Growth and survival of juvenile cauque river prawn Macrobrachium americanum fed with diets containing different protein levels
| Autor: | Yuniel Méndez-Martínez, Marcel Martínez-Porchas, Edilmar Cortés-Jacinto, José R. Latournerié-Cervera, Juan Carlos Pérez-Rodríguez, Stig Yamasaki-Granados, Marcelo García-Guerrero |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
prawn survival rate Protein efficiency ratio Aquatic Science Biology Oceanography Feed conversion ratio 03 medical and health sciences Animal science medicine Juvenile Growth rate Animal nutrition Macrobrachium americanum Survival rate protein-optimum 04 agricultural and veterinary sciences 030104 developmental biology nutrition juvenile aquaculture 040102 fisheries Prawn 0401 agriculture forestry and fisheries medicine.symptom Weight gain |
| Zdroj: | Latin american journal of aquatic research v.46 n.3 2018 SciELO Chile CONICYT Chile instacron:CONICYT Latin american journal of aquatic research, Volume: 46, Issue: 3, Pages: 534-542, Published: JUL 2018 |
| Popis: | The effect of five diets with different crude protein levels (27, 33, 38, 43, and 48%) on growth and survival of Macrobrachium americanum prawns was determined. Optimum dietary protein level was also calculated. Specimens were collected in the Coyuca River, Guerrero, Mexico, and classified into seven weight groups with 0.67 g intervals amplitude. Five diets with different levels of crude protein were formulated and supplied to individuals of the seven weight groups as an experimental treatment. Weight gain percentage (WG%), specific growth rate (SGR), food intake (FI), protein intake (PI), protein efficiency ratio (PER), food conversion ratio (FCR) and survival rate (SR) were calculated weekly along the 70 days experiment. A quadratic model was fitted to weekly mean weight gain and to WG% rates data to estimate protein requirement for every week of the experiment and weight group. A mortality model was also fitted to mortality data to compare mortality trend among the different experimental diets. 33% protein level resulted in the best treatment because of the parameters calculated, cost to produce and survival trend. Weekly optimum level of protein calculus varied on a range from 39.4 to 43.3% and optimal crude protein percentage for the seven weight ranges was between 49% for smaller prawns (0.248-0.918 g) and 35.7% for the larger prawns (4.271-4.940 g). Thus, it is recommended juvenile feeding prawns with different crude protein levels while the culture time elapses to achieve the maximum weight gain. |
| Databáze: | OpenAIRE |
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