UTILIZATION OF DISTILLERS DRIED GRAINS WITH SOLUBLES IN FISH NUTRITION 2-PARTIAL REPLACEMENT OF FISH MEAL AND YELLOW CORN BY GRADED LEVELS OF DDGS IN NILE TILAPIA FINGERLINGS DIETS ( Oreochromis niloticus).

Abstract

This study was conducted to evaluate the effect of feeding different levels of DDGS in the diets of tilapia fingerlings on growth performance, feed utilization, chemical composition of the whole fish body, blood hematological and economic efficiency. Therefore, six graded levels of DDGS (0, 4, 8, 12, 16 and 20%) were used insteated of fish meal and yellow corn protein in sex tested diets approximately isonitrogenous and isocaloric. Fish were stocked in a rearing plastic tank for two weeks adaptation period, then it were stocked at the rate of 5 fish/glass aquarium with initial weight of 6.0 ± 0.14 g/fish. During the experimental period (72 days) the fish were fed the tested diets at the rate of 6% of the total biomass for six days per week. The obtained results showed that : There were significant (P ≥ 0.05) effect of DDGS levels on all traits of growth performance and feed utilization parameters of Nile tilapia fed different levels of DDGS. All growth performance parameters were increased significantly (P ≤ 0.05) with increasing the replacement levels of DDGS until 16% of DDGS, then, decreased significantly with increasing the replacement level of DDGS. The highest values of growth performance parameters were found in replacement levels 16 % of DDGS. The best values of economic efficiency recorded with the level 12% and 16% of DDGS, respectively. It may be concluded that replacing fish meal and yellow corn by DDGS until 16% in the diets of tilapia had no any adverse effect on most of growth parameters, feed utilization, chemical composition of fish body, hematological blood parameters and economic efficiency of tilapia fingerlings.

Possible Benefits of Using Two Dietary Crude Protein Levels And Two Fat levels From Three Sources in Feeding Tilapia

“…The negative relationship between CP and EE percentages of fish carcass composition found in the present study was registered too by Abdelhamid and Soliman (2013), Gabr et al (2013), and Abdelhamid et al (2015a). Abdelhamid et al (2014a&b) presented hematological and immunological effects due to different levels and sources of dietary feed additives for African catfish (Clarias gariepinus) and Nile tilapia (Oreochromis niloticus), respectively.…”

Effects of replacement of dietary cottonseed meal by distiller’s dried grains with solubles on growth performance, muscle texture, health and expression of muscle‐related genes in grass carp ( Ctenopharyngodon idellus )

“…The positive effect of DDGS on growth performance is consistent with the previous studies, in which dietary corn‐based DDGS can be integrated at the level of 22.5% for channel catfish (Li et al, 2010; Robinson & Li, 2008) and 15% for rainbow trout (Cheng & Hardy, 2004). Also, up to 16% of corn‐based DDGS replacing fishmeal showed positive effects on tilapia growth performance (Gabr et al, 2013). Both body condition factor and hepatosomatic index showed the highest value in the control group compared with DDGS20 group that agrees with that organs enlargement such as liver, kidney and heart have been related to dietary factors especially if diets contain toxins or anti‐nutrients (Adejinmi, 2000).…”

Evaluation of Distillers Dried Grains With Solubles in Aquafeeds – A Review

“…The nutri-ent digestibility of DDGS is dependent on the digestive ability of the non-protein energy fraction. Studies have shown the ADC rates of DDGS are high in various fish species (Sándor et al, 2021 b) as Nile tilapia (Gabr et al, 2013) and milkfish (Mamauag et al, 2017). There have been few studies on the digestibility of DDGS as an ingredient in fish feed.…”