Resumo

HAYAJNEH, F.M.F.. Natural feed additives for broiler chickens. S. Afr. j. anim. sci. [online]. 2019, vol.49, n.5, pp.869-875. ISSN 2221-4062.  http://dx.doi.org/10.4314/sajas.v49i5.9.

The study aims to evaluate the effects of ginger root powder and apple cider vinegar as natural feed additives on growth performance, meat quality, antimicrobial activity, and blood parameters of broiler chicken. A total of 450 one-day-old unsexed broiler chicks (Ross) were obtained from commercial hatchery and randomly distributed into three groups. Each group contained 3 replicates of 50 chicks. The 3 groups were randomly allocated to 3 treatments, where they were offered apple cider vinegar, Tv, ginger group, Tg, and control group, Tc. All the birds were offered a starter diet first 21 days filled by a grower diet from 22^nd to 35^th day and thereafter on a finisher diet up to day 35. There was no significant difference in thawing breast weight, muscle weight, water holding capacity, and colour of the broiler chickens supplemented with ginger root and apple cider vinegar. The bacterial colonies obtained from heart, lungs, and air sacs showed a significant difference between the bacterial colonies of lungs and heart and between colonies of lungs and liver. The final body weight between the three treatments was not affected by the natural feed additive supplementation. However, there was no significant impact of ginger root and apple cider vinegar supplementation on broiler serum total protein, total cholesterol, triglyceride (Tri), ALT, and AST levels. The results concluded that herbal natural feed additives have negative impact on growth performance, meat quality, antimicrobial activity, and blood parameters of broiler chickens.

Palavras-chave : Antimicrobial activity; Growth performance; Meat Quality.

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