Advanced Research Journal of Plant and Animal Sciences

ISSN 2360-7947

Effect of Azanza Garckeana (Goron Tula) Pulp Powder on Fertility, Hatchability and Fry Survival of Clarias Gariepinus


Abstract

This experiment was conducted to investigate the effect of Azanza garckeana on egg fertilization, hatchability and fry survivability of Clarias gariepinus in culture system, for a period of four weeks. The results show that number of fertile eggs and fertilization rate for week 1 to week 4 differs significantly among all the treatment groups (p > 0.05). In the first week, T2 recorded the significantly highest number of fertile eggs (63764.66±7628.54) and fertilization rate (83.00±1.00 %) compared with other treatments (p < 0.05). In week 2, T2 also recorded the significantly highest number of eggs (60117.66±5673.12) while fertilization rate was significantly highest in T5, T2, and T3 (83.33±1.52 %, 81.33±1.52 %, and 81.00±1.99 %) respectively. in week 3 show that number of fertile eggs was significantly highest (57006.66±5929.07) in T2 compared with other treatment groups while fertilization rate was significantly highest (83.38±2.50 %) in T5 as compared with other treatment groups (p < 0.05). In week 4, both T2 and T4 has the significantly highest number of fertile eggs (62802.66±11735.38 and 55282.00±7329.18) compared with other treatment groups, while T5 has the significantly highest fertilization rate (84.66±1.52 %) compared with other treatment groups (p < 0.05). Eggs, hatchability and survival rates differs significantly among all the treatment groups (p > 0.05) in all the weeks studies. In the first week, T2 recorded significantly highest number of hatched eggs (47796.33±5494.90) compared with other treatments while hatchability rate was significantly highest (84.33±1.52 %, 82.53±3.55 %, and 80.76±2.24 %) in T5, T4, and T3 respectively compared with T1 and T2 (p < 0.05). Furthermore, survival rate was significantly highest (100.00±0.00 %) in T4 and T5 respectively and lowest (80.66±2.30 %) in T1. Week 2, the number of hatched eggs was significantly lowest (26954.66±1523.81) in T2 and highest (37067.33±1362.66) in T4. Also, hatchability rate was significantly highest (77.00±1.00 %) in T5 while survival rate was highest (100.00±0.00 %) in T4 and T5 respectively. Week 3 show hatched eggs was significantly highest (34794.00±3966.94) in T2 compared with other treatment groups while hatchability rate was significantly highest (72.66±1.52 % and 67.66±1.52 %) in T5 and T4 respectively as compared with other treatment groups (p < 0.05). Survival rate of week 3 showed similar trend with that of week 1 and 2 respectively. In week 4, both T2 and T4 has significantly highest number of hatched eggs (34417.00±8211.90 and 32159.33±5687.53) respectively compared with other treatment groups, while T5 has the significantly highest hatchability rate (69.38±4.45 %) compared with other treatment groups (p < 0.05). Survival rates of T2, T3, T4 and T5 did not differ significantly (p > 0.05).

Keywords: Azanza garckeana, Egg fertilization, Hatchability, survivability, Clarias gariepinus