Effect of Saccharomyces cerevisiae on the synchronization of organic matter and nitrogen degradation kinetics and microbial nitrogen synthesis in sheep fed Berseem hay (Trifolium alexandrinum)

Kamel, Hossam E. M.; Sekine, Junjiro; El-Waziry, Ahmed M.; Yacout, M. H.

doi:10.1016/j.smallrumres.2003.06.001

Cited by 29 publications

(29 citation statements)

References 19 publications

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“…The improved IVOMD and rate of gas production with inclusion of yeast culture observed in this study are in agreement with the findings of Kamel et al (2004), where the organic matter degradation was improved and its degradation rate was accelerated significantly in response to S. cerevisiae supplementation in treated ruminants compared with controls. The effect of yeast culture on IVOMD may be explained by the suggestions of Chaucheyras-Durand et al (2008) that yeast cells (S. cerevisiae) promote growth of rumen bacteria, particularly cellulolytic and lactate-utilizing bacteria.…”

Section: Discussionsupporting

confidence: 91%

Effects of direct-fed microbials and their combinations with yeast culture on <i>in vitro</i> rumen fermentation characteristics

Doto¹,

Liu²

2011

J. Anim. Feed Sci.

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This study was conducted to determine the effects of Bacillus licheniformis (Bl) and Clostridium butyricum (Cb) and their combinations with yeast culture on in vitro rumen fermentation in a twoway factorial design. Treatments included Bl or Cb at levels of 0, 0.5, 1, 5 and 10 mg and their combination with yeast culture at 0, 18, 27, 36 and 60 mg per 200 mg substrate, respectively. Gas production was recorded after 2, 4, 6, 9, 12, 24, 36, 48 and 72 h incubation. In vitro organic matter digestibility (IVOMD) was estimated by 24 h gas production. Rumen fermentation parameters were determined after 24 h of incubation. Rate constant of gas production was not influenced by Bl or Cb alone, but increased (P<0.05) with inclusion of yeast culture. The IVOMD was influenced (P<0.05) by addition with Bl, Cb or yeast culture, with highest IVOMD observed when Bl or Cb was combined with 60 mg yeast culture. Total volatile fatty acids were affected by Bl and yeast culture (P<0.01), but not by Cb (P>0.05). There were significant interaction effects on pH, acetate to propionate ratio and ammonia-N between yeast culture and Bl or Cb. From the above results, it is indicated that Bl and Cb may be more effective as feed additives when combined with yeast culture than when offered separately.

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Section: Discussionsupporting

confidence: 91%

Effects of direct-fed microbials and their combinations with yeast culture on <i>in vitro</i> rumen fermentation characteristics

Doto¹,

Liu²

2011

J. Anim. Feed Sci.

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“…from 2.5 × 10 4 to 5.8 × 10 4 , while feeding of live yeast resulted in significant reduction in total protozoan populations, but an increase in populations of Diplodinium spp. It has also been reported that individual yeast cultures increased, but mixed yeast culture reduced total ciliate protozoa (Tripathi and Karim 2011), which would be involved in fibre utilisation, hence contribute to improved digestibility of fibre in sheep/goats supplemented with yeast culture (Kamel et al 2004, Kritas et al 2006). This effect is, however, likely to be small.…”

Section: Rumen Protozoamentioning

confidence: 99%

“…Probiotics can improve nutrient digestibility (Krehbiel et al 2003, Abd El-Ghani 2004, degradation of fibres (El-Waziry and Ibrahim 2007) and ruminal digestion (Kamel et al 2004). This may be attributed to enhancing growth and/or cellulolytic activity of rumen bacteria (Williams 19) and preventing ruminal acidosis by balancing the VFA ratios in the rumen (Arcos-Garcia et al 2000).…”

Section: Rumen Digestionmentioning

confidence: 99%

“…Favourable responses of ruminal digestion to yeast feeding in ruminants include increased DM intake (Erasmus et al 2005) and improved organic matter degradation (Kamel et al 2004). It may be possible that stimulation of rumen bacterial populations improved fibre and organic matter degradation, therefore, yeast supplementation improved availability of energy for microbial growth and the larger organic matter degradation allows increased DM intake.…”

Section: Rumen Digestionmentioning

confidence: 99%

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Role of probiotics in nutrition and health of small ruminants

El-Tawab¹,

Youssef²,

Bakr³

et al. 2016

Polish Journal of Veterinary Sciences

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Small ruminants represent an important economic source in small farm systems and agriculture. Feed is the main component of livestock farming, which has gained special attention to improve animal performance. Many studies have been done to improve feed utilisation through addition of feed additives. For a long period, antibiotics have been widely used as growth promoters in livestock diets. Due to their ban in many countries, search for alternative feed additives has been intensified. Probiotics are one of these alternatives recognised to be safe to the animals. Use of probiotics in small ruminant nutrition has been confirmed to improve animal health, productivity and immunity. Probiotics improved growth performance through enhancing of rumen microbial ecosystem, nutrient digestibility and feed conversion rate. Moreover, probiotics have been reported to stabilise rumen pH, increase volatile fatty acids production and to stimulate lactic acid utilising protozoa, resulting in a highly efficient rumen function. Furthermore, use of probiotics has been found to increase milk production and can reduce incidence of neonatal diarrhea and mortality. However, actual mechanisms through which probiotics exert these functions are not known. Since research on application of probiotics in small ruminants is scarce, the present review attempts to discuss the potential roles of this class of feed additives on productive performance and health status of these animals.

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“…Estes microrganismos probióticos estabelecem competição com a microbiota residente no rúmen ligando-se com as mucosas, bem como são secretores de metabólitos que podem estimular outras colônias benéficas para o organismo hospedeiro (KAMEL et al, 2004;MWENYA et al, 2004), além de poderem ser absorvidos pelos ruminantes, tais como vitaminas do complexo B e peptídeos bioativos ( VAN KESSEL;RUSSELL, 1996). Alguns estudos relatam ainda aumento na produção de ácidos graxos voláteis (ENJALBERT et al, 1999), o que é benéfico, pois estes são precursores de compostos energéticos.…”

Section: Introductionunclassified

Avaliação metabólica do uso de probiótico ou monensina em cordeiros mantidos em semi-confinamento

et al. 2014

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Effect of Saccharomyces cerevisiae on the synchronization of organic matter and nitrogen degradation kinetics and microbial nitrogen synthesis in sheep fed Berseem hay (Trifolium alexandrinum)

Cited by 29 publications

References 19 publications

Effects of direct-fed microbials and their combinations with yeast culture on <i>in vitro</i> rumen fermentation characteristics

Effects of direct-fed microbials and their combinations with yeast culture on <i>in vitro</i> rumen fermentation characteristics

Role of probiotics in nutrition and health of small ruminants

Avaliação metabólica do uso de probiótico ou monensina em cordeiros mantidos em semi-confinamento

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