Abstract

LEVA, P.E et al. Bienestar en sistemas de engorde de corderos: indicadores de fisiológicos y de comportamiento. FAVE. Secc. Cienc. agrar. [online]. 2014, vol.13, n.2. ISSN 1666-7719.

SUMMARY Welfare system fattening lambs: physiological indicators and behavior During summer 2013 conducted a test fattening lambs in order to assess welfare in both management systems: 1. A poultry; 2. in box. Were randomly selected eight lambs to each system, maintaining similar weight and age in each. Weekly and measurements taken every 4 hours were: rectal temperature, respiratory frequency, using a thermometer and a stethoscope. Same weight gain was evaluated. Standing and lying: In addition behavioral observations were performed panting, ruminating in the shade and sun, besides eating behaviors Analysis of variance was used to determine significant differences. The respiratory rate and rectal temperature did not differ between treatments. At the time variation detected, cosinor methodology was used to determine circadian rhythm. Student t test was used to assess differences in weight gain. No treatment effect on weight gain was detected during 3 consecutive days every week behavioral observations were performed using the methodology of Martin and Bateson. They contingency tables were prepared and analyzed with chi square. Adjustment to circadian rhythm, only seen one day treatment box. A significant effect of treatment and behavior (p <0.001) was detected. With the results obtained in this study does not allow us to infer a difference between the proposed systems

Keywords : Rhythm circadian; Management systems; Behavior.

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