caproate; and amylase activity. In contrast, Rusitec fermenters did not reproduce the dietary differences found in sheep for NH(3)-N and lactate concentrations, dry matter (DM) digestibility, proportions of isobutyrate and valerate, carboxymethylcellulase and xylanase activities, and microbial growth and its efficiency. Regarding the effect of the type of forage in the diet, Rusitec fermenters detected differences between diets simil...Continue Reading

References

Sep 1, 1979·The British Journal of Nutrition·J W Czerkawski, G Breckenridge
Nov 1, 1977·The British Journal of Nutrition·J W Czerkawski, G Breckenridge
Jul 1, 1980·Journal of the Science of Food and Agriculture·P UdénP J Van Soest
Aug 1, 1996·Journal of Dairy Science·J B Russell, D B Wilson
Jan 1, 1997·Reproduction, Nutrition, Development·H ArchimèdeP Schmidely
Jan 1, 1948·The Biochemical Journal·E I McDougall
Apr 1, 2009·Animal : an International Journal of Animal Bioscience·M D CarroE Molina-Alcaide

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Citations

Jan 1, 2015·Environmental Sciences Europe·J KowalczykM Lahrssen-Wiederholt
Dec 10, 2014·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Jürgen HummelMarcus Clauss
Feb 1, 2015·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Marie T DittmannMarcus Clauss
Oct 28, 2019·Animals : an Open Access Journal From MDPI·Ana de la MonedaEduarda Molina-Alcaide
May 12, 2018·Asian-Australasian Journal of Animal Sciences·Mengjiao ChenZhaoyu Han
Dec 3, 2020·Animals : an Open Access Journal From MDPI·Jairo García-RodríguezMaría José Ranilla
Jul 3, 2021·Animals : an Open Access Journal From MDPI·Cristina Castillo, Joaquin Hernández

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