Host age only partially affects resistance to primary and secondary infections with Ascaridia galli (Schrank, 1788) in chickens

Idi, Alhaji Sadiq; Permin, A.; Murrell, K. D.

doi:10.1016/j.vetpar.2004.04.006

Cited by 25 publications

(22 citation statements)

References 11 publications

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“…This was usually followed by a more or less pronounced decline in egg output. In this respect our results confirm those of Idi et al (2004), who demonstrated that immunity to A. galli develops slowly and the level of protection is partial. It was also striking that flocks C, E and F became more heavily infected with adults than flock A, B and D. Worth noting is that this was not directly linked to whether the farm was organic or conventional.…”

Section: Discussionsupporting

confidence: 91%

Infection dynamics of Ascaridia galli in non-caged laying hens

Höglund

Jansson

2011

Veterinary Parasitology

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Section: Discussionsupporting

confidence: 91%

Infection dynamics of Ascaridia galli in non-caged laying hens

Höglund

Jansson

2011

Veterinary Parasitology

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“…Dubinský et al (1975) also reported that chickens infected with A. galli and fed diets deficient in vitamins A, D, E, K, riboflavin and pantothenic acid suffered higher weight loss, morbidity and mortality than their infected fellows fed a vitaminadequate diet. However, others have reported that chickens infected with a low dose of A. galli but fed adequate diets compensated for the infection without showing any clinical signs (Dubinský et al, 1973;, Idi et al, 2004. The effect of A. galli infection on chicken performance in the present investigation was aggravated by vitamin A deficiency, without apparent compensation.…”

Section: Discussioncontrasting

confidence: 46%

Effect of a minor vitamin A deficiency on the course of infection with Ascaridia galli (Schrank, 1788) and the resistance of chickens

Idi

Permin²,

Jensen³

et al. 2007

Helminthologia

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The effect of vitamin A deficiency was studied in chickens infected with 500 Ascaridia galli eggs and controls. Diet 1 (deficient, 500 IU vitamin A or 172 μg retinol acetate per kg diet), Diet 2 (deficient, 1000 IU vitamin A or 344 μg retinol acetate per kg diet) and Diet 3 (sufficient, 1500 IU vitamin A or 516 μg retinol acetate per kg diet) were assigned to 46 chickens each. Clinical signs, weight gains, livers’ weights, vitamin A levels, worm burdens and parasite eggs’ excretions were recorded.Infected chickens had lower weight gains than the controls fed alike. Chickens given Diet 1 stored lesser vitamin A in liver than those fed Diet 3. Although worm counts in the 3 groups did not differ significantly, chickens fed Diet 1 excreted more A. galli eggs than those fed the 2 other diets. Female worms harboured by chickens fed Diet 1 had higher fecundity at week 5 pi than those of chickens fed Diet 2. Results indicated that Vitamin A is important for poultry in the moderation of the infection with A. galli.

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“…This reduction is more pronounced compared with results from organic farms in Sweden [25] and is most likely due to a loss of adult worms, which could be more pronounced in hens exposed to continuous infection than it has been observed after single experimental challenge [26]. Worm numbers and fecal egg counts of flocks X2, Y1, and the treated flock, Y2, are within the range observed in layers [6] and higher than those reported from a Danish study [27] at similar stocking rates.…”

Section: Practical Impactmentioning

confidence: 64%