Banca de QUALIFICAÇÃO: RÔMULO PESSOA GENUINO DE OLIVEIRA

INCREASING LEVELS OF INCLUSION OF PYROLENIC EXTRACT IN DIETS OF PIGS IN THE FINISHING PHASE

 

 

Evaluation of the use of eucalyptus pyroligneous extract (Eucalypto urugrandis) on performance, meat quality, toxicity in finishing pigs

 

The objective of this study was to evaluate the effects of the inclusion of eucalyptus (Eucalyptus urugrandis) pyroligneous extract (PE) on the performance, meat quality and possible toxicity on finishing pigs. Twenty-four crossbred animals (Large With, Landrace, Pietran and Duroc), castrated males, with an average initial weight of 56.4 ± 2.1 kg, were used. The animals were housed individually in experimental sheds with semi-automatic feeders and nipple drinkers. The experimental diets consisted of corn, soybean meal, vegetable oil and commercial core and supplemented with increasing levels of pyroligneous extract (0; 1; 2 and 3%). The animals were weighed every 15 days to evaluate the performance data: daily feed intake (CRD), daily weight gain (GPD) and feed conversion. At the end of the experiment, the animals were slaughtered and the quantitative and qualitative parameters of the carcasses were measured. No statistical effects were observed due to the increased inclusion of EP (P>0.1) on the parameters of daily weight gain and total weight gain, and parameters of meat quality and presence of toxicity with the inclusion of EP levels, but there was an improvement in feed conversion with the addition of 2% EP, in addition to a quadratic effect on the parameter backfat thickness (ET2). Pyroligneous extract can be used in up to 3% in the diet of finishing pigs, without causing damage to performance characteristics, meat quality, and without presenting toxic effects.