Nutritive Value of Diets Containing Digeston-1 as a Feed Additive for Nile Tilapia (Oreochromis niloticus) Fingerlings

Abstract

Digeston-1 (fermented soybean meal) is produced by controlled lactic acid fermentation with natural lactic acid bacteria. In the present study, a total of 150 fish with average initial body weight 10.11 g were randomly stocked into 15 aquaria to study the effect of Digeston-1 on performance and growth parameters of Nile tilapia (Oreochromis niloticus) fingerlings. Results revealed that the group fed diet contain Digeston-1 recorded the highest (P<0.05) growth parameters in terms of final body weight gain, average daily gain and specific growth rate compared with those fed the control diet. The Nile tilapia in the trial groups consumed less feed, which led to a considerable reduction of the feed costs. The results also showed that the FCR, PER and PPV% were high significantly (P<0.05) for fish fed diet containing Digeston-1 compared to fed control diet. Body composition; DM, CP, EE, Ash and energy content of Nile tilapia during the experiment showed no changes in whole body composition among all experimental diets. Results of Hematological parameters (WBCs, RBCs, Hb, PCV and Differential leucocytes count) of fish fed diets containing various levels of Digeston-1 indicated that there were no significant (P>0.05) differences among the tested dietary treatments. The treated diets had slightly higher white blood cells count, red blood cells count, hemoglobin and PCV than control diet. On contrast, total protein was increased (P>0.05) by Digeston-1 supplementation specifically, by 0.50% and 0.70% level. Moreover, Digeston-1 supplementation had no significant effect (P>0.05) on Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) concentrations compared with unsupplemented group. It is concluded that the addition of Digeston-1 diets at 0.5% level improve and enhance the growth performance of Nile tilapia, Oreochromis niloticus, fingerlings.

Effect of fermented soybean on growth performance of Nile Tilapia (Oreochromis niloticus)

“…Average of CP was found to be a significantly (P<0.05) different among experimental groups .The highest value of crude protein contents was recorded in T5 (58.40%) while the lowest value of crude protein contents was recorded in T1 (56.49. These results in agreement with the finding of Khalafalla (2013) for Nile tilapia (Oreochromis niloticus ). …”

“…These results are in agreement with Hammed (2012) for fingerlings African catfish, Clarias gariepinus. And, also Khalafalla (2013) when was used Digeston-1 (fermented soybean meal) for Nile tilapia (Oreochromis niloticus) fingerlings at level (0.5% and 0.7%). Table (2) showed that treatment applied had no effect on survival rate throughout the experimental period.…”

“…Modification can also be done by treating the soybean products directly with enzymes .These results are in agreement with the finding of Hammed (2012) for Clarias gariepinus fingerlings. Also, Khalafalla (2013) reported that when used digestion-1 (fermented soybean meal) for Nile tilapia (Oreochromis niloticus) fingerlings at level (0.5% and 0.7%). These results may indicate that fermented soy bean meal could replace up to 100% by soy bean meal in growing tilapia diets without any adverse effect on feed utilization parameters FCR or PER, As presented in Table (3).…”

Improve the Nutrition Value of Local Feed Materials in the Production of Freshwater Fish

“…These results are in agreement with Hammed (2012) for fingerlings African catfish, Clarias gariepinus. Also Khalafalla (2013) and Noaman et al (2015). It was found that fermentation of soybean meal induced removal or inactivation of anti-nutritional factors (Lim et al, 2010), improvement of the nutritional quality (Canella et al, 1984), improvement of digestibility (Kiers et al, 2000) and shelf life of the processed food (Skrede and Nes, 1988).…”

Probiotics, an Alternative Measure to Chemotherapy in Fish Production

“…These biological agents have been utilized for disease control, supplements to improve growth, and in some cases as a means of replacing antimicrobial compounds in aquaculture. Probiotics have proven to inhibit the growth of pathogens through production of antagonistic compounds, competition for attachment sites, nutrients, and alterations of enzymatic activity of pathogens, immune-stimulatory functions, and nutritional benefits such as improvement in digestibility and utilization in feed [10]. Hence, the concept of utilizing probiotics in animal feed, particularly, poultry and fish, is fast gaining acceptance [11].…”