Effect of different salinity waters on growth performance in some tilapia species
Abstract: In this work, four tilapia groups that belong to three species; Oreochromis niloticus {from Maryuot (MR) & Manzala (MZ)}, O. aureus and Tilapia zillii {from Abbassa (AB)}, are examined under different saline water under controlled laboratory conditions through eight weeks. Specific growth rate, condition factor and weight and length parameters were studied. Two saline water, 10, 17 ppt and control, 0ppt were used. The average initial weight and length for the studied fish were approximately 8.68 ± 0.38g, and 7.84 ± 0.18cm, respectively. The LC50 at 72 hours was determined for all fishes before the rearing experiment. All fish (Oreochromis and Tilapia) had 100% survival up to 16 ppt. In contrast, T. zillii showed 100% survival up to 25 ppt. Through the experimental period, no significant differences were observed between the control group and fish reaered in 10 ppt, and a decrease of the body weight at 17 ppt with significant differences. The specific growth rate (SGR) of O. niloticus (MR) was very close at control and 10 ppt salinity (0.60 vs 0.61 ). In O. niloticus (MZ), the SGR showed the highest value at 10 ppt (0.64 %). This value was significantly different from both control and 17 ppt concentrations. For O. niloticus (MR) and T. zillii, SGR% showed no significant differences among the two saline levels. The specific growth rate (SGR) of O. niloticus (MR and MZ) was very close under 17 ppt. O. aureus, SGR showed significant differences under the three different saline conditions. O. aureus in control showed the highest SGR. The results showed that SGR of T. zillii increased as saline increased up to corresponding level (17ppt) with no significant differences. The condition factor (K) for all groups reared under different saline conditions was higher than one.
Publication year 2002
Pages 131-145
Availability location المعمل المركزى لبحوث الثروة السمكية
Availability number
Organization Name
Country Egypt
serial title مجلة الاكاديمية المصرية لتنمية البيئة
ISSN 1110-8770
Volume 3 . 1
Department Breeding and Genetics
Author(s) from ARC
External authors (outside ARC)
    محمد عبد السلام راشد
    نيرمين عبد الجواد
Agris Categories Animal physiology - Growth and developmentAquaculture productionFisheries production
AGROVOC
TERMS		 Growth. Oreochromis niloticus. Saline water. Tilapia zillii.
Publication Type Journal
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