Identificación de factores asociados a la mortalidad en pollos de la línea Ross Ap durante la primera semana de vida en la granja el Roble del municipio de Curití.

Abstract

The present investigation was developed with the objective of identifying the factors associated with mortality of chickens of the ROSS AP line in the first week of life. In this farm, the altitude and average temperature are 1900 meters above sea level and 21 °C respectively. The birds come from the Ladybird Incubator located in Fresno Tolima. We worked with four sheds and by separate sexing, we obtained an average temperature in transport of 32 °C, an individual body weight in reception of 37.42 grams on average and closing the week of 156 grams on average, the filling of the crop was 89.57% at 24 hours, at the inspection the most relevant case was the dehydration with 321 cases, the average temperature in the sheds was 26.87 °C, relative humidity 64.72; The average concentration of ammonia was 0.074, in the necropsy on the fifth day the most relevant finding was pericarditis with 90 cases, the laboratory results were acceptable for chaff and water, it was found the presence of Pseudomonas spp and E. coli in the swab of pericardium and air sacs, birds were sensitive to Fosfomycin in the antibiogram so that antibiotic treatment was made to decrease the contamination with Fosfomycin at a dose of 30mg/kg in 350 lt of water; at the end of the week the final average weight was 155 grams, the bird gain was 16.91, feed conversion was 1.015 and a percentage of mortality was 3%.