| Autor: |
Stephen B. Smith, M. A. Brooks, David K. Lunt, Chang-Bon Choi, R.K. Miller, C.W. Choi |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
The Professional Animal Scientist. 27:385-393 |
| ISSN: |
1080-7446 |
| Popis: |
A study was conducted based on the proposal that cattle raised to a constant carcass weight would have comparable carcass composition regardless of being calf fed (CF) or yearling fed (YF). Twenty-four Angus steers were assigned to CF and YF groups and allotted to initial, intermediate, and terminal sampling periods (n = 4 for all groups and periods). Steers from the CF group were slaughtered at weaning (8 mo of age) or after consuming a corn-based diet for 4 mo (12 mo of age) or 8 mo (16 mo of age). Steers from the YF group were all pasture fed for 4 mo and then slaughtered either at 12 mo of age or after consuming the corn-based diet for 4 mo (16 mo of age) or 5.5 mo (17.5 mo of age). Carcass weight, percentage KPH, and YG values were the same in the terminal CF and YF groups. Marbling score, ribeye area, and fat thickness over the 12th thoracic rib increased quadratically (P ≤ 0.02) at a decreasing rate over time and were not different between CF and YF steers. M. longissimus thoracis i.m. lipid and i.m. adipocyte size increased (P ≤ 0.01) over time but did not differ between CF and YF steers. Slip point temperature of s.c. adipose tissue lipids decreased (P |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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