title: Gelatin in replacement of bovine heart in feed training of Lophiosilurus alexandri in different water salinities.
abstract: The aim of this study was to evaluate commercial gelatin in the total replacement of bovine heart in feed training of "pacamã" Lophiosilurus alexandri in different water salinities. A completely randomized experimental design, in a 2 × 3 factorial arrangement, was performed using two types of moist ingredients (bovine heart and gelatin) and three water salinities (0.0; 2.0 and 4.0 g of salt L(-1)) with three replications. Juveniles (2.39 ± 0.08 cm standard length and 0.20 ± 0.03 g of weight) were conditioned to accept commercial diets by the technique of the gradual transition of ingredients. At the end of 36 days no differences were observed to weight gain, length gain and specific growth rate. The feed training efficiency was better (P < 0.05) with the gelatin use, 100.0%. There was a negative effect of salinity on the survival rate and management efficiency in the concentration of 4 g of salt L(-1), with values of 58.6 ± 12.0 % and 58.0 ± 12.0 %, respectively. Lophiosilurus alexandri juveniles could be feed-trained to accept commercial diets with gelatin in the total replacement of bovine heart in freshwater or salinity of 2 g of salt L(-1).
authors.affiliation: Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, MG, Brazil.
authors.forename: Ana Lucia
authors.initials: AL
authors.lastname: Salaro
authors.affiliation: Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, MG, Brazil.
authors.forename: José C
authors.initials: JC
authors.lastname: Oliveira Junior
authors.affiliation: Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, MG, Brazil.
authors.forename: Frederico W
authors.initials: FW
authors.lastname: Lima
authors.affiliation: Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, MG, Brazil.
authors.forename: Renato B
authors.initials: RB
authors.lastname: Ferraz
authors.affiliation: Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, MG, Brazil.
authors.forename: Marcelo D
authors.initials: MD
authors.lastname: Pontes
authors.affiliation: Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, MG, Brazil.
authors.forename: Daniel A V
authors.initials: DA
authors.lastname: Campelo
authors.affiliation: Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, MG, Brazil.
authors.forename: Jener A S
authors.initials: JA
authors.lastname: Zuanon
authors.affiliation: Departamento de Zootecnia, Laboratório de Aquacultura, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
authors.forename: Ronald K
authors.initials: RK
authors.lastname: Luz
mesh_terms: D000821:Animal Feed; D000818:Animals; D017756:Aquaculture; D002397:Catfishes / Q000145:classification / Q000254:growth & development*; D002417:Cattle; D005780:Gelatin / Q000008:administration & dosage*; D006321:Heart; D008461:Meat Products; D054712:Salinity; D013997:Time Factors; D015430:Weight Gain
chemical_list: D005780:Gelatin