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Predi o do rendimento e do peso do fil谷 da til芍pia-do-Nilo = Prediction of yield and weight of Nile tilapia fillet

Aldrin Vieira Pires; Marcelo Mattos Pedreira; Idalmo Garcia Pereira; Armando da Fonseca Junior
OPEN ACCESS LIBRARY
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摘要

A cria o de til芍pia-do-Nilo (Oreochromis niloticus) e o seu fil谷 apresentam um mercado vigoroso e expans o no Brasil e no mundo. Portanto, um modelo de regress o obtido a partir de parametros corporais externos, de f芍cil observa o, que prediga o rendimento e o peso do fil谷 possibilita selecionar indiv赤duos com maior potencialprodutivo. Objetivou-se com este trabalho obter um modelo que permita predizer o rendimento e o peso do fil谷, baseado em medidas morfom谷tricas e do peso. Foram avalidos 890 indiv赤duos dos quais os caract谷res mensurados foram: comprimento total (CT), comprimento-padr o (CP), comprimento da cabe a (CC) e do tronco (CTR), altura dacabe a (AC1), altura lombar (AL), altura caudal (AC2), espessura lombar (EL) e caudal (EC), peso corporal (PESO), peso de fil谷 (PF) e rendimento de fil谷 (RF). Foram realizadas an芍lises de regress o linear, com PF e RF como vari芍veis dependentes. O R2 para o modelodo PF foi 0,80, demonstrando que as medidas corporais s o confi芍veis para se estimar o peso do fil谷. J芍 para o modelo do RF, o R2 foi de 0,16, n o sendo adequado para se estimar o rendimento do fil谷, devendo ser desenvolvidos novos estudos para se obter um modelo maisconfi芍vel. The rearing of Nile tilapia (Oreochromis niloticus) and its fillet have shown a vigorous market expansion in Brazil and worldwide. Therefore, a regression model obtained from external physical parameters, of easy observation, which can predict the yield and weight of fillet, making it possible to select individuals with higher yield potential. The objective of this work was to obtain amodel that allows a prediction of fillet yield and weight, based on morphometric measurements and weight. Data were collected on 890 individuals and the measured characters were: total length (TL), standard length (CP), length of the head (CC) and the stem (CTR), height of the head (CA1), lumbar height (AL), height flow (CA2), lumbar thickness (EL) and throughput (EC), body weight (PESO), fillet weight (FW) and yield of fillet (RF). A linear regression analysis was performed, with PF and RF as dependent variables. The R2 for the model of the FP was 0.80 每 a satisfactory result 每 suggesting thatthe body measurements are reliable for estimating fillet weight. For the RF model, R2 was 0.16, which is not adequate to estimate fillet yield, requiring further studies in order to obtain a reliable model.

关键词

Oreochromis niloticus rela es morfometricas sele o fenotipica morphometric relationships phenotypic selection

出版信息

论文状态
公开发表
期刊名称
Acta Scientiarum - Animal Sciences
发表日期
2011
卷
-
期
-
页码
-
DOI
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学科领域

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