Article (Scientific journals)
Avaliação da imobilidade tônica em codornas de corte via análise de sobrevivência
Caetano, Giovani da Costa; Fonseca e Silva, Fabyano; Silva, Luciano Pinheiro et al.
2018In Arquivo Brasileiro de Medicina Veterinaria e Zootecnia, 70 (3), p. 1009-1012
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Keywords :
Coturnix coturnix; survival curves; kaplan meyer; logrank test
Abstract :
[en] Tonic immobility (TI) is a way to measure fear, as characterized by the reduced capacity to respond to external stimuli. The time spent in TI indicates the level of fear. Since TI is measured as the time until event occurrence, survival analysis stands out as a suitable statistical method to treat these data. We aimed to investigate the influence of possible factors (lines, sex and age) on fear behavior in meat quail (Coturnix coturnix) measured through TI by using survival analysis (non parametric Kaplan-Meyer method via logrank test). The dataset was composed by TI information provided by 50 animals from each line (UFV1 and UFV2) in each age (14 and 28 days of age), totalizing 200 records. Despite the slight difference between the two evaluated ages, there was no significance for this factor between each studied line, UFV1 (P= 0.1493) and UFV2 (P= 0.2583). The logrank test indicated significant difference (P= 0.0407) between levels of line/sex groups at 14 days of age. We noted that males from UFV2 line presented higher fear behavior in relation to males from UFV1 line. No significant differences were observed for this factor when considering 28 days of age.
Disciplines :
Animal production & animal husbandry
Author, co-author :
Caetano, Giovani da Costa
Fonseca e Silva, Fabyano
Silva, Luciano Pinheiro
de Paula, Camila
Texeira Silva, Hugo
De Paiva, José Teodoro ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition
Crispin Soares, Aline Camporez
Mariano, William Heleno
Language :
Portuguese
Title :
Avaliação da imobilidade tônica em codornas de corte via análise de sobrevivência
Alternative titles :
[en] Tonic immobility evaluation in meat quail via survival analysis
Publication date :
May 2018
Journal title :
Arquivo Brasileiro de Medicina Veterinaria e Zootecnia
ISSN :
0102-0935
eISSN :
1678-4162
Publisher :
Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
Volume :
70
Issue :
3
Pages :
1009-1012
Peer reviewed :
Peer reviewed
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