Influence of temperature humidity index on skin temperature of west african dwarf goats raised in Nigeria
Keywords:
Ambient temperature;Humidity;Season;Skin temperature;THI;Thermal comfort levelAbstract
The influence oftemperature humidity index (THI) on skin temperature of West African Dwarf(WAD) goats was evaluated. Based on the recordings of farm ambient temperatureand relative humidity, the study was conducted during rainy and dry seasons.Data obtained for temperature and relative humidity were used to develop anindex for measuring thermal comfort level for the goats. Thigh, ear and necktemperatures of the animals were measured. One-way analysis of variance (ANOVA)was used to compare variations in the skin temperature of the animals asinfluenced by ambient temperature and relative humidity. Duncan’s MultipleRange test was used to separate the means where significance was indicated. Thesummary statistics for climatic variations were also calculated within eachseason. The skin temperature of the goats was significantly (p<0.001;p<0.05) affected by THI. Exposure of the animals to high ambient temperatureand relative humidity resulted in significant increase in skin temperaturesites at the neck, ear and thigh of the animals. The goats employ surface areasas a means to dissipate heat load away from their body.
References
Bouraoui, R., Lahmar, M., Majdoub, A., Djemali, M., Belyea, R., 2002. The relationship of temperature-humidity index with milk production of dairy cows in a Mediterranean climate. Anim. Res., 51, 470-491.
Habeeb, A.A., Marai, I.F.M., Kamal, T.H., 1992. Heat stress. In: Philips, C., Piggens, D. (Eds.).Farm Anim. Env. C.A.B. Int., pp. 27–47.
Karaman, S., Tarhan, S., Ergunes, G., 2007. Analysis of indoor climatic data to assess the heat stress of laying hens. Int. J.Nat. Eng. Sci., 1 (2), 65-68.
Lukefahr, S.D., 1998. Review of global rabbit genetic resources: special emphasis on breeding programs and practices in the lesser developed countries. Anim. Genet. Res. Inform., 23, 49-67.
Marai, I.F.M., Ayyat, M.S., Abd El-Monem, U.M., 2001. Growth performance and reproductive traits at first parity of New Zealand White female rabbits as affected by heat stress and its alleviation, under Egyptian conditions. Trop. Anim. Health Prod., 33, 457–462.
Marai, I.F.M., Bahgat, L.B., Shalaby, T.H., Abdel-Hafez, M.A., 2000. Fattening performance, some behavioural traits and physiological reactions of male lambs fed concentrates mixture alone with or without natural clay, under hot summer of Egypt. Ann. Arid. Zone., 39 (4), 449–460.
Marai, I.F.M., El-Darawany, A.A., Fadiel, A., Abdel-Hafez, M.A.M., 2007. Physiological traits as affected by heat stress in sheep—A review. Small Rum. Res., 71, 1–12
Marai, I.F.M., Habeeb, A.A.M., 1998. Adaptation of Bos taurus cattle under hot climate conditions. Ann. Arid. Zone., 37 (3), 253–281.
Oni, O.O., 2003. Breeds and Genetic improvement of small ruminants (sheep and goats). A paper presented at the training workshop on small ruminant production, NAPRI, ABU, Shikka. Niger. January., 16-18th, 2003.
Osuagwuh, A.I.A., Akpodje, J.U., 1982. West African Dwarf (FoutaDjallon) goat. 1. Causes of early mortality. Int. J.Goat Sheep Res.,1, 303-309.
Ozoje, M.O., 2002. Incidence and relative effects of qualitative traits in West African Dwarf Goats. Small Rum. Res., 43, 97-100.
SAS., 2004., SAS/STAT. User’s Guide (release 8.03). SAS Institute, Cary North Carolina. USA.
St-Pierre, N.R., Cobanov, B., Schnitkey, G. 2003. Economic losses from heat stress by US livestock industries. J. Dairy. Sci., 86, ( E. suppl.), E52-E77.
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Copyright (c) 2014 M. A. Popoola, A. A. Saka, T. A. Olaniyi, M. O. Yahaya, G. L. Adebisi
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