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Field experience trials comparing narasin and monensin.

T K Jeffers¹, L V Tonkinson, L J Camp

¹Lilly Research Laboratories, Division of Eli Lilly and Company, Greenfield, Indiana 46140.

Poultry Science

|July 1, 1988

Summary

Narasin effectively controls chicken coccidia in commercial broiler production. This anticoccidial drug, tested at 60-80 ppm, showed comparable safety and performance to monensin.

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Poultry science·2015

Area of Science:

Veterinary Parasitology
Poultry Science
Animal Health

Background:

Coccidiosis is a significant parasitic disease in poultry, impacting broiler health and productivity.
Narasin has demonstrated efficacy against various species of chicken coccidia in controlled studies.
Evaluating narasin under commercial broiler production conditions is crucial for practical application.

Purpose of the Study:

To confirm the efficacy and safety of narasin as an anticoccidial agent in commercial broiler operations.
To compare the performance of narasin with a reference drug, monensin, under field conditions.

Main Methods:

Nine field trials were conducted across five geographic areas involving approximately 100,000 broiler chickens per treatment.
Broiler chickens were fed diets containing narasin at 60 ppm or 80 ppm.

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Monensin was administered at 100 ppm or 121 ppm as a positive control, with standard broiler management practices followed.

Main Results:

No adverse reactions were observed in broiler chickens treated with narasin.
Performance results for narasin-medicated birds were comparable to those receiving monensin.
Narasin demonstrated consistent efficacy across different commercial broiler production environments.

Conclusions:

Narasin is a safe and effective anticoccidial agent for commercial broiler production when administered at feed concentrations of 60-80 ppm.
The findings support the use of narasin in broiler operations to manage coccidiosis.
Narasin offers a viable alternative for coccidiosis control in the poultry industry.