Effects of breeder age and dietary fat on subsequent broiler performance. 1. Growth, mortality, and feed conversion

The effects of breeder age (35, 51, and 63 wk) and added dietary fat on subsequent broiler growth, mortality, and feed conversion through 42 d were evaluated. Beginning at 22 wk of age, diets included 0, 1.5, or 3.0% added poultry fat (PF), 1.5 or 3.0% added corn oil (CO), or 3.0% added lard (LA). B...

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Bibliographic Details
Published in:Poultry science 1999-04, Vol.78 (4), p.505-511
Main Authors: Peebles, E.D, Doyle, S.M, Pansky, T, Gerard, P.D, Latour, M.A, Boyle, C.R, Smith, T.W
Format: Article
Language:English
Subjects:
age differences
Age Factors
Animal Feed
animal performance
Animals
broiler chickens
Chickens - growth & development
chicks
corn oil
Death
diet
dietary fat
Dietary Fats
Energy Metabolism
feed conversion
Female
hen feeding
hens
lard
liveweight gain
Male
mortality
Oviposition
poultry fat
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Summary:The effects of breeder age (35, 51, and 63 wk) and added dietary fat on subsequent broiler growth, mortality, and feed conversion through 42 d were evaluated. Beginning at 22 wk of age, diets included 0, 1.5, or 3.0% added poultry fat (PF), 1.5 or 3.0% added corn oil (CO), or 3.0% added lard (LA). Broilers from hens 35 wk of age performed better between 0 and 21 d than those from 51- and 63-wk-old hens. Conversely, between 22 and 42 d, broilers from hens 51 wk of age performed better than those at 35 and 63 wk. In relation to PF, CO added to breeder diets increased 0 to 21 d BW gain in broilers; whereas, feed conversion between 22 and 42 d was reduced in broilers from hens fed PF compared to those fed CO. In conclusion, breeder age influenced broiler performance differently throughout the growout period. Fat added at the 1.5% level to breeder hen diets was an effective energy source. However, less saturated fat improved growout performance.
ISSN:0032-5791
DOI:10.1093/ps/78.4.505