Rahayu Pratiwi, Rahayu
Program Studi Budidaya Perairan, Jurusan Perikanan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

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ANALISIS KARAKTER REPRODUKSI HASIL PERSILANGAN ANTARA IKAN NILA PANDU F6 DAN NILA MERAH LOKAL AQUAFARM DENGAN SISTEM RESIPROKAL Pratiwi, Rahayu; Basuki, Fajar; Yuniarti, Tristiana
Journal of Aquaculture Management and Technology Volume 5, Nomor 1, Tahun 2016
Publisher : Journal of Aquaculture Management and Technology

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Abstract

Ikan nila adalah ikan air tawar yang memiliki nilai ekonomis penting, proses budidaya yang mudah, dan disukai oleh masyarakat. Hal ini mendorong pembudidaya untuk menghasilkan ikan nila spesies baru dengan strain unggul melalui persilangan. Penelitian ini bertujuan untuk mengetahui karakter reproduksi dari persilangan ikan nila Pandu F6 dengan strain ikan nila merah lokal aquafarm secara resiprokal dan mengetahui persilangan antar strain ikan nila Pandu F6 dan nila merah lokal aquafarm secara resiprokal yang menghasilkan karakter reproduksi dan performa benih pendederan I yang lebih baik. Ikan nila dengan bobot rata-rata betina 180 – 230 g/ekor dan rata-rata jantan 250 – 380 g/ekor. Penelitian ini menggunakan metode eksperimen rancangan acak lengkap (RAL) dengan 4 perlakuan dan 3 ulangan. Penelitian ini menggunakan perlakuan sebagai berikut: perlakuan A (strain nila Pandu F6 ♂ >< nila Pandu F6 ♀), perlakuan B (strain nila Pandu F6 ♂ >< nila merah lokal aquafarm ♀), perlakuan C (strain nila merah lokal aquafarm ♂ >< nila Pandu F6 ♀) dan perlakuan D (strain nila merah lokal aquafarm ♂ >< nila merah lokal aquafarm ♀). Parameter yang diamati meliputi fekunditas, hatching rate (HR), bobot dan diameter telur, bobot dan panjang larva kuning telur, bobot dan panjang larva lepas kuning telur, laju pertumbuhan spesifik (SGR), rasio konversi pakan (FCR), kelulushidupan (SR), dan kualitas air. Hasil penelitian ini menunjukkan bahwa terdapat pengaruh nyata (P<0.05) terhadap karakter reproduksi panjang larva lepas kuning telur 0,97±0,08 cm, fekunditas 432,33±42,90 butir telur/200 g, Hatching rate (HR) 72,22±0,56 %, laju pertumbuhan spesifik (SGR) 6,97±0,79 %, rasio konversi pakan (FCR) 0,89±0,07, dan kelulushidupan (SR) 72,62±0,47 % dan hasil persilangan terbaik didapatkan pada perlakuan A (strain pandu F6 ♂ dengan nila pandu (F6) ♀) dan perlakuan C (strain nila merah lokal aquafarm ♂ dengan nila pandu F6 ♀) dilihat dari karakter reproduksi pada panjang larva lepas kuning telur, fekunditas, hatching rate (HR), laju pertumbuhan spesifik (SGR), rasio konversi pakan (FCR), dan kelulushidupan (SR). Tilapia was a freshwater fish that has an important economic value, the cultivation process was easy, and favored by the public. It encourages farmers to produce a new species of tilapia with superior strains through crossbreeding. This study was aimed to knowing the reproduction character of tilapia Pandu F6 cross with local strain red tilapia fish aquafarm reciprocally and to knowing crosses between strain of tilapia Pandu F6 and local strain red tilapia fish aquafarm reciprocally that produce better  reproduction character and seed nursery performance. Females tilapia with an average weight of 180-230 g/fish and the average of male 250-380 g/fish. This study used an experimental method completely randomized design (CRD) with 4 treatments and 3 replications. This study uses a treatment include: treatment A (strain pandu tilapia fish (F6) ♂ >< pandu tilapia fish F6 ♀), treatment B (strain pandu tilapia fish F6 ♂ >< local red tilapia aquafarm ♀), treatment C (strain of local red tilapia aquafarm ♂ >< pandu tilapia fish F6 ♀) and treatment D (strains of local red tilapia aquafarm ♂ >< local red tilapia aquafarm ♀). The parameters observed were fecundity, hatching rate (HR), the weight and diameter of eggs, weight and length of larvae yolk, weight and length of the larvae off the yolk, the specific growth rate (SGR), feed conversion ratio (FCR), survival rate (SR) , and water quality. These results indicate that there was a significant effect (P <0.05) on the reproduction character length of the larvae off the yolk 0,97±0,08 cm, specific growth rate (SGR) 6.97±0.79 %, feed conversion ratio (FCR) 0.89±0.07 and survival rate (SR) 72.62±0.47 %  and best crosses result obtained in the treatment A (strain of Pandu tilapia fish F6 ♂ >< pandu tilapia fish F6 ♀) and treatment C (strains of red tilapia local aquafarm ♂ with pandu tilapia fish F6 ♀) seen from reproduction character such as the length of the larvae off the yolk, fecundity, hatching rate (HR), specific growth rate (SGR), feed conversion ratio (FCR) and survival rate (SR).
IMPLEMENTASI PENDEKATAN PENDIDIKAN MATEMATIKA REALISTIK UNTUK MENINGKATKAN HASIL BELAJAR DAN DISPOSISI MATEMATIS Pratiwi, Rahayu; Mirza, Ade; ., Hamdani
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 5, No 3 (2016): Maret 2016
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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Abstract

Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh pembelajaran dengan pendekatan pendidikan matematika realistik terhadap peningkatan hasil belajar dan disposisi matematis siswa di Sekolah Menengah Pertama Negeri 2 Pontianak. Metode penelitian yang digunakan adalah pre-eksperimental dengan rancangan penelitian one group pretest-posttest dengan subjeknya adalah 37 siswa kelas VII C di SMP Negeri 2 Pontianak tahun ajaran 2015/2016. Instrumen yang digunakan adalah tes essay untuk mengukur hasil belajar dan angket untuk mengukur disposisi matematis siswa. Hasil analisis data menunjukkan bahwa pembelajaran dengan pendekatan pendidikan matematika realistik berpengaruh terhadap hasil belajar dengan  Effect Size 4,55 berkategori tinggi dan disposisi matematis dengan Effect Size 0,93 berkategori tinggi.   Kata kunci: pendidikan matematika realistik, hasil belajar, disposisi matematis Abstrack: The aim of this study is to determine the effect of learning with realistic mathematics education approach to increase the learning achievement and student’s mathematical disposition in SMPN 2 Pontianak. The research methods is using pre-experimental with one group pretest-posttest design with it’s subject is 37 students from class VII C in SMPN 2 Pontianak 2015/2016 academic year. The instrument was used is essay test to measure of learning achievement and questionnaire to measure of student’s mathematical disposition. The results of data analysis showed that learning with realistic mathematics education approach has effect on the learning achievement with Effect Size 4,55 high category and mathematical disposition with Effect Size 0,93 high category.   Keywords: realistic mathematics education, achievement, mathematical disposition
EFEKTIVITAS PEMBELAJARAN MENGGUNAKAN E-BOOK MATERI FUNGSI INVERS PADA SISWA SMA NEGERI 1 TEMPUNAK Pratiwi, Rahayu
Jurnal AlphaEuclidEdu Vol 5, No 1 (2024): Volume 5 Number 1 Juli 2024
Publisher : UNIVERSITAS TANJUNGPURA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/ja.v5i1.74856

Abstract

Student achievement in learning mathematics in class X MIPA SMA Negeri 1 Tempunak is still low. This is due to the lack of use of learning media in mathematics lessons. So that the understanding of concepts, activeness, motivation and student response to the lessons delivered is less acceptable to students. So that students obtain low learning outcomes and are passive in learning. The purpose of the study was to determine the effectiveness of using e-books on inverse function material in grade X students of SMA Negeri 1 Tempunak. The subjects in this study were 22 students of grade X MIPA SMA Negeri 1 Tempunak. This study used descriptive qualitative research. The research instruments are observation sheets for learning implementation, observation sheets for student activities, response questionnaires, and learning outcome test questions. The results showed that: (1) 81.25% of learning implementation went according to what was planned in the RPP; (2) student activity obtained an overall grade point average of 85.4% and during learning students were actively involved; (3) student response questionnaires to the use of e-books in learning received positive responses with a classically average score of 77%; (4) Student learning outcomes when using e-books are categorized as good by obtaining a classical average score of 81.81% of students getting scores that exceed standard KKM scores. So that mathematics learning using e-book material on the inverse function for grade X students of SMA Negeri 1 Tempunak is effective.Keywords: Effectivenes, E-Book, Inverse Function