Reduced productivity among confined laying hens infested by Allopsoroptoides galli (Mironov, 2013)

Soares, Nilce Maria; Tucci, Edna Clara; Freitas, Ednardo Rodrigues; Fernandes, Danielle Priscila Bueno

doi:10.3382/ps/pev442

Cited by 7 publications

(7 citation statements)

References 12 publications

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“…The impact of the transmission of chickens with low IgY concentration is a decrease in body weight and an increase in feed conversion value. The results of this study are in line with the research of Soares et al (2016), which stated that disease-infected chickens use a large portion of the nutrients in their feed to form immunity in an effort to fight the transmitting antigens.…”

Section: Prelayer Performancesupporting

confidence: 88%

Production Performance, Reproduction and Immunity of Sentul Hens at Different IgY Concentrations

et al. 2019

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The aim of this study was to evaluate the effect of different IgY concentrations on the production, reproduction and immunity of Sentul chicken. This research used 20 month-old Sentul chickens which consisting of 10 chickens with high IgY concentration and 10 chickens with low IgY concentration Parameters observed included prelayer performance (feed consumption, weight gain, feed conversion, morbidity and mortality), layer performance (feed consumption, egg production, egg weight, feed conversion, hatchability, morbidity and mortality), and immunity at chicks (IgY concentration of eggs and chicks serum). The experiment was conducted as a completely randomized design. The treatments were high and low IgY concentration. All treatments were repeated 10 times. The data obtained were analyzed using the SAS program t-test. Morbidity and mortality were analyzed descriptively. The results of this research indicated that the prelayer period, chickens with high IgY concentration had a higher performance than chicken with low IgY concentration. This is caused by about 30% chickens with low IgY were in sick condition for approximately seven days. Further, the layer period showed that the chickens with high IgY concentration had lower production performance than the chicken with low IgY concentration. The study concluded that chickens at low IgY concentrations are susceptible to exposure to antigens that lead to decreased productivity. In normal conditions hens, Sentul with high IgY concentration resulted in low production. The observation of chicken immunity showed that concentration of IgY from chicks and eggs did not differ between hens with high IgY concentrations and hens with low IgY concentrations.

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Section: Prelayer Performancesupporting

confidence: 88%

Production Performance, Reproduction and Immunity of Sentul Hens at Different IgY Concentrations

et al. 2019

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“…In our study, the health status of the laying females, as mirrored by their ES rate values, was not related to the presence of laying gaps. Poultry scientists have shown that laying females can interrupt their laying or reduce their production output in cases of heavy mite infestations or dietary deficiencies or hormonal endocrine disruptions (Reddy et al, 2003;Sen and Sellix, 2016;Soares et al, 2016). Our negative findings could be related to the fact that in our experimental condition, females did not face difficulties related to foraging for food, nor were they subjected to a heavy parasite environment.…”

Section: Discussionmentioning

confidence: 73%

Egg Characteristics in Relation to Skipped Days of Laying in the Grey Partridge

Cucco

Grenna

Pellegrino

2017

Avian Biology Research

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Birds sometimes skip a day along the sequence of egg laying, which may vary the mass or the composition of delayed eggs compared with those that were laid consecutively. Our literature review shows that this has been interpreted as a short-term adaptation that enables females to overcome energetic constraints during the laying period, but other hypotheses implying the influence of weather, pollution, or hormonal cycles have also been proposed. We collected freshly laid Grey Partridge Perdix perdix eggs to determine the effects of laying gaps on egg characteristics. Egg shape, as well as egg components (beta-carotene, avidin and lysozyme concentrations) did not vary in relation to skipped days. Eggs were slightly heavier when one or two days were skipped (0.72% and 0.45%, respectively). However, when examining the hatching rate, we found a significant decrease in relation to skipped days, hence eggs following laying gaps showed a lower hatching rate than other eggs. The pattern observed could indicate the presence of some physiological stress that caused females to skip one or two days and to lay eggs that hatched less.

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“…Kaoud and El-Dahshan (2010) stated that mortality %, egg production and egg liveability % of breeders were affected by mite infestation, and they mentioned that under suitable environmental conditions the life cycle of D. gallinae could be completed in less than one week and that the mites could cause anaemia. Recently, in another study, Allopsoroptoides galli mite infestation causes a reduction in body weight, egg production and egg weight in laying hens (Soares et al 2016).…”

Section: Effect Of Mites and Dmt On Chicken Health And Productionmentioning

confidence: 96%

Prevalence of mites and their impact on laying hen (Gallus gallus domesticus) farm facilities in Egypt, with an analysis of deltamethrin residues in eggs and tissue

Eladl

Hamed²,

El‐Shafei

2017

Avian Pathology

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This study was carried out on six laying hen farms, three mite-infested and three mite-free at Dakahlia and Damietta governorates in Egypt to demonstrate: (i) prevalence of different species of mites on laying hen farms; (ii) effects of mite infestation on chicken health and production; (iii) efficacy of deltamethrin (DMT) on treatment of mite infestation and (iv) residues of DMT in eggs and meat. The results showed that 12 mite species were detected in the mite-infested farms, this is the first record in Egypt, and that Dermanyssus gallinae was the highest identified species from 295 (40.9%) of 720 samples. There was a significant effect (P ≤ 0.05) of mites on the mortality %, feed consumption, egg production % and the tested haematological parameters. DMT had no impact on production performance, while transient respiratory signs post-spraying were recorded. The mites induced severe skin lesions. Egg samples showed the highest residue levels of DMT, followed by muscle and skin at P ≤ 0.05. It can be concluded that the mite species, as a first record, had a deleterious impact on the performance of the Egyptian laying hen farm facilities. Moreover, that DMT (Butox 50 EC, Intervet Co., France) spraying was ineffective by one-time application, every 1 or 2 months in mite-infested laying hen farms, particularly when heavily infested. Furthermore, DMT residues in laying hen eggs and tissue should be considered to avoid the potential risk for humans.

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Reduced productivity among confined laying hens infested by Allopsoroptoides galli (Mironov, 2013)

Cited by 7 publications

References 12 publications

Production Performance, Reproduction and Immunity of Sentul Hens at Different IgY Concentrations

Production Performance, Reproduction and Immunity of Sentul Hens at Different IgY Concentrations

Egg Characteristics in Relation to Skipped Days of Laying in the Grey Partridge

Prevalence of mites and their impact on laying hen (Gallus gallus domesticus) farm facilities in Egypt, with an analysis of deltamethrin residues in eggs and tissue

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