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All Journal Jurnal Pembelajaran dan Biologi Nukleus
Afriani, Dwi Tika
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media

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Evaluation and Improvement of The Effectiveness of Floating Pellets with Substitution of Chicken Feather Meal as Optimal Food for The Growth And Survival of Tilapia (Oreochromis niloticus) Pratama, Dimas; Afriani, Dwi Tika; Syafitri, Emmy
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 10, No 2: Jurnal Pembelajaran Dan Biologi Nukleus July 2024
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v10i2.5655

Abstract

This study aims to determine the effectiveness of fishmeal substitution using chicken feather meal in pellets on growth, water quality, and survival of tilapia (Oreocromis niloticus), to determine the effectiveness of fishmeal substitution using chicken feather meal in pellets on FCR value, how the physical test value of floating pellets substituted with chicken feather meal, and what factors need to be updated in an effort to improve the quality of floating pellet feed substituted with chicken feather meal. The results of absolute growth research on fermented chicken feather meal pellets were 5.07 grams/head, non-fermented chicken feather meal pellets were 5.11 grams/head, and conventional pellets were 5.03 grams/head. While the results of absolute length growth on fermented chicken feather meal pellets were 3.21 cm/head, and absolute length growth for non-fermented chicken feather meal pellets was 3.24 cm/head, while for conventional pellets was 3.28 cm/head. The survival rate ranged from 62% - 68% during rearing with an FCR value of 0.6. Although the survival rate obtained was not good, the water quality during the study including pH, DO, and temperature showed good results in accordance with the quality standards. While the results of organoleptic observations of feed showed that the non-fermented artificial feed observed by the testers had a more pungent aroma than the fermented artificial feed, and conventional pellets tended to have a strong odor aroma. As for the texture assessment of the three types of feed, the dominant judge that all three have a hard texture
Analysis Of Microbial Culture Learning: Understanding The Relationship Between Technical Competence And Students' Perspectives At Dharmawangsa University, Medan Afriani, Dwi Tika; Rofieq, Ainur; Huda, Atok Miftachul; Eriyanti, Ribut Wahyu; Hasruddin, Hasruddin
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 10, No 1: Jurnal Pembelajaran Dan Biologi Nukleus March 2024
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v10i1.5370

Abstract

This study examines the relationship between test scores and students' perceptions of learning microbial cultures. The objectives of the research were to determine how students' technical skills correspond with their subjective perceptions of difficulty in various aspects of learning, and to identify the most difficult aspects of learning microbial cultures. Data were collected through tests and questionnaires administered to microbiology practicum students. Analysis revealed a significant correlation between test scores and student perceptions in most aspects of learning, but with variation between aspects. Aspects of basic microbial culture concepts showed a positive correlation, suggesting that students with a strong understanding of the concepts perceived less difficulty. In contrast, bacterial inoculation techniques showed a negative correlation, indicating a mismatch between technical ability and perceived difficulty. The analysis provides a comprehensive view of the factors influencing the learning of microbial culture. The results show that students perceive bacterial inoculation techniques as the most challenging aspect, despite moderately skilled students demonstrating adequate technical ability. Potential sources of technical complexity in the inoculation process, such as steps requiring precision and access to hands-on equipment, contribute to students' perceived difficulty. Although the relationship between test scores and student perceptions of microbial culture learning has been explored in this study, additional research is needed to delve deeper into the complex factors that contribute to this relationship
Effectiveness of Fish Meal Substitution Using Maggot Meal in Floating Pellets on The Growth and Life Survival of Tilapia Fish (Oreochromis niloticus) Sirait, Florentina Pauli; Afriani, Dwi Tika; Manullang, Helentina Mariance
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 10, No 2: Jurnal Pembelajaran Dan Biologi Nukleus July 2024
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v10i2.5836

Abstract

This research was conducted in February-March 2023, at the Dharmawangsa University Laboratory. The purpose of this study was to determine the effectiveness of fish meal substitution using maggot flour in floating pellets on growth, life expectancy of tilapia and FCR (Food Conversion Ratio). Tilapia is widely cultivated by the community so that it has economic value with high market demand. The high price of feed causes many farmers to suffer losses. To overcome the problem of losses, cultivators use maggot as a substitute for fish meal to be used as a local raw material which has the advantage of being relatively cheap, high protein and increasing the digestibility of fish. The research method used experimental methods with the treatment of artificial feeding with fish meal protein sources and maggot flour protein sources and analyzed using the T test. The results of absolute growth research on fish meal pellets were 3.5 and maggot flour pellets 3.6. This shows that maggot flour can be used as a local raw material in the manufacture of fish feed. The results of the survival rate of tilapia by giving fish meal pellets were 60% and giving maggot flour pellets was 55%. Fish meal pellets and giving maggot flour pellets show that they can support the basic needs of fish and can support fish life. The results of the study showed that the FCR value for fish meal pellets was 1.36 and for maggot flour pellets was 1.36.
Co-Authors Ainur Rofieq Dimas Pratama, Dimas Emmy Syafitri Hasruddin Huda, Atok Miftachul Manullang, Helentina Mariance Ribut Wahyu Eriyanti Sirait, Florentina Pauli