Relações entre medidas ultrassonográficas e a composição da carcaça de cordeiros

Abstract

The demand for higher quality products is growing, and the end consumer is always looking for quality products that have a guarantee seal, In this way, the meat market grew and as a consequence the pressure to deliver a better-quality product to the consumer increased, needing to meet the customer's desirable standard. Therefore, the objective of this study was to verify the correlations of ultrasound techniques in the Longíssimus dorsi muscle between the 12th and 13th rib, based on ultrasound measurements to estimate the tissue composition of the lamb carcass, The experiment was carried out in the farm sector at the Federal University of Grande Dourados. We used 30 commercial mixed breed lambs (½ Dorper blood the design used was a randomized block (with weight and sex blocking), these animals were distributed into 6 blocks, Images of lambs were collected by ultrasound in the region of the longissimus dorsi muscle between the 12th and 13th coast, Subsequently, the ultrasound images were evaluated, taking measurements of the rib eye area (AOL) and subcutaneous fat thickness (EGS). For the AOLcar measure, females presented higher values for this variable with an average of 15,79 compared to males with 13,47, The ratio muscle: fat with total fat and muscle: fat with subcutaneous fat, males and females showed negative correlation values (-0,99) and (-0,89). Assessment measures using ultrasound can be used to evaluate AOL and EGS can be used as tools in the evaluation of carcass characteristics in animals in vivo, as they are easy to measure.