PENGARUH PENAMBAHAN SILASE ARTEMIA DALAM PELET GEL TERHADAP PERTUMBUHAN, PERSENTASE MOLTING DAN TITER EKDISON LOBSTER HIJAU PASIR (Panulirus homarus L.) FASE JUVENIL

Muhsinul Ihsan, Drs. Trijoko, M.Si.

2013 | Tesis | S2 Biologi

Lobster Hijau Pasir (Panulirus homarus L.) merupakan komoditas budidaya yang sangat potensial untuk dikembangkan di Pulau Lombok. Pengembangan budidaya lobster terkendala oleh kualitas pakan yang rendah sehingga pertumbuhan, persentase molting dan titer ekdison pada lobster tidak optimal. Penambahan silase artemia diduga dapat meningkatkan pertumbuhan, persentase molting dan titer ekdison secara optimal. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan silase artemia terhadap pertumbuhan, persentase molting dan titer ekdison Lobster Hijau Pasir fase juvenil. Rancangan percobaan menggunakan rancangan acak lengkap dengan 4 perlakuan dan 4 ulangan. Pelet gel tanpa silase artemia sebagai perlakuan 1, sedangkan perlakuan 2, 3 dan 4 masing-masing ditambahkan silase artemia sebesar 3%, 5% dan 7% (v/w). Delapan puluh ekor lobster dengan berat 5,10 ± 0,27 g diperlakukan selama 42 hari pada bak terkontrol (1500 L) dalam 16 keranjang dengan jumlah 5 ekor/keranjang. Pelet gel dibuat dengan menambahkan agar-agar cair, sedangkan silase artemia dengan menambahkan asam formiat dan asam propionat. Pakan diberikan sebanyak tiga kali sehari. Parameter yang diamati adalah tingkat pertumbuhan (pertambahan biomassa dan daily growth coefficients (DGC)), feed conversion ratio (FCR), persentase molting dan titer ekdison. Hasil penelitian menunjukkan bahwa rata- rata pertambahan biomassa berkisar antara 0,39-0,86 g, DGC 0,14-0,31%/hari, FCR 9,45-17,26, persentase molting 8,03-12,50%, dan titer ekdison 2,09-3,92 μg/ml hemolimfa. Analisis varian pertambahan biomassa, DGC, FCR, dan persentase molting tidak berbeda nyata (P>0,05) pada semua perlakuan. Silase artemia belum dapat mengoptimalkan pertumbuhan, persentase molting dan titer ekdison Lobster Hijau Pasir (Panulirus homarus L.), sehingga hubungan antara tingkat pertumbuhan, persentase molting dan titer ekdison tidak linier.

Spiny Lobster (Panulirus homarus L.) is one of the commodity that very potential to be developed in Lombok Island. The aquaculture of lobster was still limited due to the lack of the feed quality decreasing the growth, molting percentage and ecdyson titre of the lobster. The addition of artemia silage in gel pellets may improve the growth rate, molting percentage and ecdyson titre. The aims of this study were to determine the effect of artemia silage on the growth rate, molting percentage and ecdyson titre Panulirus homarus L. in juvenile phase. The experiment design used a completely randomized design with four treatments and four replications. Gel pellets without artemia silage was used for treatment 1, whereas treatment 2, 3 and 4 were added by artemia silage 3%, 5% and 7% (v/w) respectively. Eighty lobsters (5,10 ± 0,27 g) were treated for 42 days at four tanks (1500 L) in 16 baskets (5 seeds/basket). Gel pellets were made by adding the agar liquid, whereas artemia silage was made by adding the formic acid and propionic acid. The lobsters were fed three times/day. The parameters observed on this research were weight gain, daily growth coefficients (DGC), feed conversion ratio (FCR), percentage of molting, and titre of ecdyson. The result showed the average of weight gain ranged between 0,39-0,86 g, DGC 0,14-0,31%/day, FCR 9,45- 17,26, molting percentage 8,03-12,50%, and ecdyson titre 2,09-3,92 μg/ml hemolimph. Analysis of variants indicated that weight gain, DGC, FCR, and molting percentage were not significantly different (P>0,05) among all of the treatments. Artemia silage has not been able to increase optimally the growth rate, the percentage of molting and the ecdyson titre. So that the relationship between growth rate, molting percentage and ecdyson titre were not linear.

Kata Kunci : silase artemia, pertumbuhan, molting, ekdison, Panulirus homarus L