Evaluación del uso de anabólicos en toretes de engorde mestizos.

Abstract

The national average for weight gain in crossbreed bulls is 620 grams/day; however, in the Amazon region, livestock activity faces problems such as pastures deficient in minerals and protein, and a large part of this area is considered a reserve due to the animal and plant diversity that covers aquaculture and land areas. Therefore, the objective of this research was to evaluate the use of anabolic in crossbred fattening bulls from Rancho Los Reyes located in the community of La Mariscal, Joya de los Sachas in the province of Orellana. The methodology implemented had a quantitative approach with an experimental design, using a completely randomized block selection of three groups of eight animals each, a control group with Vitamins plus Ivermectin (T1) and two groups with anabolic, Zeranol and Ivermectin plus Vitamins (T2) and Testosterone, plus Vitamins and Ivermectin (T3), evaluating the initial, fortnightly, and final weight and the cost/benefit ratio during a period of ninety days. As a result, it was observed that T2 animals presented a better final weight gain and profitability per flock, T2 with 87.63 kg compared to T1 with 32.75 kg and T3 with 61.13 kg; in addition, T2 expected 26.30 US dollars for each dollar invested, in contrast to T3 and T1 with 19.57 and 17.70 US dollars for each dollar invested, respectively. It is concluded that, the use of anabolic in crossbred bulls was effective and presented significant results in the Amazonian reality so that productive parameters can be improved through these, such as Zeranol. Finally, it is recommended the implementation of better-quality forages and the supplementation with vitamins and minerals that allow a productive increase.