Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
E. David Peebles
Committee Member
William W. Miller
Committee Member
Joseph L. Purswell
Committee Member
Li Zhang
Committee Member
Hammed A. Olanrewaju, G. Todd Pharr
Date of Degree
8-6-2021
Original embargo terms
Visible to MSU only for 2 years
Document Type
Graduate Thesis - Campus Access Only
Major
Poultry Science
Degree Name
Master of Science
College
College of Agriculture and Life Sciences
Department
Department of Poultry Science
Abstract
Effects of various levels of L-ascorbic acid (L-AA) (12 and 25 mg) in ovo injected at 17 and 18 days of incubation, on embryonic and posthatch physiological variables in Ross 708 broilers were investigated. There were no significant treatment effects on the hatchability or serum concentrations of L-AA in the broilers. Eye L-AA concentrations were higher, and plasma nitric oxide levels were lower in male chicks treated in ovo with 12 mg of L-AA. While exposed to elevated atmospheric NH3 levels, the in ovo injection of 12 mg of L-AA increased the body weight gain and decreased the feed conversion ratio of the broilers from 0 to 28 days of age (doa). Decreased tracheal attenuation incidence was also experienced at 0 doa in the in ovo injected L-AA groups, and tracheal inflammation was significantly reduced at 28 doa in response to the in ovo injection of 12 mg of L-AA.
Sponsorship
USDA
Recommended Citation
Mousstaaid, Ayoub, "Effects of the in ovo injection and dietary supplementation of L-ascorbic acid on the performance, tissue L-ascorbic acid concentrations, inflammatory response, and trachea histomorphology of Ross 708 broilers raised under normal and elevated atmospheric ammonia levels" (2021). Theses and Dissertations. 5180.
https://scholarsjunction.msstate.edu/td/5180