Evaluation of Immunoglobulin-Y in Place of Tylosin Phosphate in the Diets Fed to Holstein Steers and Preliminary Analysis of Liver Abscess Duration on Animal Growth Performance

Miranda K Stotz, Darren Henry, Whitney Crossland

Research output: Contribution to journalArticlepeer-review

Abstract

<jats:title>Abstract</jats:title><br> <jats:p>Despite the regular use of feed-grade macrolide-antibiotics, bovine liver abscesses persist, representing a financial burden to pre- and post-mortem sectors of the beef industry. An immunoglobulin-Y (IGY) additive developed to target Fusobacterium necrophorum and Trueperella pyogenes, was evaluated for the control of liver abscesses. Research is needed for the impact of liver abscess severity as well as abscess duration on steer performance and carcass characteristics. Holstein steers (n=64; initial body weight (BW)=372.5±2.41 kg) consuming a finishing diet for 188 d were used in a completely randomized design where treatments included: TYL (tylosin phosphate 90 mg/day; n=32) or IGY (2.5 g/day; n=32) and steer was the experimental unit. Feed intake was recorded daily while BW and liver ultrasound outcome (normal or abnormal) was recorded every 28 d until slaughter to estimate duration of abscess presence (DUR). Continuous var
Original languageEnglish
JournalTranslational Animal Science
DOIs
StatePublished - Dec 2020

Fingerprint

Dive into the research topics of 'Evaluation of Immunoglobulin-Y in Place of Tylosin Phosphate in the Diets Fed to Holstein Steers and Preliminary Analysis of Liver Abscess Duration on Animal Growth Performance'. Together they form a unique fingerprint.

Cite this