Document Detail

Experiments with the Bio-mittent lighting system for laying hens.
MedLine Citation:
PMID:  3409079     Owner:  NLM     Status:  MEDLINE    
1. Two experiments are described in which a system of intermittent lighting (15 min light followed by 45 min dark for 15 h, then 15 min light, 30 min dark, 15 min light and 8 h dark) was applied to laying pullets from 37 to 72 weeks of age. A step-up lighting programme was used as a control treatment (8L:16D from 0 to 18 weeks, photoperiod increased by 20 min each week from 18 to 41 weeks, 16L:8D from 41 to 72 weeks of age). 2. Food consumption was reduced by about 5% when intermittent lighting was in use and by 3.8% for the period from 18 to 72 weeks. 3. Rate of lay and egg weight were similar for intermittent lighting and the control treatment, provided that protein content of the diet was adjusted to maintain an adequate amino acid intake. 4. In the second trial 2 stocks, 2 stocking densities confounded with 2 temperatures and 2 types of food trough were used. Each of these factors affected food intake and it was found that more food was saved by intermittent lighting when intake was high and less when it was low. The proportion saved was approximately 5%. 5. Mortality was slightly but not significantly lower in both experiments where intermittent lighting was used. This may indicate that caged pullets are under less stress when intermittent lighting is used.
M Midgley; T R Morris; E A Butler
Related Documents :
7426609 - Performance of laying hens fed on practical diets containing different levels of supple...
3950569 - The cylindrical or tubiliform glands of nephila clavipes.
9034579 - Effect of constant and of changing photoperiods on age at first egg and related traits ...
7088799 - Residues of stirofos (rabon) in eggs of laying hens treated for northern fowl mite cont...
7717319 - Possibility of postprandial electrogastrography for evaluating vagal/nonvagal cholinerg...
2777719 - Cytochalasin d inhibits penetration of hamster eggs by guinea pig and human spermatozoa.
15866269 - Sources and pathways of selected organochlorine pesticides to the arctic and the effect...
18470879 - Dairy products, polymorphisms in the vitamin d receptor gene and colorectal adenoma rec...
18584299 - Analysis of production objectives and breeding practices of dairy goats in kenya.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  British poultry science     Volume:  29     ISSN:  0007-1668     ISO Abbreviation:  Br. Poult. Sci.     Publication Date:  1988 Jun 
Date Detail:
Created Date:  1988-10-12     Completed Date:  1988-10-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  15740290R     Medline TA:  Br Poult Sci     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  333-42     Citation Subset:  IM    
Ministry of Agriculture, Fisheries and Food, Agricultural Development and Advisory Service, Northampton, England.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Chickens / physiology*

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

Previous Document:  Experiments with the Cornell intermittent lighting system for laying hens.
Next Document:  Biochemical indicators of fatness in meat-type chickens: lack of correlation between lipoprotein lip...