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Exigência de metionina + cistina para alevinos de Tilápia do Nilo (Oreochromis niloticus)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Furuya, Wilson Massamitu Silva, Lilian Carolina Rosa Neves, Patrícia Ribeiro Botaro, Daniele Hayashi, Carmino Sakaguti, Eduardo Shiguero Furuya, Valéria Rossetto Barriviera |
| Copyright Year | 2004 |
| Abstract | This study was carried out to determine the methionine + cystine requirement for Nile tilapia, fingerlings (2.61 ± 0.14g). A randomized block designs, with six treatments, three replicates and five fish by experimental unit was used. Basal diet was utilized with 28% crude protein and 3173DE kcal kg-1 of digestible energy, supplemented with DL-methionine, resulting in diets with 0.87; 0.95; 1.03; 1.11; 1.19 and 1.27% of methionine + cystine. Diets were fed to satiation during 41 days. No effects (P>0.05) of methionine + cystine levels on survival rate and hepatosomatic index were observed. A quadratic effect (P<0.05) for weight gain was observed, which increased up to 1.22% methionine + cystine in the diet. Feed conversion ratio and protein efficiency ratio increased (P<0.05) up to 1.00% of methionine + cystine. A quadratic effect (P<0.05) of methionine + cystine level on carcass yield was observed, which increased up to 1.13% of methionine + cystine. The concentration of 1.00% methionine + cystine corresponding to 3.54% crude protein, in the presence of 0.54% methionine in the diet, showed the best njperformance. |
| Starting Page | 1933 |
| Ending Page | 1937 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| DOI | 10.1590/S0103-84782004000600041 |
| Volume Number | 34 |
| Alternate Webpage(s) | http://www.scielo.br/pdf/cr/v34n6/a41v34n6.pdf |
| Alternate Webpage(s) | https://doi.org/10.1590/S0103-84782004000600041 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
