Poultry USA - November 2019 - 14

14
toolbox
ISSUE

N E W S

A B O U T

P O U L T R Y

H E A L T H

PO U LT RY
H E A LT H
T OD A Y®

P R O D U C T S

P O U L T R Y H E A L T H T O D A Y . C O M

"

Our work indicates

Q: Were these challenge studies?

broiler integrators

MD: Yes. In all three studies, we administered Eimeria spp. - various species of the parasite
that causes coccidiosis - to birds at 14 days of age. At 18 days of age, we administered
C. perfringens in feed and Salmonella Heidelberg, which was given orally. Controls were
challenged but did not receive any interventions for NE or Salmonella.

should carefully evaluate
their gut-health control

Q: How did you evaluate results?

strategies since they
can affect the Salmonella
prevalence and load.

"

MD: We looked at lesion scores 3 days after challenge with C. perfringens. At 42 days of age
- the end of the study - we evaluated performance, mortality and the incidence and load
of Salmonella.
Q: What were the results in the first study?
MD: In broilers that received BMD, there was a significant reduction (p < 0.05) of the
Salmonella load on boot swabs and in the prevalence of Salmonella in carcass rinses. By
the end of the study and compared to controls, NE lesion scores decreased, mortality was
negligible and feed conversion improved by 6 points.
It's important to note that BMD has no effect on Salmonella. BMD is effective against
Gram-positive bacteria such as C. perfringens, but Salmonella is a Gram-negative pathogen.
This study therefore provides evidence that by preventing NE with BMD, the prevalence of
Salmonella may be reduced.

Russell S. Processing Tip...A possible reason why more
plants are failing the Salmonella performance standard.
The University of Georgia, Cooperative Extension Service.
January 2005.
1

Hargis B. Overview of Necrotic Enteritis in Poultry.
Merck Veterinary Manual.
2

3

Ibid.

4
Data on file, Study Report Nos. 06-16-7AMVG, 02-177AMVG, 03-17-AMVG, Zoetis LLC.

For more information, contact
Manuel DaCosta
(manuel.dacosta@zoetis.com) or your
Zoetis representative.

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Q: And the results in Studies 2 and 3? Did vaccination or feed additives
reduce Salmonella?
MD: The modified-live Salmonella Typhimurim vaccination effectively reduced the
Salmonella load and prevalence even in the presence of NE.
Our ability to compare the effect of the feed additives was limited because the Salmonella
presence in samples we collected was lower than it was in Study 1. Overall, the results with
feed additives in Studies 2 and 3 were somewhat variable. The best reductions in Salmonella
prevalence and load were achieved with BMD, followed by zoalene then the probiotic
interventions. In Study 3, ceca and boot-swab numbers were substantially reduced
compared to controls. For commercial producers, even modest reductions can have a major
impact on Salmonella detection at processing.

Q: How can your results help operations with NAE flocks that can't use BMD?
MD: Our work indicates broiler integrators should carefully evaluate their gut-health control strategies since they can affect the Salmonella prevalence and load. Vaccination against
Salmonella is an effective option. In addition, some feed-additive interventions can help
mitigate enteric disease and, to some extent, control Salmonella proliferation.

Toolbox is a series of interviews with veterinarians
and other technical specialists about their
experiences managing antimicrobials, vaccines and
other tools for poultry health. It is produced by the
editors of Poultry Health Today® on behalf of the
US Poultry Business of Zoetis.

To contact Poultry Health Today:
editor@poultryhealthtoday.com

To contact Zoetis:
1.855.702.1036

P O U LT RY H E A LT H TO DAY. CO M

ZO E T I S U S . CO M / P O U LT RY

Copyright © 2019, Poultry Health Today.

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Poultry USA - November 2019

Table of Contents for the Digital Edition of Poultry USA - November 2019

Poultry USA - November 2019
Contents
Further antibiotic use reduction will be hard
Bringing tech solutions to poultry industry challenges
Bell & Evans grows in organic, specialty poultry
Gen Z moms will dig deeper for information on chicken
8 digital technologies to disrupt the turkey industry
Efficiency, sustainability key for Pilgrim’s Sanford
Tyson, Sanderson earn Clean Water Award honorable mention
Marketing poultry products to younger generations
Bulb type doesn’t have much impact on broiler performance
Product Review
Market Place
Ad Index
Poultry USA - November 2019 - CT1
Poultry USA - November 2019 - CT2
Poultry USA - November 2019 - Poultry USA - November 2019
Poultry USA - November 2019 - Cover2
Poultry USA - November 2019 - Contents
Poultry USA - November 2019 - Further antibiotic use reduction will be hard
Poultry USA - November 2019 - 3
Poultry USA - November 2019 - 4
Poultry USA - November 2019 - 5
Poultry USA - November 2019 - Bringing tech solutions to poultry industry challenges
Poultry USA - November 2019 - 7
Poultry USA - November 2019 - 8
Poultry USA - November 2019 - 9
Poultry USA - November 2019 - Bell & Evans grows in organic, specialty poultry
Poultry USA - November 2019 - 11
Poultry USA - November 2019 - 12
Poultry USA - November 2019 - 13
Poultry USA - November 2019 - 14
Poultry USA - November 2019 - 15
Poultry USA - November 2019 - 16
Poultry USA - November 2019 - 17
Poultry USA - November 2019 - Gen Z moms will dig deeper for information on chicken
Poultry USA - November 2019 - 19
Poultry USA - November 2019 - 20
Poultry USA - November 2019 - 21
Poultry USA - November 2019 - 8 digital technologies to disrupt the turkey industry
Poultry USA - November 2019 - 23
Poultry USA - November 2019 - Efficiency, sustainability key for Pilgrim’s Sanford
Poultry USA - November 2019 - 25
Poultry USA - November 2019 - 26
Poultry USA - November 2019 - 27
Poultry USA - November 2019 - Tyson, Sanderson earn Clean Water Award honorable mention
Poultry USA - November 2019 - 29
Poultry USA - November 2019 - 30
Poultry USA - November 2019 - 31
Poultry USA - November 2019 - Marketing poultry products to younger generations
Poultry USA - November 2019 - 33
Poultry USA - November 2019 - 34
Poultry USA - November 2019 - 35
Poultry USA - November 2019 - 36
Poultry USA - November 2019 - 37
Poultry USA - November 2019 - Bulb type doesn’t have much impact on broiler performance
Poultry USA - November 2019 - Product Review
Poultry USA - November 2019 - Ad Index
Poultry USA - November 2019 - Cover3
Poultry USA - November 2019 - Cover4
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