Local and overseas carp pituitary gland in the induced breeding of Cirrhinus mrigala (Hamilton 1822)

Abstract

Stimulating hormone for artificial fish breeding in hatchery industry is very crucial for hatching operation, healthy fry and fingerling production, while overall fish production of a country. The present study was conducted to assess the effectiveness of using local and overseas Carp Pituitary Gland (CPG) in the induced breeding of Cirrhinus mrigala at Jashore district from April to May 2022. The first dose of hormone, both for male and female brood fishes were injected with local and overseas CPG at 0.5mg/kg body weight. After six hours of the first dose, only female brood fishes were injected with the second dose of PG at 5 mg/kg body weight. After 6 hours of second dose CPG injection of local and overseas PGs, brood fishes started spawning. The ovulation rates for both local and overseas PGs were estimated 100%. The fertilization rates were 93.5 % and 92.6 % for local and overseas PGs; while the hatching rates were 91.2% and 89.5%, respectively. However, local CPG is highly recommended to hatchery owners considering the rate of fertilization, hatching rate and availability. Asian J. Med. Biol. Res. 2022, 8 (3), 146-153

Degree-hours to spawning response, fertilization rate and hatching of Labeo rohita and Cirrhinus mrigala through induced breeding under hatchery environment.

“…Both species showed maximum hatching rate at high temperature 25.42ºC. Previous studies have illustrated that increase in temperature up to optimum has direct effect on hatching rate which supports the current findings (Alam et al, 2022;Naeem et al, 2013).…”

“…Ovulation rate in Rohu and Mrigala were found (100%) with single dose of ovaprim. The similar outcomes were reported by (Alam et al, 2022;Naeem et al, 2013). It was noted that spawning response time in Rohu (Labeo rohita) occurred within 8.30 hours, 9.27 hours, 9.43 hours and10.40 hours and in Mrigala (Cirrhinus mrigala) it was 9.23 hours, 9.58 hours, 10.38 hours and 11.20 hours at water temperature range 27.4±0.03ºC, 26.9±0.024ºC, 25.9±0.028ºC and 24.8±0.03ºC respectively (Table 3 and Table 4).…”

Pelatihan Peningkatan Kompetensi Siswa SMKN 1 Watulimo Prigi Dalam Mendukung Lomba Keterampilan Siswa (LKS) 2022

“…Teknik hipofisis (pembiakan yang diinduksi melalui kelenjar pituitari) dipraktikkan di seluruh negeri guna merangsang pemijahan ikan dalam proses budidaya (Alam et al, 2022;Chaube, 2023;Khan et al, 2023). Tujuan dari pelatihan ini adalah untuk mensosialisasikan bagaimana cara membudidayakan ikan lele dengan penerapan teknik pemijahan Hipofisasi dan hormon ovaprim untuk menghasilkan bibit ikan lele berkualitas yang akan disebarkan ke dalam kolam pemeliharaan.…”