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Evaluation of the potential of extract of seaweed Eucheuma denticulatum as an alternative to antibiotic growth promoter in broiler chickens. | LitMetric

AI Article Synopsis

  • Seaweeds are being studied for their potential benefits in gut health and immunity in humans and farm animals, specifically as alternatives to antibiotic growth promoters (AGP) in broiler chicken diets.
  • An experiment was conducted on commercial broiler chickens fed different diets, including a dried seaweed extract (PBD5) at varying doses, with findings showing that the highest dosage (1.0 g/kg for 0-2 weeks) significantly improved feed efficiency and related gut health markers.
  • Results indicated that the PBD5 group had better overall performance, including lower fecal pathogen counts and increased expression of immune-related genes, suggesting it can effectively replace AGP in chicken feed.

Article Abstract

The seaweeds are in focus for their immunity and gut health-stimulating potentials in humans and farm animals, but their potential as a gut health-promoting agent and performance booster to replace antibiotic growth promoters (AGP) in broiler chicken-feed remains to be evaluated. feeding experiments were conducted on commercial broiler chickens (1-42 days post-hatch) to evaluate dried aqueous exact of red seaweed (referred to as PBD 5). Each of the three test diets (basal diet with three dosing regimens of PBD5, 0.25 g kg for 0-6 weeks, 0.25 g kg for 0-4 weeks or 1.0 g kg for 0-2 weeks), along with an AGP supplemented diet (Virginiamycin (V), 20 ppm in basal diet), and a control diet was fed to 13 pen replicates of five chicks in each. PBD5 at 1.0 g kg diet for 0-2 weeks improved (P < 0.05) cumulative feed efficiency (4.65 % improvement at 28 d, and 3.74 % at 35 d) than the control and comparable to the V group and the trend in improvement persisted up to 42 d. The group fed with PBD5 @ 1.0 g kg for 0-2 weeks had significantly (P < 0.05) higher serum IgG level, glutathione peroxidase levels, fat digestibility, and expression of occludin and avian beta-defensin 4 gene in the gut and a trend of increased expression of growth hormone receptor gene in the liver as compared to the control with no significant effect on body weight, phytohemagglutinin response or haemagglutination inhibition titer. At d 25 of age, fecal count was significantly (P < 0.01) lower in the seaweed extract groups and the V group as compared to the control. It can be concluded that dried aqueous extract of at 1 g kg diet for 0-2 weeks can be used as an alternative to antibiotic growth promoter in broiler chickens to improve feed efficiency and reduce gut pathogen load, and the improved performance was associated with increased expression of gut immunity and growth hormone receptor genes.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10850895PMC
http://dx.doi.org/10.1016/j.heliyon.2024.e25219DOI Listing

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