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São José do Rio Preto, Brazil

Tachibana L.,SAA Agencia Paulista de Tecnologia do Agronegocios APTA | Goncalves G.S.,SAA APTA Institute Pesca | Guimaraes I.G.,Federal University of Goais | Pezzato L.E.,Sao Paulo State University
Boletim do Instituto de Pesca | Year: 2010

This work aimed to determine the dry matter (DM), crude protein (CP), gross energy (GE) and essential aminoacid (EAA) digestibility coefficient of triticale by Nile tilapia. Fish with 112.00 ± 22.00g average weight were used to digestibility test. Reference diet was formulated with purified ingredients and triticale replaced 30% of this diet. Chromic oxide was used as an external inert marker to determine the digestibility coefficients. The apparent digestibility coefficients (ADC) of triticale were (%): 70.98; 87.33 ± 1.64; 72.87 ± 0.35; DM, CP and GE, respectively; alanine 80.45; arginine 94.88; aspartic acid 84.59; glycine 83.82; isoleucine 84.08; leucine 89.43; lysine 83.70; cysteine 99.87; methionine 76.38; phenylalanine 91.04; tyrosine 78.61; threonine 76.83; tryptophan 87.10; proline 97.64; valine 88.05; histidine 93.52; serine 87.76. Results demonstrated good quality of triticale nutrients to Nile tilapia feeds.

Tachibana L.,SAA Agencia Paulista de Tecnologia do Agronegocios APTA | Goncalves G.S.,SAA APTA Institute Pesca | Guimaraes I.G.,Sao Paulo State University | Falcon D.R.,Federal Rural University of Pernambuco | And 2 more authors.
Revista Brasileira de Zootecnia | Year: 2010

Corn replacement with triticale in Nile tilapia diets was assessed. The fish were submitted to a performance test in a system of aquariums (50 L) with controlled temperature and water recirculation. Fingerlings weighing from 1.7 ± 0.08 g were stocked in 30 aquaria in a randomized complete block with five replacement levels (0.0, 25.0, 50.0, 70.0 and 100.0%) of corn with triticale and six replications. The performance parameters analyzed were: survival, weight gain, apparent feed conversion, feed intake, cost, hepato-somatic index, viscero-somatic index; blood parameters: number of erythrocytes, hemoglobin concentration, hematocrits percentage, mean corpuscular volume, mean corpuscular hemoglobin concentration. The data were submitted to variance analysis and compared by Duncan's test. At 60 days of assessment there was greater survival of fish that received diet with 25.0% substitution compared to those fed diet without triticale. At 100 days of assessment the fish fed diet with triticale at the level of 50.0% presented the worst feed conversion rate and highest feed intake. Triticale inclusion influenced the blood parameters, increasing the number of red blood cells and reducing the mean corpuscular volume. Triticale can replace up to 100% corn in Nile tilapia fingerling diets without affecting the fish performance, feed cost and carcass quality. © 2010 Sociedade Brasileira de Zootecnia.

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