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Ciência e Agrotecnologia
On-line version ISSN 1981-1829
SOUZA, Bonifácio Benicio de et al. Superficial temperature and index of tolerance to the heat of goat of different genetic groups in semi-arid. Ciênc. agrotec. [online]. 2008, vol.32, n.1, pp. 275-280. ISSN 1981-1829. http://dx.doi.org/10.1590/S1413-70542008000100039.
One aimed with this work to determine the superficial temperature and the index of tolerance to the heat of goats (F1) resultants of crossings among these breed, Boer, Savanna, Kalahari, Anglo Nubiana and Moxotó, with goat in no definite breed of the northeast area. Thirty goats were used, with medium age of six months and medium weight of 25,17kg being six of each genetic group: ½Boer + ½SRD (BS), ½Anglo-Nubiana + ½SRD (ANS), ½Savana + ½SRD (SS), ½Kalarari + ½SRD (KS) and ½Moxotó + ½SRD (BAD), maintained in confinement regime. The studied parameters were the superficial temperature and the index of tolerance to the heat (ITC). One verified that the genetic groups presented significant difference for the superficial temperature, though ITC went similar for all. So, the use of these genetic groups to increase the goats productivity in the semi-arid can be advised.
Keywords : Index of tolerance to the heat; thermal comfort; heat stress.