Abstract

RODRIGUEZ, I.; LEIVA, A.; GONZALEZ, D.  and  MESA, A.. Evaluation of productiveparameters in fishedpigswith differentweights. Rev. vet. [online]. 2021, vol.32, n.1, pp.84-88. ISSN 1669-6840.  http://dx.doi.org/10.30972/vet.3215641.

18.

Research was conductedin the department of Itapúa, Paraguay. The objective was to evalúate productive parameters in the porcine line obtained from the Crossing between Large White and Landrace, fished with different weights. The following was analyzed: live weight (LW), hot carcass weight (HCW), coid carcass weight (CCW), hot carcass yield (HCY), coid carcass yield (CCY) and depletion (D), as well as the weights of the thoracic (TVW) and abdominal viscera (AVW) from a total of 6,476 animáis grouped in 21 batches, coming from six supplier farms incorporated to the integrated system of production. Each batch was formed by three categories classified by the hot carcass weight in: category one, until 73 kg; category two, from 73.1 to 79 kg, and category three, with more than 79 kg. Data were analyzed with R statistical software', through the Kolmogorov-Smirnov test it was verified the normality in the distribution of the observations. Then, measures of central tendency and dispersión were estimated, applying variance analysis withbalanced incomplete block design and Tukey test as a post-hoc test. Significant differences were detected in terms of LW, HCW, CCW, standing out category three with the highest registers. As for the HCY and CCY, groups two and three were the ones with the best performance, with identical percentage of evaporation loss, after refrigeration; whereas, category one had the lowest performance in all the analyzed parameters. Two suppliers were characterized by the provisión of animáis with the highest average of LW; only one supplier provided lighter animals, although the HCY and CCY were higher. The viscera weight did not show significant differences among suppliers (p<0,05).

Keywords : pigs; carcass; depletion; yield; visceras.

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