ESTIMATES OF THE COEFFICIENT OF VARIATION IN EXPERIMENTS WITH FINISHING BEEF SHEEP IN CONFINEMENT

• DOI: 10.22533/at.ed.973242202053

• Palavras-chave: agricultural experimentation, classification ranges, precision.

• Keywords: agricultural experimentation, classification ranges, precision.

• Abstract:

  In agricultural experimentation, in general, researchers estimate the precision of experiments using the coefficient of variation (CV) through works suggesting classification ranges of values ​​considering the mean, standard deviation and CV values. In this work, the objective was to study the distribution of CV values ​​of experiments with sheep finished in confinement, proposing ranges that guide researchers in the evaluation of studies. CV data were collected from studies published in Brazilian journals, with emphasis on beef sheep, addressing: weight gain, feed intake, feed conversion, digestibility, ingestive behavior, hot carcass weight, hot carcass yield, weight loss by cooling, loin eye area, fat thickness, final pH (24 hours post-slaughter), cooking weight loss, water holding capacity, shear force, moisture, ash, meat proteins and lipids. Ranges of CV values ​​were obtained for each variable based on the normal distribution, classifying them as low, medium, high and very high. The results obtained indicated that ranges of CV values ​​differed among the different variables, presenting wide variation, therefore, it is necessary to use a specific evaluation range for each variable.

• Número de páginas: 12