Abstract

SANCHEZ-CHIPRES, David et al. Effect of marine sulfurized polysaccharides as immunomodulators of the response to vaccination in broilers. Abanico vet [online]. 2021, vol.11, e406.  Epub Apr 04, 2022. ISSN 2448-6132.  https://doi.org/10.21929/abavet2021.38.

One of the obstacles poultry producers face is the mutation suffered by pathogens that complicate the combat against them; due to this, there are considered alternatives to improve productive and immunological parameters. The present study evaluated feed intake, weight gain, feed conversion, Newcastle antibody titers, and mortality in broilers, adding their diet with sulfated polysaccharides extracted from seaweed (SP). The experiment consisted of four treatments with six repetitions, each one with 25 animals of Cobb genetics. The treatments were: control with vaccination, control with SP, and SP with the vaccine. The food was weighed daily, the rejections and the birds were weighed weekly, blood samples were taken at days 9, 21, 28, 35, and 42 of life to determine antibodies to Newcastle. The control group SP obtained the best food conversion with 1.83 (P <0.05). The vaccine treatments with SP and vaccine generated the highest amount of antibodies (P <0.05). The SP product at the dose used did not increase the productive or immunological parameters, so it would be essential to carry out another study with different quantities of product inclusion.

Keywords : polysaccharides; antibodies; Newcastle.