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Online Journal of Veterinary Research©
Volume 22 (8):721-726, 2018.
Effect of Saccharomyces cerevisiae with or without probiotic on rumen fluid pH,
protozoa, bacteria, volatile fatty acids and ammonia in ram lambs.
Hayder R Abed PhD., Drgham H AL-Zwean PhD.
1Departments of Veterinary Public Health, College(s) of Veterinary Medicine, 2Kufa University Baghdad University
Abed HR, AL-Zwean DH., Effect of Saccharomyces cerevisiae with or without probiotic on rumen fluid pH, protozoa, bacteria, volatile fatty acids and ammonia in ram lambs, Onl J Vet Res., 22 (8):721-726, 2018. We describe effect of Saccharomyces cerevisiae (SC) with or without probiotic supplement on rumen pH, protozoa, bacteria, volatile fatty acids and ammonia in ram lambs. For 6 months, four groups of 6 ram lambs each were fed daily concentrate 2% BW with wheat straw (controls), 1g weekly probiotic (Biolact®), or supplemented daily 5g SC with or without 1g weekly probiotic. Rumen liquid was syphoned by tube 2 hours after feeding every 30 days. By 3-6 months, mean rumen liquid pH (6.02-6.15) was higher (P < 0.05) in lambs given SC with probiotic compared with controls (5.86). In those given only SC (6.00 ± 0.04), or probiotic (6.32 ± 0.04), pH was higher (P<0.05), but only during the 1st and 2nd month. Compared with controls, other groups had greater rumen protozoal activity but only those given SC with probiotic, had greater (P<0.05) number of bacteria and higher volatile fatty acid values than other lambs. By 2 months, rumen ammonia was lower (P <0.05) in ram lambs given probiotic with SC. We attribute the effects of these supplements to increased lactate utilization by bacteria. Results suggest that SC may boost probiotic (or vice versa) effect on rumen fermentation.
Keywords: Dietary, Awassi, Fermentation, Rumen, Saccharomyces cerevisiae. Raw data provided.