The relationship of average backfat thickness of feedlot steers to performance
نویسنده
چکیده
The length of time to keep cattle on feed that maximizes profits is determined by the point when incremental costs equal incremental increases in animal value. The primary cost in a cattle feeding enterprise is ration expense, so in order to effectively project optimal marketing time it is necessary to be able to determine future feed conversion. It is widely considered that feed conversion is related to composition of gain. That is because fat tissue contains only about 10% water compared to 73% water in muscle and the caloric value of a gram of fat is 69% more than that of a gram of protein. Consequently, it has been assumed that the energetic cost of fat accretion is much more than protein.
منابع مشابه
The relationship of average backfat thickness of feedlot steers to performance and relative efficiency of fat and protein retention.
Selection for growth and improved carcass merit has resulted in cattle that are variable in composition of gain during the finishing phase. This study assessed the relative performance among cattle with different levels of initial backfat thickness. It also exploited the ability to track carcass composition in the live animal with ultrasound estimates of backfat and marbling. A procedure was de...
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