The ecology of Escherichia coli in healthy newborn piglets

1987 ◽  
Vol 143 (6) ◽  
pp. 541-548 ◽  
Author(s):  
M. Hinton ◽  
A.H. Linton
2003 ◽  
Vol 53 (6) ◽  
pp. 950-955 ◽  
Author(s):  
Gwendolyn E McDeigan ◽  
John Ladino ◽  
Dorothy Hehre ◽  
Carlos Devia ◽  
Eduardo Bancalari ◽  
...  

1998 ◽  
Vol 66 (9) ◽  
pp. 4560-4563 ◽  
Author(s):  
Evelyn A. Dean-Nystrom ◽  
Brad T. Bosworth ◽  
Harley W. Moon ◽  
Alison D. O’Brien

ABSTRACT Enterohemorrhagic Escherichia coli (EHEC) strains require intimin to induce attaching and effacing (A/E) lesions in newborn piglets. Infection of newborn calves with intimin-positive or intimin-negative EHEC O157:H7 demonstrated that intimin is needed for colonization, A/E lesions, and disease in cattle. These results suggest that experiments to determine if intimin-based vaccines reduce O157:H7 levels in cattle are warranted.


Animals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2465
Author(s):  
Sophia E. Holdsworth ◽  
Nikki J. Kells ◽  
Kirsty L. Chidgey ◽  
Emilie Vallée ◽  
Neil Ward ◽  
...  

A thoracic squeeze has been observed to cause both healthy and low vigour neonatal foals to enter a ‘less-responsive state’, characterised by loss of posture, eye closure and cessation of movement, from which they rapidly recover to express normal healthy behaviours when the squeeze is released. To date, there have been no systematic studies characterising the responses of healthy neonates of other mammalian species to a thoracic squeeze. We describe the responses of healthy newborn piglets (n = 17) to a standardised application of the thoracic squeeze and evaluate the effect of the method of squeeze application on the response. Neonatal piglets were squeezed around the chest with either a soft fabric rope as has been used in foals (n = 8) or a novel purpose-made inflation cuff (n = 9). Both methods were effective at inducing a less-responsive behavioural state in all piglets, with neural reflexes reduced or absent in over half of them. The inflation cuff appeared to induce the less-responsive state faster than the rope, and more piglets squeezed with the cuff remained in this state for the full 10-min squeeze. These findings suggest that the behavioural response of foals to thoracic squeezing can be generalised to neonates of other precocial mammalian species. This initial study provides a foundation for further research using the inflation cuff to explore mechanisms underlying the thoracic squeeze and ways in which it may be applied whilst performing husbandry procedures.


2001 ◽  
Vol 78 (1) ◽  
pp. 91 ◽  
Author(s):  
Maria de Fátima Martins ◽  
Nilce M Martinez-Rossi ◽  
Alessandra Ferreira ◽  
Marcelo Brocchi ◽  
Tomamasa Yano ◽  
...  

2011 ◽  
Vol 137 (1) ◽  
pp. 44-49 ◽  
Author(s):  
Jiang-Qin Liu ◽  
Tze-Fun Lee ◽  
Margaret Miedzyblocki ◽  
Godfrey C.F. Chan ◽  
David L. Bigam ◽  
...  

2021 ◽  
Vol 8 (29) ◽  
pp. 183-190
Author(s):  
Cideli de Paula Coelho ◽  
Francisco Rafael Martins Soto ◽  
Erlete Rosalina Vuaden ◽  
Priscilla Anne Melville ◽  
Flávia Carolina Souza Oliveira ◽  
...  

Escherichia coli is the most important etiologic agent implied in neonatal diarrhea in swine; colibacillosis is the disease with highest impact in production of swine. The demands of consumers for meat without chemical residues and the ban on the use of antibiotics and chemotherapics in production of swine compelled to find alternative therapeutic and preventive treatments. Aims: to assess homeopathic treatment as preventive against colibacillosis in swine. Methods: the study was conducted in a farm in Mato Grosso, Brazil; stools of 4 piglets with diarrhea were collected to establish the presence of E. coli; concomitantly it was performed a clinical exam to identify the symptoms leading to the choice of a homeopathy remedy. Newborn piglets were divided into 4 groups (n= 11 or 12): 1) control, subjected to antibiotic treatment against diarrhea; 2) homeopathic treatment, performed with Phosphorus 30cH according to the symptoms collected; 3) biotherapic treatment, performed with Escherichia coli 30cH prepared from the locally obtained bacteria; 4) homeopathic + biotherapics treatment. Results: all 3 groups treated with homeopathy/isotherapy presented a significant reduction of diarrhea compared to the control group (p=0.02); the group treated with Phosphorus 30cH + Escherichia coli 30cH presented the highest weight gain which was significant by comparison to all other groups (p=0.001). Conclusion: homeopathic and biotherapics treatment were more effective than antibiotics in the control of diarrhea in newborn piglets; combination of homeopathic and isopathic treatment resulted in the highest weight gain. These results suggest that homeopathy and isopathy are effective alternatives for the treatment of diarrhea by E. coli in newborn swine.


2005 ◽  
Vol 25 (1) ◽  
pp. 31-33
Author(s):  
Mário Paulo A. Penatti ◽  
Alex S. Silva ◽  
Geórgio F. Valadares ◽  
Domingos S. Leite

The objective of this study was to determine the presence of the colonization factor F42 in 168 strains of Escherichia coli isolated from diarrheic stools of newborn piglets. The presence of F42 in 12 (7.1%) strains was detected with the agglutination test. Through the Polymerase Chain Reaction (PCR) of F42 positive strains, gene encoding enterotoxins (ST-I, ST-II, LT-I and LT-II) were detected. The finding of ST-I/ST-II genes in 50% of the strains, ST-I (16%) and ST-II (25%) indicates a strong association of FC F42 with heat-stable enterotoxins (91%). In contrast, the thermolabile enterotoxin (LT-I and LT-II) genes were not detected. Serogroups of F42 positive strains were determined, serogroup O8 being the most prevalent (41,7%). Other serogroups, as there are O9, O11, O18, O32, O35, O98 and O101, were also identified. Thus, FC F42 was confirmed as an additional factor of virulence in the pathogenesis of porcine colibacillosis.


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