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Effects of Yeast Culture with Different Processes on Ruman Fermentation Characteristics in Dairy Cows

Jun PAN

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Abstract

Three dairy cows with permanent rumen fistula were used in a Latin square trail to study the effect of yeast culture made by solid state fermentation and liquid state submerged fermentation on the rumen fermentation characteristics. The results showed that the XP yeast culture and the yeast culture made by liquid fermentation added to the diets raised obviously the concentrations of TVFA by 3.91%, 2.12% and 3.79%(P0.05) respectively; however, the yeast culture made by solid state fermentation raised by 1.47% and 1.53%(P0.05). And every trial decreased the concentration of ammonia in rumen(P0.05). At the same time point, the cellulase activity of every trial was higher than that of the control.

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What this paper is about

Three dairy cows with permanent rumen fistula were used in a Latin square trail to study the effect of yeast culture made by solid state fermentation and liquid state submerged fermentation on the rumen fermentation characteristics. The results showed that the XP yeast culture and the yeast culture made by liquid fermentation added to the diets raised obviously the concentrations of TVFA by 3.91%, 2.12% and 3.79%(P0.05) respectively; however, the yeast culture made by solid state fermentation raised by 1.47% and 1.53%(P0.05). And every trial decreased the concentration of ammonia in rumen(P0.05). At the same time point, the cellulase activity of every trial was higher than that of the control.

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Available abstract

Three dairy cows with permanent rumen fistula were used in a Latin square trail to study the effect of yeast culture made by solid state fermentation and liquid state submerged fermentation on the rumen fermentation characteristics. The results showed that the XP yeast culture and the yeast culture made by liquid fermentation added to the diets raised obviously the concentrations of TVFA by 3.91%, 2.12% and 3.79%(P0.05) respectively; however, the yeast culture made by solid state fermentation raised by 1.47% and 1.53%(P0.05). And every trial decreased the concentration of ammonia in rumen(P0.05). At the same time point, the cellulase activity of every trial was higher than that of the control.

Key concepts: Rumen, Fermentation, Yeast, Latin square, Food science, Solid-state fermentation, Biology, Animal science

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