Document Detail

Effect of diet and population density on male turkeys under various environmental conditions. 1. Turkey growth and health performance.
MedLine Citation:
PMID:  1876567     Owner:  NLM     Status:  MEDLINE    
The performance of 1,312 male market turkeys (Large White, Nicholas strain) from 0 to 20 wk of age fed diets varying in feed form and energy level was measured under two stocking densities (.21 or .46 m2 per bird) and four lighting and temperature programs. The four diets were 1) corn and soybean meal with 1% supplemental fat, mash (CSM); 2) as 1, pelleted (CSP); 3) as Diet 1 but with 1, 2, 4, 6, and 8% supplemental fat during 0 to 4, 4 to 8, 8 to 12, 12 to 16, and 16 to 20 wk of age, respectively (CSF); and 4) as Diet 1 but with barely included at 0, 20, 35, 50, and 65% during the respective 4-wk age periods (CSB). The four light and temperature programs were 1) Environment A with intermittent light [4 [2 h light (L):4 h dark (D)]] in combination with cycling temperature at 7 and 21 C during light and dark photoperiod, respectively; Environment B with intermittent light, 21 C; Environment C with continuous light (18L:6D) and cycling temperature of 7 to 21 C; and Environment D with intermittent light, 7 C. Lighting and temperature programs started at 1 and 4 wk of age, respectively. Body weights at 20 wk of age decreased (P less than .05) with increasing temperature (13.86 versus 12.26 kg for Environments D and B, respectively) with cycling temperature intermediate (13.51 kg for Environment A). Intermittent light (P less than .05) improved BW and feed conversion by 3.4 and 2.0%, respectively, compared with continuous light. Rearing males at .21 m2 per bird versus .46 m2 per bird decreased weight (P less than .05) by 5.5%. Twenty-week BW of males fed the CSP (13.52 kg) and CSF (13.58 kg) diets were greater (P less than .05) than those fed CSM (12.90 kg) and CSB (12.69 kg) diets. Significant (P less than .05) interactions between diet, environment, and density were not detected for most performance characteristics. Environmental measurements indicated higher dust and ammonia levels in the warm environment (B). Isolates of aspergillus and incidence of airsacculitis at time of processing were greatest in Environment B.
S L Noll; M E el Halawani; P E Waibel; P Redig; K Janni
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Poultry science     Volume:  70     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  1991 Apr 
Date Detail:
Created Date:  1991-09-26     Completed Date:  1991-09-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  923-34     Citation Subset:  IM    
Department of Animal Science, University of Minnesota, St. Paul 55108.
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MeSH Terms
Air Sacs
Animal Feed*
Animal Husbandry*
Aspergillosis / epidemiology,  veterinary
Aspergillus fumigatus / isolation & purification
Health Status*
Population Density
Poultry Diseases / epidemiology
Respiratory Tract Diseases / epidemiology,  veterinary
Turkeys / growth & development*
Weight Gain

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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