Growth curve by Gompertz nonlinear regression model in female and males in tambaqui (Colossoma macropomum)
| Autor: | Concepta McManus, Fernanda Bastos de Mello, Jayme Aparecido Povh, Rogério V. Barreto, Emiko Kawakami de Resende, Darci Carlos Fornari, Ricardo Pereira Ribeiro, Carlos Antonio Lopes de Oliveira, Danilo Pedro Streit |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Male
Tambaqui Gompertz function Biology Curva de crescimento Body weight Models Biological Body growth Animal science Sex Factors crescimento corporal Relative growth rate Animals taxa de crescimento máximo Growth rate lcsh:Science ponto de abate Multidisciplinary Maximum growth rate Growth curve (biology) biology.organism_classification curva de Gompertz Head length Female Gompertz curve lcsh:Q Characiformes Slaughtered point Nonlinear regression Brazil Manejo |
| Zdroj: | Anais da Academia Brasileira de Ciências, Vol 87, Iss 4, Pp 2309-2315 (2015) Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS Anais da Academia Brasileira de Ciências, Volume: 87, Issue: 4, Pages: 2309-2315, Published: 27 NOV 2015 Anais da Academia Brasileira de Ciências v.87 n.4 2015 Anais da Academia Brasileira de Ciências Academia Brasileira de Ciências (ABC) instacron:ABC |
| ISSN: | 1678-2690 |
| Popis: | Was evaluated the pattern of growth among females and males of tambaqui by Gompertz nonlinear regression model. Five traits of economic importance were measured on 145 animals during the three years, totaling 981 morphometric data analyzed. Different curves were adjusted between males and females for body weight, height and head length and only one curve was adjusted to the width and body length. The asymptotic weight (a) and relative growth rate to maturity (k) were different between sexes in animals with ± 5 kg; slaughter weight practiced by a specific niche market, very profitable. However, there was no difference between males and females up to ± 2 kg; slaughter weight established to supply the bigger consumer market. Females showed weight greater than males (± 280 g), which are more suitable for fish farming purposes defined for the niche market to larger animals. In general, males had lower maximum growth rate (8.66 g / day) than females (9.34 g / day), however, reached faster than females, 476 and 486 days growth rate, respectively. The height and length body are the traits that contributed most to the weight at 516 days (P |
| Databáze: | OpenAIRE |
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