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Isolation of Pathogenic Bacteria Causing Clinical Mastitis and Their Susceptibility to Commercial Antibiotics in Dairy Cows Hassan Ishag Hassan Haren; Eka Handayanta; Ihsan Hilmi; Muhammad Evan Magistrama
Journal of Sustainable Livestock Vol. 2 No. 1 (2026): Journal of Sustainable Livestock
Publisher : Faculty of Animal Husbandry, Wijayakusuma Purwokerto University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63859/jsl.v2i1.29

Abstract

Clinical mastitis in dairy cattle poses severe economic and health challenges globally, exacerbated by rising antimicrobial resistance (AMR). This systematic review and meta-analysis evaluated the prevalence of mastitis-causing pathogens and their antibiotic resistance profiles from 2010 to 2023. Following PRISMA guidelines, 45 eligible studies were analyzed using a random-effects model. The pooled estimates revealed that Gram-positive bacteria are the primary causative agents, predominantly Staphylococcus intermedius (42.30%) and Staphylococcus aureus (32.97%). Analysis of resistance proportions demonstrated alarming rates against commonly used commercial antibiotics, notably Penicillin (45.2%) and Ampicillin (40.5%). Crucially, methicillin-resistant S. intermedius strains exhibited absolute resistance (100%) to oxacillin and cefoxitin. High inter-study heterogeneity (I² > 75%) was observed, with meta-regression confirming a statistically significant temporal increase in resistance over the past decade. These findings underscore the critical threat of AMR in the dairy sector. The study concludes that there is an urgent necessity for implementing standardized diagnostic procedures, continuous molecular surveillance, and rigorous, evidence-based localized antibiotic stewardship policies to mitigate the spread of resistant pathogens and ensure sustainable dairy production.
Ruminant Livestock Production in Sudan: Systems, Genetic Resources, and Pathways to Sustainability under Climate and Conflict Stress: Ruminant Livestock Production in Sudan Hassan Ishag Hassan Haren; Tasnim Hunin AbdElwhab Mohamed; Ihsan Hilmi
Journal of Sustainable Livestock Vol. 2 No. 2 (2026): Journal of Sustainable Livestock
Publisher : Faculty of Animal Husbandry, Wijayakusuma Purwokerto University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63859/jsl.v2i2.38

Abstract

Sudan has one of Africa's largest ruminant livestock populations, at around 105–110 million head of cattle, sheep, goats, and camels (circa 2020–2021), which underpin rural livelihoods, food security, and foreign-exchange earnings. This structured narrative review synthesizes current knowledge on Sudanese ruminant production across agro-ecological zones, integrating production systems, indigenous genetic resources, productivity and reproduction, disease burden, dairy and meat value chains, and the export economy, alongside the compounding effects of climate variability and the armed conflict that began in April 2023. Peer-reviewed literature and official statistics, mainly 2005–2026, were retrieved from international databases and analyzed thematically, with quantitative figures triangulated across independent sources and residual discrepancies reported as ranges. Ruminants contribute roughly one-third of agricultural gross domestic product, yet productivity remains low because of seasonal feed deficits, water scarcity, a heavy disease burden, weak veterinary and market infrastructure, largely undocumented crossbreeding, and unreliable population data. Indigenous Kenana and Butana cattle, Sudan Desert sheep, Desert and Nubian goats, and dromedary camels are valuable, climate-adapted genetic resources that remain under-exploited and increasingly at risk. The conflict sharply curtailed total livestock exports fell from about 4.77 million head worth US$830.6 million in 2024 to roughly 3.91 million head worth US$468.3 million in 2025 — and damaged slaughter capacity. We show how climate and conflict compound through shared mechanisms, and identify community-based breeding, improved feeding and animal-health systems, rangeland management, value-adding processing and traceability, climate adaptation framed around emission intensity, and reliable data and coherent policy as priorities for a resilient, sustainable ruminant sector.