HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Oviedo-Rondón, E. O. Articles by Losa, R. Search for Related Content PubMed Articles by Oviedo-Rondón, E. O. Articles by Losa, R.

Responses of Coccidia-Vaccinated Broilers to Essential Oil Blends Supplementation up to Forty-Nine Days of Age

E. O. Oviedo-Rondón^*,, S. Clemente-Hernández^*,, P. Williams and R. Losa

^* Stephen F. Austin State University, Nacogdoches, Texas 75962
Department of Poultry Science, North Carolina State University, Raleigh, North Carolina 27695-7608
Universidad Autonoma de Chihuahua, Chihuahua, México
Akzonobel/Crina S.A., Rue de la Combe 15, 1196 Gland, Switzerland

Correspondence: E. O. Oviedo-Rondón, E-mail: edgar_oviedo{at}ncsu.edu

Coccidiosis control may become a greater problem as the use of growth-promoting antibiotics (GPA) and ionophores declines. Vaccination with live oocysts may turn into a popular alternative to the use of coccidiostats in broilers, although cocci vaccination is frequently linked to temporary lower performance in young flocks. This experiment evaluates the dietary supplementation of 2 specific essential oil (EO) blends (Crina Poultry and Crina Alternate), either as alternatives to GPA and ionophores (BMD + Coban) or as feed additives that help to improve the performance of cocci-vaccinated broilers. Live performance and lesion scores were observed. These 2 specific EO blends differ in their efficacy to promote growth. Chickens that were not cocci vaccinated and were fed Crina Poultry had better feed conversion ratio (FCR) than the unmedicated control treatment in the starter period. The same EO improved FCR in cocci-vaccinated birds in the finisher period in comparison to the negative control group, but those responses were not significantly different from other treatments or significant at 49 d of age. No significant differences were observed in lesion scores at 37 d. Diets supplemented with a GPA-ionophore combination consistently supported the best BW gain and FCR in each period and the entire grow-out period. No significant beneficial or deleterious effects on live performance were observed due to these specific EO blends in cocci-vaccinated broilers.

Key Words: broiler chicken • feed additive • cocci vaccination • essential oil • coccidiosis

This article has been cited by other articles:

				M. E. Hume, S. Clemente-Hernandez, and E. O. Oviedo-Rondon Effects of Feed Additives and Mixed Eimeria Species Infection on Intestinal Microbial Ecology of Broilers Poult. Sci., December 1, 2006; 85(12): 2106 - 2111. [Abstract] [Full Text] [PDF]