Pengaruh Padat Tebar Terhadap Frekuensi Moulting Lobster Pasir (Panulirus homarus) pada Keramba Dasar

Fitriyaningsih, Hesti and Dr. Ir. Mohamad Fadjar,, M.Sc. and Ir Ellana Sanoesi,, MP. (2023) Pengaruh Padat Tebar Terhadap Frekuensi Moulting Lobster Pasir (Panulirus homarus) pada Keramba Dasar. Sarjana thesis, Universitas Brawijaya.

Abstract

Kegiatan budidaya lobster pasir (Panulirus homarus) berperan penting dalam menjaga ketersediaan lobster di alam serta untuk memenuhi permintaan terhadap lobster pasir (P. homarus) di pasar internasional. Budidaya lobster dapat dilakukan dengan beberapa metode seperti keramba jaring apung (KJA), keramba jaring tancap (KJT), dan kurungan perairan dasar. Namun kendala dalam budidaya lobster diantaranya adalah rendahnya tingkat pertumbuhan dan kelangsungan hidup yang disebabkan oleh salah satunya kepadatan yang tidak sesuai. Padat tebar yang tidak sesuai atau berlebih akan mempersempit ruang gerak dan kompetisi dalam memperoleh makanan. Asupan pakan yang tidak tercukupi dapat menyebabkan terhambatnya pertumbuhan lobster pasir (P. homarus) sehingga frekuensi molting menurun. Molting pada lobster sendiri merupakan proses pergantian kulit akibat adanya pertumbuhan bobot atau panjang tubuh. Oleh karena itu, penelitian ini bertujuan untuk mengetahui pengaruh padat tebar terhadap frekuensi molting lobster pasir (P. homarus) yang dibudidaya pada keramba dasar. Penelitian dilaksanakan pada bulan Oktober hingga bulan November 2022 bertempat di Pantai Sangkong Grand Watu Dodol, Banyuwangi, Jawa Timur. Metode yang digunakan dalam penelitian ini adalah metode eksperimen dengan Rancangan Acak Lengkap (RAL) serta dianalisis dengan bantuan microsoft excel dan aplikasi SPSS. Penelitian ini terdiri dari tiga perlakuan dan tiga ulangan. Perlakuan yang digunakan yaitu perbedaan padat tebar dengan perlakuan A sebanyak 2 ekor lobster, perlakuan B 3 ekor lobster, dan perlakuan C sebanyak 4 ekor lobster. Data yang diambil yaitu frekuensi molting, panjang, dan berat tubuh lobster serta data kualitas air selama pemeliharaan 35 hari. Hasil penelitian menunjukkan bahwa dari parameter utama berupa frekuensi molting dan pertumbuhan berat mutlak lobster pasir (P. homarus) dipengaruhi secara nyata oleh perbedaan padat tebar yang dibuktikan dengan hasil analisis statistika Uji ANOVA. Namun padat tebar tidak berpengaruh terhadap pertumbuhan panjangnya. Berdasarkan hasil anilisis uji BNT, diketahui bahwa perlakuan A yaitu dengan kepadatan 2 ekor lobster merupakan perlakuan dengan pengaruh terbaik dan berdasarkan hasil uji polinomial orthogonal, sebesar 71% perbedaan padat tebar berpengaruh terhadap frekuensi molting lobster pasir (P. homarus). Pertumbuhan berat mutlak diperoleh sebesar 7,83 gram sebagai rerata tertinggi pada perlakuan A dan sebesar 66% perbedaan padat tebar berpengaruh terhadap pertumbuhan berat mutlak lobster pasir berdasarkan hasil uji polinomial orthogonal.

English Abstract

Sand lobster (Panulirus homarus) cultivation activity plays an important role in maintaining the availability of lobsters in nature and to meet the demand for sand lobsters (P. homarus) in the international market. Lobster cultivation can be carried out using several methods such as floating net cages (KJA), fixed net cages (KJT), and bottom water confinement. However, the obstacles in lobster cultivation include low growth and survival rates which are caused by inappropriate density. Inappropriate or excessive stocking densities will narrow the space for movement and competition in obtaining food. Insufficient feed intake can inhibit the growth of sand lobsters (P. homarus) so that the frequency of molting decreases. Molting in lobster itself is a process of changing the skin due to the growth of body weight or length. Therefore, this study aims to determine the effect of stocking density on the molting frequency of sand lobsters (P. homarus) cultivated in bottom cages. The research was conducted from October to November 2022 at Sangkong Grand Watu Dodol Beach, Banyuwangi, East Java. The method used in this study is an experimental method with a completely randomized design (CRD) and analyzed with the help of Microsoft Excel and the SPSS application. This study consisted of three treatments and three replications. The treatment used was the difference in stocking density with 2 lobsters in A treatment, 3 lobsters in B treatment, and 4 lobsters in C treatment. The data collected were the frequency of molting, length and body weight of the lobsters as well as water quality data during 35 days of maintenance. The results showed that the main parameters such as molting frequency and absolute weight growth of sand lobsters (P. homarus) were significantly affected by differences in stocking densities as evidenced by the statistical analysis results of the ANOVA test. However, stocking density did not affect the growth in length. Based on the results of the BNT test analysis, it was found that treatment A, with a density of 2 lobsters, was the treatment with the best effect and based on the results of the orthogonal polynomial test, 71% difference in stocking density had an effect on the molting frequency of sand lobsters (P. homarus). Absolute weight growth was obtained at 7.83 grams as the highest average in treatment A and by 66% the difference in stocking density had an effect on the absolute weight growth of sand lobsters based on the results of the orthogonal polynomial test.

Item Type:	Thesis (Sarjana)
Identification Number:	0523080121
Uncontrolled Keywords:	Frekuensi, Lobster Pasir, Molting, Padat Tebar, Pertumbuhan
Subjects:	600 Technology (Applied sciences) > 639 Hunting, fishing & conservation > 639.3 Culture of cold-blooded vertebrates
Divisions:	Fakultas Perikanan dan Ilmu Kelautan > Budidaya Perairan
Depositing User:	soegeng Moelyono
Date Deposited:	04 Sep 2023 02:26
Last Modified:	04 Sep 2023 02:26
URI:	http://repository.ub.ac.id/id/eprint/202753

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