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- Title
USO DA SOMATOTROPINA BOVINA RECOMBINANTE (rbST) EM VACAS MESTIÇAS: UMA REVISÃO.
- Authors
Barbosa da Silva, Coralline; Mendes Ruas, José Reinaldo
- Abstract
Most studies on the use of recombinant bovine somatotropin (rbST) were conducted in countries with temperate climates using Bos taurus animals and the entire use protocol was based on such animals and extrapolated to crossbred animals (Bos taurus x Bos indicus) in tropical environments. However, there are different characteristics in the milk production curve and some physiological aspects that differentiate the crossbred from those cattle. Therefore, the establishment of specific standards for the use of rbST for crossbred cattle can improve efficiency, reduce costs, and expand the use of technology to Brazilian systems. Establishing dosage adjustment, the interval, the best time to start and end the application, evaluating the best financial return from use on the productive system, as well as the productive and reproductive responses of the cows can help foster the adequacy of the use of technology in the production system of crossbred dairy cattle. The purpose of this review is to identify criteria to be considered for the use of rbST in crossbred cows in order to enhance the strategy of using it. The use of rbST promotes a noticeable increase in milk production; however, further details of the hormone use protocol for crossbred cows need to be evaluated since some characteristics of the milk curve are different for crossbred animals.
- Publication
Arquivos de Ciências Veterinárias e Zoologia da Unipar, 2020, Vol 23, Issue 2, p1
- ISSN
1415-8167
- Publication type
Article
- DOI
10.25110/arqvet.v23i2cont.2020.6650