Claim Missing Document
Check
Articles

Found 2 Documents
Search

Growth Performance, Feed Efficiency and Feed Cost per Gain of Juvenile Redclaw Crayfish Cherax quadricarinatus Fed Different Commercial Diets Hendriana, Andri; Haifa, Aliya Nurul; Ekasari, Julie; Taufiqulloh; Wahyudi, Imam Tri
Journal of Vocational in Aquaculture (JAVA) Vol 1 No 1 (2024): NOVEMBER 2024
Publisher : College of Vocational Studies, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/java.v1i1.59550

Abstract

Aquaculture production is greatly influenced by species growth, feed efficiency, and feed costs. This study aims to evaluate different commercial diets on growth performance, feed efficiency, and feed cost per gain of juveniles redclaw crayfish Cherax quadricarinatus. The study used three treatments triplicate, consisting of Diet A (commercial diet with crude protein 40%), Diet B (commercial diet with crude protein 41%), and Diet C (commercial diet with crude protein 41%). The initial crayfish, with sizes of 0,24 ± 0,03 g and 2,1 ± 0,1 cm, were stocked in nine glass tanks (100 cm × 40 cm × 40 cm) with a stocking density of 50 crayfish m-2 for 60 days. The crayfish were fed twice daily at 07.00 and 17.00 WIB under a restricted feeding rate of 3% of biomass. The result shows that the final weight, average daily growth, specific growth rate feed conversion ratio, protein retention, and protein efficiency ratio did not differ in each treatment (P>0,05). Besides, the feed cost per gain (FCG) showed that diet B and diet C were better than diet A (P<0,05), with values ​​of IDR 27,679±2,378 kg-1 and IDR 26,579±2,624 kg-1, respectively, which means those treatments having better economic value. So, This study concluded that commercial diet C is recommended as feed for redclaw crayfish because it is more economical.
PENGEMBANGAN MEDIA PEMBELAJARAN BERBASIS LINKTREE DENGAN MODEL INQUIRY BASED LEARNING UNTUK MENINGKATKAN KEMAMPUAN BERPIKIR KRITIS SISWA SDN MANGKUKUSUMAN 1 TEGAL Fidianingrum Yuniasih; Taufiqulloh; Yoga Prihatin
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 10 No. 3 (2025): Volume 10 No3 September, 2025
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v10i3.29048

Abstract

Observation data carried out at SD Negeri Mangkukusuman 1, found that the use  of learning  media has not been developed innovatively and does not support various types of intelligence from students, so that it does not attract students' interest in learning and results in low students' critical thinking skills in the content of science lessons. This research aims to develop  Linktree-based science lesson content   learning media with an Inquiry Based Learning model that meets feasible and effective criteria in improving students' critical thinking skills. This research uses a research and development (R&D) model that adopts the EDED development model which includes  the exploration, development, evaluation and dissemination stages. Data collection uses interview, observation, questionnaire, test and documentation instruments. This study involved 56 students divided into 2 groups, namely the control group which amounted to 28 students of SDN Mangkukusuman 1 class VI A and the experimental group of 28 students of SDN Mangkukusuman 1 class VI B. The results of the study showed that Linktree-based learning   media was considered very feasible by validators with an average of 91.6% in the media aspect, 94.4% in the material aspect. Linktree-based learning   media is also effective in improving students' critical thinking skills with an average difference  of pretest and posttest  scores of 28, as well as the acquisition of N-gain in the experimental group trial of 0.498 and is included in the moderate criteria. The resulting conclusion is that the development  of Linktree-based learning   media with the Inquiry Based Learning  model can meet the learning needs of students and overcome the problem of low critical thinking skills of students. Linktree-based learning   media with the Inquiry Based Learning  model is suitable for use in learning and is effective in improving students' critical thinking skills.