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Effect of heat exposure on the thermoregulatory responses of selected naked neck chickens

C.M. Mazzi et al · Universidade Federal de Minas Gerais, Escola de Veterinária · 2002

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Author / responsible party
C.M. Mazzi et al
Publisher
Universidade Federal de Minas Gerais, Escola de Veterinária
Year
2002
ISSN
1678-4162
ISSN
1678-4162
Language
English
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Ação do estanozolol sobre a histologia renal e hepática em ratos treinados com natação

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The variation in cloacal temperature, body weight loss and expression of the 70 kDa heat shock protein (Hsp70) in three naked neck broiler genotypes during heat stress were studied. Twelve birds of each genotype (Na/Na, Na/na and na/na) were reared to market weight (approximately 2.1kg) at thermoneutral temperature. Six birds from each group served as controls and the remaining six underwent gradual heat stress (from 28ºC to 36ºC). Cloacal temperature and body weight were measured before and after exposure to heat. Liver samples were collected and Hsp70 levels were quantified using western blotting with monoclonal anti-chicken Hsp70 antibody. Heterozygous (Na/na) birds had a significantly lower cloacal temperature variation and less body weight loss during heat stress than the other genotypes. There was no significant difference in the Hsp70 levels among the genotypes. Heterozygous birds (Na/na) appeared to have a slight advantage over the other genotypes during gradual heat stress, perhaps because of a heterotic effect.

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APA 7

al, C. M. E. (2002). Effect of heat exposure on the thermoregulatory responses of selected naked neck chickens. https://doi.org/10.1590/S0102-09352002000100006

MLA

al, C.M. Mazzi et. "Effect of heat exposure on the thermoregulatory responses of selected naked neck chickens." 2002. https://doi.org/10.1590/S0102-09352002000100006.

Chicago

al, C.M. Mazzi et. 2002. "Effect of heat exposure on the thermoregulatory responses of selected naked neck chickens.". https://doi.org/10.1590/S0102-09352002000100006.

Harvard

al, C. M. E. 2002, Effect of heat exposure on the thermoregulatory responses of selected naked neck chickens, Universidade Federal de Minas Gerais, Escola de Veterinária, available at: https://doi.org/10.1590/S0102-09352002000100006 [Accessed 7 Aug. 2026].

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Title
Effect of heat exposure on the thermoregulatory responses of selected naked neck chickens
Author / contributors
C.M. Mazzi et al
Publisher
Universidade Federal de Minas Gerais, Escola de Veterinária
Publication year
2002
ISSN
1678-4162
ISSN
1678-4162
Language
English

Subjects

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Broiler chicken; naked neck genotype; Hsp70 expression; heat stress; cloacal temperature
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