Grazing Treatment Effects on Ultrasound Measures of 12th to 13th Rib Fat Thickness and Longissimus Area11Names are necessary to report factually on available data; however, the USDA does not guarantee or warrant the standard of the product, and the use of the name by the USDA implies no approval of the product to the exclusion of others that may be suitable
| Autor: | G.E. Aiken, Francis M. Rouquette, R.K. Miller |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
geography
geography.geographical_feature_category biology Chemistry business.industry Ultrasound food and beverages Lolium multiflorum Cynodon dactylon Beef cattle biology.organism_classification Pasture Animal science Longissimus Agronomy Grazing Feedlot Animal Science and Zoology business Food Science |
| Zdroj: | The Professional Animal Scientist. 18:368-372 |
| ISSN: | 1080-7446 |
| Popis: | The management of cattle backgrounded on pasture for the feedlot could have residual effects on eventual carcass characteristics, but it is not known if variation of ultrasound measures is sufficiently low to determine grazing treatment effects. Yearling steers were ultrasonically scanned at the start and finish of two grazing experiments to determine whether 12th to 13th rib fat thickness (FT) and longissimus area (LA) could be estimated with ultrasound to determine treatment effects on these measures and to evaluate trends in the measurements over a range of ADG. One grazing trial was conducted with bermudagrass [Cynodon dactylon (L.) Pers.] using yearling steers to evaluate the effects of increasing levels of corn supplementation (CS; 0, 0.5, 1.4, and 2.3 kg/d per steer) on ADG. The second trial was conducted with a 'Maton'rye (Secale Cereale L.) and 'TAM90' ryegrass (Lolium multiflorum L.) mixture to determine effects of stocking rate (SR; 3.7, 5.2, and 6.7 steers/ha) on ADG. For the CS study, there were linear increases in FT (P |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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