Experimental <i>Salmonella enterica</i> serovar Pullorum infection in two commercial varieties of laying hens

Pinheiro, Lucas Augusto Soeiro; Oliveira, Gláucia Helaine de; Berchieri, Ângelo

doi:10.1080/03079450120044524

Cited by 5 publications

(2 citation statements)

References 10 publications

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“…Liver and intestinal lesions were reported by Hossain et al (25). Liver congestion following S. Pullorum challenge corresponded with the findings of another experiment (26). Intensity of gross lesions reduced gradually at 21 days of age (Table 3).…”

Section: Postmortem Changessupporting

confidence: 86%

Effects of acetic acid supplementation in broiler chickens orallychallenged with Salmonella Pullorum

Saleem

Ramzaan

Khattak

et al. 2016

Turk J Vet Anim Sci

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This study was conducted to investigate the comparative efficacy of three different concentrations of acetic acid on broiler chickens experimentally challenged with Salmonella enterica serovar Pullorum (S. Pullorum). A total of 360 birds were divided into five groups (A-E). Group A served as the unchallenged, untreated control. All the birds in groups BE were challenged with 4 × 10 4 cfu/mL of S. Pullorum. Birds in groups C, D, and E were respectively treated with three different concentrations, 0.5%, 1%, and 1.5%, of acetic acid. Pathological examination revealed congested and hemorrhagic liver, hepatitis and necrotic areas in the liver, hydropericardium, focal necrosis in the spleen, epithelial desquamation of the intestinal mucosa, and congested lungs and hazy appearance of air sacs in birds challenged with S. Pullorum. Acetic acid supplementation (1%) helped to reduce the number and severity of these gross and histopathological changes. Counts of S. Pullorum in cecal digesta were significantly reduced with increasing concentrations of acetic acid (P < 0.05). However, acetic acid supplementation at a higher rate (1.5%) also showed adverse effects in terms of higher percentage of diarrhea and bad growth performance in birds challenged with S. Pullorum. Among the three different concentrations, 1% acetic acid supplementation showed partially protective effects by showing better growth performance, lower feed conversion ratios (P < 0.05), and lower rates of gross and histopathological changes.

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Section: Postmortem Changessupporting

confidence: 86%

Effects of acetic acid supplementation in broiler chickens orallychallenged with Salmonella Pullorum

Saleem

Ramzaan

Khattak

et al. 2016

Turk J Vet Anim Sci

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“…FT often impacts egg-laying chicken flocks, these being long-lived, mature birds, susceptible to extended periods of horizontal transmission. Among chickens, brown laying hens are generally more susceptible than white breeds to both FT and PD; experimentally, resistant types have yielded less frequent isolations or lower bacterial counts from tissues [18,23,58,59].…”

Section: Risk Groupsmentioning

confidence: 99%

JMM Profile: Salmonella enterica serovar Gallinarum, biovars Pullorum and Gallinarum

Wales

Lawes

2023

Journal of Medical Microbiology

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Salmonella serovar Gallinarum has two distinct biovars, Pullorum and Gallinarum. They are host-adapted avian pathogens that infect a number of wild and domesticated species but they pose a particular threat to farmed and backyard chickens and turkeys. Both biovars cause invasive and septicaemic disease, often resulting in high mortality. Pullorum is transmitted in eggs and typically affects birds soon after hatch. Gallinarum may cause disease in any age of bird, which often progresses through mature flocks. The establishment of clean breeding stock has resulted in freedom from the pathogens in many countries although even in these territories sporadic incursions still occur.

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EVALUATION OF Salmonella pullorum SHEDDING IN JAPANESE QUAILS (Coturnix coturnix)

et al. 2016

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Salmonella Pullorum is a pathogen that infects several species of birds, mainly offspring, and among them, quails. Therefore, this study was performed in order to evaluate the S. Pullorum shedding in experimentally infected Japanese quails (Coturnix coturnix) and egg contamination ability. S. Pullorum ATCC lyophilized was inoculated in all birds (60 quails at 160 days). Before the inoculation, rapid slide agglutination test was performed in all birds and individual cloacal swabs were collected randomly. Birds from group A and group B received 0.5mL of inoculum containing 1.5x102 CFU and 7.5 x 108 CFU of S. Pullorum, respectively, directly in the crop. The cloacal swab samples were collected on 3, 6, 9, 16 and 23 days post-inoculation (dpi) and all eggs were collected. Positive cloacal swab samples were initiated at the 3rd dpi. A total of 30 pool of eggs was analyzed, of which 73% positive for S. Pullorum until the 16th dpi. In conclusion, adult Japanese quails are possibly more resistant to the infection by S. Pullorum, but they can shed this pathogen in the environment as well.

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Experimental Salmonella enterica serovar Pullorum infection in two commercial varieties of laying hens

Cited by 5 publications

References 10 publications

Effects of acetic acid supplementation in broiler chickens orallychallenged with Salmonella Pullorum

Effects of acetic acid supplementation in broiler chickens orallychallenged with Salmonella Pullorum

JMM Profile: Salmonella enterica serovar Gallinarum, biovars Pullorum and Gallinarum

EVALUATION OF Salmonella pullorum SHEDDING IN JAPANESE QUAILS (Coturnix coturnix)

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