Avaliação comportamental e fisiológica de suínos criados ao ar livre em clima quente

Abstract

Aiming to evaluate animal behavior and blood parameters, such as pigs animal welfare indicators reared outdoors, during the month of February 2014, was conducted an experiment in outdoor installations in the swine sector of UAST/UFRPE, located in Serra Talhada, Pajeú region of Sertão of Pernambuco. The experimental design was a completely randomized design with two treatments and eight repetitions for the evaluation of blood parameters and ten repetitions to evaluate performance. The treatments consisted of two experimental groups, the first group composed of intersection of improved breeds Duroc,Pietran,Large White and Landrace and the second group by native animals Piau breed and undefined breed (SRD) . All animals were pregnant females in second order of pregnancy, with an average weight of 198.66 kg. The evaluated parameters were blood glucose, urea, creatinine and cortisol. Just urea had no significant effect, the other results represented the adaptive differences of different genetic groups. The behavior was conducted during three consecutive days with observations every ten minutes in a 24 hours period. The days were divide into four periods:, morning, noon, night and morning. In the description of environmental influence on the physiology of the animals were measured via rectal temperature digital thermometer, and respiratory frequency obtained by counting the movements of the animals in the resting edge for one minute. To assess the climatic variables during the trial period have been installed in a weather shelter the psychrometer and the black globe thermometer (Gn). Readings were take at intervals of two hours from the start of the experiment. Every day, the values of maximum and minimum temperatures were record.The animals showed on non-standard behavior for the variables observed, despite the climatic variables accuse temperatures above the right conditions that animals need for better living conditions.