Effect of using different types of organic animal manure on plankton abundance, growth performance and survival of Carps fry in fiberglass tanks
| Autor: | Kh. Jani Khalili; A. Keramat; H. Ouraji; A. Esmaili Feridoni; R. Rajabnia |
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| Jazyk: | perština |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Majallah-i ̒Ilmī-i Shīlāt-i Īrān, Vol 28, Iss 2, Pp 49-58 (2019) |
| Druh dokumentu: | article |
| ISSN: | 1026-1354 2322-5998 |
| Popis: | In this research, the effect of organic fertilizers was studied on the growth performance of carps fry. This experiment was conducted in a completely randomized design with seven treatments and three replications in 300 liters of tanks within 3 months. 60 pieces of fish fry with an average weight of 0.6 ± 0.05 g were randomly storage in each tank per 0.5: 1.5: 2: 6 (respectively, 5%, 15%, 20% and 60% respectively big head, grass carp, common carp, silver carp). Seven treatments were included control (C), vermicompost of 1 kg/m3 (T1), vermicompost fertilizer 1.5 kg/m3 (T2), compost fertilizer 1 kg/m3 (T3), compost fertilizer 1.5 kg/m3 (T4), cow manure 1 kg/m3 (T5), chicken manure 0.6 kg/m3 (T6) used in 3 replicates. Primary production, plankton and water quality parameters (temperature, chemical oxygen demand, dissolved oxygen, nitrogen-ammonium and phosphate) were measured weekly or twice weekly. At the end of the experiment period, the growth indices were measured. The results showed that the highest amount of dissolved oxygen, chlorophyll a concentration, phytoplankton and zooplankton was observed in T1 treatment and the lowest in control group (p |
| Databáze: | Directory of Open Access Journals |
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