Vannamei shrimp is a shrimp that has high economic value in Indonesia. The poor aquatic environment can reduce shrimp growth rates and stress and cause death, and efforts to improve water quality by giving Probiotics EM4. Probiotic EM4 contains beneficial bacteria that can improve shrimp's digestive system, decompose organic matter in the waters, control the growth of pathogenic bacteria, and improve water quality. The experimental parameters included total hemocyte count (THC), differential hemocyte count (DHC) consisting of hyaline cells, granule cells, and semi-granule cells, and phagocytic activity (AF). The study was carried out for 69 days using vanamei shrimp with PL 30. This study used four treatments and three replications, namely treatment P0 (without giving probiotic EM4), P1 (giving probiotic EM4 at a dose of 0.5 ml/L), P2 (giving probiotic EM4 at a dose of 1.5 ml/ L), P3 (giving probiotic EM4 dose of 2.5 ml/L). The study's results proved that the administration of probiotic EM4 on the maintenance medium had a significant effect (P<0.05) on THC, DHC, and AF. At THC, the highest value was at P3 with a value of 19.44 x 10 6 cells/ml, and the lowest was at P0 with a value of 11.01 x 10 6 cells/ml, then the DHC values such as hyaline cells ranged from 51.34 – 65.81%, granule cells ranged from 21.33 – 30.4%, semi-granular cells ranged from 12.84 – 18.24%. And then for the highest AF value at P3 with a value of 67.97% and the lowest P0 with a value of 49.34%
Udang vanamei merupakan salah satu komoditas perikanan yang mempunyai nilai ekonomis tinggi. Desa Kuranji Dalang merupakan salah satu desa yang berada di tepi Pantai Kuranji dengan penghasilan masyarakat didapatkan antara lain dari pertanian dan penangkapan ikan. Saat gelombang tinggi, maka aktivitas penangkapan ikan menjadi terhenti. Hal tersebut dapat berimbas pada berkurangnya pendapatan masyarakat. Penerapan kegiatan buddiaya udang vanamei di Desa Kuranji Dalang perlu dilakukan. Tujuan dari kegiatan pengabdian adalah untuk mengimplementasikan teknologi Budidaya udang vanamei di masyarakat Desa Kuranji Dalang, Lombok Barat. Manfaat dari kegiatan ini adalah masyarakat dapat menerapkan budidaya udang vanamei dan ke depan dapat menjadi salah satu pendapatan masyarakat Desa Kuranji Dalang. Metode pengabdian adalah dengan memberikan pelatihan dengan demplot budidaya udang vanamei di Desa Kurani Dalang serta pendampingan. Hasil pengabdian menunjukkan bahwa pengetahuan msayarakat terkait budidaya udang vanamei meningkat serta dapat menerapkan budidaya udang vanamei dengan didampingi oleh tim pengabdian. Kesimpulan dari kegiatan ini adalah implementasi teknologi budidaya udang vanamei dapat diterapkan dengan baik di masyarakat Desa Kuranji Dalang.
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