Rice bran is the result of the process of milling rice plants into rice, but rice bran has not been utilized properly in the Sidrap area. Feeding with the addition of fermented rice bran using Lactobacillus sp. is expected to increase the use of feed in tilapia aquaculture. This research aims to realize the fermentation of rice bran on the survival parameters and feed conversion ratio (fcr) of tilapia. This research used a completely randomized design with three replications and four treatments, namely (A) 10% dose of rice bran in feed, (B) 15% dose of rice bran in feed, (C) 20% dose of rice bran in feed, and (D) control. feed. The size of the tilapia used is 1.5 g / fish with a density of 20 individuals / 85 L of freshwater. The number of feeding four times a day and given a test feed of 5% of the bodyweight of the fish. The results showed that the bran flour was fermented using Lactobacillus sp. Significantly different in the survival rate and the ratio of tilapia feed conversion and water quality during the study is suitable for use in tilapia fish maintenance. The highest value resulting from the addition of fermented rice bran 15% (18.33) and 20% (19.33) for survival, while the lowest for control (16.67) and feed conversion ratio showed the best results with the provision of fermented rice bran 20 % (3.03).
This study aims to determine the impact of seaweed cultivation on the water quality of vannamei shrimp aquaculture ponds in the Suppa District, Pinrang Regency. This research was conducted for approximately 10 (ten) years in 2020. The research location was around the waters of the Suppa District, Pinrang Regency. includes preparation / preliminary observation in the field, determining sample points or selecting observation stations, collecting data in the field, taking samples then observing the laboratory, and making reports. Analysis of water quality for seaweed cultivation includes parameters of Salinity, Temperature, DO, pH, Nitrate and Phosphate. Based on laboratory tests, it is known that for analysis of seaweed cultivation water quality, the average value of each parameter is temperature 30 0c, Salinity 36 ppt, DO 6.44 ppm, pH 8.30, Flow 0.35 m / s, Brightness 58%, Nitrate 0.005 mg / l, and 0.00026 ppm Phosphate While the results of laboratory analysis of physical and chemical parameters in the area of vannamei shrimp pond cultivation in Suppa District, Pinrang Regency, it is known that the average value of each parameter is temperature 30 0c, Salinity 33 ppt, DO 6.0 ppm, pH 8.4, Nitrate 0.0061 mg / l, and Phosphate 0.0032 ppm. The analysis of the suitability of pond land based on the analysis carried out found that it was suitable for 727.66 ha. And the effect of seaweed cultivation is very good for its influence on the quality of white shrimp pond water.
This study aims to determine the effect of the dose of fermented rice bran using Lactobacillus sp. on growth performance and enzyme activity in tilapia. This research was conducted in Sidenreng Rappang Regency. The test animal used was tilapia larvae measuring 1.17 g. The maintenance container is a tarp pool with a size of 1 m x 1 m x 1 m filled with fresh water as much as 85 L. The study was designed using a completely randomized design consisting of four treatments and three replications, thus there were 12 experimental units. The treatment was determined based on the dose of fermented rice bran using Lactobacillus sp. which differ, namely 0, 10, 15 and 20%. The test feed was given to tilapia larvae, which were stocked with 20 fish per container for 60 days of rearing. The specific growth rate data of tilapia were analysed using analysis of variance (ANOVA) and enzyme activity was analysed descriptively based on the viability of tilapia. The results showed that tilapia fed with 20% fermented rice bran had a significant effect on the specific growth rate, protease and amylase enzyme activity. The optimal dosage of fermented rice bran using Lactobacillus sp. is 15-20%.
Kandungan Phospat, Amoniak N-Nitrogen sangat memiliki peranan penting bagi kelangsungan hidup budidaya perikanan khusunya Udang Penelitian ini bertujuan untuk membandingankan kandungan phospat dan n-nitrogen (amoniak, nitrat dan nitrit) pada tambak di wilayah pesisir yang tercemar dan tidak tercemar. Penelitian ini dilakukan dengan menggunakan data Primer dan data Sekunder. Penelitian ini dilakukan dengan menetukan stasiun penelitian berdasarkan karakteristik pesisir, yaitu dekat dengan tambak baik tambak yang tercemar maupun yang tidak tercemar. Analisa data menggunakan uji independent sample t-tes, kemudian dilanjutkan dengan menggunkan analisis desktriptif kuantitatif. Kadar amoniak pada tambak yang tercemar kurang dari 2 mg/l kadar nitrit pada tambak yang tercemar 0-27,86 mg/l dan untuk tambak yang tidak tercemar 0,00431, kadar nitrat pada tambak yang tercemar 0-1,7 mg/l dan tambak yang tidak tercemar 0,00875. Kadar phospat pada tambak yang tercemar 0,11-0,35 mg/l sedangkan pada tambak yang tidak tercemar 0,494. Secara umum kadar phospat dan N-nitrogen pada tambaktercemar dan tidak tercemar menunjukan perbedaan yang sangat jauh, tetapi dibandingkan dengan PP no. 82 tahun 2001, kadar amoniak dan nitrit masih berada diatas ambang batas normal.
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