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All Journal Buletin Peternakan Buletin Peternakan Tropis (Bulletin of Tropical Animal Science) BIOSAPPHIRE: Jurnal Biologi dan Diversitas
Widyasari, Dhini Nova
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Environmental Science Immunology & microbiology Veterinary Other

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Performance and Quality of Broiler Meat During Transportation with Various Durations and ZnSO4 level Dhini Nova Widyasari; Niken Ulupi; Rudi Afnan; Rita Mutia; Jonathan Anugrah Lase
Buletin Peternakan Vol 45, No 3 (2021): BULETIN PETERNAKAN VOL. 45 (3) AUGUST 2021
Publisher : Faculty of Animal Science, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21059/buletinpeternak.v45i3.64549

Abstract

Heat stress in the poor transportation systems will impact the oxidative stress, affecting the quality of chicken meat. The decrease in heat stress levels can be trigerred through antioxidants, one of which is ZnSO4 antioxidants, before cutting. This study aimed to examine the reduction of post-transport stress on the performance of chickens, carcasses, and the physical and chemical qualities of broiler meat treated with ZnSO4. The total broiler chickens transported were 324 roosters aged 4 weeks (with 3 replicates each). All of the transported chickens were treated with ZnSO4 at doses of 0, 80, and 160 ppm for 7 days. Next, the chickens were transported with a travel time of 1, 2, and 3 hours. The breast meats were taken (filet) to be used as research samples. A factorial randomized block design was used as the research design and the data were analyzed using ANOVA (analysis of variance). The results showed that there was no correlation between travel time and the ZnSO4 levels on broiler chicken performance (weight and carcass loss) and physicochemical quality of broiler meat (pH value, percentage of water lost, aw, cooking loss, glycogen content and MDA). Longer travel time significantly reduced live weight, carcass percentage, pH value, glycogen content, while increasing the MDA levels. The addition of ZnSO4 can significantly increase the pH value of breast meat, maintain high glycogen levels, increase carcass percentage, and inhibit MDA formation.
Brooding behavior of chickens with reference to a genetic perspective: Perilaku Mengeram pada Ayam Ditinjau dari Perspektif Genetika Bilyaro, Woki; Widyasari, Dhini Nova; Azis, Arif Rahman; Dani, Muhammad
Buletin Peternakan Tropis Vol. 6 No. 1 (2025)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/bpt.6.1.10-14

Abstract

Brooding behavior in chickens is a natural trait that is essential for the continuation of the species. While this behavior is advantageous for hatching eggs, it can also be a drawback for farmers focused on eggs production. Prolonged brooding behavior has the tendency to delay hens from reaching the following egg-laying period. The purpose of this study is to investigate how brooding behavior in chickens is from a genetic perspective. The elimination of the brooding trait can be achieved by improving genetic quality through selection methods such as those used in laying breeds. Once the brooding trait can be reduced or eliminated through selection, the production of eggs will be increased. Prolactin plays a role in the behavior of the hen in terms of incubation, feeding, and nest guarding behavior. Focused selection in chicken breeding has provided farmers with the opportunity to improve brooding traits based on specific objectives, as well as to produce chickens that are better at egg production or for chickens that are more suitable for breeding. Understanding these genetic mechanisms allows farmers to perform genetic selection based on the security of prolactin genes and their associations to control the brooding behavior in accordance with the breeding objectives, either to increase egg production or to maintain natural traits in local chickens. The conclusion is that brooding traits in chickens are highly influenced by various factors, including genetic, hormonal and environmental factors
Peran Genetika pada Sifat Mengeram sebagai Dasar Seleksi pada Ayam Lokal: The role of genetics in brooding traits as a basis for selection in local chickens Bilyaro, Woki; Rahman Azis, Arif; Muhammad dani; Rafian, Teguh; Nova Widyasari, Dhini; Ramadhanti, Nurazizah; Amrullah Chaniago, Rizky; Marisa, Anggun; Maharani Dwipassa, Virna
Buletin Peternakan Tropis Vol. 6 No. 2 (2025): November 2025
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/bpt.6.2.197-202

Abstract

Broodiness is a natural reproductive behavior that plays a vital role in the success of hatching and maternal care in indigenous chickens. This behavior is governed by a complex interaction between endocrine and genetic factors, with the prolactin (PRL) gene serving as a key regulator. The prolactin hormone encoded by the PRL gene stimulates broody behavior, temporarily suppresses egg production, and enhances the maternal instinct to remain on the nest. Genetic variation in the PRL gene polymorphism is associated with the differences in the intensity and frequency of brooding behavior between chicken breeds and local populations. Specific alleles of the PRL gene are associated with increased broodiness, while others are linked to reduced expression and weakened maternal behavior. Studies on Indonesian local chickens demonstrate a significant upregulation of PRL expression during the brooding phase, confirming its central role in the regulation of reproductive behavior. These findings suggest that the PRL gene holds strong potential as a molecular marker in genetic selection programs. Through marker-assisted selection, breeders can maintain strong broody traits for natural hatching or suppress them to enhance egg productivity. Therefore, a deeper understanding of the structure, function, and genetic variability of the PRL gene provides a crucial foundation for developing adaptive, efficient, and sustainable breeding programs for indigenous chickens.
Prinsip Dasar Pemuliaan Ternak Unggas Secara Konvensional: Tinjauan Literatur terhadap Seleksi, Sistem Perkawinan, dan Peningkatan Mutu Genetik Bilyaro, Woki; Nova Widyasari, Dhini; Rafian, Teguh
BIOSAPPHIRE: Jurnal Biologi dan Diversitas Vol 5 No 1 (2026): BIOSAPPHIRE
Publisher : Program Studi Biologi, Fakultas Sains dan Teknologi, UNIPAR JEMBER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31537/biosapphire.v5i1.3101

Abstract

Pemuliaan ternak unggas merupakan salah satu pendekatan utama dan komponen fundamental dalam peningkatan produktivitas dan efisiensi sistem produksi unggas. Meskipun teknologi berbasis genomik berkembang pesat, pendekatan pemuliaan konvensional tetap menjadi metode utama, khususnya pada sistem peternakan skala kecil dan pengembangan unggas lokal. Artikel ini bertujuan untuk melakukan tinjauan kritis terhadap prinsip dasar pemuliaan unggas secara konvensional, meliputi konsep genetika kuantitatif, metode seleksi, sistem perkawinan, serta peran recording dalam peningkatan mutu genetik. Metode yang digunakan adalah systematic literature review terhadap publikasi ilmiah periode 2015–2025 yang relevan dengan topik pemuliaan unggas. Hasil kajian menunjukkan bahwa seleksi berbasis performa fenotipik masih efektif dalam meningkatkan sifat produksi dengan nilai heritabilitas sedang hingga tinggi. Selain itu, sistem perkawinan seperti crossbreeding mampu menghasilkan efek heterosis yang signifikan terhadap performa pertumbuhan dan reproduksi. Keberhasilan program pemuliaan konvensional sangat bergantung pada kualitas pencatatan data dan integrasi faktor lingkungan. Disimpulkan bahwa pemuliaan konvensional tetap memiliki relevansi tinggi sebagai pendekatan adaptif, ekonomis, dan aplikatif dalam pengembangan industri perunggasan berkelanjutan. pemuliaan konvensional tetap menjadi fondasi penting dalam pengembangan genetik unggas, khususnya pada sistem peternakan rakyat
Co-Authors Arif Rahman Azis Chaniago, Rizky Amrullah Jonathan Anugrah Lase Maharani Dwipassa, Virna Marisa, Anggun Muhammad Dani Niken Ulupi Ramadhanti, Nurazizah Rita Mutia Rudi Afnan Teguh Rafian Woki Bilyaro