Utilizing Natural Resources to Enhance Fish Cultivation Efficiency

Oct 13, 2025 by pynkocean.com 49 views

The Effect of Mixing Rajungan Shell Flour (Portunus pelagicus) on Commercial Feed on the Growth and Composition of Tilapia Carcass (Oreochromis niloticus)

Utilizing Natural Resources to Enhance Fish Cultivation Efficiency

The world's population is projected to reach 9.7 billion by 2050, putting immense pressure on the global food system. As a result, the demand for sustainable and efficient fish farming practices has never been more pressing. One potential solution lies in the utilization of natural resources to improve fish cultivation efficiency. This study examines the effect of mixing crab flour (Portunus pelagicus) on commercial feed on the growth and composition of tilapia carcass (Oreochromis niloticus).

Background and Research Methodology

Tilapia is one of the most widely farmed fish species globally, with a significant portion of its production coming from Asia. However, the industry faces numerous challenges, including the need to improve feed efficiency, reduce environmental impact, and enhance product quality. To address these concerns, researchers have been exploring the use of alternative feed ingredients, such as crab flour, to supplement commercial feed.

This study employed an experimental design using a complete random design (RAL) with 3 treatments and each repeated 3 times. The treatments consisted of:

Control: 100% commercial feed
Treatment 1: 96% commercial feed, 2.5% crab flour, and 1.5% fish meal
Treatment 2: 94% commercial feed, 4% crab flour, and 2% fish meal
Treatment 3: 90% commercial feed, 6% crab flour, and 4% fish meal

Experimental Design and Parameters Measured

During the 60-day research period, fish were given feed at a rate of 3%. The parameters measured included:

Weight growth
Length growth
Feed conversion ratio (FCR)
Life rate
Composition of tilapia carcass proximations
Water quality

Results and Discussion

The results showed that the mixing of crab flour in commercial feed had a significant effect (p ≤ 0.01) on weight growth, length growth, and FCR tilapia. Treatment 3 with a composition of 90% commercial feed, 6% crab flour, and 4% fish meal produced the best growth, the most efficient FCR, high life rate, and optimal carcass composition.

Deeper Analysis

The addition of crab flour in feed increases nutritional value and feed digestibility, thus maximizing the growth of tilapia. The rich content of calcium, protein, and chitin in Rajungan shell flour plays an important role in fish growth. Treatment 3 shows the best FCR, meaning that fish are more efficient in converting feed into biomass. This indicates that the mixing of crab flour in the right proportion can increase feed efficiency.

Implications and Suggestions

The results of this study open new opportunities to utilize natural resources such as crab shells in increasing the efficiency of tilapia cultivation. The addition of crab shell flour in commercial feed can be an effective strategy to increase the growth and quality of tilapia. Further research needs to be done to examine the optimal dose of crab flour and its long-term effect on the health and reproduction of tilapia.

Conclusion

In conclusion, this study demonstrates the potential of utilizing natural resources to enhance fish cultivation efficiency. The addition of crab flour in commercial feed can improve the growth and composition of tilapia carcass. Further research is needed to fully explore the benefits of this approach and to develop practical applications for the industry.

Recommendations for Future Research

Optimal dose of crab flour: Determine the optimal dose of crab flour that can be added to commercial feed to achieve the best growth and feed efficiency.
Long-term effect on health and reproduction: Examine the long-term effect of adding crab flour on the health and reproduction of tilapia.
Comparison with other feed ingredients: Compare the effect of adding crab flour with other feed ingredients, such as fish meal or soybean meal, to determine the most effective supplement.

Implications for the Industry

The results of this study have significant implications for the tilapia industry. By utilizing natural resources such as crab shells, farmers can improve feed efficiency, reduce environmental impact, and enhance product quality. This approach can also help to reduce the dependence on traditional feed ingredients, such as fish meal, which are often expensive and unsustainable.

Future Directions

This study provides a foundation for further research on the utilization of natural resources in fish cultivation. Future studies can explore the use of other natural resources, such as seaweed or algae, to develop more sustainable and efficient feed formulations. Additionally, research can focus on the development of new technologies to process and utilize these natural resources, making them more accessible and affordable for the industry.
Frequently Asked Questions (FAQs) on the Effect of Mixing Rajungan Shell Flour (Portunus pelagicus) on Commercial Feed on the Growth and Composition of Tilapia Carcass (Oreochromis niloticus)

Q: What is Rajungan shell flour and how is it used in fish feed?

A: Rajungan shell flour is a by-product of the crab processing industry, obtained from the shells of Portunus pelagicus crabs. It is rich in calcium, protein, and chitin, making it a valuable ingredient in fish feed. The addition of Rajungan shell flour to commercial feed can improve the nutritional value and digestibility of the feed, leading to better growth and feed efficiency in fish.

Q: What are the benefits of using Rajungan shell flour in fish feed?

A: The benefits of using Rajungan shell flour in fish feed include:

Improved growth and feed efficiency
Enhanced nutritional value and digestibility of the feed
Reduced dependence on traditional feed ingredients, such as fish meal
Potential reduction in environmental impact and waste generation
Improved product quality and shelf life

Q: How does the addition of Rajungan shell flour affect the composition of tilapia carcass?

A: The addition of Rajungan shell flour to commercial feed can improve the composition of tilapia carcass by increasing the levels of protein, fat, and other nutrients. This can lead to a more nutritious and palatable product, with improved shelf life and market value.

Q: What are the optimal levels of Rajungan shell flour that can be added to commercial feed?

A: The optimal levels of Rajungan shell flour that can be added to commercial feed will depend on various factors, including the type of fish, the feed formulation, and the desired outcome. In this study, the addition of 6% Rajungan shell flour to commercial feed resulted in the best growth and feed efficiency in tilapia.

Q: Can Rajungan shell flour be used as a substitute for fish meal in fish feed?

A: While Rajungan shell flour can be used as a supplement to commercial feed, it is not a direct substitute for fish meal. Fish meal is a high-protein ingredient that provides essential amino acids for fish growth and development. Rajungan shell flour, on the other hand, is a lower-protein ingredient that provides calcium and other nutrients. A combination of both ingredients may be necessary to achieve optimal growth and feed efficiency in fish.

Q: What are the potential challenges and limitations of using Rajungan shell flour in fish feed?

A: The potential challenges and limitations of using Rajungan shell flour in fish feed include:

Availability and cost of the ingredient
Processing and handling requirements
Potential impact on feed digestibility and nutrient availability
Need for further research and development to optimize the use of Rajungan shell flour in fish feed

Q: What are the future directions for research on the use of Rajungan shell flour in fish feed?

A: Future research directions for the use of Rajungan shell flour in fish feed include:

Optimization of the levels and types of Rajungan shell flour to be used in commercial feed
Investigation of the potential benefits and limitations of using Rajungan shell flour in different types of fish and feed formulations
Development of new technologies and processing methods to improve the availability and affordability of Rajungan shell flour
Evaluation of the environmental impact and sustainability of using Rajungan shell flour in fish feed.