An Outbreak of Avian Urolithiasis on a Large Commercial Egg Farm

Bs, Cowen; Rf, Wideman; Rothenbacher, H; Mo, Braune

doi:10.2307/1590894

Cited by 19 publications

(9 citation statements)

References 15 publications

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“…Egg production was affected during this outbreak; the egg drop was estimated to 12%. This result doesn't correlate to the observations of (Cowen et al, 1986) who reported that layers affected by urolithiasis remain productive.…”

Section: Necropsy Observationscontrasting

confidence: 99%

“…Despite some differences in the age of the affected birds, necropsy observations and case history of this urolithiasis outbreak were similar to urolithiasis in caged layers described in United States (Brown et al, 1987;Cowen et al, 1986, Mallinson et al, 1984. Authors investigated the pathology of same urolithiasis outbreak in caged layers.…”

Section: Resultsmentioning

confidence: 84%

“…Results of similar outbreaks in Unites States (Cowen et al, 1986;Brown et al, 1987) showed that variant nephrotropic IBV may be involved in kidneys damage. Lee (2002) found that nephropathogenic strains of IBV cause lesions in the kidney, based on several tissue samples collected at various times.…”

Section: Necropsy Observationsmentioning

confidence: 97%

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Descriptive Study of an Outbreak of Avian Urolithiasis in a Large Commercial Egg Complex in Algeria

2011

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Avian urolithiasis is one of the major causes of mortality in poultry. However, in Algeria this condition has never been described. An outbreak of avian urolithiasis was observed on a large commercial egg complex in the department of Chlef (West of Algeria). The clinical features of this condition are to be described. Mortality associated to urolithiasis started at the onset of egg production, estimated to 0.7 % per week. Urolithiasis induced an egg drop estimated to 12%. Dead and live layers were both necropsied and examined for kidney lesions. Most of the birds examined presented enlarged ureters, renal atrophy and visceral gout deposition.

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Section: Necropsy Observationscontrasting

confidence: 99%

Section: Resultsmentioning

confidence: 84%

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Descriptive Study of an Outbreak of Avian Urolithiasis in a Large Commercial Egg Complex in Algeria

2011

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“…Urolithiasis sporadically causes mortality that is characterised by visceral gout, obstructive urolith (kidney stone) formation, and atrophy of mineralised or obstructed kidney tissue accompanied by compensatory hypertrophy of undamaged kidney tissue (Randall et ai, 1977;Jones et al, 1978;Blaxland et al, 1980;Siller, 1981;Wideman et al, 1983;Mallinson et al, 1984;Cowen et al, 1987a;Brown et al, 1987). Studies based on original observations (Shane et al, 1969) confirmed that urolithiasis can be induced when immature pullets are fed on diets containing more than 30 g/kg calcium and less than 4-5 g/kg available phosphorus Niznik et al, 1985;Wideman and Cowen, 1987;Glahn et al, 1988aGlahn et al, ,b, 1989.…”

Section: Introductionmentioning

confidence: 99%

Susceptibility of two commercial single comb white leghorn strains to calcium‐induced urolithiasis: Efficacy of dietary supplementation with dl‐methionine and ammonium sulphate

Lent

Wideman²

1993

British Poultry Science

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1. Susceptibility to calcium-induced urolithiasis was assessed in pullets of two commercial SCWL strains (A and B) reared together from 5 to 18 weeks of age on diets containing 10 g/kg calcium (normal calcium: NC) or 35 g/kg calcium (high calcium: HC). 2. Kidney damage was not observed in pullets reared on NC diets. For pullets fed on HC diets, strain A developed significantly greater kidney asymmetry, a higher incidence of gross kidney damage and a higher incidence of uroliths than strain B. 3. Supplementing the HC diet with 6 g/kg DL-methionine significantly reduced the incidence of calcium-induced gross kidney damage and urolith formation in both strains. Ammonium sulphate (5.3 g/kg) was significantly more effective than DL-methionine in reducing calcium-induced kidney damage. 4. Neither DL-methionine nor ammonium sulphate caused a measurable metabolic acidosis. Neither supplement consistently affected water consumption or manure moisture.

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“…Affected birds may die of kidney failure, exhibiting symptoms that include visceral gout, focal mineralization of the kidneys, degeneration of portions of kidneys "upstream" from kidney stones obstructing the ureter, and compensatory hypertrophy by undamaged kidney tissue (Randall et ah, 1977;Jones et al, 1978;Blaxland et al, 1980;Siller, 1981;Wideman et al, 1983;Mallinson et al, 1984;Brown et al, 1987;Cowen et al, 1987b). Urolithiasis can be induced by feeding 4-to 8-wk-old pullets diets containing in excess of 3% Ca and less than .45% available P (aP) (Shane et al, 1969;Niznik et al, 1985;Wideman et al, 1245Wideman et al, 1985Wideman and Cowen, 1987;Glahn et al, 1988aGlahn et al, ,b, 1989.…”

Section: Introductionmentioning

confidence: 99%

Liquid Methionine Hydroxy Analog (Free Acid) and DL-Methionine Attenuate Calcium-Induced Kidney Damage in Domestic Fowl

et al. 1993

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To evaluate the possibility that kidney damage may be induced by the commercial practice of feeding high-Ca (HCa) prelayer rations, and to evaluate the protective efficacy of supplementing HCa diets with liquid methionine hydroxy analog free acid or DL-methionine, 12-wk-old female Single Comb White Leghorn pullets were fed one of the following corn-soybean meal-based diets until they reached 22 wk of age: normal-Ca (NC, 1% Ca); HCa (HC, 3.5% Ca); HCa supplemented with .34 or .68% liquid methionine hydroxy analog free acid (HC3A or HC6A); or HCa supplemented with .3 or .6% DL-methionine (HC3DL or HC6DL). The unsupplemented HC diet caused a significant reduction in kidney mass and a significant increase in the incidence of gross kidney damage and urolithiasis in pullets necropsied at 22 wk of age. Calcium-induced kidney damage was attenuated in a dose-response fashion by supplementing the HC diet with liquid methionine hydroxy analog and DL-methionine. None of the diets caused a significant metabolic acidosis. Plasma uric acid concentrations were not predictive of the extent of Ca-induced kidney damage. Analyses of glomerular size distributions indicated that subclinical or "hidden" kidney damage may not progressively develop into urolithiasis as hens mature. When compared with hens reared on the NC diet, rearing hens on the HC, HC3A, HC3DL, HC6A, or HC6DL diets did not consistently affect hen-day egg production, egg mass, eggshell mass, percentage eggshell, or bone mineralization.

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An Outbreak of Avian Urolithiasis on a Large Commercial Egg Farm

Cited by 19 publications

References 15 publications

Descriptive Study of an Outbreak of Avian Urolithiasis in a Large Commercial Egg Complex in Algeria

Descriptive Study of an Outbreak of Avian Urolithiasis in a Large Commercial Egg Complex in Algeria

Susceptibility of two commercial single comb white leghorn strains to calcium‐induced urolithiasis: Efficacy of dietary supplementation with dl‐methionine and ammonium sulphate

Liquid Methionine Hydroxy Analog (Free Acid) and DL-Methionine Attenuate Calcium-Induced Kidney Damage in Domestic Fowl

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