The effects of medicinal plants, probiotic and antibiotic, on performance, carcass traits and blood parameters in broiler chicks

Document Type : Research Paper

Authors

1 Former Graduate Student, Department of Animal Science, Islamic Azad University, Maragheh Branch

2 Assistant professor, Department of Animal Science, Islamic Azad University, Maragheh Branch

Abstract

A study was conducted to evaluate the effects of three medicinal plants, antibiotic and probiotic on performance, carcass traits, immune system and biochemical parameters in broiler chicks. A total of 360 one-day old mixed Ross-308 broiler chicks were assigned to six treatment with 3 replicate (n=20). The diets were fed including: the control (without feed additive), control supplemented with 20 ppm of virginamycin, control supplemented with 50 ppm of probiotic (protexin), control with 1.5% of either Thyme (thymus vulgaris L), Chicory (cichorium intybus), Pennyroyal (mentha pulegium). Body weight gain increased with antibiotic supplementation and decreased with adding Pennyroyal (P<0/05) respectively, but the difference between chicory and control, antibiotic and probiotic was not significant. Feeding diets supplemented with antibiotic, probiotic, Chicory, and Thyme had no significant effect on feed intake, while the feed intake decreased by feeding Mentha pulegium (P<0/05). Dietary treatments had no effect on the feed conversion ratio, relative weight of abdominal fat, liver, and tight. However, carcass yield decreased by feeding diets supplemented by Pennyroyal (P<0/05). The level of glucose, triglyceride, hetrophile, lymphocyte and hetrophile/lymphocyte had not significantly affected by dietary treatments. It was concluded that supplementation of Chicory and Thyme had no positive effects compared to diets containing antibiotic and probiotic on performance and blood metabolites in broiler diets.

Keywords

References

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Animal Sciences Journal
Volume 29, Issue 111
August 2016
Pages 45-54

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