scholarly journals Effect of feeding frequency on performance, nutrient digestibility, energy and nitrogen balances in juvenile African catfish (Clarias gariepinus) fed diets with two levels of crystalline methionine

2021 ◽  
Vol 281 ◽  
pp. 115098
Author(s):  
Folasade E. Elesho ◽  
Saskia Kröckel ◽  
Elisa Ciavoni ◽  
David A.H. Sutter ◽  
Johan A.J. Verreth ◽  
...  
1987 ◽  
Vol 35 (4) ◽  
pp. 521-524
Author(s):  
J.H. Boon ◽  
J.M. Smits ◽  
T. Wensing ◽  
E. Lo

The effect of feeding level and water supply on the total content of plasma protein (TPP) and fractions of these proteins (PPF) of young African catfish was studied. It was found that TPP can be divided into 4 fractions (PPF I-IV), of which PPF I is predominant. Analysis of the results showed a strong effect of feeding level on TPP and PPF I-IV. There was a positive correlation between TPP and the weights of PPF I-IV, and a negative correlation between PPF I and PPF II. The PPF I fraction might be usable as an indicator for the health status of young catfishes. (Abstract retrieved from CAB Abstracts by CABI’s permission)


2014 ◽  
Vol 9 (5) ◽  
pp. 425-429 ◽  
Author(s):  
F.P. Asuwaju ◽  
V.O. Onyeche ◽  
K.E. Ogbuebunu ◽  
H.F. Moradun ◽  
E.A. Robert

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Hamed H.E. Saleh

 No or little information on the use fresh (wet) housefly maggots (Musca domestica) in African catfish (Clarias gariepinus) fry feeding. Therefore, this study was conducted to investigate the effect of feeding on fresh (wet) housefly maggots with or without artificial diet on water quality, growth performance, survival percentage and feed utilization of African catfish fry under laboratory conditions. Housefly maggots produced from a mixture of poultry droppings and foods wastes, it was used to replace artificial feed at 0, 50 and 100% levels. Catfish were fed artificial diet alone (Feed 1), fresh (wet) housefly maggots alone (Feed 2), and 50% fresh housefly maggots with 50% artificial diet (Feed 3) were prepared and tested on triplicate groups of African catfish fry (initial weight of 0.25±0.02 g) for 60 days. Results showed that final weight (g/fish) was significantly highest (P£0.05) in fish fed feed 3 (6.03±0.08), followed by fish fed feed 2 (4.62±0.27), followed by fish fed feed 1 (3.15±0.68). Specific growth rate (%/day) was also significantly highest in fish fed feed 3 (5.31±0.10), followed by fish fed feed 2 (4.86±0.03), followed by fish fed feed 1 (4.18±0.24). The same trend was observed with total weight gain, percentage weight gain, daily growth rate and relative growth rate. Feed intake and protein intake were significantly highest (P£0.05) in fish fed feed 3 and fish fed feed 2, followed by fish fed feed 1. While, feed conversion ratio (FCR) and protein efficiency ratio were not significantly (P>0.05), but the improvement in FCR recorded in catfish fry fed feed 3 and feed 2 under the experimental conditions. Survival percentage was within the range 55–75%, with insignificant differences (P>0.05) among treatments. The water quality parameters such as temperature, pH, dissolved oxygen, total ammonia, nitrite and nitrate were not significantly (P>0.05) among the treatments and were tolerable for fish culture. Accordingly, use of the 50% fresh (wet) housefly maggots with 50% artificial diet in African catfish fry feeding had positive effect on growth performance and reduce of the feed cost.


2020 ◽  
Vol 22 (1) ◽  
Author(s):  
Achmad Noerkhaerin Putra ◽  
Mustahal Mustahal ◽  
Mas Bayu Syamsunarno ◽  
Dodi Hermawan ◽  
Devia Gusnur Fatimah ◽  
...  

Abstract. Putra AN, Mustahal, Syamsunarno MB, Hermawan D, Fatimah DG, Putri PB, Sevia, Isnaini R, Herjayanto M. 2021. Dietary Bacillus NP5 supplement impacts on growth, nutrient digestibility, immune response, and resistance to Aeromonas hydrophila infection of African Catfish, Clarias gariepinus. Biodiversitas 22: 253-261. This study aims to investigate the effects of Bacillus NP5 supplementation as a probiotic on growth, immune response, and resistance of African catfish to Aeromonas hydrophila infection. Catfish with an initial weight of 6.8 ± 0.1 g were fed with different doses of Bacillus NP5 (0%, 1.1%, 1.2% B, 1.3%, and 1.4%) with three replications and reared for 60 days. The first 45 days were used to observed growth performance, and the last 15 days were used to perform challenge tests against A. hydrophila infection. The results showed that the treatment of 1.2% Bacillus NP5 results in the highest specific growth rate (2.55±0.28 day-1) and increased protein and lipid digestibility significantly (P<0.05). Treatment of 1.1-1.3% Bacillus NP5 increase amylase and lipase activity that significantly higher than 0% Bacillus NP5 treatment. Supplementation of Bacillus NP5 significantly increased the leukocyte, phagocytic index, and survival rate in African catfish after A. hydrophila infection. Therefore, the supplementation of 1.2% Bacillus NP5 in the feed increased the growth, immune response, and African catfish resistance to the infection.


2020 ◽  
Vol 3 (3) ◽  
pp. 25-28
Author(s):  
A. E. Falaye ◽  
S. O. Sule

Digestibility trial of Cattle hoof waste subjected to five processing methods was conducted on Clarias gariepinus juveniles. A reference diet 70 % and test diet 30 % was formulated with chromic oxide biomarker. Feed and feacal samples collected at 8h interval after feeding were analysed for proximate parameters and digestibility coefficient calculated. There was significant difference (P < 0.05) among treatments crude protein digestibility was highest in Reference diet (88.26 ± 0.04) < soda ash diet (87.49 ± 0.04) < fermented diet (82.15 ± 0.10) < wood ash diet (81.26 ± 0.03) < raw hoof diet (79.57 ± 0.05) and lowest in Autoclaved diet (77.69 ± 0.02). Nutrient digestibility also showed significant difference (P < 0.05) among treatments with highest values for soda ash diets parameters and least protein nutrient in autoclaved diet (58.99±0.08 ); fat, dry matter and energy nutrient in raw hoof diet (56.41 ± 3.49; 23.39 ± 0.16; 25.71 ± 0.75). This study concludes that Clarias gariepinus juveniles can be fed soda ash treated cattle hoof waste.


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