Obesity-associated cardiac pathogenesis in broiler breeder hens: Pathological adaption of cardiac hypertrophy

Broiler hens consuming feed to appetite (ad libitum; AL) show increased mortality. Feed restriction (R) typically improves reproductive performance and livability of hens. Rapidly growing broilers can exhibit increased mortality due to cardiac insufficiency but it is unknown whether the increased mo...

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Bibliographic Details
Published in:Poultry science 2017-07, Vol.96 (7), p.2428-2437
Main Authors: Chen, C Y, Lin, H Y, Chen, Y W, Ko, Y J, Liu, Y J, Chen, Y H, Walzem, R L, Chen, S E
Format: Article
Language:English
Subjects:
Animal Feed - analysis
Animals
Cardiomegaly - etiology
Cardiomegaly - mortality
Cardiomegaly - pathology
Cardiomegaly - veterinary
Chickens
Eating
Female
Incidence
Obesity - complications
Obesity - mortality
Obesity - veterinary
Poultry Diseases - etiology
Poultry Diseases - pathology
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Summary:Broiler hens consuming feed to appetite (ad libitum; AL) show increased mortality. Feed restriction (R) typically improves reproductive performance and livability of hens. Rapidly growing broilers can exhibit increased mortality due to cardiac insufficiency but it is unknown whether the increased mortality of non-R broiler hens is also due to cardiac compromise. To assess cardiac growth and physiology in fully mature birds, 45-week-old hens were either continued on R rations or assigned to AL feeding for 7 or 21 days. AL hens exhibited increased bodyweight, adiposity, absolute and relative heart weight, ventricular hypertrophy, and cardiac protein/DNA ratio by d 21 (P
ISSN:0032-5791
1525-3171
DOI:10.3382/ps/pex015