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Growth performance and immune response of broiler chickens fed diets supplemented with probiotic and (or) prebiotic preparations | ||
Journal of Livestock Science and Technologies | ||
مقاله 1، دوره 2، شماره 2، بهمن 2014، صفحه 1-8 اصل مقاله (463.82 K) | ||
نوع مقاله: Research Article (Regular Paper) | ||
شناسه دیجیتال (DOI): 10.22103/jlst.2014.873 | ||
نویسندگان | ||
H. R. Taheri* ؛ M. Kokabi Moghadam؛ M. Kakebaveh؛ T. Harakinezhad | ||
Department of Animal Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran. | ||
چکیده | ||
The objective of this research was to investigate the efficacy of dietary inclusion of probiotics Primalac® and Bactocell® and prebiotic Fermacto® on broiler’s performance and immune response, individually or in combination. A total of 540 one-d-old male Ross 308 broiler chicks were allocated into 6 experimental treatments with 6 replicates of 15 birds per replicate from 1 to 42 d of age. The birds received a basal diet (control) or the basal diet supplemented with probiotic Primalac® (PP), probiotic Bactocell® (PB), prebiotic Fermacto® (Pre), probiotic Bactocell® + prebiotic Fermacto® (PBPre) or probiotic Primalac® + prebiotic Fermacto® (PPPre). Performance parameters were measured from 1-42 d of age. A suspension of sheep red blood cells (SRBCs) was injected into the breast of 3 birds from each replicate on d 22, and the antibody titer was measured on d 30. At d 22, blood samples (from 3 birds per replicate) were taken for measuring the white blood cells (WBCs), heterophil (HE) percent, lymphocyte (LY) percent, and the ratio of heterophil:lymphocyte (H/L). No significant differences were found between the control and supplemented groups in average daily gain (ADG), average daily feed intake (ADFI), antibody titer against SRBCs, HE percent, LY percent and H/L. Addition of PBPre or PPPre to the diet improved FCR by 8.5 and 12.7%, respectively, compared with the control group, and PBPre supplementation resulted in an increase in WBCs compared to other treatment groups. | ||
کلیدواژهها | ||
broiler؛ immune response؛ performance؛ prebiotic؛ probiotic؛ synbiotic | ||
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