Effect of Different Feed Restrictions on Growth, Biometric, and Hematological Response of Juvenile Red Tilapia (Oreochromis spp)
| Autor: | Bambang Gunadi, Adam Robisalmi, Kartiawati Alipin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Fish mortality
Refeeding food.ingredient medicine.diagnostic_test Malnutrition Tilapia Fasting Aquatic Science Biology Hematocrit biology.organism_classification Growth Performance Oreochromis Animal science food medicine Juvenile Animal Science and Zoology Compensatory growth (organism) Hemoglobin Ecology Evolution Behavior and Systematics Completely randomized design Food Science |
| Zdroj: | Jurnal Ilmiah Perikanan dan Kelautan; Vol. 13 No. 2 (2021): JURNAL ILMIAH PERIKANAN DAN KELAUTAN; 243-254 |
| ISSN: | 2085-5842 2528-0759 |
| Popis: | Highlight Research There has been a significant decrease in growth, condition factors, hepatosomatic index along viscerosomatic index with the length of time for feed restriction, although fasting for up to 28 days did not cause fish mortality Hematological parameters such as RBCs, WBCs, hematocrit, and hemoglobin decreased significantly, but after re-feeding increased significantly in consecutive times The blood glucose levels decreased during feed restriction and gradually increased after re-feeding Feed restriction fish gained weight continuously during re-feeding, but no displaying compensatory growth The decrease in hematological parameters did not indicate stress levels in fish, but reflected a lack of nutrition condition Abstract The management of red tilapia culture can be improved through restriction of feed. This study aimed to determine the impact of feed restriction time and re-feeding on the growth and hematological performance of juvenile red tilapia. This study used an experimental method with a completely randomized design consisting of five treatments with four replications, namely the fish were given food for 28 days (A), 7 days of feed restriction followed by 21 days of refeeding (B), 14 days of feed restriction followed by 14 days of refeeding (C), 21 days of feed restriction followed by 7 days of refeeding (D) and 28 days of feed restriction (E). The parameters observed were growth, biometry, and hematological values. The results showed that during the feed restriction period there was a significant decrease in growth, condition factors, hepatosomatic index along with viscerosomatic index with the length of time for feed restriction, although fasting for up to 28 days did not cause fish mortality. Hematological parameters such as RBCs, WBCs, hematocrit, and hemoglobin decreased significantly, but after re-feeding, they increased significantly in consecutive times. As for the blood glucose levels decreased during feed restriction and gradually increased after re-feeding. This study stated that feed restriction fish gained weight continuously during re-feeding, but no displaying compensatory growth. The results suggested that the decrease in hematological parameters did not indicate stress levels in fish, but reflected a lack of nutrition condition. |
| Databáze: | OpenAIRE |
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