Utilization ofCaridina nilotica(Roux) meal as a protein ingredient in feeds for Nile tilapia (Oreochromis niloticus)

Abstract

The effects of replacing fish meal with Caridina nilotica as a protein ingredient on growth performance, nutrient utilization, carcass, proximate composition and economic benefits in Nile tilapia (Oreochromis niloticus) culture was evaluated. Replacement of the FM with C. nilotica was done at 25%, 50%, 75% and 100% (D25, D50, D75 and D100) and the substitution effects was compared with the control diet (D0, 0% C. nilotica). After 140 days of culture, the best growth performance, nutrient utilization and economic benefits occurred in fish groups fed diets with 25% C. nilotica inclusion. However, growth performance in fish fed diets D50 and D75 were comparable with the control (P > 0.05). At 100% substitution level of FM with C. nilotica, the growth performance and fish survival was lower than control. Protein and lipid contents in the fish and their digestibilities were highest in diet D25 and decreased with increasing levels of substitution of FM with C. nilotica. This study demonstrate that utilization of local protein sources (C. nilotica) can be effectively used to replace up to 75% of FM in the diets without compromising growth performance, survival, nutrient utilization and economic benefits in O. niloticus culture.

Practical feeds for juvenile Nile tilapia (Oreochromis niloticus) prepared by replacingRastrineobola argenteafishmeal with freshwater shrimp (Caridina nilotica) and mung bean (Vigna radiata) meals

“…The results of the present study concur with those of Mugo‐Bundi et al. () in that C. nilotica can substitute R. argentea fishmeal in diets for Nile tilapia. However, comparison of the two studies is complicated because of the differences in composition of the diets used, fish sizes tested and culture conditions (tanks versus ponds).…”

“…Thus, both the results of the present study and that of Mugo‐Bundi et al. () suggest that C. nilotica can partially substitute fishmeal in diets for Nile tilapia.…”

“…The CP of the diets in the present study (290–310 g kg −1 of feed) was slightly higher than that of Mugo‐Bundi et al. () of 280 g kg −1 of feed; however, their feed contained less of the plant‐based protein sources than were used in the present study. Mugo‐Bundi et al.…”

“…Mugo‐Bundi et al. () did not observe any negative effects on the growth of Nile tilapia fed diets containing up to 290 g kg −1 of C. nilotica , although a modest inclusion (100 g kg −1 ) of C. nilotica resulted in the best growth. These findings are consistent with the results of the present study where C. nilotica was included up to 270 g kg −1 (Diet C) without any significant effect on growth, except when C. nilotica and V. radiata were added in combination.…”

COMPARATIVE GROWTH PERFORMANCE OF MALE MONOSEX AND MIXED SEX NILE TILAPIA (Oreochromis niloticus L.) REARED IN EARTHEN PONDS

“…In addition, the higher growth rate of male monosex tilapia may have been due to the influence of 17--methyltestosterone hormone used for sex-reversal, which has been shown to be a growth promoter in Oreochromis mossambicus (Kuwaye et al, 1993). Findings by Shepherd et al (1997) (Mugo-Bundi, 2013). The FCR of 1.51 ± 0.01 obtained for male monosex fish means that these fish used less feed to gain more weight when compared with the mixed sex fish which had FCR of 1.98 ± 0.03.…”