RETRACTED ARTICLE: Regional differences in the surface temperature of Naked Neck laying hens in a semi-arid environment

2012 ◽  
Vol 57 (3) ◽  
pp. 377-380 ◽  
Author(s):  
João Batista Freire de Souza ◽  
Alex Martins Varela de Arruda ◽  
Hérica Girlane Tertulino Domingos ◽  
Leonardo Lelis de Macedo Costa
2014 ◽  
Vol 58 (7) ◽  
pp. 1709-1709
Author(s):  
João Batista Freire de Souza ◽  
Alex Martins Varela de Arruda ◽  
Hérica Girlane Tertulino Domingos ◽  
Leonardo Lelis de Macedo Costa

2014 ◽  
Vol 59 (1) ◽  
pp. 121-125 ◽  
Author(s):  
João Batista Freire de Souza ◽  
Vanessa Raquel de Morais Oliveira ◽  
Alex Martins Varela de Arruda ◽  
Aurora de Melo Silva ◽  
Leonardo Lelis de Macedo Costa

2010 ◽  
Vol 39 (4) ◽  
pp. 837-844 ◽  
Author(s):  
Débora Andréa Evangelista Façanha ◽  
Roberto Gomes da Silva ◽  
Alex Sandro Campos Maia ◽  
Magda Maria Guilhermino ◽  
Angela Maria de Vasconcelos

This work aimed to study the annual variation of temperature of the coat surface and other traits of coat in Holstein cows managed in a tropical environment by separately considering black coat and white coat. It was measured the coat thickness (mm) characteristic, hair length (mm), hair number (hair/cm²) and coat surface temperature on 191 crossbred cows with 7/8 and 31/32 Holstein composition distributed in 3 herds in a semi-arid environment. Less dense coats with shorter, flattened hair occurred predominantly in March, a time coinciding to high levels of solar radiation. This type of coat shows low resistance to the flux of latent and sensitive heat through the skin, thus favoring heat loss. The black coat surface temperature was on average 4ºC higher than that of the white one during all the year and its variation followed that of the mean radiant temperature. The models developed to predict the effective thermal conductivity of the coat must take these differences into account because the thermal gradient parallel to the skin surface is not negligible for Holstein cows under the sun in a tropical environment, as well as the other traits.


2012 ◽  
Vol 436-437 ◽  
pp. 1-12 ◽  
Author(s):  
Marc E. Ridler ◽  
Inge Sandholt ◽  
Michael Butts ◽  
Sara Lerer ◽  
Eric Mougin ◽  
...  

2013 ◽  
Vol 58 (6) ◽  
pp. 1259-1264 ◽  
Author(s):  
João Paulo Araújo Fernandes de Queiroz ◽  
João Batista Freire de Souza ◽  
Hiagos Felipe Ferreira de Lima ◽  
Monik Kelly de Oliveira Costa ◽  
Leonardo Lelis de Macedo Costa ◽  
...  

2007 ◽  
Vol 23 (5) ◽  
pp. 546-555 ◽  
Author(s):  
R. Burgos ◽  
L.J. Odens ◽  
R.J. Collier ◽  
L.H. Baumgard ◽  
M.J. VanBaale

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