Microbial Quality of Liquid Feed for Pigs and Its Impact on the Porcine Gut Microbiome

Cullen, James T.; Lawlor, Peadar G.; Cormican, Paul; Gardiner, Gillian E.

doi:10.3390/ani11102983

Cited by 7 publications

(3 citation statements)

References 92 publications

(244 reference statements)

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“…Our meta-analysis revealed that ADG and ADFI were increased by 13.8% and 7.02% on average by Lactobacillus addition. It is suggested that Lactobacillus- based feeding could enhance feed palatability ( 54 ), which may explain the increased feed intake. A probiotic - improved G/F ratio was reported by us, suggesting that Lactobacillus supplementation brings about a more cost-effective feeding program than the control piglets.…”

Section: Discussionmentioning

confidence: 99%

A meta-analysis of Lactobacillus-based probiotics for growth performance and intestinal morphology in piglets

Zhu

Yao²,

Zhu³

et al. 2022

Front. Vet. Sci.

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Antibiotics are widely used as growth promoters (AGPs) in livestock production to improve animal performance and health. However, pig producers today face the prohibition of in-feed antimicrobials and have to find safe and effective alternatives. Lactobacillus species are active microorganisms that convey multiple beneficial effects to the host and are one of the most promising AGPs replacements. Here, we aim to comprehensively assess the effects of Lactobacillus spp. supplementation on growth performance and intestinal morphology (villus height [VH], crypt depth [CD], and the V/C ratio) of piglets. Among the 196 identified studies, 20 met the criteria and were included in the meta-analysis. The effects of Lactobacillus-based probiotics supplementation on growth performance and intestinal morphology were analyzed using a random-effects model. And the publication bias was evaluated by funnel plots. Our results revealed that Lactobacillus spp. supplementation significantly improved the growth performance, including average daily feed intake (ADFI), average daily gain (ADG), and the gain-to-feed ratio (G/F) in piglets (P < 0.05). Meanwhile, Lactobacillus spp. remarkably increased VH and the V/C ratio (P < 0.05) in the small intestine, including the duodenum, jejunum, and ileum, which might contribute to an improved digestive capacity of these animals. In conclusion, our findings provide concrete evidence of the growth-promoting effects of Lactobacillus spp. supplementation in piglets and a better understanding of the potential of Lactobacillus-based probiotics as AGPs alternatives in pig production.

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Section: Discussionmentioning

confidence: 99%

A meta-analysis of Lactobacillus-based probiotics for growth performance and intestinal morphology in piglets

Zhu

Yao²,

Zhu³

et al. 2022

Front. Vet. Sci.

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“…Microbiological studies of feed were conducted in the laboratory for the study of pig diseases of the National Research Center "Institute of Experimental and Clinical Veterinary Medicine" (Kharkiv) according to modern methods (Cullen et al, 2021). Identification and species affiliation of isolated field isolates of bacteria were performed by cultural-morphological and biochemical properties (Goodfellow et al, 2012).…”

Section: Methodsmentioning

confidence: 99%

Influence of Probiotic Microorganisms on Microbial Biofilms in Feeds

Kolchyk

Illarionova²,

Buzun

et al. 2022

Scientific Horizons

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At different stages of feed production and storage, it is possible to contaminate both feed and their components with various pathogenic and opportunistic microorganisms that can cause infectious diseases not only among animals but also have epidemiological significance. The aim of the study was to isolate biofilm-forming strains of microorganisms from feed, as well as to study the inhibitory activity of the probiotic complex of bacteria of the genus Bacillus against microbial biofilms. Identification and species affiliation of isolated bacterial field isolates were performed by cultural-morphological and biochemical properties. The formation of biofilms was studied by determining the ability of isolates of microbial associations and individual species of microorganisms to adhere to the surface of a 96-well polystyrene tablet according to the method of O'Toole & Kolter, 1998. Determination of microbial contamination of 50 industrial batches of feed from 4 pig farms in two regions of Ukraine (barley, compound feed SK-31 for rearing, SK-51 for fattening pigs, EXCELL starter for pigs 15%, shop prestarter, compound feed for lactating sows). In 11 experimental batches of barley (68.8%) and 13 batches of 3 types of feed (SK-31, SK-51, feed for lactating sows) identified associations with different microorganisms Pasteurella multocida, Corynebacterium striatum, Bacillus subtilis, Leptothrix ochracea, Haemophilus parasuis and yeast Candida albicans. The association of Actinobacillus pleuropneumonia bacteria with B. subtilis was identified in 2 batches (50%) of the shop prestarter. Moderate, by optical density, biofilm formation for associations of microorganisms P. multocida + C. striatum + C. albicans (D620=3.59) and P. multocida + L. ochracea + C. albicans (D620=3.62). Planktonic forms of C. striatum and P. multocida showed low film-forming activity at the level (D620<1.51). Inhibitory activity of the probiotic complex of bacteria of the genus Bacillus (B. subtilis, B. licheniformis, B. amyloliquefaciens) was determined by isolated variations of microbial biofilms in 5 feed species, which displaced all biofilm-forming microorganisms except H. parasuis

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“…Liquid feeds, which are fluid mixtures of water and feed mixed in specific proportions, offer numerous advantages over traditional solid dry feeds [1]. These advantages include an improved pigsty environment [2], reduced feed costs [3], the reduced use of antibiotics [4,5], the assisted weaning of piglets [6], improved palatability, and enhanced gut health [7,8]. As a result, liquid feeds offer the potential for a wide range of uses in pig farming.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of Geometry of Liquid Feed Conveyor Pipes

Xia,

Hu,

et al. 2024

Agriculture

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The promotion and use of liquid feeding face the challenge of insufficiently stable delivery. This issue can be resolved, in part, by using the spiral flow produced by a spiral pipe (SPP). The aim of this study is to investigate how the structural characteristics of the spiral pipe affect the flow state of the liquid feed, and for this purpose, the computational fluid dynamics (CFD) technique has been employed and the liquid feed delivery process has been simulated by means of an Eulerian two-fluid model The results reveal a significant improvement in the slurry’s homogeneity as it traveled through a spiral pipe compared with a straight pipe (STP). The swirl number normally increased with the number, length, height, and angle of the spiral pipe’s guide vanes. The solid-phase distribution was more homogeneous when values of N = 1, L = 1D, H = 3/8R, and θ = 20° were used, respectively, and the COV within 10D downstream of the outlet of the spiral pipe was 3.902% smaller than that of the straight pipe. The results of this study can be used as a reference for the design of liquid feed-conveying pipes.

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Microbial Quality of Liquid Feed for Pigs and Its Impact on the Porcine Gut Microbiome

Cited by 7 publications

References 92 publications

A meta-analysis of Lactobacillus-based probiotics for growth performance and intestinal morphology in piglets

A meta-analysis of Lactobacillus-based probiotics for growth performance and intestinal morphology in piglets

Influence of Probiotic Microorganisms on Microbial Biofilms in Feeds

Design and Optimization of Geometry of Liquid Feed Conveyor Pipes

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