Gizzard erosions as a cause of mortality in white leghorn chickens

Fossum, O.; Sandstedt, Karin; Engström, B.

doi:10.1080/03079458808436471

Cited by 23 publications

(17 citation statements)

References 11 publications

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“…This finding suggests that at least one factor which is affected by narasin, most probably narasin-sensitive bacteria, may contribute to the pathogenesis of GEU. This assumption is supported by previous work indicating an association between GEU and C. perfringens (Novoa-Garrido et al, 2006;Dinev, 2010) and a report stating that antibiotic treatment reduced GEU-associated mortality (Fossum et al, 1988). Our data show no effect of narasin on GEU in the absence of oat hulls; GEU was relatively severe whether narasin was present or not.…”

Section: Discussionsupporting

confidence: 81%

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Non-soluble fibres and narasin reduce spontaneous gizzard erosion and ulceration in broiler chickens

2012

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The prevalence and severity of gizzard erosion and ulceration syndrome (GEU) in broilers is affected by a number of predisposing and preventive factors. Two broiler experiments with almost identical basal diets were conducted to investigate the effect of dietary oat hulls, access to litter and the antimicrobial compound narasin on GEU. The effects on particle size of duodenal digesta, ileal starch concentration, caecal Clostridium perfringens counts, necrotic enteritis and production performance were also examined. Oat hulls reduced GEU severity and starch levels in the ileum in both experiments. Access to litter reduced GEU scores when oat hulls were included in the feed. Access to litter also improved feed efficiency and reduced C. perfringens counts. Narasin reduced GEU severity when the feed was supplemented with oat hulls. Oat hulls were associated with improved feed efficiency in Experiment 1 and impaired feed efficiency in Experiment 2. The inconsistent effect of oat hulls on production performance appeared to be related to an association between oat hulls and high C. perfringens counts in Experiment 2; an association that was absent in Experiment 1. In general, oat hulls interacted with litter access and narasin in exerting a positive effect on gizzard health. However, the association between oat hulls and necrotic enteritis detected in Experiment 2 suggests that the positive effect of oat hulls on GEU occasionally may be outweighed by a negative effect on gut health. In conclusion, our findings demonstrate that the severity of GEU in broilers was influenced by non-soluble fibres and narasin.

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Section: Discussionsupporting

confidence: 81%

“…This organism has also been associated with GEU (Novoa-Garrido et al, 2006;Dinev, 2010), and it has been reported that addition of antibiotics to the drinking water reduced GEU-associated mortality to normal within a few days (Fossum et al, 1988).…”

Section: Introductionmentioning

confidence: 99%

Non-soluble fibres and narasin reduce spontaneous gizzard erosion and ulceration in broiler chickens

2012

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“…GEU has also been found recently in commercial broiler flocks in Norway (unpublished data). Previous studies have linked GEU occurrence with several nutritional and infectious factors (Poupoulis & Jensen, 1976;Okazaki et al 1983;Fossum et al ., 1988;Hedman et al ., 1995;Kaya et al ., 2002;Hetland et al ., 2003;Ono et al ., 2003a;). C. perfringens has been isolated from chickens with gizzard lesions, but the aetiological role of C. perfringens in this condition is uncertain.…”

Section: Discussionmentioning

confidence: 99%

“…Also, in some cases, gizzards with such lesions have been examined for C. perfringens with positive results (unpublished data). Furthermore, C. perfringens was detected in the koilin layer of gizzards presenting erosions, but it was supposed that this was a secondary infection as a consequence of koilin layer damage induced by other factors (Fossum et al ., 1988). GEU has not previously been associated with C. perfringens counts in the intestinal tract and/or C. perfringens -associated NE.…”

Section: Introductionmentioning

confidence: 99%

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Association between gizzard lesions and increased caecalClostridium perfringenscounts in broiler chickens

Novoa-Garrido¹,

Larsen

Kaldhusdal

2006

Avian Pathology

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The aim of this study was to investigate the relationship between mucosal gizzard lesions and caecal Clostridium perfringens counts. Gross pathological changes in the gizzard and small intestine, and caecal C. perfringens counts from 1217 meat-type chickens were recorded during the course of six experiments and were statistically analysed. C. perfringens counts increased significantly (PB/0.001) with the severity of mucosal gizzard lesions. Mucosal gizzard lesions were more prevalent than necrotic enteritis. Correcting for the pen and necrotic enteritis within experiment, mucosal gizzard lesions explained 31.8% of the variation in C. perfringens counts. Mucosal gizzard lesions and age together explained 59.1% of the variation in C. perfringens counts. The mean ages of birds with moderate and severe mucosal gizzard lesions were 1.7 and 0.8 days lower than the mean age of birds with necrotic enteritis, respectively. The association between mucosal gizzard lesions and high C. perfringens counts might be of importance when attempting to improve production efficiency, health and the welfare of the chickens.

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