Biochemical analysis and fertilization success of Cirrhinus mrigala ova during induced spawning

• Published in: Animal reproduction science 2024-11, Vol.270, p.107617, Article 107617
• Main Authors: Sherzada, Shahid, Ahmad, Tanveer, Khan, Saeed Akram, Inayat, Muhammad, Ahmad, Sohail, Rahman, Abdur
• Format: Article
• Language: English
• Subjects: Cirrhinus mrigala; Egg productivity; Egg quality; Fatty acids; Mineral content
• ISSN: 0378-4320; 1873-2232; 1873-2232
• DOI: 10.1016/j.anireprosci.2024.107617

Fish egg quality is very crucial in aquaculture sector for production of healthy seed. Egg yolk is an energy reservoir for growth and development of embryo. This study evaluated the biochemical composition and quality of Cirrhinus mrigala eggs at three different hatchery sites of Pakistan, (Site 1= Fish Seed Hatchery, District Pakpattan; Site 2= Sidhuwan Hatchery, Head Balloki, District Kasur; Site 3= Chenab Fish Hatchery, Rangpur, District Muzaffargarh) during induced breeding. For this, a total of 36 (18 males and 18 females) fish brooders, 12 (06 males and 06 females) from each site were utilized. Fatty acids analysis revealed significant differences among three different sites. Saturated fatty acids i.e., palmitic acid (C16:0) and stearic acids (C18:0) were higher at site 2 compared to the others sites. Monounsaturated fatty acids i.e., Oleic acid (C18:1) and polyunsaturated fatty acids i.e., Docosahexaenoic acid (DHA) (C22:6) exhibited considerably greater values at site 2 than those of other two sites. Egg mineral contents unveiled remarkable differences, particularly at site 2 indicating significantly higher mineral contents except copper (Cu) in comparison to the other sites. Significant variation exists in fertilization and hatching rates during induced spawning, with the highest values recorded at site 2. It is concluded that biochemical composition of egg especially fatty acid profile and mineral content greatly influences the embryonic development and hatching success of farm reared Cirrhinus mrigala. •A pioneer study evaluating biochemical composition of fish egg from Pakistan.•Significant differences were observed in mineral and fatty acids profile of eggs.•Embryonic development and hatching success of Cirrhinus mrigala is affected by egg fatty acid profile and mineral content.•Optimum egg biochemical composition is a key indicator of quality seed production and sustainable aquaculture.