Study on the effects of dietary supplementation of inactive dry yeast (Saccharomyces cerevisiae) on feed intake, body weight gain and fecal microbiota of crossbreds steers

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Research Paper 01/04/2017
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Study on the effects of dietary supplementation of inactive dry yeast (Saccharomyces cerevisiae) on feed intake, body weight gain and fecal microbiota of crossbreds steers

Kamran Ali, Ihsan Ullah, Hayaz Uddin, Shakira Ghazanfar, Mustansar Ali Ghazanfar
Int. J. Biosci.10( 4), 288-294, April 2017.
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Livestock industry is showing great interest in the use of feed supplements for improving performance of the farm animal. The objective of this research study was to determine the effect of inactive dry yeast (Saccharomyces cerevisiae) on feed intake, average daily weight gain, feed conversion ratio (FCR) and fecal microbiota of crossbreds steers. For this purpose, twelve male steers of cross breed (135±5 kg and 14 to16 months of age) were randomly divided into three equal groups (four animals in each group). In group 1(A-0) steers were fed control diet, group II (B-10) cows were fed control diet plus commercially available yeast at the rate of 10g/d/animal while group III (C-20) steers were fed control diet plus commercially available yeast at the rate of 20g/d/animal. Results showed that feed intake, total weight gain, average daily gain and FCR were significantly (P<0.05) higher in group III as compared to other groups. On the other hand body condition scores were not significantly (P>0.05) effective by yeast supplementation. The outcomes of fecal microbiota study showed that the average fecal population of Lactobacillus (CFU/g) was significantly (P<0.05) higher, while Coliform (CFU/g) was significantly (P<0.05) lower with in group III than in other groups which leads to improved gut health. These results concluded that dietary supplementation of inactive dry yeast has an enhancing effect on growth performance and gut health in the crossbred steers without any adverse effects.


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