scholarly journals A Comparison between Chicken Viscera and Housefly Maggot Cultured from this By-products for Nile Tilapia Diets: Growth Performance, Feed Utilization and Whole Body Composition

2020 ◽  
pp. 1-12
Author(s):  
Cayen S. Alofa ◽  
Youssouf Abou
Keyword(s):  
Body Composition ◽  
Growth Performance ◽  
Nile Tilapia ◽  
Feed Utilization ◽  
Utilization Efficiency ◽  
Daily Weight Gain ◽  
Whole Body ◽  
Body Protein ◽  
Fishmeal Replacement ◽  
Chicken Viscera

Aims: The feeding trials were conducted to compare the effects of partial fishmeal replacement by two different animal protein sources on growth performance, feed utilization efficiency and body composition of juvenile Nile tilapia. Place and Duration of Study: The study was carried out at the Aquaculture Research Center, Department of Zoology, Faculty of Sciences and Technics, University of Abomey-Calavi for a period of 84 days. Methodology: Three isonitrogenous and isoenergetic diets were formulated containing fishmeal (CD), chicken viscera meal (CVM) and housefly maggot meal (HMM), as partial fishmeal replacement. Commercial diet Skretting (SK) was used as reference diet. All male Oreochromis niloticus with an average initial body weight of 8.65 g were fed thrice a day to apparent satiation. Each treatment was randomly attributed to three replicates. Results: Fish fed all experimental diets showed no effects (P>.05) on survival rate (91.33-96.00 %), condition factor (1.85-1.9), protein efficient ratio (2.05-2.37) and feed conversion ratio (1.21-1.40), although higher values were observed with control diets. Final mean weight and daily weight gain of fish fed HMM diet (88.31 g ; 0.95 g. days-1) were not significantly different from those fed control diets C (88.54 g; 0.95 g/j) and Sk (87.59 g; 0.94 g/j) respectively. Growth performances significantly decreased (P<.05) in CVM group (75.09 g; 0.75 ± g/j). Whole-body protein contents were similar in all groups, whereas lipid content was highest in those fed CVM. Conclusion: The results indicated that 200 g fishmeal per kilo diet can be successfully replaced with 250 g.Kg-1 of HMM without adverse effect on growth and feed utilization whereas CVM inclusion did not perform also well. 

Growth performance of Heterobranchus longifilis, (Valenciennes, 1840) Fingerlings Fed with Nymphaea lotus (Linné, 1753)

2019 ◽  
Vol 7 (3) ◽  
pp. 1
Author(s):  
Otchoumou Kraidy Athanase ◽  
Blé Mélécony Célestin ◽  
Saki Suomion Justin ◽  
Alla Yao Laurent
Keyword(s):  
Survival Rate ◽  
Growth Performance ◽  
Control Diet ◽  
Feed Utilization ◽  
The Body ◽  
Daily Weight Gain ◽  
Whole Body ◽  
African Catfish ◽  
Final Body Weight ◽  
Heterobranchus Longifilis

A 56-day feeding trial was performed to examine the effects of using Nymphaea lotus leaf meal (NLM) on growth performance, feed utilization, body composition, and survival rate of African catfish (Heterobranchus longifilis). Five treatment groups in triplicates with an average of the initial weight of 0.26±0.07g were fed diets incorporated with graded levels of NLM (0, 10, 20, 30 and 40%). The obtained results showed that higher final body weight (FBW), daily weight gain (DWG), and specific growth rate (SGR) were observed with fish fed the control diet (CD) and NLM at the level of 20% compared to those of fish fed other diets. Protein efficiency ratios (PER) were not altered with dietary treatment. In addition, feed conversion ratio (FCR) of fish groups fed up to 30% of NLM were not varied (p>0.05), meanwhile, daily feed intake of fish fed NLM diets exhibited lower values compared to those of fish fed CD. Final whole body proximate compositions of catfish showed no significant differences (P>0.05) except for the body total fat and ash contents. Fat contents of fish fed diets incorporated with NLM were significantly lower than those of fish fed the control diet (CD) (P<0.05). Meanwhile, ash contents of fish fed diets incorporated with high levels of NLM (30, 40%) were significantly lower than those of fish fed the control diet (CD) (P<0.05). Survival rates ranged between 72 - 80% and there were no differences among all groups (P > 0.05). Therefore, the results of the present study suggest that up to 20% of NLM protein can be incorporated in the diet of African catfish with no adverse effects on growth performance, feed utilization, and survival rate.

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