Sign up now!
Don't show this again
Sweepstakes Rules

We’re glad you’re enjoying Poultry Health Today.
Access is free but you’ll need to register to view more content.
Already registered? Sign In
Tap to download the app
REPORTSCollect articles and features into your own report to read later, print or share with others

Create a New Report


Read Later

Create a new report

Report title (required) Brief description (optional)
follow us

You must be logged in to edit your profile.

Sponsored by Zoetis

Sponsored By Zoetis

PHTweb 4925 E.maxima Jenkins Cr

E. maxima linked to mortality in broilers vaccinated for coccidiosis

Eimeria maxima in broilers vaccinated against coccidiosis appears to be an important cause of mortality, according to the preliminary results of a study presented at the 2017 annual meeting of the American Association of Avian Pathologists.

However, the association between E. maxima and increased mortality was not seen in broilers that received an anticoccidial medication instead of vaccination, said Mark Jenkins, PhD, a microbiologist with the USDA’s Agricultural Research Service.

In addition, there was no correlation between mortality and other coccidial species — E. acervulina, E. tenella or E. praecox — whether broilers were vaccinated or treated with an anticoccidial, he said of the study, conducted with Mountaire Farms.

During the study, investigators tracked the species and concentration of Eimeria on commercial broiler farms for 2 years. They also looked at broiler performance.

“These data support observations that E. maxima is an important cause of mortality, probably due to it predisposing chicks to necrotic enteritis,” Jenkins said.

Although E. maxima-oocyst levels correlated with mortality, they did not correlate with broiler performance as measured by average daily weight gain and feed conversion ratio at 7 to 8 weeks, a finding Jenkins said was “of interest.”

Posted on October 17, 2017

tags: ,

You must be logged in to edit your profile.

Google Translate is provided on this website as a reference tool. However, Poultry Health Today and its sponsor and affiliates do not guarantee in any way the accuracy of the translated content and are not responsible for any event resulting from the use of the translation provided by Google. By choosing a language other than English from the Google Translate menu, the user agrees to withhold all liability and/or damage that may occur to the user by depending on or using the translation by Google.