Effect of Dietary Supplemental Wheat Starch ByProduct on Growth Performance, Carcass Traits andImmune Responses of Broiler Chickens

Journal of Livestock Science

article

S.S. Ale Saheb Fosoul¹  M. Shahryari¹  A. Emadinia¹  A. Davoodi¹  M. M. Najari¹  G. Jalili¹  P. Arzani Shehni¹ 

[1] Research and Development Centre

关键词: Broiler chickens;    Wheat starch by-product;    Growth performance;    Humoral immunity;   

DOI  :  10.33259/JLivestSci.2022.127-134

学科分类：农业科学（综合）

来源: Journal of Livestock Science

【 摘 要 】

This experiment was conducted to investigate effects of a wheat starch by-product (WSB) on growthperformance, carcass traits and immune responses of broiler chickens. A total of 300 one-day old broiler chicks(Ross 308) were assigned to 5 dietary treatments and 5 replicates in a completely randomized design during 9 to16, 17 to 25, 26 to 39, and 40 to 50 days of experiment. Dietary treatments included a basal diet without WSBsupplementation (CTL) or graded levels of low (LSS; 100, 150, 200, and 250 g/kg), medium (MSS; 200, 250,300, 350 g/kg), high (HSS; 300, 350, 400, 450 g/kg) and extra (ESS; 400, 450 500, and 550 g/kg) inclusion ratesof wheat starch during the starter, growing, finisher 1, and finisher 2 periods, respectively. Dietarysupplementation of WSB did not have adverse effect on growth and feed conversion ratio of broiler chickensacross 9 to 25 days of age but compromised growth performance during finisher and the entire rearing periods (P˂ 0.05). Feeding diets containing WSB decreased carcass yield in broiler chickens (P ˂ 0.05). Antibody titeragainst Newcastle disease virus decreased following dietary HSS and ESS supplementation (P ˂ 0.05).Moreover, supplementation of LSS and ESS to the feed decreased relative weight of spleen (P ˂ 0.05). Inconclusion, dietary supplementation of WSB is recommended up to 450 g/kg across 9 to 25 days of age withoutany adverse effect on growth performance of broiler chickens. However, supplementation of WSB may impairimmune responses of broiler chickens.

【 授权许可】

Unknown