Effect of Yeast (Saccharomyces cerevisiae) Supplementation on Ruminal Digestion of Bajra (Pennisetum glaucum) Straw and Bajra Straw-based Complete FeedIn Vitro

Ganai, A.M.; Sharma, T.; Dhuria, R.K.

doi:10.5958/0974-181x.2015.00016.5

Cited by 7 publications

(5 citation statements)

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“…The positive effects on digestibility have been confirmed in meta-analyses (Desnoyers et al, 2009;Poppy et al, 2012) and other studies that showed dose responses with increasing levels of CFUs in strawbased diets (Ganai et al, 2015). The higher digestibility values could be explained by a higher population of cellulolytic bacteria, which is one of the most consistent effects of yeast (Martin & Nisbet, 1992;Wallace & Newbold, 1993).…”

Section: Discussionsupporting

confidence: 51%

Effects of types and doses of yeast on gas production and in vitro digestibility of diets containing maize (Zea mays) and lucerne (Medicago sativa) or oat hay

et al. 2016

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Two yeast products formulated with Saccharomyces cerevisiae were evaluated at the same colonyforming units (CFUs) per gram of substrate. Samples of maize, lucerne and oat hays were mixed (0.5 kg) to a proportion of 80% forage (lucerne or oat) with 20% maize (DM basis) and combined with each yeast to obtain 1.5 x 10 7 or 3.0 x 10 7 CFU/g DM. There was also a control without yeast. In vitro gas production was measured at 0, 2, 4, 6, 8, 10, 14, 18, 24, 30, 36, 42, 48, 60, and 72 h incubation. There was no forage/yeast interaction. Both yeast products tended to reduce the maximum volume produced quadratically and lag time linearly, while in vitro dry matter digestibility (IVDMD) increased linearly. Ruminal ammonia N and lactic acid were not affected, whereas methane and carbon dioxide tended to be reduced with the intermediate dose of yeast. When the mixture included oat hay, the total volume of gas increased, the lag time decreased, and there was higher IVDMD than in the lucerne-based mixtures, which were associated with lower methane production. Ammonia and lactic acid remained unchanged. The two yeast products showed the same effects on the dynamics of gas production and in vitro digestibility when dosed at the same number of viable cells or CFUs, and there was no interaction with forage quality.

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Section: Discussionsupporting

confidence: 51%

Effects of types and doses of yeast on gas production and in vitro digestibility of diets containing maize (Zea mays) and lucerne (Medicago sativa) or oat hay

et al. 2016

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“…(2017), who suggested that using fibrolytic enzymes in combination with probiotics had a significant positive effect on the pH of the in vitro medium. In contrast, some researchers have observed either no effect, or even a reduction in rumen pH, upon supplementation with yeast (Ganai et al ., 2015). These variations may be attributed to different experimental conditions related to rumen liquor sources, diet composition, experimental design, enzyme dosages and sources, and types of microorganisms used (in terms of strain, dose, combination and viability).…”

Section: Methane Production Ruminal Fermentation and Kinetic Measurementioning

confidence: 99%

Evaluation of cellulolytic exogenous enzyme-containing microbial inoculants as feed additives for ruminant rations composed of low-quality roughage

et al. 2020

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The supplementation of ruminant diets with exogenous cellulolytic enzymes can improve their digestibility and feeding value. The objective of this study was to determine the effect of supplementing roughage (rice straw) and concentrate with inoculants containing four fungal strains (Pleurotus ostreatus, Phanerochaete chrysosporium, Trichoderma reesei and Trichoderma viride) and four bacterial strains (Paenibacillus polymyxa, Bacillus megaterium, Bacillus circulans and Bacillus subtilis), given separately or as a mixture, as a source of exogenous cellulolytic enzymes, on basic rumen parameters in vitro, including digestibility and methane production. A batch culture trial was used to select the best supplements, and a long-term rumen simulation technique (RUSITEC) was used to evaluate the effects of P. chrysosporium, B. subtilis, and a 1 : 1 mixture of these two on dietary component digestibility and fermentation parameters. In the batch culture evaluation, there were significant increases in the organic matter (OM) digestibility, the total gas production expressed as ml/g of dry matter, the OM, the neutral detergent fibre (NDF) and the acid detergent fibre (ADF) of the supplemented rations, as compared to the control, excluding the rations supplemented with T. viride and B. circulans. In the RUSITEC, the ration supplemented with mixed inoculants showed significantly higher digestibility of crude protein, ether extract, NDF and ADF than did the ration supplemented with the P. chrysosporium and B. subtilis inoculants. It can be concluded that the simultaneous use of fungal and bacterial exogenous cellulases on rice straw roughage improves its digestibility, without negative effects on other rumen parameters.

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“…In another experiment, Ganai et al . [ 44 ] again reported improvement (p<0.01) in IVDMD, IVOMD and IVNDFD as well as TGP on supplementation of yeast to bajra straw and bajra straw-based complete feed. Likewise, Nehra et al .…”

Section: Feeding Complete Feedmentioning

confidence: 94%

Prospects of complete feed system in ruminant feeding: A review

Beigh¹,

Ganai²,

Ahmad³

2016

Vet World

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Effective utilization of available feed resources is the key for economical livestock rearing. Complete feed system is one of the latest developments to exploit the potential of animal feed resources in the best possible way. The complete feed is a quantitative mixture of all dietary ingredients, blended thoroughly to prevent separation and selection, fed as a sole source of nutrients except water and is formulated in a desired proportion to meet the specific nutrient requirements. The concentrate and roughage levels may vary according to the nutrient requirement of ruminants for different production purposes. The complete feed with the use of fibrous crop residue is a noble way to increase the voluntary feed intake and thus animal’s production performance. In this system of feeding, the ruminant animals have continuous free choice availability of uniform feed mixture, resulting in more uniform load on the rumen and less fluctuation in release of ammonia which supports more efficient utilization of ruminal non-protein nitrogen. Feeding complete diet stabilizes ruminal fermentation, thereby improves nutrient utilization. This feeding system allows expanded use of agro-industrial byproducts, crop residues and nonconventional feeds in ruminant ration for maximizing production and minimizing feeding cost, thus being increasingly appreciated. However, to extend the concept extensively to the field and make this technology successful and viable for farmers, more efforts are needed to be taken.

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Effect of Yeast (Saccharomyces cerevisiae) Supplementation on Ruminal Digestion of Bajra (Pennisetum glaucum) Straw and Bajra Straw-based Complete FeedIn Vitro

Cited by 7 publications

References 0 publications

Effects of types and doses of yeast on gas production and <i>in vitro</i> digestibility of diets containing maize (<i>Zea mays</i>) and lucerne (<i>Medicago sativa</i>) or oat hay

Effects of types and doses of yeast on gas production and <i>in vitro</i> digestibility of diets containing maize (<i>Zea mays</i>) and lucerne (<i>Medicago sativa</i>) or oat hay

Evaluation of cellulolytic exogenous enzyme-containing microbial inoculants as feed additives for ruminant rations composed of low-quality roughage

Prospects of complete feed system in ruminant feeding: A review

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