Growth and Survival Rate of Red Tilapia (Oreochromis Sp.) Cultivated in the Brackish Water Tank under Biofloc System

Abstract

This study is aimed to evaluate the growth and survival rate of red tilapia (Oreochromis sp.) cultivated in a biofloc system brackish water tanks with the addition of different carbon sources. The experimental treatment was addition of different carbon sources to the media, namely molasses (B), tapioca flour (C), white sugar (D) and without carbon sources or controls (A). Test tilapia used were sized 3.71 ± 0.11 cm with a density of 300 fish / m 3 maintained for 40 days. Fish kept in tanks with a volume of 200 liters filled with sea water as much as 100 l with a salinity of 17 ppt, added with 10 ml / m 3 probiotics and carbon solution with a C / N ratio of 20: 1. The fish were fed with commercial feed (38% protein content), 3 times per day as much as 5% / body weight / day. The addition of probiotics and carbon is done every 8 days. The results of the analysis of variance (ANOVA) showed that the addition of carbon sources had a significant effect on growth, survival rate and feed efficiency. The results showed that the best growth, feed consumption and survival of red tilapia were obtained in treatment B (molasses).

Effect of Supplementation of Dried Bioflocs Produced by Freeze-Drying and Oven-Drying Methods on Water Quality, Growth Performance and Proximate Composition of Red Hybrid Tilapia

“…Despite the dried bioflocs used as supplements in the formulation of the experimental diets resulting in lower quality cultured water for red hybrid tilapia compared to the control in terms of T, DO, pH, EC, TDS, TAN, NO 3 -N, these parameters were still within the range of standard levels for red hybrid tilapia culture [25,40].…”

“…For example, hybrid species of tilapia that descended from salt-tolerant parents are highly salinity tolerant [24]. Red hybrid tilapia can grow better in brackish water tanks under a bioflocs system [25]. Commercially, the fish become one of the export commodities due to the continually increasing acceptance and consumption rate of this type of fish [24,26].…”

“…Not only the growth but also water quality can be affected by those factors [28]. For example, inedible parts of the feed, metabolic waste products, and faces of fish will accumulate in the culture tank, decompose, and decrease water quality parameters resulting in stressing the fish and production decrease [25]. Therefore, water quality parameters are the key factor that can limit the increase in the production of fish farming and need to be managed properly for an optimal standard of water quality for cultured animals [29].…”

Comparative Study of Growth Performance of Three Tilapia Strain in Intensive Culture System

“…The average weight of red tilapia at the end of the rearing period was 199.56 ± 0.05 g with an average daily growth value of 1.43 grams, weight gain of 360 ± 20%, 95% SR, and 0.9 FCR. This growth value is still higher than red tilapia which is cultivated using the biofloc system, which has an average daily growth value of 0.34 and an SR value of 61% [14]. In addition, red tilapia cultivated in brackish waters has a weight gain value of 391 ± 31%, with an FCR value of 1.07.…”

Water Quality Management Guidelines to Reduce Mortality Rate of Red Tilapia (Oreochromis niloticus x Oreochromis mossambicus) Fingerlings Raised in Outdoor Earthen Ponds with a Recirculating Aquaculture System Using Machine Learning Techniques

“…However, the increase in tilapia production in meeting consumer needs will be limited by several factors, including a decrease in water quality due to nitrogen (N) waste originating from uneaten feed residue, feces, and excretory products on the gills. This waste will decompose, causing a decrease in water quality in the rearing system [4][5]. Although tilapia fingerlings reproduce freely in ponds, farmers must consider using properly produced fingerlings.…”