Umur dan berat menjadi target dalam proses domestikasi induk oleh karena berpengaruh terhadap performa reproduksi. Penelitian bertujuan untuk mengetahui pengaruh umur terhadap performa reproduksi induk P. indicus. Dua seri penelitian telah dilaksanakan di Unit Pembenihan BBPBAP Jepara menggunakan induk hasil domestikasi generasi-1 (G-1) di tambak pada umur 11 bulan (U-11) dan 14 bulan (U-14). Proses maturasi dan pemijahan dilaksanakan dalam ruangan terpisah dan tertutup. Pemeliharaan dan produksi benih menggunakan bak semen kapasitas 10 m-3 sesuai dengan protokol sistem produksi benih udang penaeid di BBPBAP Jepara. Hasil penelitian menunjukkan bahwa perbedaan umur (U-11 dan U-14) berpengaruh secara signifikan (p<0.05) terhadap laju pemijahan harian (18,78±4,6 %h- vs 8,85±3,69 %h-), produksi nauplius (47.000±2.400 N induk- vs 27.421±8.555 N induk-) dan frekuensi pemijahan (1,67 selama 9 hari vs 1,79 selama 22 hari) serta sintasan benih (26,81±7,30% v 37,27s ± 1,95%). Hasil dari penelitian ini disimpulkan bahwa untuk kepentingan produksi benih secara massal maka induk poduktif yang digunakan berumur 11 bulan. Performa reproduksi induk kurang dari umur tersebut perlu dikaji lebih lanjut.
This study investigated several parameters for cell-wall disruption from microalgae Chlorella vulgaris during catalytic ozonation over microporous carbon-supported titanium oxide, including flow ozone, catalytic time, and reactor capacity. At the same time, the cell-wall disruption yield and an active compound yield such as chlorophyll and carotenoid were evaluated for each pretreatment. The required delivered flow ozone to achieve 76,47% cell-wall disruption of Chlorella vulgaris was 1 minute at 4 LPM, which produced chlorophyll 56,75% and carotenoid 89,09%. Carbon-supported titanium oxide reduces the required O3 dose and catalytic time for cell-wall disruption; however, it limited chlorophyll yield did not exceed 75,67%. Pretreatment with 1 minute at 1 LPM in 2 liters produced carotenoid yield by approximately 98,18%, though it reduced chlorophyll to 59,45%.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.