scholarly journals EFFECT OF ADDING VITAMINE-E AND FLAX OIL Linum usitatissimum TO THE DIETS OF TWO TYPES OF CARP FISH Cyprinus carpio L. , Hypophthalmichthys molitrix RAISED IN FLOATING CAGES OF UPHRATE RIVER – CITY OF SAMAWAH

2016 ◽  
Vol 47 (1) ◽  
Author(s):  
AL-KHAFA & AL-AMARY

The study was conducted for a period 120 days of metal floating cages were used 2.25 × 2.25 × 1.5 m dimensions, for breeding two types of carp fish and common carp Cyprinus carpio.L and silver carp Hypophthalmichthys molitrix rate of 240 fish (120 common carp +120 Silver carp) for each treatment in three replications, and made laboratory four diets with obrocana content of between 27.83% and 28.52% and energy between 439.39 and 445.68 Kilusarh/100 g as it was the bush first free any addition treatment called the second control and treatment contained vitamin E (500 mg/kg) and third-treatment contained linseed oil by 1% and the treatment represented a fourth of all oil and vitamin mentioned the same proportions. The results of the statistical analysis significant preference (P ≤0.05) for the fourth treatment  that contained the flax oil, vitamin E in weight gain overall, reaching for each of the common and silver carp, common carp, silver carp 109.31 and 60.30 and 49.01 g / fish in a row , and in the daily increase since 0.910 and 0.502 0.408 g / fish / recorded consecutive day, and in the relative growth coefficient as 398.541% and 583.172% and 286.834%, respectively reached, and in qualitative growth 0.01330% and 0.01600% and 0.01127%, respectively, and the rate of 3.597 and 3.008 and 4.322 feed conversion, respectively.

2021 ◽  
Vol 6 (1) ◽  
pp. 26-34
Author(s):  
Md. Anwar Hossain ◽  
Md. Akhtar Hossain ◽  
Md. Ayenuddin Haque ◽  
Md. Harun-Ur-Rashid ◽  
Md. Moksedur Rahman

Good aquaculture practice (GAP) based carp fattening is a potential technique to obtain higher and safe fish production within shorter period in ponds of drought prone area. Sustainability of this technique, however, is constrained by high feed cost and poor water quality. Therefore, as an overcoming effort, three diets (protein content of 20%, 25% and 30%) under three different treatments (T1, T2 and T3) were tested during January-June, 2020 in fattening ponds of carps (Catla, Gibelion catla; silver carp, Hypophthalmichthys molitrix; rohu, Labeo rohita; mrigal, Cirrhinus cirrhosis; and carpio, Cyprinus carpio var. specularis) under Rajshahi district, Bangladesh. Variation in protein level had no significant effect on environmental parameters of pond water. Combined fish yield was found to vary significantly (P<0.05) among the treatments, while feed conversion ratio did not vary significantly. Although second degree polynomial regression analysis identified 28.50% dietary protein for optimal growth of carps but no significant difference between T2 and T3 was found for the total fish yield. However, significantly (P<0.05) highest cost-benefit ratio obtained with the diet containing 25% protein suggested this protein level in diet was profitable for carp fattening in pond.


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