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41 results

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Page 1
Genomic characterization of antimicrobial resistance and mobile genetic elements in swine gut bacteria isolated from a Canadian research farm.
Rahman N, McCullough T, Orozco DF, Walkowiak S, Farzan A, Shekarriz S, Surette MG, Cicek N, Derakhshani H. Rahman N, et al. Among authors: farzan a. Anim Microbiome. 2025 Jun 18;7(1):66. doi: 10.1186/s42523-025-00432-w. Anim Microbiome. 2025. PMID: 40533851 Free PMC article.
RESULTS: We generated a biobank of bacteria from different sections of the gastrointestinal tracts of four clinically healthy pigs housed at a research farm in Ontario, Canada. The culturing was performed under anaerobic conditions using both selective and general enrichme …
RESULTS: We generated a biobank of bacteria from different sections of the gastrointestinal tracts of four clinically healthy pigs ho …
Progression of swine fecal microbiota during early stages of life and its association with performance: a longitudinal study.
Arsenault M, Lillie B, Nadeem K, Khafipour E, Farzan A. Arsenault M, et al. Among authors: farzan a. BMC Microbiol. 2024 May 25;24(1):182. doi: 10.1186/s12866-024-03336-y. BMC Microbiol. 2024. PMID: 38789948 Free PMC article.
Fecal samples were collected from nine cohorts of 40 pigs (n = 360) from distinct farrowing sources in Ontario and Quebec, Canada at four timepoints from birth to one-week post-weaning, with pig body weight was recorded at each fecal sampling. ...CONCLUSION: These findings …
Fecal samples were collected from nine cohorts of 40 pigs (n = 360) from distinct farrowing sources in Ontario and Quebec, Canada at …
An investigation into fecal shedding of Streptococcus suis serotypes in nursery pigs.
Del Rocio Amezcua M, Friendship RM, Farzan A. Del Rocio Amezcua M, et al. Among authors: farzan a. Can Vet J. 2024 Jan;65(1):75-78. Can Vet J. 2024. PMID: 38164374 Free PMC article.
Rectal swabs from 297 pigs were tested and S. suis serotypes 15 (n = 7), 31 (n = 3), or untypeable (n = 6) isolates were recovered from 16 (5.4%) pigs. ...The coincidence of untypeable isolates in feces from healthy pigs and their isolation from meninges of …
Rectal swabs from 297 pigs were tested and S. suis serotypes 15 (n = 7), 31 (n = 3), or untypeable (n = 6) isolates were recovered fr …
Investigations into the effects of Escherichia coli vaccination and diet composition on post-weaning diarrhea and growth performance in pigs.
Goodman MR, Amezcua MR, Friendship RM, Farzan A. Goodman MR, et al. Among authors: farzan a. Can Vet J. 2023 Apr;64(4):329-336. Can Vet J. 2023. PMID: 37008641 Free PMC article.
OBJECTIVES: Pigs often experience slow growth and enteric disease problems during the early post-weaning period. ...Pigs fed a 4-phase program that transitioned from a diet containing a relatively high proportion of animal-based protein to a feed consisting of plant …
OBJECTIVES: Pigs often experience slow growth and enteric disease problems during the early post-weaning period. ...Pigs fed a …
Compositional analysis of the tonsil microbiota in relationship to Streptococcus suis disease in nursery pigs in Ontario.
Niazy M, Hill S, Nadeem K, Ricker N, Farzan A. Niazy M, et al. Among authors: farzan a. Anim Microbiome. 2022 Jan 21;4(1):10. doi: 10.1186/s42523-022-00162-3. Anim Microbiome. 2022. PMID: 35063043 Free PMC article.
BACKGROUND: The tonsil of the soft palate in pigs is the colonization site of both commensal and pathogenic microbial agents. Streptococcus suis infections are a significant economic problem in the swine industry. ...The purpose of this study was to identify whether …
BACKGROUND: The tonsil of the soft palate in pigs is the colonization site of both commensal and pathogenic microbial agents. Strepto …
Serotypes, Virulence-Associated Factors, and Antimicrobial Resistance of Streptococcus suis Isolates Recovered From Sick and Healthy Pigs Determined by Whole-Genome Sequencing.
Aradanas M, Poljak Z, Fittipaldi N, Ricker N, Farzan A. Aradanas M, et al. Among authors: farzan a. Front Vet Sci. 2021 Nov 2;8:742345. doi: 10.3389/fvets.2021.742345. eCollection 2021. Front Vet Sci. 2021. PMID: 34796225 Free PMC article.
Streptococcus suis is ubiquitous in swine, and yet, only a small percentage of pigs become clinically ill. The objective of this study was to describe the distribution of serotypes, virulence-associated factor (VAF), and antimicrobial resistance (AMR) genes in S. su …
Streptococcus suis is ubiquitous in swine, and yet, only a small percentage of pigs become clinically ill. The objective of th …
Study of the relationship between untypable and typable isolates of Streptococcus suis recovered from clinically ill and healthy nursery pigs.
Denich L, Farzan A, Friendship R, Arndt E, Ricker N, Gottschalk M, Poljak Z. Denich L, et al. Among authors: farzan a. Vet Microbiol. 2021 Jun;257:109064. doi: 10.1016/j.vetmic.2021.109064. Epub 2021 Apr 8. Vet Microbiol. 2021. PMID: 33892450
Streptococcus suis naturally colonizes the upper respiratory tract of pigs and can lead to severe disease conditions. Although there are several serotypes associated with disease, untypable isolates have also been observed. The objective of this study was to investigate th …
Streptococcus suis naturally colonizes the upper respiratory tract of pigs and can lead to severe disease conditions. Although there …
Antibody responses to porcine reproductive and respiratory syndrome virus, influenza A virus, and Mycoplasma hyopneumoniae from weaning to the end of the finisher stage in fourteen groups of pigs in Ontario, Canada.
Raaphorst E, Farzan A, Friendship RM, Lillie BN. Raaphorst E, et al. Among authors: farzan a. BMC Vet Res. 2021 Feb 17;17(1):82. doi: 10.1186/s12917-021-02756-6. BMC Vet Res. 2021. PMID: 33596907 Free PMC article.

RESULTS: Overall, older pigs were more likely to test seropositive for PRRSV and less likely to test seropositive for M. hyopneumoniae (p < 0.001). ...Pigs that were seropositive for IAV were more likely to test seropositive for both PRRSV and M. hyopneumoniae (p

…
RESULTS: Overall, older pigs were more likely to test seropositive for PRRSV and less likely to test seropositive for M. hyopneumonia …
The relationship between hemoglobin levels at weaning and growth performance and antibody response in nursery pigs.
Seip V, Friendship R, Amezcua R, Farzan A. Seip V, et al. Among authors: farzan a. Can Vet J. 2020 Nov;61(11):1170-1174. Can Vet J. 2020. PMID: 33149354 Free PMC article.
The objectives of this study were to determine whether weaned pigs with low hemoglobin (Hb) concentrations grow more slowly and produce poorer antibody response to vaccination compared to pigs with normal Hb concentrations, and to study the association between high …
The objectives of this study were to determine whether weaned pigs with low hemoglobin (Hb) concentrations grow more slowly and produ …
Identifying Active Salmonella Infections in Swine Nurseries Using Serology and Bacterial Culture and Evaluating Associated Risk Factors.
Nair S, Farzan A, Poljak Z, Friendship R. Nair S, et al. Among authors: farzan a. Animals (Basel). 2020 Aug 27;10(9):1517. doi: 10.3390/ani10091517. Animals (Basel). 2020. PMID: 32867163 Free PMC article.
The objectives of this study were: to identify nursery cohorts with an active Salmonella infection using combined serological and bacteriological methods, and to try to identify risk factors associated with swine nurseries with active Salmonella spread. Twenty pigs …
The objectives of this study were: to identify nursery cohorts with an active Salmonella infection using combined serological and bacteriolo …
41 results