Use of Diverse Cattle Breeds to Understand Marbling Development and Growth for the Production of High-Quality Beef
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The Ohio State University / OhioLINK
2019
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| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=osu1574348508186835 |
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ndltd-OhioLink-oai-etd.ohiolink.edu-osu15743485081868352021-08-03T07:13:15Z Use of Diverse Cattle Breeds to Understand Marbling Development and Growth for the Production of High-Quality Beef Jaborek, Jerad R. Animal Sciences Animals Biology Cellular Biology Genetics Nutrition adipogenesis beef cattle feedlot intramuscular fat Jersey marbling Wagyu The first study investigates implementing a crossbreeding strategy on Jersey dairy farms, where a terminal beef sire would be mated to a proportion of the herd to increase the value of the male offspring compared with purebred Jersey steers. In general, crossbred Jersey cattle, sired by Angus, SimAngus, and Red Wagyu bulls, had a greater ADG and lesser G:F compared with purebred Jersey steers. As a result of the lesser ADG of purebred Jersey steers, they required the greatest amount of time on feed. Crossbred Jersey cattle achieved greater final body weights with fewer days on feed. Purebred Jersey cattle had a lesser backfat thickness, but deposited a greater percentage of kidney fat compared with crossbred Jersey steers. Crossbred Jersey cattle had a greater marbling score and USDA quality grade compared with purebred Jersey steers. The USDA YG equation did a poor job of predicting carcass cutability of all Jersey influenced cattle in this study. Overall, crossbred Jersey cattle had a greater boxed beef price and boxed beef value compared with purebred Jersey steers. Sire selection criteria for Jersey crossbreeding programs should focus on retail yield and should consider the use of growth enhancing technologies to increase muscle deposition. The second study was designed to further investigate marbling development in cattle. Wagyu and Angus sired cattle were compared at a similar age and days spent on feed or at a similar body weight endpoint to compare feedlot performance, carcass composition, and the expression of marbling related genes. Two Wagyu sires were used in this study, one selected for growth (LMR Fukutsuru 729T) and the other selected for marbling ability (OW Yasufuku 229Y). When compared at a similar age and days spent on feed, Angus sired cattle had a greater ADG, DMI, G:F, and off-test weight compared with Yasufuku sired cattle, while Fukutsuru sired cattle were similar to Angus sired cattle, except for having a lesser DMI. Yasufuku sired cattle had a greater marbling score and USDA QG compared with Angus sired cattle. When compared at a similar off-test body weight, Angus sired cattle had a greater ADG, DMI, and G:F, spent fewer days on feed, were younger at harvest, and had a lesser total DMI over the course of the entire study. Yasufuku sired cattle had a greater marbling score, USDA QG, and 6th rib fat thickness compared with Angus sired and Fukutsuru sired cattle. At both endpoint comparisons, Yasufuku sired cattle had a longissimus muscle fatty acid composition that was more desirable compared with Angus sired cattle, while Fukutsuru sired cattle were typically intermediate. Gene expression results may indicate two critical periods of intramuscular adipogenesis initiation at approximately 7 and 17 months of age. The upregulation of lipogenic genes was initiated around 12 months of age and peaked at 14 months of age. The gene expression results of Yasufuku sired cattle exhibited random peaks that may be responsible for preadipocyte proliferation compared with Angus and Fukutsuru sired cattle. 2019 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu1574348508186835 http://rave.ohiolink.edu/etdc/view?acc_num=osu1574348508186835 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
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NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Animal Sciences Animals Biology Cellular Biology Genetics Nutrition adipogenesis beef cattle feedlot intramuscular fat Jersey marbling Wagyu |
| spellingShingle |
Animal Sciences Animals Biology Cellular Biology Genetics Nutrition adipogenesis beef cattle feedlot intramuscular fat Jersey marbling Wagyu Jaborek, Jerad R. Use of Diverse Cattle Breeds to Understand Marbling Development and Growth for the Production of High-Quality Beef |
| author |
Jaborek, Jerad R. |
| author_facet |
Jaborek, Jerad R. |
| author_sort |
Jaborek, Jerad R. |
| title |
Use of Diverse Cattle Breeds to Understand Marbling Development and Growth for the Production of High-Quality Beef |
| title_short |
Use of Diverse Cattle Breeds to Understand Marbling Development and Growth for the Production of High-Quality Beef |
| title_full |
Use of Diverse Cattle Breeds to Understand Marbling Development and Growth for the Production of High-Quality Beef |
| title_fullStr |
Use of Diverse Cattle Breeds to Understand Marbling Development and Growth for the Production of High-Quality Beef |
| title_full_unstemmed |
Use of Diverse Cattle Breeds to Understand Marbling Development and Growth for the Production of High-Quality Beef |
| title_sort |
use of diverse cattle breeds to understand marbling development and growth for the production of high-quality beef |
| publisher |
The Ohio State University / OhioLINK |
| publishDate |
2019 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=osu1574348508186835 |
| work_keys_str_mv |
AT jaborekjeradr useofdiversecattlebreedstounderstandmarblingdevelopmentandgrowthfortheproductionofhighqualitybeef |
| _version_ |
1719456681923969024 |