Evaluation of oocyst shedding of Eimeria maxima and Eimeria acervulina in broiler chickens

  1. Lauren Laverty 1
  2. Roberto Señas-Cuesta 1
  3. Sergio Martínez-González 2
  4. Callie Selby 1
  5. Xochitl Hernandez-Velasco 1
  6. Christine Vuong 1
  7. Billy Hargis 1
  8. Guillermo Tellez-Isaias 1
  9. Danielle Graham 1
  1. 1 University of Arkansas
  2. 2 Universidad Autónoma de Nayarit
    info

    Universidad Autónoma de Nayarit

    Tepic, México

    ROR https://ror.org/0576q1t15

Aldizkaria:
Abanico veterinario

ISSN: 2007-428X,  2448-6132

Argitalpen urtea: 2020

Alea: 10

Zenbakia: 1

Mota: Artikulua

DOI: 10.21929/ABAVET2020.20 DIALNET GOOGLE SCHOLAR lock_openDialnet editor

Beste argitalpen batzuk: Abanico veterinario

Garapen Iraunkorreko Helburuak

Laburpena

The purpose of the present study was to evaluate the day and the time of sample collection of an experimental challenge with Eimeria maxima (EM) and Eimeria acervulina (EA) in broiler chickens. Oneday old male Cobb-Vantress broiler chickens were randomly allocated to one of three groups with ten replicates (n=8 chickens/replicate). Chickens were placed in battery cages with a controlled ageappropriate environment: Group 1) Negative control (no challenge or treatment); 2) Challenge control (Eimeria challenge only); 3) Challenge + Salinomycin. Challenged chickens were orally gavaged with the mixed culture of EM/EA (10,000 sporulated EM containing 4% wild-type EA) at 14 days of age. Performance parameters were recorded at days 7, 14, 20, and 23. Lesions scores were recorded post-mortem on days 20 and 23. Oocyst per gram (OPG) was performed on days six, seven, and eight post-challenge, and samples were collected at 9:00 AM and 6:00 PM on each day, respectively. Oocyst counts were significantly different (P < 0.05) between morning and afternoon on day six post coccidia challenge. The results of this study show that the day and the time at which samples are collected can have a significant effect on the reliability and validity of data

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