| Effects of dietary fat type and level on broiler breeder performance. | |
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MedLine Citation:
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PMID: 10824949 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The effects of added dietary fat type and level on broiler breeder performance were evaluated in two trials. In Trial 1, diets included no added fat (NAF) or 3.0% added poultry fat (PF) for individual bird energy intakes of 430 and 467 kcal/d at peak production (PCD), or 1.5% PF or 3.0% corn oil (CO) at 449 PCD. In Trial 2, diets contained NAF, 1.5 or 3.0% added CO or PF, or 3.0% lard (LA) for peak energy intakes of 463 PCD. All diets in Trial 2 were isocaloric and isonitrogenous. Feeding of experimental diets was initiated when breeders were 22 wk old in both trials, and hen BW was measured at various weeks between 22 and 47 wk in Trial 1 and between 27 and 65 wk in Trial 2. Egg production, egg weight (EW), eggshell quality, and hatchability were recorded at various weeks between 24 and 48 wk in Trial 1 and between 27 and 64 wk in Trial 2. Body weights and EW increased progressively, and eggshell quality fluctuated variably with age. Egg production peaked between Weeks 32 and 35, and hatchability was significantly depressed at Week 63. Egg weight and hatchability were not affected by dietary treatment; however, BW increased with energy level in the diet between Weeks 27 and 47. Body weight was also higher in birds fed 1.5 or 3.0% added fat compared with NAF and was higher in birds fed LA compared with CO at the 3.0% level. Egg specific gravity and shell weight per unit of surface area at Week 41 were increased by feeding low or high energy compared with moderate energy, and relative eggshell conductance was increased by using moderate compared with high energy diets and by feeding 1.5% PF compared with 3.0% PF. Egg specific gravity was increased by PF when compared with CO across fat level at Weeks 26 and 47 and by LA when compared with PF across fat level and breeder age. These data suggest that certain dietary energy and fat regimens may affect BW and eggshell quality without associated effects on EW and hatchability at various breeder ages. |
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Authors:
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E D Peebles; C D Zumwalt; S M Doyle; P D Gerard; M A Latour; C R Boyle; T W Smith |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Poultry science Volume: 79 ISSN: 0032-5791 ISO Abbreviation: Poult. Sci. Publication Date: 2000 May |
Date Detail:
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Created Date: 2000-08-11 Completed Date: 2000-08-11 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0401150 Medline TA: Poult Sci Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 629-39 Citation Subset: IM |
Affiliation:
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Department of Poultry Science, Mississippi State University, Mississippi State 39762-9665, USA. dpeebles@poultry.msstate.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Age Factors Animal Feed* Animals Body Weight Breeding* Chickens / metabolism, physiology* Corn Oil / administration & dosage, metabolism Dietary Fats / administration & dosage, metabolism* Eggs / standards Energy Intake Fatty Acids, Unsaturated / administration & dosage, metabolism Female Incubators Linoleic Acid / administration & dosage, metabolism Male Oviposition / physiology* Random Allocation Seasons |
| Chemical | |
Reg. No./Substance:
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0/Dietary Fats; 0/Fatty Acids, Unsaturated; 2197-37-7/Linoleic Acid; 8001-30-7/Corn Oil |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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