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The physical form of the ration as it affects the concentration of volatile fatty acids and hydrogen ions ph in the rumen of stara zagora lambs 1



The physical form of the ration as it affects the concentration of volatile fatty acids and hydrogen ions ph in the rumen of stara zagora lambs 1



Zhivotnov"dni Nauki 19(1): 84-90



Experiments were carried out with 2, 3, 5 and 7 mo. old lambs to establish the effect of the physical form of the ration upon volatile fatty acids; and pH in the rumen. Two and one-half hours after feeding, the total quantity of volatile fatty acids in the rumen increased slightly when the ration was given in the form of granules and had a higher increase when the ration was given in bulk or in the form of hay and concentrated mixture. The physical form of ration influences the ratio between the volatile fatty acids in the rumen. When 2, 3 and 5 mo. old lambs were fed the granulated ration, the quantity of acetic acid in the rumen increased. The rumen content pH was also affected by the form of ration. The values of pH were lowest when lambs were fed the granulated ration, from 5.05 .+-. 0.08-5.50 .+-. 0.13 and highest when lambs were fed the concentrated mixture plus alfalfa hay, from 5.11 .+-. 0.09-6.23 .+-. 0.03.

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