INFLUENCIA DE LA ALIMENTACIÓN Y EDAD AL SACRIFICIO SOBRE LA CALIDAD DE LA CANAL EN TERNEROS.

Abstract

Meat is a source of nutrients such as proteins, amino acids, minerals, fats and essential fatty acids that are of interest in people's nutrition, considering that meat consumption is carried out in most of the world. The objective of the research was to evaluate the effect of feeding based on Tithonia diversifolia, Panicum maximum cv and Medicago sativa and the age at slaughter on the quality of the carcass and productive performance in calves, for this a bifactorial design was used, with three treatments, two replicates and two animals per treatment. A control of the zootechnical variables and performance of the carcass of each treatment was carried out at 45 and 90 days; In both cases, the pH, titratable acidity and microbiological parameters of each of the treatments were evaluated. Once this process was carried out, a sensory panel was carried out using the Likert scale with a total of 10 panelists. A statistical analysis was applied using the statistical program InfoStat, where ANOVA analysis of variance was used with a 95% confidence interval. The results of the weight of the animals did not show statistical differences in the initial weight and the weight at 45 days between treatments, while at 90 days significant differences were obtained, with T2 being the best weight with a total of 91.93 kg , with a yield to the carcass of 70.25%. For its part, feed conversion at 45 days was not significant, unlike at 90 days, where T2 was better with an average of 1.06 kg / kg. The results of pH at 45 days presented statistical differences, with T2 being with a greater decrease than reaching a mean of 6.88. While the acidity at 45 and 90 days was not significant. The microbiological analyzes showed that there were no significant differences between the means of each of the treatments. The results of the sensory panel show that there were no significant differences between each of the treatments in terms of the variables color, smell, taste, general appearance and chewiness. In conclusion, it is possible that alfalfa significantly improved the productive yields of cattle