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0.05) were observed for the effect of dietary protein energy ratios on whole body proximate analysis except for body ether extract contents. The body lipid deposition may indicate that, when dietary lipid was supplied in excess, a proportion of this lipid was deposit as fats. Concomitant increase (P<0.05) of body lipid and protein retained were observed with increase dietary lipid levels, while negative effect on energy retained was recorded with increase energy levels. These results suggested that the diet contains 30% crude protein with 18MJ/kg-1 gross energy enhanced the growth performance and feed efficiency of Mugile cephalus, had protein-sparing effect and increased the utilization of each dietary protein and energy sources. ]]>
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Se (9.319± 0.14- 30.522± 0.25) > Zn (1.656±0.09- 5.144±0.03) > Ni (0.01±0.00- 3.161± 0.14) > Au (0.189±0.07- 2.43±0.08 ) > Cu (0.879±0.03 -1.615±0.20) > Pb (0.29 ± 0.04-1.678±0.04) > Cd (0.161±0.04- 0.373±0.03) > Al (0.018±0.01- 0.228±0.07).]]>
p. 103−116
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Ca2+ > Mg2+ > K+, the domination of sodium and calcium ions in the groundwater is due to weathering of rocks. The major anions abundance followed the order HCO3 − > SO4 2− > Cl− > CO3 2-. In general, the ground water of Menoufia Governorate is suitable for drinking and agriculture purposes. The molar ratios of major ions of the groundwater revealed that the chemical composition of the groundwater samples was mainly influenced by carbonate weathering with a small contribution of silicate weathering.]]>
p. 195−205
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0.05) from small- and large-negative shrimp. Similarly, no significant difference (P>0.05) was noticed in the average glycogen concentration of hepatopancreas between small-negative and large-negative shrimps. The average glucose concentration in haemolymph of large-positive shrimp was not significantly different (P>0.05) from small-negative and large-negative shrimps. Two low protein diets (~20BFd20.13 and ~22BFd22.20) and two biofloc (BFdSucrose and BFdGlucose) were prepared in addition to control (35% crude protein). The lowest glucose concentration was estimated in the control (13.45±2.15 µg/ml), and the highest glucose concentration was found in BFdGlucose (75.01±2.31 µg/ml), followed BFdSucrose (45.32±1.32 µg/ml), ~20BFd20.13 (43.51±3.21 µg/ml) and ~22BFd22.20 (40.21±3.12 µg/ml). Pleopod tissues from shrimp P. semisulcatus grown in biofloc, low protein diets, and control were tested by RT-PCR. LSNV was not detected in P.semisulcatus grown in biofloc, low protein diets, compared to control. This study revealed that biofloc treatments and low protein diets could enhance growth rates and control MSGS in P. semisulcatus.]]>
p. 401−422
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0.05). It is recommended to feed Nile tilapia at crude protein level of 30% in order to obtain acceptable growth with economic returns. Nile tilapia reared under the 30% crude protein treatment had better PER ratio (1.96) and lower feed costs (15.11 L.E. /kilogram fish) at lower feeding rate compared to the 25% crude protein treatment.]]>
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0.05) in all different types of fish chips samples until the end of storage period. Concluded from this study that the frozen fish chips produced from common carp, kawakawa and little tuna fish gain high organoleptic acceptance as a cheap product and can help to solve the problems of malnutrition and protein deficiency especially in pre-school children and adolescents. According to sensory evaluation results, fish chips processed from kawakawa was the best type followed by common carp and little tuna fish. ]]>
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p. 527−544
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0.05) in all the parameters analysed (water quality parameters, growth performance, feed utilization, hematology and immune response of male Nile tilapia (O. niloticus) fingerlings compared with the control diet group(G1). Blood parameters were significantly (P < 0.05) lower in the control diet than the other experimental diets, which did not significantly differ from each other (P > 0.05). Fish fed diet G3 (supplemented with 1.0 % citric acid / kg diet) showed the higher serum total protein content, while the control group showed the lower serum haematological parameters compared with the other groups (P ≤ 0.05). The average value of (ALT), and (AST) were significant decreased (P< 0.05) compared with control and other diet the addition of citric acid. The present observations suggest that, the growth, feed utilization, and health status of O. niloticus fingerlings can be enhanced with a supplementation with a dietary citric acid as organic acid supplementation improves growth performance, feed utilization, Proximate composition of body muscle, hematology and immune respons of Nile tilapia, O. niloticus fingerlings.]]>
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