Utilización de diferentes antiparasitarios comerciales en el control de ectoparásitos para cuyes en la Granja Totorillas

Abstract

In the Totorillas farm, property of Decentralized Autonomous Government (GAD) of Guamote Canton in the province of Chimborazo, the use of four external parasite treatments (cypermethrin, ivermectin, doramectin, and abamectin) to control the ectoparasites in guinea pigs was assessed. A completely randomized design (CRD) with 5 replicates combining two factors was used. The experimental unit consisted of 2 guinea pigs per cage. As for the most significant results of productive performance, guineas pigs receiving doramectin treatment showed the following: a final weight (1.08 kg) and weight gain (0.65 kg). Besides, a high consumption of balanced diet showed the best feed conversion (7.05), a good carcass weight (0.80 kg), and a good carcass yield (74.58%). Highly significant differences were showed in the sex factor (P ˂ 0.01): final weight (1.08 kg), weight gain (0.67 kg), and feed conversion (6.91%). Thus, male guinea pigs gave more yield than female ones. As for the interaction, there was the interaction effect only in the carcass yield variable for male and female guinea pigs receiving ivermectin, doramectin and abamectin treatment. These presented the best results against cypermethrin treatment. When assessing the presence of ectoparasites in guinea pigs, the use of doramectin was the most effective. It was controlled after 45 days, and it was the best of all the studied treatments. Doramectin and abamectin treatments showed the best profitability – a cost-benefit relationship of 1.20. Therefore, it is recommended to use doramectin as external parasite treatment for guinea pigs at a dose of 300 mg per animal injecting subcutaneously during the growth and fattening stage. Key words: Parasite treatment, significant, effective, interaction.