Lesions of the pericardium and their significance in the aetiology of heart failure in broiler chickens

Olkowski, A. A.; Wojnarowicz, Chris; Rathgeber, Bruce; Abbott, Jonathan A.; Classen, H. L.

doi:10.1016/s0034-5288(03)00004-3

Cited by 19 publications

(7 citation statements)

References 20 publications

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“…Ascites symptoms in broiler chickens include generalized oedema, fluid accumulation in the pericardium, hydropericardium (pericardial effusion) (Olkowski et al, 2003), in the abdominal cavity , epicardial fibrosis, lung oedema, enlarged, flaccid heart , hypertrophy and dilation of the heart, especially the right ventricle , variable liver changes, hypoxaemia, pale comb and higher blood haematocrit (Luger et al, 2003). These symptoms indicate that a large number of organs (including the heart, lung, liver, etc.)…”

Section: Ascites Symptomsmentioning

confidence: 99%

Ascites syndrome in broilers: physiological and nutritional perspectives

2008

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Broiler chickens are intensively selected for productive traits. The management of these highly productive animals must be optimal to allow their full genetic potential to be expressed. If this is not done, inefficient production and several metabolic diseases such as ascites become apparent. The causes of the ascites are multifactorial but diet and, particularly, interactions between diet, other environmental and genetic factors play an important role. The relatively high heritability estimates for ascites-related traits and the significance of maternal genetic effects for most of the traits indicate that direct and maternal genetic effects play an important role in development of the ascites syndrome. An imbalance between oxygen supply and the oxygen required to sustain rapid growth rates and high food efficiencies causes ascites in broiler chickens. Because of the relationship to oxygen demand, ascites is affected and/or precipitated by factors such as growth rate, altitude (hypoxia) and environmental temperature. As the high metabolic rate (fast growth) is a major factor contributing to the susceptibility of broilers to ascites, early-age feed or nutrient restriction (qualitative or quantitative) or light restriction in order to slow down the growth rate seem practically viable methods, since final body weight is not compromised. Manipulation of the diet composition and/or feed allocation system can have a major effect on the incidence of ascites. Optimization of the house temperature and ventilation in cold weather seem helpful practices to decrease ascites incidence.

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Section: Ascites Symptomsmentioning

confidence: 99%

Ascites syndrome in broilers: physiological and nutritional perspectives

2008

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“…Ascites is an economically important problem with high morbidity and mortality mainly affecting broiler chickens over the world (Tafti and Karima, 2000). Ascites is an important metabolic disorder in broiler industry, characterized by hypoxaemia, raised cardiopulmonary system workload (Luger et al, 2003), an excessive accumulation of fluid in peritoneal cavity (Olkowski et al, 2003), hypertrophy of the right ventricle associated with flaccid heart and finally death (Luger et al, 2003). Large number of organs (including the heart, liver, lung, etc.)…”

Section: Discussionmentioning

confidence: 99%

Bacteriological Studies on Ascites in Broiler Chickens

Abed

Hasan

El-Latif³

2020

Assiut Veterinary Medical Journal

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“…The pericardial effusions were graded based on the amount of fluid in pericardial sac. A large volume (5 ml) of pericardial effusion with severely distended pericardium was classified as severe lesion, and was considered a variable indicative of impending heart pump failure (Olkowski et al, 2003).…”

Section: Methodsmentioning

confidence: 99%

“…Clinical observations and necropsy findings from several studies indicate that many commercial broilers show subclinical signs of heart condition, and are at higher risk of heart failure (Odom et al, 1992;Owen et al, 1995;Olkowski et al, 1997Olkowski et al, , 1998Olkowski et al, , 1999Olkowski et al, , 2001Olkowski et al, , 2003Olkowski, 2007). However, factors that may increase the risk of heart failure in broilers are poorly understood.…”

Section: Introductionmentioning

confidence: 99%