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Poultry Science, Vol 78, Issue 4, 505-511
Copyright © 1999 by Poultry Science Association

Articles

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

ED Peebles, SM Doyle, T Pansky, PD Gerard, MA Latour, CR Boyle, and TW Smith

Department of Poultry Science, Mississippi State University, Mississippi State 39762, USA. dep2@ra.msstate.edu

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.


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