Effects of Campylobacter fetus on bull sperm quality

Cagnoli, Claudia Inés; Chiapparrone, María Laura; Cacciato, Claudio Santiago; Rodríguez, María Verónica; Aller, Juan F.; Catena, María del Carmen

doi:10.1016/j.micpath.2020.104486

Cited by 12 publications

(13 citation statements)

References 39 publications

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“…fetus ( Cff ) and C. fetus subsp. venerealis ( Cfv ), both of them are associated with the poor reproductive health of ruminants (Cagnoli et al., 2020 ). Generally, C. fetus subspecies venerealis ( Cfv ) is reported to be the causative agent of venereal diseases of cattle, for example, bovine genital campylobacteriosis (BGC), while the bacterial infection eventually lead to lowered reproductive performance (repeat breeders), due to more commonly premature embryonic death (World Organization for Animal Health, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Campylobacter fetus in breeding bulls of private farms in Bangladesh

Hoque

Islam

Saddam

et al. 2022

Veterinary Medicine & Sci

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Background Bovine genital campylobacteriosis (BGC) is a venereal disease caused by Campylobacter fetus that has a negative impact on animal reproduction. The bull is considered to be a symptomless carrier that spreads the disease agent to breeding cows, causing infertility and sporadic abortion. Aim The study aims to estimate the prevalence, identify risk factors of Campylobacter fetus ( C. fetus ) infection and antimicrobial resistance pattern of the C. fetus isolates. Method A cross‐sectional survey was conducted in Mymensingh district of Bangladesh. Bull smegma samples (single sample from each bull) were collected from 300 bulls from four farms and tested via culture, biochemical identification and finally 16S rRNA and cdtA gene‐based molecular assays (PCR) for herd and animal‐level prevalence estimation. Herd‐ and animal‐level data on risk factors were collected from the farmers using a pretested questionnaire and analysed by univariable and multivariable logistic regression models with a p value of <0.05 was taken statistically significant for both analyses. Results Among the surveyed farms, 75% (95% CI: 19.4%–99.4%) were confirmed to have bulls infected with Campylobacter fetus at herd level. However, animal‐level occurrence of C. fetus was estimated to be 8.7% (26/300) (95% CI: 5.7%–12.4%). Natural service increases the odds of campylobacteriosis 38.18 times (95% CI: 13.89–104.94) in comparison to artificial insemination for C . fetus infection in bulls. Significantly, half of the isolates (50%, n = 13) were identified to be multidrug resistant (MDR) for three to five antimicrobial agents. Conclusion This study highlights the need to develop official guidelines for C. fetus control and prevention in Bangladesh including mandatory artificial insemination in reproductive cows and heifers, routine screening of breeding bulls for C. fetus free status.

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Section: Introductionmentioning

confidence: 99%

“…fetus (Cff) and C. fetus subsp. venerealis (Cfv), both of them are associated with the poor reproductive health of ruminants (Cagnoli et al, 2020). Generally, C.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Campylobacter fetus in breeding bulls of private farms in Bangladesh

Hoque

Islam

Saddam

et al. 2022

Veterinary Medicine & Sci

View full text Add to dashboard Cite

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“… 23.7 Yes bacteria (gram-negative) Campylobacter fetus 23.7 Yes** bacteria (gram-negative) Campylobacter fetus subp. fetus In experimental work, the bacteria is able to irreversibly bind to bull spermatozoa and negatively affect sperm quality, altering the structure and functionality of the sperm plasma membrane ( Cagnoli et al., 2020 ). * 10.5 Yes bacteria (gram-negative) Campylobacter fetus subp.…”

Section: Resultsmentioning

confidence: 99%

What about the bull? A systematic review about the role of males in bovine infectious infertility within cattle herds

Polo

García‐Seco

Díez-Guerrier

et al. 2023

Veterinary and Animal Science

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“…Therefore, it may be missed when culturing under conventional microbiological conditions. Cagnoli et al [11] described a significant negative influence of both Campylobacter fetus veneralis and Campylobacter fetus fetus bacteria species on bull semen quality parameters.…”

Section: Discussionmentioning

confidence: 99%

“…However, bacteria can have a direct negative affect on sperm quality, depending on the species and number. Negative correlations were reported between certain bacteria and sperm motility [10], viability, membrane integrity and acrosome reaction [11], sperm DNA fragmentation rates [12,13] and the total number of spermatozoa [14,15]. Givens and Marley [16] reported the presence of microorganisms that cause infertility and/or are transmitted via semen.…”

Section: Introductionmentioning

confidence: 99%

Identification of Bull Semen Microbiome by 16S Sequencing and Possible Relationships with Fertility

et al. 2021

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Reports on the use of 16S sequencing for the identification of bacteria in healthy animals are lacking. Bacterial contamination of bull semen can have a negative effect on the sperm quality. The aims of this study were threefold: to identify bacteria in the semen of healthy bulls using 16S sequencing; to investigate the differences in the bacterial community between individual bulls; and to establish if there was a relationship between the bacteria isolated and bull fertility. Semen from 18 bulls of known fertility was used for the DNA extraction and 16S sequencing; 107 bacterial genera were identified. The differences in the amplicon sequence variants (ASVs) and the numbers of genera between bulls were noted. Negative correlations (p < 0.05) between several bacterial genera with Curvibacter, Rikenellaceae RC9-gut-group and Dyella spp. were seen. Other negatively correlated bacteria were Cutibacterium, Ruminococcaceae UCG-005, Ruminococcaceae UCG-010 and Staphylococcus, all within the top 20 genera. Two genera, W5053 and Lawsonella, were enriched in bulls of low fertility; this is the first time that these bacteria have been reported in bull semen samples. The majority of the bacteria were environmental organisms or were species originating from the mucous membranes of animals and humans. The results of this study indicate that differences in the seminal microbiota of healthy bulls occur and might be correlated with fertility.

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Effects of Campylobacter fetus on bull sperm quality

Cited by 12 publications

References 39 publications

Investigation of Campylobacter fetus in breeding bulls of private farms in Bangladesh

Investigation of Campylobacter fetus in breeding bulls of private farms in Bangladesh

What about the bull? A systematic review about the role of males in bovine infectious infertility within cattle herds

Identification of Bull Semen Microbiome by 16S Sequencing and Possible Relationships with Fertility

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