ArticleJDS communications2022
The effect of bovine leukemia virus on dairy cow longevity.
Article in JDS communications, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
10 citing papers in PubMed, 14 citations in OpenAlex.
- Bovine Leukemia Virus as a One Health Challenge in Nutrition, Food Security, and Public Health: A Narrative Review.The Journal of nutrition · 2026Review
- Distribution and influence of single-nucleotide polymorphisms affecting bovine leukemia virus proviral load in semen and progeny derived from semen in Japanese Black cattle.The Journal of veterinary medical science · 2026Article
- First Identification ofPathogens (Basel, Switzerland) · 2025Article
- Evaluation of PD-L1 and TIM-3 Pathways in T Cells During Experimental Bovine Leukemia Virus Infection in Sheep.Veterinary sciences · 2025Article
- Polymorphism ofPathogens (Basel, Switzerland) · 2025Article
- BLV-CoCoMo Dual qPCR Assay Targeting LTR Region for Quantifying Bovine Leukemia Virus: Comparison with Multiplex Real-Time qPCR Assay TargetingPathogens (Basel, Switzerland) · 2024Article
- CRISPR-Cas13a-Based Lateral Flow Assay for Detection of Bovine Leukemia Virus.Animals : an open access journal from MDPI · 2024Article
- Molecular frequency of bovine leukemia virus in Creole cattle of Eastern Colombia.Veterinary and animal science · 2024Article
- BLV-miR-B1-5p PromotesAnimals : an open access journal from MDPI · 2023Article
- Assessment of Natural Transmission of Bovine Leukemia Virus in Dairies from Southern Chile.Animals : an open access journal from MDPI · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Bovine leukemia virus (BLV) is a retrovirus of cattle that infects approximately 45% of all US dairy cattle, with about 90% of US dairy herds having at least one infected animal. Studies have found BLV infection to be associated with multiple measures of decreased immune function, which may explain the observed economic losses from milk production, decreased cow longevity, and predisposition to lymphoma and other diseases. Our objective was to measure the association between BLV infection and cow longevity in dairy cow operations. Ninety-one dairy herds from 9 US states volunteered to participate in this study. Milking dairy cows (n = 3,611) were tested for BLV antibodies using an ELISA milk test, and their presence in the herd was monitored for an average of 29 mo. The survival analysis controlled for herd and lactation number. Cows sold for dairy purposes were excluded, and individual cow results were not shared with producers so as not to influence culling decisions. Overall, 47.1% (1,701/3,611) of cows were BLV-positive by ELISA. The significant hazard ratio of 1.30 indicated that positive cows were 30% more likely than their negative herdmates to die or be culled during the monitoring period. These results are consistent with other studies in finding a negative effect of BLV infection on cow lifespan.
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.