Effect of short-term fattening period and castration method on productivity, serum testosterone, and economic efficacy in Hanwoo cattle
| Autor: | Jun Sang Ahn, Eung Gi Kwon, Hyun Jeong Lee, Ui Hyung Kim, Jeong Il Won, Sun Sik Jang, Byung Ki Park |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Journal of Animal Science and Technology, Vol 65, Iss 1, Pp 149-159 (2023) |
| Druh dokumentu: | article |
| ISSN: | 2672-0191 2055-0391 |
| DOI: | 10.5187/jast.2022.e88 |
| Popis: | The purpose of this study was to evaluate the effects of castration method and short-term fattening periods on Hanwoo cattle. Thirty-two Hanwoo calves (average body weight: 148.4 ± 19.8 kg) were used. The calves were randomly assigned in a 2 × 2 factor according to two castration methods (castration or hemi-castration) and two short-term finishing periods (24 months or 26 months). The final body weight increased significantly as the fattening period increased (p < 0.05), and the average daily weight gain was higher in the hemi-castration groups than in the castration groups (p < 0.05). After surgical castration, testosterone concentration was higher in the hemi-castration group than in the castration group during the entire experimental period (p < 0.05). The rib eye area was wider in the hemi-castration group than in the castration group (p < 0.01).An interaction effect was observed between the castration method and short-term fattening period (p < 0.05). Marbling and auction price scores differed between castration methods and were higher in the castration group than in the hemi-castration group (p < 0.01). Gross receipts and net income increased in the castration group compared to the hemi-castration group (p < 0.01) and showed a tendency to increase with the short-term fattening period, but there was no significant difference. Thus, castration to remove both testicles is essential for economic profit through producing high-quality Korean beef meat, and short-term fattening for 26 months, rather than 24 months, can benefit more by increasing carcass weight and meat quality. |
| Databáze: | Directory of Open Access Journals |
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