Influence of temperature and exercise on growth performance, muscle, and adipose tissue in pacus (Piaractus mesopotamicus)

Autor(es)

dos Santos, Vander Bruno ^[1] ; Miranda de Oliveira, Marcelo Wendeborn ^[2] ; Simoes Salomao, Rondinelle Artur ^[3] ; Santos, Rosemeire de Souza ^[4] ; de Paula, Tassiana Gutierrez ^[5] ; Pai Silva, Maeli Dal ^[5] ; Mareco, Edson Assuncao ^[4]

Afiliação do(s) autor(es)

^[1] Inst Pesca APTA SAA, Ave Francisco Matarazzo 455, BR-61070 Sao Paulo - Brazil

^[2] APTA Polo Alta Sorocabana, Presidente Prudente, SP - Brazil

^[3] UNESP CAUNESP, Jaboticabal - Brazil

^[4] Univ Oeste Paulista UNOESTE, Presidente Prudente, SP - Brazil

^[5] UNESP, Dept Morfol, Boutcatu - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Thermal Biology; v. 69, p. 221-227, OCT 2017.
• Citações Web of Science: 3

Resumo

The aim of this study was to evaluate the effects of temperature and swimming exercise on fish growth in pacus (Piaractus mesopotamicus). Pacus weighing 0.9 - 1.9 g and 2.7 - 4.2 cm in standard length were cultivated at an initial density of 120 fish m(-3) in 3 recirculation systems containing 6 water tanks at a volume of 0.5 m(3) each at temperatures of 24, 28 and 32 degrees C. At each temperature, three tanks were modified to generate exercise activity in the specimens and force the fish to swim under a current speed of 27.5 cm s(-1). At the end of the experiment, the following metrics were evaluated: fish performance, morphometry (length, width, height and perimeter in different body positions), and the diameter and density of muscle and subcutaneous ventral adipose tissues. At 28 degrees C, pacus were both heavier and had greater weight gain after 240 days of cultivation. Additionally, exercise improved the feed conversion. An increase of 4 degrees C (30 degrees C) did not provide any improvement in the performance of the fish. However, swimming exercise improved the performance of pacus, providing increases of 38% and a 15% improvement in feed conversion. Both temperature and exercise influenced the body morphology (especially in the caudal region) and the cellularity of white and red muscle fibers and adipocytes. (AU)

• Processo FAPESP: 12/11277-0 - Influência da temperatura e exercício sobre o desempenho, crescimento muscular e características de carcaça de pacu (Piaractus mesopotamicus)
• Beneficiário: Vander Bruno dos Santos
• Modalidade de apoio: Auxílio à Pesquisa - Regular