Volume 20, Issue 2 (2025) | American Journal of Animal and Veterinary Sciences

Isolation and Characterization of Collagen from IndonesiaLocal Duck Feet Using Bromelain Enzyme

Rafika Mila Amanah — 2025-05-24

American Journal of Animal and Veterinary Sciences, Published online: 24 May 2025; doi:10.3844/ajavsp.2025.97.102

The utilization of local duck feet as a collagen source to minimizewaste and add value to the duck by-product. This research aimed to isolate andcharacterize collagen from Local duck feet using enzyma...

Production and Reproduction of Primiparous Guinea Pigs Concerning Lysine Levels

Yasmeen Camila Vargas-Jauja — 2025-05-28

American Journal of Animal and Veterinary Sciences, Published online: 28 May 2025; doi:10.3844/ajavsp.2025.103.111

The development of breeding animals is essential to ensure the productivity of guinea pigs, so an adequate supply of nutrients is required. However, information on their nutritional requirements is li...

Semen Quality and Artificial Insemination Efficacy Using Sericin-Silica-Phosphate-CuO Hydrogel in Thin-tailed Sheep

Enike Dwi Kusumawati — 2025-06-10

American Journal of Animal and Veterinary Sciences, Published online: 10 June 2025; doi:10.3844/ajavsp.2025.112.123

Artificial Insemination (AI) in livestock is increasingly demanded because it greatly affects the productivity and quality of livestock. AI should be supported by advanced material chemistry, especial...

Cattle Breeding Programs and Trait Preferences in Ethiopia

Mohammed Endris Seid — 2025-06-09

American Journal of Animal and Veterinary Sciences, Published online: 9 June 2025; doi:10.3844/ajavsp.2025.124.132

The success of livestock breeding programs depend on the active involvement of smallholder farmers, pastoralists, and agro-pastoralists in shaping breeding objectives and identifying key trait prefere...

Meta-Analysis of Bacillus in Laying Hen Nutrition: Feed Intake, Feed Conversion Ratio and Egg Productive Indices

Christian Anayo Mbajiorgu — 2025-06-17

American Journal of Animal and Veterinary Sciences, Published online: 17 June 2025; doi:10.3844/ajavsp.2025.133.143

This data synthesis study aimed to explore the impact of bacillus additive on performance of laying hens. Three bibliographic databases were scanned, with no restrictions on language and date. The inc...

Evaluating the Impact of Indonesian Herbal Mixture on Recovery and Performance of Bali Cattle After Long-Distance Transportation

Sri Arnita Abu Tani — 2025-06-25

American Journal of Animal and Veterinary Sciences, Published online: 25 June 2025; doi:10.3844/ajavsp.2025.145.152

Cattle traveling for an extended period on the road are often experience a decrease in body weight between 10 and 20%. This decrease causes significant losses for farmers, showing the importance of im...

Prediction of Body Weight from Linear Body Measurements in Sheep: A Systematic Review

Mathemba Kwezi Molosi — 2025-07-05

American Journal of Animal and Veterinary Sciences, Published online: 5 July 2025; doi:10.3844/ajavsp.2025.153.158

The aim of the study was to systematically review the literature on the prediction of the body weight from linear body measurement traits in sheep using four databases: Google Scholar, PubMed, Science...

Economic Feasibility and Growth Performance of Holstein Friesian Calves Fed Whey-Dangke Fortified Green Calf Starter

Zyahrul Ramadan — 2025-07-09

American Journal of Animal and Veterinary Sciences, Published online: 9 July 2025; doi:10.3844/ajavsp.2025.159.170

This research evaluated the impact of feeding green calf starter fortified with whey-dangke on Holstein Friesian dairy calves' economic feasibility, growth performance, and health parameters. Experime...

Critical Amino Acid and Energy Balancing to Address MaizeGrade Variation in Broiler Performance

Md. Shahidur Rahman — 2025-07-10

American Journal of Animal and Veterinary Sciences, Published online: 10 July 2025; doi:10.3844/ajavsp.2025.171.179

This study aimed to evaluate the effects of maize grade variationin broiler performance. A total of 189 Cobb 500 broilers were randomly andevenly assigned to three dietary treatments having three repl...

Rumen Microbiota Mysteries: Nutrition, Function, and its Impact on Livestock Productivity

Hamdi Mayulu — 2025-08-04

American Journal of Animal and Veterinary Sciences, Published online: 4 August 2025; doi:10.3844/ajavsp.2025.180.191

Ruminants are important herbivores in the global food system, serving as primary producers of meat and milk. The productivity of these animals is influenced by the functionality of their digestive org...

Effect of Leucaena leucocephala Protein Supplement on Nutrient Intake, Milk Yield and Quality, Hematology, Metabolites and Economy Efficiency in Etawah Crossbreed Goats

Idat Galih Permana — 2025-08-23

American Journal of Animal and Veterinary Sciences, Published online: 23 August 2025; doi:10.3844/ajavsp.2025.192.203

Legumes, such as Leucaena leucocephala (LL), have high protein and Rumen degradable Protein (RUP) content, so adding legumes to the diet of dairy goats can meet the protein requirements for milk synth...

Bibliometric Research on Goat Ticks: A Global Analysis from 1990 - 2024

Emrobowansan Monday Idamokoro — 2025-08-22

American Journal of Animal and Veterinary Sciences, Published online: 22 August 2025; doi:10.3844/ajavsp.2025.204.215

This study illustrates the results trends of academic literatures in line with goat ticks globally. An aggregate of 1204 documents was Web of Science (WOS) data archive for evaluation utilizing biblio...

Intensification of Mare's Milk Production at Designed Kumiss Farms

Khamit Ablgazinovich Aubakirov — 2025-08-26

American Journal of Animal and Veterinary Sciences, Published online: 26 August 2025; doi:10.3844/ajavsp.2025.216.221

The aim of this research was to study the global experience in designing kumiss farms and to evaluate the influence of machine and manual milking on the quantitative and qualitative composition of mar...

Brucellosis Management in Dairy Cattle Farms: Reviewing Programs and Addressing Challenges in Iranian Dairy Cattle Farms

Maryam Dadar — 2025-08-25

American Journal of Animal and Veterinary Sciences, Published online: 25 August 2025; doi:10.3844/ajavsp.2025.222.233

Brucellosis, a zoonotic infection caused by Brucella species, remains a significant public health issue, affecting both animal and human health and the economy globally. This review focuses on brucell...