Improvement of Rumen Fermentation and Performance of Growing Lambs by Adding Natural Microbial Resources

El-Galil, Etab R.I. Abd; Elenin, Ebtehag I.M. Abou; Etman, K.; El-Shabrawy, H.

doi:10.3923/ajas.2016.202.212

Cited by 8 publications

(7 citation statements)

References 21 publications

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“…These findings are in agreement with a summary by Bakory (58) who reviewed a range of studies with YC supplemented to ruminants and with a study where beef cattle were fed a diet containing 2 g of yeast cell walls per kg of diet (55). In a study on the supplementation of YC to growing lambs, the digestibility of DM, OM, CP, NDF, and ADF all improved and the extent of increase in fibre digestibility was much higher than our study (59). Our results are also consistent with a dairy cow study where the supplementation of killed yeast tended to increase fibre digestibility, although lactation performance was not improved (60).…”

Section: Discussionsupporting

confidence: 93%

“…These results are consistent with studies on lambs (64) and on dairy cows (7). Parameters related to liver function such as ALT, AST, and ALP were also not changed with YC in this study and in the study by Abou Elenin et al (59), suggesting that YC has no adverse or beneficial effects on liver metabolism.…”

Section: Discussionsupporting

confidence: 93%

“…The contents of TP, ALB, and GLOB in serum decreased with the supplementation of YC in this study. These findings were contradictory to the results obtained from lambs ( 10 , 59 , 64 ) and from dairy cows ( 7 ). Even the results among these studies were inconsistent.…”

Section: Discussioncontrasting

confidence: 92%

“…Although some discrepancies exist among these studies, the common finding is an increase in fibre digestibility with the supplementation of YC. The abundance of fibre-degrading bacteria would be expected to increase for the increased fibre digestibility as found by Abou Elenin et al (59). It is proposed that metabolites in YC stimulate cellulolytic bacteria (61).…”

Section: Discussionmentioning

confidence: 85%

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Dietary Supplementation of Yeast Culture Into Pelleted Total Mixed Rations Improves the Growth Performance of Fattening Lambs

Song

You³

et al. 2021

Front. Vet. Sci.

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There is a growing interest in the use of yeast (Saccharomyces cerevisiae) culture (YC) for the enhancement of growth performance and general animal health. Grain-based pelleted total mixed rations (TMR) are emerging in intensive sheep farming systems, but it is uncertain if the process of pelleting results in YC becoming ineffective. This study aimed to examine the effects of YC supplemented to pelleted TMR at two proportions of corn in the diet on animal performance, feed digestion, blood parameters, rumen fermentation, and microbial community in fattening lambs. A 2 × 2 factorial design was adopted with two experimental factors and two levels in each factor, resulting in four treatments: (1) low proportion of corn in the diet (LC; 350 g corn/kg diet) without YC, (2) LC with YC (5 g/kg diet), (3) high proportion of corn in the diet (HC; 600 g corn/kg diet) without YC, and (4) HC with YC. Fifty-six 3-month-old male F2 hybrids of thin-tailed sheep and Northeast fine-wool sheep with a liveweight of 19.9 ± 2.7 kg were randomly assigned to the four treatment groups with an equal number of animals in each group. The results showed that live yeast cells could not survive during pelleting, and thus, any biological effects of the YC were the result of feeding dead yeast and the metabolites of yeast fermentation rather than live yeast cells. The supplementation of YC resulted in 31.1 g/day more average daily gain regardless of the proportion of corn in the diet with unchanged feed intake during the 56-day growth measurement period. The digestibility of neutral detergent fibre and acid detergent fibre was increased, but the digestibility of dry matter, organic matter, and crude protein was not affected by YC. The supplementation of YC altered the rumen bacterial population and species, but the most abundant phyla Bacteroidetes, Firmicutes, and Proteobacteria remained unchanged. This study indicates that YC products can be supplemented to pelleted TMR for improved lamb growth performance, although live yeast cells are inactive after pelleting. The improved performance could be attributed to improved fibre digestibility.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 93%

Section: Discussioncontrasting

confidence: 92%

Section: Discussionmentioning

confidence: 85%

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Dietary Supplementation of Yeast Culture Into Pelleted Total Mixed Rations Improves the Growth Performance of Fattening Lambs

Song

You³

et al. 2021

Front. Vet. Sci.

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“…Aside from these widely known probiotics, there is continued research for new microbes that stimulate potentially beneficial rumen microbes. These are the cellulolytic bacteria, such as Cellulomonas cellulase , Bacillus sp., Thermomonospora fusca , Acetobacter xylinum , Ruminococcus albus , and Clostridium cellulovorans and fibrolysozyme or fibrolytic enzyme (fibrozyme), which is compounded from Aspergillus niger , Trichoderma longibrachiatum , fermentation extracts, and fermentation soluble [46].…”

Section: The Symbiosis Of Rumen Microbiota Probiotics and Prebioticsmentioning

confidence: 99%

Recent insight and future techniques to enhance rumen fermentation in dairy goats

Mamuad

Lee²,

Lee

2019

Asian-Australas J Anim Sci

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Recent development of novel techniques in systems biology have been used to improve and manipulate the rumen microbial ecosystem and gain a deeper understanding of its physiological and microbiological interactions and relationships. This provided a deeper insight and understanding of the relationship and interactions between the rumen microbiome and the host animal. New high-throughput techniques have revealed that the dominance of Proteobacteria in the neonatal gut might be derived from the maternal placenta through fetal swallowing of amniotic fluid in utero, which gradually decreases in the reticulum, omasum, and abomasum with increasing age after birth. Multi “omics” technologies have also enhanced rumen fermentation and production efficiency of dairy goats using dietary interventions through greater knowledge of the links between nutrition, metabolism, and the rumen microbiome and their effect in the environment. For example, supplementation of dietary lipid, such as linseed, affects rumen fermentation by favoring the accumulation of α-linolenic acid biohydrogenation with a high correlation to the relative abundance of Fibrobacteriaceae. This provides greater resolution of the interlinkages among nutritional strategies, rumen microbes, and metabolism of the host animal that can set the foundation for new advancements in ruminant nutrition using multi ‘omics’ technologies.

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Fungi as a Source of Exogenous Enzymes in Ruminant Feeding

Elghandour

Salem

Adegbeye

et al. 2023

Exogenous Enzymes as Feed Additives in Ruminants

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Improvement of Rumen Fermentation and Performance of Growing Lambs by Adding Natural Microbial Resources

Cited by 8 publications

References 21 publications

Dietary Supplementation of Yeast Culture Into Pelleted Total Mixed Rations Improves the Growth Performance of Fattening Lambs

Dietary Supplementation of Yeast Culture Into Pelleted Total Mixed Rations Improves the Growth Performance of Fattening Lambs

Recent insight and future techniques to enhance rumen fermentation in dairy goats

Fungi as a Source of Exogenous Enzymes in Ruminant Feeding

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