Study on the dietary effects of Housefly larvae (Musca domestica) on fecundity and growth rate of Litopenaeus vannamei spawners

In order to evaluate the dietary effects of housefly larvae (Musca domestica) as an alternative to Perinereis nuntia, on fecundity rate and larval stages development of Pacific white leg shrimp Litopenaeus vannamei, 30 pairs of L. vannamei shrimp were stocked in 3 fiberglass tanks of 5 tones containing filtered seawater under identical conditions. The brooders were fed with 3 diets including conventional diets of hatchery (P. nuntia, squid, oysters and food pellets), along with 5% of housefly larvae as a supplement (Diet A), conventional diets of hatchery along with 10% of housefly larvae as an alternative to P. nuntia (Diet B) and conventional diets of hatchery as a control (Diet C). The experiment results showed that diet A presented significant differences in promoting fecundity rates of shrimp broodstocks with the other treatments (p<0.05). The number of hatching eggs (hatching) in the treatments did not show any significant difference (p>0.05). The larval development stages of hatched eggs produced with different treatments showed that a greater percentage of larvae from broodstocks fed with diet A have developed faster to the next stage than the other two treatments, which has shown a significant difference (p<0.05), especially in post-larvae stages. However, the use of housefly larvae diet as a supplement to conventional diets of hatchery can increase the fecundity rates of shrimp broodstocks and result in faster larval development; but as an alternative to the polychaete worm (P. nuntia) in conventional diets of the hatchery, have no effect on shrimp broodstock hatcheries.