Evidence: Guinea pig (Cavia porcellus) husbandry, health & nutrition
Source: Europe PMC (Europe PubMed Central) REST search — first-hand peer-reviewed abstract records, pulled 2026-08-01. Queries covered husbandry, health/disease/parasitology, and nutrition/feeding for Cavia porcellus. The cluster returns 4 representative studies with abstracts below. Abstract text is verbatim from source; each study is traceable by PMID.
Studies
- PMID 42071946 (2026, Animals : an open access journal from MDPI) — Occurrence and Genetic Diversity of <i>Cryptosporidium</i> spp. in Pet Rodents from Yunnan, China: Identification of Zoonotic Subtypes in Hamsters.. Abstract (opening): <i>Cryptosporidium</i> spp. are common protist pathogens, and the growing popularity of pet rodents raises concerns about their potential role in zoonotic parasites transmission. However, epidemiological data on <i>Cryptosporidium</i> spp. in pet rodents in Yunnan Province is scarce. To examine the occurrence of <i>Cryptosporidium</i> spp. in pet rodents in Yunnan, we collected 762 fecal samples from four rodent species across four cities. Nested PCR and DNA sequencing were used to characterize the species and subtypes of <i>Cryptosporidium</i>. The occurrence of <i>Cryptosporidium</i> spp. in guinea pigs (<i>Cavia porcellus</i>), Siberian dwarf hamsters (<i>Phodopus sungorus</i>), Syrian hamsters (<i>Mesocricetus auratus</i>) and fancy rats (<i>Rattus norvegicus domestica</i>) was 18.7% (80/426), 17.3% (36/207), 12.5% (15/120), 0% (0/9), respectively, with an overall rate of 17.2% (131/762). According to regions, the positivity rate of <i>Cryptosporidium</i> spp. in Zhaotong city, Kunming city, Yuxi city and Qujing city was 21.0%, 17.9%, 16.8% and 10.5%, respectively. In terms of sampling location, the occurrence of <i>Cryptosporidium</i> spp. in pet markets, farms and shops was 19.5%, 18.6% and 0%, respectively. Sequence analysis of the small subunit ribosomal RNA (<i>SSU</i> rRNA) gene identified six <i>Cryptosporidium</i> species/genotypes: <i>Cryptosporidium homai</i> (<i>n</i> = 52), <i>Cryptosporidium wrairi</i> (<i>n</i> = 30), <i>Cryptosporidium</i> sp. hamster genotype (<i>n</i> = 25), <i>Cryptosporidium andersoni</i> (<i>n</i> = 20), <i>Cryptosporidium parvum</i> (<i>n</i> = 5), and <i>Cryptosporidium muris</i> (<i>n</i> = 1). Further subtyping of <i>C. andersoni</i> isolates using multilocus sequence typing (MLST) revealed a single subtype, with all isolates identified as A3A4A2A2. All five <i>C. parvum</i> isolates were identified as subtype IIdA15G1 based on the <i>gp60</i> gene. Our findings demonstrated the presence of the zoonotic <i>C. parvum</i> IIdA15G1 subtype in pet rodents, suggesting that these animals, particularly hamsters, may serve as reservoirs for human-pathogenic <i>Cryptosporidium</i> species. These results underscore the need for improved biosecurity and husbandry practices in the pet rodent trade to mitigate public health risks. *[CC BY — Open Access, verbatim with attribution.]*
Source: https://pubmed.ncbi.nlm.nih.gov/42071946/
- PMID 41630840 (2026, One health (Amsterdam, Netherlands)) — Molecular detection of zoonotic RNA viruses in guinea pigs (<i>Cavia porcellus</i>) from small-scale family farming in the region of Cusco, Peru.. Abstract (opening): Emerging zoonotic diseases are frequently associated with close human-animal interactions in small-scale farming systems. Guinea pigs (<i>Cavia porcellus</i>) are widely raised for food in the Andean region, often under poor sanitary conditions; however, little is known about their role as reservoirs of enteric viruses with zoonotic potential. This study aimed to detect zoonotic RNA viruses in intestinal samples from guinea pigs raised on small-scale family farms in the Cusco region of Peru. A total of 34 intestinal tissue samples from adult guinea pigs showing gastrointestinal lesions were analyzed by reverse transcription polymerase chain reaction (RT-PCR) and nested PCR for the molecular detection of Coronavirus (CoV), Rotavirus A (RVA), <i>Mammalian orthoreovirus</i> (MRV), and Kobuvirus (KoV). Positive amplicons were sequenced and analyzed phylogenetically to confirm the PCR assays. Overall, 91.18% (31/34) of samples tested positive for at least one virus. RVA was the most frequently detected (58.82%), followed by CoV (29.41%), MRV (23.53%), and KoV (23.53%). Single-virus infections accounted for 20 cases and co-infections were identified in 11 cases. RVA was the most frequently detected, both in single (<i>n</i> = 9) and co-infections (<i>n</i> = 11). KoV detection was predominantly associated with co-infections rather than single infections. These findings provide the first molecular evidence of multiple zoonotic RNA viruses in guinea pigs from small-scale farming in Peru, highlighting their potential role as reservoirs in zoonotic transmission cycles. Enhanced surveillance and improved farm-level biosecurity are essential to mitigate risks of viral emergence in these traditional farming systems. *[CC BY — Open Access, verbatim with attribution.]*
Source: https://pubmed.ncbi.nlm.nih.gov/41630840/
- PMID 42023055 (2026, Applied sciences (Basel, Switzerland)) — Hexavalent Chromium Oropharyngeal Aspiration Induced Behavior Effects and Essential Metal Dyshomeostasis in Young Hartley Guinea Pigs.. Abstract (opening): Hexavalent chromium [Cr(VI)] is the toxic form of chromium often used in industry for its hardness, bright colors, and anticorrosive properties. Cr(VI) is a known human lung carcinogen, making its inhalation an occupational hazard. Growing evidence emphasizes the neurotoxic potential of Cr(VI), though it is not linked to brain cancers. Few studies consider neurotoxicity in chromate workers, reporting impaired olfactory discrimination and an increased risk of death from mental health disorders. A major factor limiting translation of most rodent Cr(VI) studies to human populations has to do with vitamin C, which can reduce the toxic Cr(VI) to non-toxic Cr(III). Rats and mice synthesize vitamin C and are likely more resistant to Cr(VI) than humans. Here, we considered Cr(VI) neurotoxicity in guinea pigs (<i>Cavia porcellus</i>), which do not endogenously synthesize vitamin C. We exposed Hartley guinea pigs (both sexes) to occupationally relevant concentrations of Cr(VI) via oropharyngeal aspiration weekly for 90 days. We observed behavioral effects in the open field assay, elevated plus maze, Y-maze, and novel object recognition test during weeks 9-12 of exposure. After euthanasia, we assessed Cr accumulation and essential metal dyshomeostasis in the hippocampus. We observed significantly increased hippocampal Cr accumulation in females, while males exhibited essential metal dyshomeostasis. *[CC BY — Open Access, verbatim with attribution.]*
Source: https://pubmed.ncbi.nlm.nih.gov/42023055/
- PMID 42435424 (2026, Advanced science (Weinheim, Baden-Wurttemberg, Germany)) — *[Paraphrased derived summary — non-Open-Access source.]* In a Dunkin Hartley guinea pig model of spontaneous osteoarthritis, stromal vascular fraction (SVF) and CD31-enriched SVF both reduced cartilage fibronectin and COL1A1, raised aggrecan, suppressed MMP-13, and lowered TNF-alpha and MCP-1; CD31 enrichment gave greater and more consistent improvements in subchondral and trabecular bone integrity. The findings support testing CD31-enriched SVF as a refined cell therapy with potential disease-modifying effects in OA.
Source: https://pubmed.ncbi.nlm.nih.gov/42435424/
Source text: pdf-raw/evidence/europepmc_guinea_pig_husbandry_health_2026-08-01.txt (Europe PMC first-hand abstracts, pulled 2026-08-01).
License & attribution
Mixed licensing per COPYRIGHT_POLICY §3: Open Access (CC BY / CC BY-NC / CC BY-NC-ND) studies are reproduced verbatim with attribution under their specific CC license; non-Open-Access studies are paraphrased as derived fact summaries (numbers and proper nouns preserved, sentences rewritten). Original records:
- https://pubmed.ncbi.nlm.nih.gov/42430075/
- https://pubmed.ncbi.nlm.nih.gov/42076742/
- https://pubmed.ncbi.nlm.nih.gov/42071946/
- https://pubmed.ncbi.nlm.nih.gov/41630840/
- https://pubmed.ncbi.nlm.nih.gov/41902252/
- https://pubmed.ncbi.nlm.nih.gov/42023055/
- https://pubmed.ncbi.nlm.nih.gov/41759941/
- https://pubmed.ncbi.nlm.nih.gov/41600618/
- https://pubmed.ncbi.nlm.nih.gov/42435424/
Cleaning removal log (2026-08-05, codebuddy)
PMID 42212719 — rule2: Dromedary CAMEL thyroid histochemistry; different species PMID 42325572 — rule2: skylight navigation regulatory evolution in Drosophila/insects; different species PMID 41837629 — not-target: Mycobacterium tuberculosis as a model system (human TB); no guinea pig PMID 42430075 — farm-production study (71 guinea-pig meat farms, Colombia), not pet husbandry (removed 2026-08-24, kimi) PMID 42076742 — mis-clustered duplicate — kept in evidence_exotic_guinea_pig_clinical (removed 2026-08-24, kimi) PMID 41902252 — lab-model review (swine influenza animal models), not pet husbandry (removed 2026-08-24, kimi) PMID 41759941 — laboratory-animal study (buprenorphine/capromorelin dosing, 48 research guinea pigs), not pet husbandry (removed 2026-08-24, kimi) PMID 41600618 — lab sensitization assay (sublancin, guinea pigs/rabbits), not pet husbandry (removed 2026-08-24, kimi)