Assignment on brood stock and hatchery management REPORT.pdf
- 1. 1 | P a g e Index SL No Content Page No 1 Introduction 2 2 Objectives 2 3 Discussion 2-3 4 Renu Procedure 3-4 6 Price List 5 7 Overview 5 8 Conclusion 6 9 Acknowledgment 6
- 2. 2 | P a g e Introduction Broodstock, or broodfish are a group of mature individuals used in aquaculture for breeding purposes. A hatchery is a place where eggs are hatched under artificial conditions. As part of our course “Broodstock and Hatchery Management” on 14 February,2024, an insightful study tour commenced at 9:30 AM, led by our respected teachers, Dr. Mahmudul Hasan, Md. Mokhlasur Rahman, and our beloved chairman Mohammad Rafiqul Bari sir from the Department of Fisheries. The purpose of the tour was to visit Zohurul Fish Farm, a prominent fish farm located in the Jamalpur district. This excursion was organized by the Dept. of Fisheries of Bangamata Sheikh Fojilatunnesa Mujib Science and Technology University in Jamalpur, further enhancing our academic knowledge and practical understanding. During this study tour, our focus was on the intriguing subject of "Broodstock and Hatchery Management". This hands-on experience enriched our theoretical knowledge, providing us with valuable real-world perspectives. Objectives • The study tour to Zohurul Fish Farm aimed to provide an objective understanding of broodstock management processes done in the farm. Discussion A good broodstock management system consider the following measures: 1. Sources of broodfish 2. Selection of broodfish 3. Collection of broodfish 4. Rearing of broodfish
- 3. 3 | P a g e Here are some general guidelines for rearing of broodfish followed by Zohurul Fish Farm: a) Location: Choose a suitable location for the pond that is close to a water source and has good drainage. b) Size and shape: Decide on the size and shape of the pond based on its intended use and the available space. Rectangular ponds are commonly used in Bangladesh. c) Excavation: Excavate the pond area to the desired depth and shape. Use the excavated soil to construct an embankment around the pond to prevent water seepage. d) Lining: Line the pond with a layer of clay or bentonite to prevent water leakage. e) Inlet and outlet: Provide an inlet for filling the pond with water and an outlet for draining excess water. f) Water supply: Ensure a reliable water supply for the pond, such as a nearby river or well. g) Aeration: Consider installing aeration systems to promote oxygen exchange and prevent algae growth. h) Fish stocking: If using the pond for fish farming, stock the pond with appropriate fish species and ensure proper feeding and maintenance. i) Maintenance: Regularly maintain the pond by removing debris, controlling weeds and algae growth, and monitoring water quality. Renu Procedure: A fish begins to spawn from the age of 3 years. Hormones are pushed every March for spawning. Three ponds were injected one day per week before 21 days of injection. Fishing starts at 12 PM for conditioning and dosing starts at 10 PM. Half the male dose is given to the female (half the cc dose is given to the male if 1 cc is given to the female). Some advanced medicines have launched into the market which can be provided as same amount to both male and female fish.
- 4. 4 | P a g e ➢ Spawning Age: The fish begins to spawn from the age of 3 years. This means that once the fish reaches the age of 3, it becomes sexually mature and capable of reproducing. ➢ Hormone Injections: To induce spawning, hormones are administered to the fish. According to information hormone injections occur every March. ➢ Injection Schedule: Three ponds are being injected, one day per week, before 21 days of injection. This implies that the hormone injections are administered once a week for three consecutive weeks, starting 21 days before the expected spawning period. ➢ Fishing Conditioning: Fishing starts at 12 PM for conditioning. This suggests that before the hormone injections, the fish undergo a conditioning period that prepares them for spawning. The purpose of this conditioning phase may vary depending on the specific fish species and breeding program. ➢ Dosing Timing: The dosing process begins at 10 PM. This likely refers to the administration of the hormones to the fish. The reason for conducting the dosing at this particular time is not specified. ➢ Male and Female Doses: According to Mr. Parvej’s information, the male fish receive half the dose and the female fish receive the full dose. Similarly, if 1 cc is given to the female, the male receives half a cc. This dosage practice suggests a specific ratio or proportionality between the male and female fish when it comes to hormone administration. ➢ Dose Names: Mr. Parvej mentioned "Ovohom," "Ovopin," and "Yon" as the names of the hormone doses. Ovulation Timing: Ovulation, the release of eggs from the female fish, typically occurs between three hours and seven to eight hours after the hormone injection. This indicates the approximate timeframe within which the fish's reproductive process is initiated after the administration of hormones.
- 5. 5 | P a g e Price List: Name Price (Taka/Kg) • Rui 2400 • Catla 2400 • Mrigal 2000 • Grass carp 2000 • Sarpunti 1600 • Bata 2400 • Big Head 1600 • Silver carp 1600 • Monosex Tilapia 1tk/piece Overview: The study tour to Zohurul Fish Farm was a testament to our university’s commitment to providing us with holistic and practical education. It not only bridged the gap between theory and practice but also instilled in us a passion for exploring innovative approaches towards broodstock and hatchery management system.
- 6. 6 | P a g e Conclusion: The study tour of Zohurul Fish Farm made a connection between our academic knowledge and the practical implementation of this knowledge. Though the study tour was short, it was a significant knowledge-based tour. We have come in contact with fish processors in the real world, which will make us more professional in this sector in the future. Acknowledgment: I would like to say thanks to Bangamata Sheikh Fajilatunnesa Mujib Science and Technology University's Department of Fisheries for organizing such an effective study excursion. Also, I would like to give thanks to the educators in this department, especially Dr. Mahmudul Hasan, Md Mokhlasur Rahman, and Mohammad Rafiqul Bari for their excellent advice. We would especially want to thank Mr. Parvej from Zohurul Fish Farm for guiding us all through that fish farm system. Finally, a big thanks to all of our classmates for helping to make this study tour a success.