Fattening performance and carcass traits of implanted and supplemented grassfed bulls
| Autor: | Nelson Huerta-Leidenz, Nancy Jerez-Timaure, Susmira Godoy, Carlos Rodríguez-Matos, Omar Araujo-Febres |
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| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Revista Científica, Vol 31, Iss 2 (2021) |
| Druh dokumentu: | article |
| ISSN: | 0798-2259 2521-9715 |
| DOI: | 10.52973/rcfcv-luz312.art2 |
| Popis: | Ninety-nine uncastrated males were randomly distributed into four grazing groups to examine variation in growth and carcass traits, due to the implant regime [Implantation of 72 miligrams (mg) of Ralgro® at day (d) 0 followed by its reimplantation at d 90 versus implantation of Revalor® at d 0 followed by 72 mg of Ralgro® at d 90)], and suplementation type [mineral supplementation (MS) versus strategic supplementation (SS)]. With a 2 x 2 factorial arrangement, the analysis of variance included the treatments and their interaction (implant regimen x supplementation) as fixed effects, and the breed type as a random effect. The interaction was not significant; neither did the implant regimen on any growth trait (P > 0.05). Compared to MS, the SS group had a greater daily weight gain (779 vs. 541 grams; P 0.05). The use of aggressive implant regimens to improve growth or carcass characteristics of grazing bulls is not justified. SS is a feasible practice to improve fattening performance of grazing bulls but no beneficial impact on their carcass quality was expected. |
| Databáze: | Directory of Open Access Journals |
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