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Effect of Dietary Energy to Protein Ratios on Growth, Nitrogen Budget and Energy Budget of Juvenile Tinfoil Barb Barbodes Schwanenfeldi

Author: LiXiang
Tutor: LinXiaoTao
School: Jinan University
Course: Hydrobiology
Keywords: Energy-protein ratio Rubripes silver crucian carp Grow Nitrogen budget Energy budget
CLC: S963
Type: Master's thesis
Year: 2010
Downloads: 121
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Abstract


Fish meal and casein protein source , preparation of 60.75 kJ · g - 1 ( D1 ) , 51.83 kJ · g - 1 ( D2 ) , 47.36 kJ · g - 1 ( D3 ) , 43.52 kJ · g -1 (D4 ) 39.67 kJ · g - 1 ( D5 ) and 36.39 kJ · g-1 (D6) 6 different energy and protein than can feed, feeding body weight (56.63 ± 4.51) g rubripes silver crucian carp ( Barbodes schwanenfeldi ) juveniles eight weeks of feed energy and protein than growth , nitrogen balance and energy budget of juvenile silver crucian carp rubripes . The results showed that : ( 1 ) feed the growth of the different energy and protein than red fins silver crucian carp juveniles was not obvious , juvenile each diet group terminally increase in weight ( FW ) , weight gain rate (WGR), specific growth rate (SGR ) There was no significant difference ( P gt; 0.05 ) ; feed utilization indicators significantly , which feed group D3, D4 has a low level of feed ingestion rate (RL) and the feed coefficient ( FCE ) , and high levels of protein efficiency (PER). (2) With the decline in the ratio of feed energy and protein the red fins juvenile silver crucian carp fish muscle and liver moisture , crude protein , crude fat and total energy index variation is similar among the groups of which the crude protein content was not significantly difference (P gt; 0.05), moisture , total and crude fat were significantly different ( P lt; 0.05 ) , without significant changes in the law . (3 ) the experimental period rubripes silver crucian carp fingerlings nitrogen budget equation : D1 : 100.00CN = 32.70GN 10.58FN 57.72END2 : 100.00CN = 25.77GN 8.91FN 65.32END3 : 100.00CN = 24.66GN 8.88FN 66.46END4 : 100.00 CN = 25.57GN 9.32FN 65.11END5 : 100.00CN = 22.36GN 9.00FN 68.63END6 : 100.00CN = 20.24GGN 7.9FN 71.84EN overall , with the decrease of the ratio of energy and protein feed , growth and decline in the proportion of nitrogen , and excretion of nitrogen the proportion is rising . ( 4 ) during the experiment rubripes silver crucian carp fingerlings energy budget equation : D1 : 100.00C = , 26.28G 12.06F 3.77U 57.89RD2 : 100.00C = , 25.64G 10.61F 5.02U 62.27RD3 : 100.00C = 27.94G 11.92F 5.47U 58.63RD4: 100.00C: 26.88G 12.18F 5.94U 55.00RD5: 100.00C = 25.32G 13.20F 6.87U 54.60RD6: 100.00C = 27.47G 12.81F 7.84U 51.88R general , lower than with the dietary energy and protein proportion of metabolic energy decreases , while the upward trend in the proportion of excretion can .

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CLC: > Agricultural Sciences > Aquaculture, fisheries > Aquaculture technology > Aquatic animal feed nutrition
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