Abstract
Comparison of Ultrasound and Actual Beef Carcass Measurements as Influenced by Stockering Performance and Finishing System
Highlights
Environmental variation clearly impacts livestock performance in forage based production systems, including stockering and pasturefinishing systems
Ultrasound measures for LM area (USREA), Rib Fat (US-rib fat (RF)), Rump Fat (US-RP), and % Intramuscular Fat (US-IMF) were taken on all animals throughout the study on scheduled weigh dates by the same national centralized ultrasound processing lab (CUP) certified technician and utilizing an Aloka 500 V real-time ultrasound unit equipped with a 17 cm, 3.5 MHz linear array transducer
The ultimate goal of this research effort was to determine the ability of ultrasound technology to identify in real-time, treatment effects on carcass parameters by comparing those measurements with actual carcass and laboratory measurements
Summary
Environmental variation clearly impacts livestock performance in forage based production systems, including stockering and pasturefinishing systems. Drouillard and Kuhl [1] referred to the high degree of segmentation within the beef industry and stated various nutritional and management regimens implemented prior to feedlot finishing could have profound impacts on carcass quality and consumer acceptability. They expressed the need for more thorough understanding of the interactions among stocker nutrition and management, finishing performance, carcass traits and consumer acceptability. Better understanding of these interactions would be especially beneficial to grass-fed and smaller scale feedlot sectors, when consideration is given to their need for animal liquidation based on harvest window rather than physiological end point
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