Performance and economic analysis of the production of Nile tilapia submitted to different feeding management
<p>The productive performance and the variable cost of production were evaluated for different feeding strategies for tilapia during the production cycle. A sample of 2,000 juvenile tilapia was distributed (23.55 ± 2.38 g) into five treatments and with four repetitions as follows: C (feed cons...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Londrina
2015-12-01
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| Series: | Semina: Ciências Agrárias |
| Subjects: | |
| Online Access: | http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/19983 |
| _version_ | 1818019872027705344 |
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| author | Érica Bevitorio Passinato Francisco Oliveira de Magalhães Junior Filipe dos Santos Cipriano Ricardo Henriquede Bastos Souza Kauana Santos de Lima Jorge Chiapetti Luis Gustavo Tavares Braga |
| author_facet | Érica Bevitorio Passinato Francisco Oliveira de Magalhães Junior Filipe dos Santos Cipriano Ricardo Henriquede Bastos Souza Kauana Santos de Lima Jorge Chiapetti Luis Gustavo Tavares Braga |
| author_sort | Érica Bevitorio Passinato |
| collection | DOAJ |
| description | <p>The productive performance and the variable cost of production were evaluated for different feeding strategies for tilapia during the production cycle. A sample of 2,000 juvenile tilapia was distributed (23.55 ± 2.38 g) into five treatments and with four repetitions as follows: C (feed consumption to apparent satiety), R20 (beginning feed restriction when fish reached an average weight of 20 g), R200 (beginning feed restriction when fish reached an average weight of 200 g), R400 (beginning feed restriction when fish reached an average weight of 400 g) and R600 (beginning feed restriction when fish reached an average weight of 600 g). The fish were given extruded commercial feed containing 34% crude protein until they reached a weight of 200 g, at which time they received feed containing 32% crude protein. Monthly biometrics were performed in order to determine the food restriction starting point, which was one day of restriction followed by six feeding days. The following parameters were evaluated: water quality, productive performance variables, the variable costs of production and excreted nitrogen. The results were subjected to analysis of variance, and the means were compared using Tukey’s test (5% significance). No statistical differences were observed in final weight, weight gain, feed consumption, feed conversion or survival. The fish from the R20 treatment had the lowest variable cost of production (g fish-1) and the lowest nitrogen excretion into the water. This suggests that feed restriction from the early stages of life does not compromise the productive performance and contributes to reducing the variable costs and the quantity of nitrogen excreted into the environment. Thus, a one-day per week feed restriction strategy can be applied from the earliest stages of life without compromising the productive performance or body composition of Nile tilapia. This strategy can also reduce variable costs of production by means of reducing relative labour and feed costs. </p> |
| first_indexed | 2024-04-14T07:57:32Z |
| format | Article |
| id | doaj.art-65f533dfc6ae497da21db136919d78a4 |
| institution | Directory Open Access Journal |
| issn | 1676-546X 1679-0359 |
| language | English |
| last_indexed | 2024-04-14T07:57:32Z |
| publishDate | 2015-12-01 |
| publisher | Universidade Estadual de Londrina |
| record_format | Article |
| series | Semina: Ciências Agrárias |
| spelling | doaj.art-65f533dfc6ae497da21db136919d78a42022-12-22T02:04:59ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592015-12-01366Supl24481449210.5433/1679-0359.2015v36n6Sup2p448112767Performance and economic analysis of the production of Nile tilapia submitted to different feeding managementÉrica Bevitorio Passinato0Francisco Oliveira de Magalhães Junior1Filipe dos Santos Cipriano2Ricardo Henriquede Bastos Souza3Kauana Santos de Lima4Jorge Chiapetti5Luis Gustavo Tavares Braga6Universidade Estadual de Santa CruzUniversidade Estadual de Santa CruzUniversidade Federal de Minas GeraisUniversidade Federal de RondôniaUniversidade Federal da BahiaUniversidade Estadual de Santa CruzUniversidade Estadual de Santa Cruz<p>The productive performance and the variable cost of production were evaluated for different feeding strategies for tilapia during the production cycle. A sample of 2,000 juvenile tilapia was distributed (23.55 ± 2.38 g) into five treatments and with four repetitions as follows: C (feed consumption to apparent satiety), R20 (beginning feed restriction when fish reached an average weight of 20 g), R200 (beginning feed restriction when fish reached an average weight of 200 g), R400 (beginning feed restriction when fish reached an average weight of 400 g) and R600 (beginning feed restriction when fish reached an average weight of 600 g). The fish were given extruded commercial feed containing 34% crude protein until they reached a weight of 200 g, at which time they received feed containing 32% crude protein. Monthly biometrics were performed in order to determine the food restriction starting point, which was one day of restriction followed by six feeding days. The following parameters were evaluated: water quality, productive performance variables, the variable costs of production and excreted nitrogen. The results were subjected to analysis of variance, and the means were compared using Tukey’s test (5% significance). No statistical differences were observed in final weight, weight gain, feed consumption, feed conversion or survival. The fish from the R20 treatment had the lowest variable cost of production (g fish-1) and the lowest nitrogen excretion into the water. This suggests that feed restriction from the early stages of life does not compromise the productive performance and contributes to reducing the variable costs and the quantity of nitrogen excreted into the environment. Thus, a one-day per week feed restriction strategy can be applied from the earliest stages of life without compromising the productive performance or body composition of Nile tilapia. This strategy can also reduce variable costs of production by means of reducing relative labour and feed costs. </p>http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/19983Crescimento compensatórioOreochromis niloticusRestrição alimentarViabilidade econômica. |
| spellingShingle | Érica Bevitorio Passinato Francisco Oliveira de Magalhães Junior Filipe dos Santos Cipriano Ricardo Henriquede Bastos Souza Kauana Santos de Lima Jorge Chiapetti Luis Gustavo Tavares Braga Performance and economic analysis of the production of Nile tilapia submitted to different feeding management Semina: Ciências Agrárias Crescimento compensatório Oreochromis niloticus Restrição alimentar Viabilidade econômica. |
| title | Performance and economic analysis of the production of Nile tilapia submitted to different feeding management |
| title_full | Performance and economic analysis of the production of Nile tilapia submitted to different feeding management |
| title_fullStr | Performance and economic analysis of the production of Nile tilapia submitted to different feeding management |
| title_full_unstemmed | Performance and economic analysis of the production of Nile tilapia submitted to different feeding management |
| title_short | Performance and economic analysis of the production of Nile tilapia submitted to different feeding management |
| title_sort | performance and economic analysis of the production of nile tilapia submitted to different feeding management |
| topic | Crescimento compensatório Oreochromis niloticus Restrição alimentar Viabilidade econômica. |
| url | http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/19983 |
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