Rumen microflora, fermentation pattern and microbial enzyme activity in sheep fed paddy straw based complete feed fortified with probiotics

Sheikh, G.G.; Ganai, A.M.; Sheikh, Aasif Ahmad; Mir, Danish Masood

doi:10.1080/09291016.2019.1644019

Cited by 7 publications

(5 citation statements)

References 36 publications

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“…Moreover, Dahlan (2000) showed that goat fed oil palm fronds produced more ammonia, TVFA, acetic acid, cellulase and xylanase compared to goat fed rice straw, which supports our findings. Sheikh et al (2019) revealed that feed digestibility and microbial activity were improved when degradable protein was added to the diet, which could explain the higher bacterial population and VFA production in S1.…”

Section: Discussionmentioning

confidence: 99%

Rumen bacterial community profile and fermentation in Barki sheep fed olive cake and date palm byproducts

Rabee

Kewan

Sabra

et al. 2021

PeerJ

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Rumen bacteria make the greatest contribution to rumen fermentation that enables the host animal to utilize the ingested feeds. Agro-industrial byproducts (AIP) such as olive cake (OC) and date palm byproducts (discarded dates (DD), and date palm fronds (DPF)) represent a practical solution to the deficiency in common feed resources. In this study, thirty-six growing Barki lambs were divided into three groups to evaluate the effect of untraditional diets including the AIP on the growth performance. Subsequently, nine adult Barki rams were used to evaluate the effect of experimental diets on rumen fermentation and rumen bacteria. Three rations were used: common concentrate mixture (S1), common untraditional concentrate mixture including OC and DD (S2), and the same concentrate mixture in S2 supplemented with roughage as DPF enriched with 15% molasses (S3). The animals in S2 group showed higher dry matter intake (DMI) and lower relative growth rate (RGR) as compared to the animals in S1 group. However, the animals in S3 group were the lowest in DMI but achieved RGR by about 87.6% of that in the S1 group. Rumen pH, acetic and butyric acids were more prevalent in animals of S3 group and rumen ammonia (NH3-N), total volatile fatty acids (TVFA), propionic acid were higher in S1. Rumen enzymes activities were higher in S1 group followed by S3 and S2. The bacterial population was more prevalent in S1 and microbial diversity was higher in the S3 group. Principal coordinate analysis revealed clusters associated with diet type and the relative abundance of bacteria varied between sheep groups. The bacterial community was dominated by phylum Bacteroidetes and Firmicutes; whereas, Prevotella, Ruminococcus, and Butyrivibrio were the dominant genera. Results indicate that diet S3 supplemented by OC, DD, and DPF could replace the conventional feed mixture.

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Section: Discussionmentioning

confidence: 99%

Rumen bacterial community profile and fermentation in Barki sheep fed olive cake and date palm byproducts

Rabee

Kewan

Sabra

et al. 2021

PeerJ

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“…The decline in rumen pH under optimum point affects rumen fermentation adversely, especially the cellulose degradation [30] ; consequently, animal performance could be decreased. The concentrate feed mixture consists of rapidly fermentable carbohydrate that encourages the microbial activities and TVFA production that declines the rumen pH; in contrast, the higher dietary fiber has a neutralizing effect on rumen PH [31] , [32] . This explanation supports the low pH, and higher TVFA production in the S1 group fed the common concentrate mixture ( Table 1 ).…”

Section: Discussionmentioning

confidence: 99%

Effect of olive and date palm by-products on rumen methanogenic community in Barki sheep

Rabee¹,

Kewan²,

Shaer³

et al. 2022

AIMSMICRO

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<abstract> <p>Rumen methanogens prevent the accumulation of fermentation gases in the rumen and generate methane that increases global warming and represents a loss in animals' gross energy. Non-traditional feed resources such as the by-products of date palm (<italic>Phoenix dactylifera</italic>) and olive (<italic>Olea europaea</italic>) trees have received attention to be used in animal feeding. This study evaluated the impact of non-traditional feed resources including olive cake (OC), discarded dates (DD), and date palm frond (DPF) in sheep diet on rumen fermentation, diversity and relative abundance of rumen methanogens. Nine adult rams were assigned to three equal groups and fed three diets: traditional concentrates mixture (S1); non-traditional concentrate mixture (S2) based on DD and OC; and (S3) composed of the same S2 concentrate supplemented with DPF as a roughage part. The results showed that rumen pH was higher with S3 diet than the other two diets. However, the S1 diet showed the highest values of total volatile fatty acids (TVFA) and rumen ammonia. In addition, the proportions of acetic and butyric acids were increased, whereas propionic acid declined in S2 and S3 compared to the S1 diet. Rumen methanogens were dominated by <italic>Methanobrevibacter</italic> that showed a numeric decline by including DD, OC, and DPF in the animal diets. Principal component analysis (PCA) based on rumen fermentation parameters and relative abundances of methanogens genera showed three distinct clusters. Also, positive and negative correlations were revealed between methanogens genera and rumen metabolites. This study expands the knowledge regarding the effect of agricultural byproducts on rumen fermentation and the methanogenic community.</p> </abstract>

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“…Researchers have found no cellulolytic enzyme genes in the genome of the giant panda, which must rely instead on its gut microbes to digest cellulose ( Zhang et al, 2007 ; Li et al, 2010 ; Wei et al, 2019 ). However, it lacks a herbivore-like rumen, in which more than half the carbohydrate-active proteins can degrade cellulose and many still-unknown bacterial species (and candidate genes) participate in the relevant activities ( Hess et al, 2011 ; Neumann and Suen, 2018 ; Sheikh et al, 2019 ). Several microbial strains and GH genes that can degrade cellulose have been identified with high-throughput sequencing and culture in vitro ( Anand et al, 2012 ; Mearls and Lynd, 2014 ; Wang et al, 2016 ; Guo W. et al, 2018 ; Liu et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Succession of Gut Microbial Structure in Twin Giant Pandas During the Dietary Change Stage and Its Role in Polysaccharide Metabolism

Zhan

Wang

Xie³

et al. 2020

Front. Microbiol.

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Rumen microflora, fermentation pattern and microbial enzyme activity in sheep fed paddy straw based complete feed fortified with probiotics

Cited by 7 publications

References 36 publications

Rumen bacterial community profile and fermentation in Barki sheep fed olive cake and date palm byproducts

Rumen bacterial community profile and fermentation in Barki sheep fed olive cake and date palm byproducts

Effect of olive and date palm by-products on rumen methanogenic community in Barki sheep

Succession of Gut Microbial Structure in Twin Giant Pandas During the Dietary Change Stage and Its Role in Polysaccharide Metabolism

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