Open Access
Research (Published online: 04-07-2023)
2. Prevalence of mastitis in dairy animals in Indonesia: A systematic review and meta-analysis
Dian Meididewi Nuraini, Morsid Andityas, Peerapol Sukon, and Patchara Phuektes
Veterinary World, 16(7): 1380-1389

Dian Meididewi Nuraini: Veterinary Science Program, Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, Thailand; Department of Animal Science, Faculty of Animal Science, Universitas Sebelas Maret, Surakarta, Indonesia.
Morsid Andityas: Veterinary Science Program, Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, Thailand; Veterinary Technology Study Program, Department of Bioresources Technology and Veterinary, Vocational College, Universitas Gadjah Mada, Yogyakarta, Indonesia.
Peerapol Sukon: Veterinary Science Program, Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, Thailand; Research Program on Toxic Substances, Microorganisms and Feed Additives in Livestock and Aquatic Animals for Food Safety, Khon Kaen University, Khon Kaen, Thailand.
Patchara Phuektes: Veterinary Science Program, Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, Thailand.

doi: 10.14202/vetworld.2023.1380-1389

Article history: Received: 20-02-2023, Accepted: 01-06-2023, Published online: 04-07-2023

Corresponding author: Peerapol Sukon

E-mail: sukonp@kku.ac.th

Citation: Nuraini DM, Andityas M, Sukon P, and Phuektes P (2023) Prevalence of mastitis in dairy animals in Indonesia: A systematic review and meta-analysis, Veterinary World, 16(7): 1380-1389.
Abstract

Background and Aim: Mastitis is an important disease that can reduce milk production and farmer income as well as negatively affect human health. This study aimed to summarize dairy mastitis in Indonesia, both subclinical mastitis (SCM) and clinical mastitis (CM), and its prevalence in different provinces, the diagnostic methods, and the animal species.

Materials and Methods: Relevant studies on mastitis in dairy animals in Indonesia were obtained from PubMed, Scopus, ProQuest, Google Scholar, and Garuda. The title and abstract were screened for the eligibility of the studies. The full text of the selected studies was assessed and the data were extracted for analysis. To determine the pooled estimate of the prevalence of mastitis, a random-effects model was performed using the “Meta” and “Metaphor” packages in the R software version 4.2.2. The heterogeneity of several characteristics (mastitis type, provinces, animal species, and diagnostic methods) was evaluated through subgroup meta-analysis. Meta-regression analysis was conducted to assess the trend of mastitis prevalence reports over time. Publication bias was evaluated using Egger’s test and a funnel plot.

Results: A total of 735 studies were retrieved for the title and abstract screening, which resulted in the final selection of 37 studies with a total of 6050 samples for meta-analysis. The pooled estimate of mastitis prevalence in dairy animals in Indonesia was 59.44% (95% confidence interval [CI], 52.39%–66.49%). Based on mastitis type, SCM had a significantly higher prevalence than CM (58.24% [95% CI, 51.26%–65.23%] vs. 3.31% [95% CI, 1.42%–5.19%]). No significant difference was observed in the analysis of other subgroups. Among provinces, Central Java had the highest prevalence (66.62% [95% CI, 49.37%–83.87%]), whereas Yogyakarta had the lowest (41.77% [95% CI, 14.96%–68.58%]). Based on animal species, cow and goat had a prevalence of 63.42% (95% CI, 55.97%–70.86%) and 44.96% (95% CI, 28.26%–61.66%), respectively. Based on the diagnostic method, the California mastitis test resulted in 60.08% (95% CI, 52.11%–68.06%) and the Institut Pertanian Bogor test, 56.00% (95% CI, 41.20%–70.81%). No significant change in the prevalence of mastitis in Indonesia was observed from 2003 to 2022.

Conclusion: This study demonstrates that the pooled estimate of mastitis prevalence in dairy animals in Indonesia is >50%. Based on subgroup analysis, SCM had a higher prevalence than CM; however, the prevalence between provinces, detection methods, and animal species in the 2003–2022 periods was not significantly different. A mastitis control strategy needs to be developed to reduce the prevalence of mastitis and further loss in milk production.

Keywords: animals, cow, Indonesia, subclinical mastitis.