In vivo evaluation of riboflavin and Bacillus Subtilis on growth performance and intestinal health of male broilers challenged with coccidiosis
Tabler, George Thomas
Date of Degree
Original embargo terms
Visible to MSU only for 1 Year||8/16/2021
Graduate Thesis - Open Access
College of Agriculture and Life Sciences
Department of Poultry Science
The effects of supplementation of riboflavin along with Bacillus subtilis was investigated on growth performance and intestinal health of broilers under coccidial challenge. Treatments are 3 × 2 × 2 factorial arrangement, which includes 3 levels of riboflavin (0.75, 6.6 (recommended), and 20 ppm), with or without Bacillus subtilis, and with or without coccidial challenge. Coccidial challenge impaired the intestinal morphology and reduced body weight (BW), body weight gain (BWG), and feed intake and increased FCR between d 14-28. However, the cocci impact on birds was reduced along with age, as the effects on internal organs was reduced, which allowed birds to recover. However, coccidiosis reduced overall BW and BWG and increased abdominal fat pad weight and slight woody breast incidence. In conclusion, riboflavin at tested level was unable to enhance growth performance and intestinal health, but its inclusion altered birds response to coccidial challege other than feeding Bacillus subtlis alone.
This publication is a contribution of the Mississippi Agricultural and Forestry Experiment Station. This material is based upon work that is supported by the National Institute of Food and Agriculture (NIFA), U.S. Department of Agriculture, Hatch project under accession number MIS-329250, and by NIFA Award N0. 2018-67015-27475.
Poudel, Sabin, "In vivo evaluation of riboflavin and Bacillus Subtilis on growth performance and intestinal health of male broilers challenged with coccidiosis" (2020). Theses and Dissertations MSU. 2674.