Impact of exposure time to harsh environments on physiology, mortality, and thermal comfort of day-old chickens in a simulated condition of transport

International Journal of Biometeorology
Frederico Márcio C VieiraKésia O Silva-Miranda

Abstract

The aim of this study was to assess the variation of physiological responses and mortality of day-old chicks subjected to different thermal conditions and exposure times during simulated transport. For this purpose, day-old chicks (n = 900) were used and subjected to simulated conditions of transport in a climate chamber. The experimental design was a completely randomized block design, with the structure of the treatments in a 3 × 3 factorial scheme (thermal ranges and time intervals) and each level of containers considered a block. The physiological variables used in this trial were body weight, respiratory rate, cloacal temperature, average surface temperature, and gene expression of heat shock protein (HSP70). Regarding body weight, a small variation was observed between treatments (P > 0.05). The animals subjected to the heat treatment exhibited respiratory rates above 100 movements per minute (P < 0.05), average cloacal temperatures above 44.7 °C, surface temperatures above the comfort zone (greater than 39.6 °C; P < 0.05), and increased gene expression of HSP70 (P < 0.001), especially after 3 initial hours of exposure. In addition, the heat treatment lead to increased mortality of the animals (over 6%). Also in the cold ...Continue Reading

References

Sep 23, 2006·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Jessica L StaibScott K Powers
Mar 4, 2009·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Ahmad Mujahid, Mitsuhiro Furuse
Sep 19, 2009·Poultry Science·K SahinA S Prasad
Dec 23, 2009·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Ahmad Mujahid
Mar 17, 2010·Current Biology : CB·Nikolay NinovEnrique Martín-Blanco
Dec 13, 2012·Journal of Animal Science and Biotechnology·Yongwei WangDan Liu
Jul 4, 2013·International Journal of Biometeorology·Sheila Tavares NascimentoFrederico Marcio Corrêa Vieira
May 2, 2017·Research in Veterinary Science·Leonie JacobsFrank Andre Maurice Tuyttens

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Citations

Jan 18, 2020·Sensors·Xiaodong DuTomas Norton
Sep 25, 2020·International Journal of Biometeorology·Sérgio Luis de Castro Júnior, Iran José Oliveira da Silva
Aug 30, 2020·Animals : an Open Access Journal From MDPI·Suresh Neethirajan

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