Protein requirement for Trichogaster lalius, blue variety

Abstract

-The objective of the present study was to evaluate the protein requirement of juvenile Trichogaster lalius, blue variety. The experimental design was of randomised blocks (B1 = initial weight of 1.04±0.05 g and B2 = 1.36±0.02 g), with two replicates within each block and five treatments (230, 270, 310, 350 and 390 g CP/kg diet). The fish were fed to satiation, three times a day for 90 days. The study evaluated: survival rate, weight gain, final length, feed intake, feed conversion ratio, protein efficiency ratio, specific growth rate and condition factor. There was a linear effect of dietary protein levels for protein efficiency ratio, specific growth rate (positive linear effect) and feed conversion ratio (negative linear effect). For weight gain, final length, feed intake and condition factor a quadratic effect of dietary protein levels was observed, with estimated values of 409.8, 366.2, 317.4 and 365.0 g CP/kg diet, to improve their performance parameters. Analysis of growth based on the length of the fish shows that 366.2 g of CP/kg diet meets the protein requirement of juvenile Trichogaster lalius, blue variety.

Requerimiento proteico del pez juvenil Metinnys orinocencis (Characiformes: Characidae)

“…Los resultados de este estudio son comparables con los obtenidos en diferentes especies ornamentales de gran importancia comercial como Trichogaster lalius quienes presentaron un requerimiento de 36.6 % PB (Zuanon et al, 2013), en Pterophyllum scalare diferentes estudios concuerdan con que el requerimiento de proteína en la dieta es de 32 % PB (Zuanon et al, 2006;Ribero et al, 2007;Franca et al, 2017), en Betta splendens se reportan requerimientos óptimos de 28 % PD con 3 200 kcal/kg DE (Lemos et al, 2014). Es necesario resaltar que la mayoría de estos estudios fueron calculados a través de curvas de dosis vs respuesta, con condiciones experimentales similares y usando dietas semipurificadas.…”

“…El conocimiento de los requerimientos de proteína permite el uso de dietas más equilibradas para cada especie, mejorando los parámetros productivos, reduciendo la eutrofización del agua y el costo de las dietas. Además, contribuye a la reducción del uso de alimento vivo en algunas especies y permite la tecnificación de sistemas intensivos en piscicultura ornamental (Zuanon et al, 2013).…”

Effects of Curcuma longa rhizome on growth, skin pigmentation, and stress tolerance after transport of Trichogaster labiosa

“…Lysine ( Effects of Curcuma longa rhizome on growth, skin pigmentation, and stress tolerance after... Nascimento et al 3 The experimental diets were formulated based on the nutritional requirements of Trichogaster lalius (Zuanon et al, 2013) (Table 1) and chemical composition of turmeric rhizome powder ( Table 2). The turmeric rhizome powder (Açafrão da Terra Pirata ® -Contagem, Minas Gerais, Brazil) was premixed with the other ingredients and then pelletized, dried in a forced-ventilation oven (40 °C for 48 h), ground, and sieved to obtain pellets of 1±0.2 mm diameter.…”

Evaluation of gross protein and lipid requirements in formulated feed for honey gourami, Trichogaster chuna (Hamilton 1822)

“…Previous reports on the gross nutritional requirements of gouramis were limited to the blue gourami, Trichogaster trichopterus (now known as Trichopodus trichopterus ), and the dwarf gourami, Trichogaster lalius (Mohanta & Subramanian, ; Shim, Landesman, & Lam, ; Zuanon et al, ). Shim et al () showed that feed protein levels of 35% increased growth rates, adult body mass, and the percentage of vitellogenic oocytes in T. lalius.…”

“…Mohanta and Subramanian () reported that a feed composition of 35% protein, 8% lipid, and 16.7 MJ/kg digestible energy (DE) was optimal for Trichogaster trichopterus. Zuanon et al () indicated that 37% dietary protein was necessary for Trichogaster lalius. Berenjestanaki, Fereidouni, Ouraji, and Khalili () evaluated the effect of different lipid sources on growth and reproductive performance of the three‐spot gourami, T. trichopterus.…”