Hormonal Induction Impacts on Grass Carp (Ctenopharyngodon idella) Broodstock Health and reproduction capacity and Progeny Survival and growth performance"

Faculty Science Year: 2025
Type of Publication: ZU Hosted Pages:
Authors:
Journal: Bulletin of the faculty of science – Zagazig university Zagazig University; Faculty of Science. Center of Scientific Studies and Researches Volume:
Keywords : Hormonal Induction Impacts , Grass Carp (Ctenopharyngodon    
Abstract:
The herbivorous feeding behavior of grass carp (Ctenopharyngodon idella) makes it crucial to remove excess aquatic vegetation, which is one of the primary factors to be taken into account when cultivating this species. Therefore, in addition to its commercial potential as an edible fish species, grass carp production can be employed as a biological control of aquatic vegetation. In order to determine the impact of hormonal stimulation on the quality of eggs, the health of broodstock, and the growth performance of fries, this study has investigated a number of parameters, including the number and diameter of eggs, serum urea, total cholesterol, and triglycerides for both male and female broodstock, in addition to the weight and length gain of fries over the course of eight weeks and the survival rate of fries.. The former studies were conducted after injecting grass carp males and females with ovaprim, pituitary extract, and a combination of ovaprim and pituitary extract in three treatments. Comparing Ovaprim (T1) to other treatments, it performed better in terms of female weight gain (9.22 ± 0.25 kg post injection), higher egg production (1.51 ± 0.3 million eggs/female), and greater egg density in females ovaries (680,000 ± 1,200 eggs/kg). It also demonstrated the highest length increment of fries, averaging 0.75 cm/week for five of the seven weeks. According to this study, the first treatment produced the best fries in terms of weight, length, survival rate, mortality rate, and growth performance. This was followed by the second treatment and then the third. Therefore, ovaprim is advised for artificial grass carp spawning hormone stimulation.
   
     
 
       

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