Effect of sargassum powder on growth and reproductive potentials of brine shrimp artemia parthenogenetica
International Journal of Development Research
Effect of sargassum powder on growth and reproductive potentials of brine shrimp artemia parthenogenetica
Received 11th January, 2018, Received in revised form, 19th February, 2018, Accepted 24th March, 2018, Published online 30th April, 2018
Copyright © 2018, Kalai selvi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Dietary influence of Sargassum powder (250mg, 500mg, 750mg and 1000mg) on the growth and reproductive capabilities of Artemia parthenogenetica fed with rice bran has been described in this paper. At the end of 5th week, the survival percentage was increased from 51.6±2.46% to 59.0±1.51%. The maximum life span of Artemia was extended from 90.6±2.09 (control) to 94.3±2.93 days. The length of Artemia increased from 83.2±1.61mm (control) to 85.3±2.41mm. The biomass of Artemia increased from 76.3±1.62 mg (control) to 84.9±1.17mg. The FCR increased from 69.2±1.68% (control) to 71.4±1.74%. The maturation period decreased from 23±2.58 days (control) to 15±2.58 days. Gestation period decreased from 5.8±1.09 days (control) to 4.8±0.81 days. Reproductive period was extended from 32.3±3.30 days (control) to 37.1±3.79 days. Sargassum powder increased the number of broods/Artemia from 5.03±0.61 (control) to 7.3±0.59 while the inter-brood duration was reduced from 4.62±0.48 days (control) to 4.26±0.56. The number of nauplii per brood increased from 43.26±2.21to 59.38±2.09, but the number of cysts/ brood decreased from 1.2±0.19 to 0.8±0.1. The diameter of cyst reduced from 241.4±29.4µm to 227.3±18.2µm (at 500mg). Hatching percentage of cysts increased significantly (p<0.05) from 54.2±2.07% (control) to 68.2±2.56% (at 500mg). Fecundity of Sargassum fed cultures of Artemia was 251.4±9.43 instead of 181.04±7.68 in the control. The post reproductive period in the Sargassum fed Artemia was 11.4±1.19 days instead of 10.3±1.39 in the control. Sargassum powder provided some extra amounts of crude proteins, dietary fibres, essential amino acids, fatty acids, minerals and vitamins in addition to the normal amounts supplied by rice bran. Hence, Sargassum powder supports the growth and biomass production as well as the reproductive attributes of Artemia, but higher doses do not have such effects due to excess of minerals. The maximum dietary supplementation effect was noted at 500mg dose of Sargassum.
