Avian diseases which affect egg production and quality

Roberts, Juliet R.; Souillard, Rozenn; Bertin, J.

doi:10.1533/9780857093912.3.376

Cited by 22 publications

(15 citation statements)

References 74 publications

(30 reference statements)

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“…Egg-laying performance also depends on general hen’s health as diseases and infections can induce loss of appetite and physiological failure thereby affecting animal growth, egg laying, and egg quality (eggshell deformation, eggshell defects, egg-white thinning, etc.). The most commonly found microbes in laying hens that affect hygienic egg quality are Salmonella enterica Enteritidis, mycoplasma, infectious bronchitis virus, and avian influenza virus [160]. Another major issue for hen welfare and egg quality is the poultry red mite that is found in most rearing systems for laying hens, regardless of the system type [161].…”

Section: Factors Affecting Egg Qualitymentioning

confidence: 99%

The Golden Egg: Nutritional Value, Bioactivities, and Emerging Benefits for Human Health

2019

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Egg is an encapsulated source of macro and micronutrients that meet all requirements to support embryonic development until hatching. The perfect balance and diversity in its nutrients along with its high digestibility and its affordable price has put the egg in the spotlight as a basic food for humans. However, egg still has to face many years of nutritionist recommendations aiming at restricting egg consumption to limit cardiovascular diseases incidence. Most experimental, clinical, and epidemiologic studies concluded that there was no evidence of a correlation between dietary cholesterol brought by eggs and an increase in plasma total-cholesterol. Egg remains a food product of high nutritional quality for adults including elderly people and children and is extensively consumed worldwide. In parallel, there is compelling evidence that egg also contains many and still-unexplored bioactive compounds, which may be of high interest in preventing/curing diseases. This review will give an overview of (1) the main nutritional characteristics of chicken egg, (2) emerging data related to egg bioactive compounds, and (3) some factors affecting egg composition including a comparison of nutritional value between eggs from various domestic species.

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Section: Factors Affecting Egg Qualitymentioning

confidence: 99%

The Golden Egg: Nutritional Value, Bioactivities, and Emerging Benefits for Human Health

2019

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“…The actual diagnosis of IBV infection is confusing with regard to clinical signs and postmortem lesions due to similar clinical signs produced by several respiratory pathogens, such as Newcastle disease (ND), avian influenza (AI), infectious laryngotracheitis (ILT) and infectious coryza (IC), and mycoplasma (Mg) [ 7 ]. Earlier reports stated that all respiratory pathogens can cause upper and lower respiratory infection, and significantly reduce egg production, requiring evidence from both field and laboratory results [ 152 ]. Likewise, typical signs of various poultry diseases are compared with other related diseases, for example, ND virus is involved with nervous symptoms, the bloody vomiting of ILT, facial swelling with lacrimation of IC, higher mortality in AI, and edema-swollen eyelids in MG. Egg-drop syndrome (EDS) is differentiated from IBV by shell quality and dropped production without infection.…”

Section: Differential Diagnosis Of Infectious Bronchitis Virusmentioning

confidence: 99%

Factor Influences for Diagnosis and Vaccination of Avian Infectious Bronchitis Virus (Gammacoronavirus) in Chickens

Bhuiyan

Amin

Bakar

et al. 2021

Veterinary Sciences

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Infectious bronchitis virus (IBV) is a major economic problem in commercial chicken farms with acute multiple-system infection, especially in respiratory and urogenital systems. A live-attenuated and killed vaccine is currently immunized to control IBV infection; however, repeated outbreaks occur in both unvaccinated and vaccinated birds due to the choice of inadequate vaccine candidates and continuous emergence of novel infectious bronchitis (IB) variants and failure of vaccination. However, similar clinical signs were shown in different respiratory diseases that are essential to improving the diagnostic assay to detect IBV infections. Various risk factors involved in the failure of IB vaccination, such as various routes of application of vaccination, the interval between vaccinations, and challenge with various possible immunosuppression of birds are reviewed. The review article also highlights and updates factors affecting the diagnosis of IBV disease in the poultry industry with differential diagnosis to find the nature of infections compared with non-IBV diseases. Therefore, it is essential to monitor the common reasons for failed IBV vaccinations with preventive action, and proper diagnostic facilities for identifying the infective stage, leading to earlier control and reduced economic losses from IBV disease.

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“…Common sense dictates that comprehensive bio-security and health programs remain in practice at the breeder farm level. Any deficiencies at this stage will adversely affect production performance parameters (Roberts et al, 2011).…”

Section: Health Status Of Breedersmentioning

confidence: 99%

Effect of pre-incubation and incubation conditions on hatchability and chick quality of Kuroiler chickens

Mwesigwa¹,

Semakula²,

Lusembo³

et al. 2016

Uganda Journal of Agricultural Sciences

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A study was conducted to review the effects of pre-incubation and incubation conditions on hatchability and chick quality of Kuroiler chickens. The most important incubation factors that affect hatch time, hatchability and hatch window (temperature, humidity, turning, and ventilation) were reviewed. There was a significant influence (P<0.05) of breeder age on hatchability. Also, there was significance (P<0.05) of breeder age on texture of the egg shell; while there was no significance (P > 0.05) between size of egg and hatch window. The performance of Kurolilers at the end of the rearing period depended, in part, on the quality of day-old chicks at placement. The quality of day-old chicks was highly affected by the incubation conditions, hatch time (which determines the time spent in the hatchery under high temperature and humidity), and handling of chicks after hatch.

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Avian diseases which affect egg production and quality

Cited by 22 publications

References 74 publications

The Golden Egg: Nutritional Value, Bioactivities, and Emerging Benefits for Human Health

The Golden Egg: Nutritional Value, Bioactivities, and Emerging Benefits for Human Health

Factor Influences for Diagnosis and Vaccination of Avian Infectious Bronchitis Virus (Gammacoronavirus) in Chickens

Effect of pre-incubation and incubation conditions on hatchability and chick quality of Kuroiler chickens

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