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The Technical Evaluation of Fish Hatcheries at Babylon Province | ||
| Basrah Journal of Agricultural Sciences | ||
| Article 26, Volume 26, 2 (special Issue), 2013, Pages 289-304 PDF (0 K) | ||
| DOI: 10.33762/bagrs.2013.112170 | ||
| Authors | ||
| Khalil I. Saleh; Hamid A. Ubeed; Kadhum U. Mutter | ||
| Abstract | ||
| This study was conducted in random sample of fifteen hatcheries at Babylon province to be studied and evaluate them technically during the period, from mid-January 2009 to mid-May 2010. The results, for the technical aspect showed that: 1-The total water surfaces of the hatcheries varied from 15– 140 dounem, while the surfaces of brood stock ponds are 2.5–11 dounem, which represent only 7% of the total surfaces and the production of fingerlings from 3.5 to 7.7 million per season. 2- There are no proportional between the water surfaces of the ponds (in some of these hatcheries) and the hatching systems (no. of zug jars) which has a negative effects on their production. 3- There is a great frailty in brood stock management at the majority of these hatcheries (selection, quality. numbers, rearing and nutrition) which lead to a reduction of their production. The average weight of Brood stock L dounem was 1077.5 kg with an average food (0.37-0.6 kg./ fish/season). The mother fish used for induced spawning from the total number were only (47%) ,and the eggs produced was (13%) of female weight. 4- The design of the hatcheries buildings is far away of the requirements like; high of the building, water surfaces, filters, and the insides ponds of the brood stock ,which affected the number of the brood stock used for the artificial reproduction and the quantity of eggs, larvae and fingerlings produced. 5- The density of larvae stocking was (1.7 million/ dounem) for common carp and (1.4) for grass and silver carp. The survival rate of the reared larvae was very low due to the bad management of their ponds (21% for common, 13% grass and 14% for silver carp). 6- The number of fingerlings produced for each 10 zug jars was 0.505 million and 0.76 million for each 100 kg of mother fish. 7- The education level of the persons administrated these hatcheries has a clear effects on the different cycles of the production in these hatcheries. | ||
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