EFFECTS OF DIETARY CARBOHYDRATE TO LIPID RATIOS AT TWO LEVELS OF PROTEIN ON GROWTH PERFORMANCE, BODY COMPOSITION AND HEPATOSOMATIC INDEX OF RAINBOW TROUT (ONCORHYNCHUS MYKISS)

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MESHKAT ROUHANI A.; ABEDIAN KENARI A.A.M.; SHARIATMADARI F.

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Paper Information

Journal: IRANIAN JOURNAL OF NATURAL RESOURCES Year:2007 | Volume:60 | Issue:1 Page(s): 161-175

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Title

EFFECTS OF DIETARY CARBOHYDRATE TO LIPID RATIOS AT TWO LEVELS OF PROTEIN ON GROWTH PERFORMANCE, BODY COMPOSITION AND HEPATOSOMATIC INDEX OF RAINBOW TROUT (ONCORHYNCHUS MYKISS)

Author(s)

MESHKAT ROUHANI A. | ABEDIAN KENARI A.A.M. | SHARIATMADARI F. | Issue Writer Certificate

Keywords

ONCORHYNCHUS MYKISSQ4

NUTRITIONQ3

PROTEINQ4

CARBOHYDRATE/LIPID RATIOQ3

GROWTH PERFORMANCEQ3

BODY COMPOSITIONQ3

HEPATOSOMATIC INDEXQ3

Abstract

Effects of carbohydrate to lipid ratio at two different PROTEIN levels on the activity, growth, chemical composition of the body and the HEPATOSOMATIC INDEX of rainbow trout (ONCORHYNCHUS MYKISS) were investigated in this trial. For this purpose, fishes with the average weight of 60 ± 0/55g were used. The fishes grew in 1,000-L tanks filled up to 500 L of water for a period of 60 days. The experiment was conducted as a 2 × 2 factorial at two PROTEIN levels (40% and 45%) and four carbohydrates to lipid ratios (0.5, 1, 1.5 and 2). The experiments were carried out randomly in triplicate. The food quota was almost fixed and equal to 4,000 kcal/kg. The food to be daily consumed by the fishes was determined as 2% of the biomass in each tank and the fishes were fed twice a day. The weight of the biomass was measured every 14 days though biometry and growth indexes were calculated. Results showed that the increase in the PROTEIN content produces almost no significant difference among the treatments in terms of growth indexes (p³ 0.05), and this increase did not improve growth indexes (weight gain, SGR, and PER). The FCR and price index were also better at the lower PROTEIN content (40%). On the other hand, an increase in the carbohydrate to lipid ratio (increase in carbohydrate and decrease in lipid) showed no significant difference among the treatments in terms of growth indexes (p³ 0.05) but the growth improved at the ration of 0.5 in general. Results of this research shows the most favorable conditions for growth exist at lower PROTEIN content (40%) when the carbohydrate to lipid ratio is 0.5 without any negative effects on the liver.

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APA: Copy

MESHKAT ROUHANI, A., ABEDIAN KENARI, A.A.M., & SHARIATMADARI, F.. (2007). EFFECTS OF DIETARY CARBOHYDRATE TO LIPID RATIOS AT TWO LEVELS OF PROTEIN ON GROWTH PERFORMANCE, BODY COMPOSITION AND HEPATOSOMATIC INDEX OF RAINBOW TROUT (ONCORHYNCHUS MYKISS). IRANIAN JOURNAL OF NATURAL RESOURCES, 60(1), 161-175. SID. https://sid.ir/paper/22966/en

Vancouver: Copy

MESHKAT ROUHANI A., ABEDIAN KENARI A.A.M., SHARIATMADARI F.. EFFECTS OF DIETARY CARBOHYDRATE TO LIPID RATIOS AT TWO LEVELS OF PROTEIN ON GROWTH PERFORMANCE, BODY COMPOSITION AND HEPATOSOMATIC INDEX OF RAINBOW TROUT (ONCORHYNCHUS MYKISS). IRANIAN JOURNAL OF NATURAL RESOURCES[Internet]. 2007;60(1):161-175. Available from: https://sid.ir/paper/22966/en

IEEE: Copy

A. MESHKAT ROUHANI, A.A.M. ABEDIAN KENARI, and F. SHARIATMADARI, “EFFECTS OF DIETARY CARBOHYDRATE TO LIPID RATIOS AT TWO LEVELS OF PROTEIN ON GROWTH PERFORMANCE, BODY COMPOSITION AND HEPATOSOMATIC INDEX OF RAINBOW TROUT (ONCORHYNCHUS MYKISS),” IRANIAN JOURNAL OF NATURAL RESOURCES, vol. 60, no. 1, pp. 161–175, 2007, [Online]. Available: https://sid.ir/paper/22966/en

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