alexa Light Environmental Management for Artificial Protected Horticulture
ISSN: 2168-9881

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Review Article

Light Environmental Management for Artificial Protected Horticulture

Wenke Liu1,2*

1Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China

2Key Labarotary of Energy Conservation and Waste Management of Agricultural Structures, Ministry of Agriculture, Beijing 100081, China

*Corresponding Author:
Dr. Wenke Liu
Institute of Environment and Sustainable Development in Agriculture
Chinese Academy of Agricultural Sciences, Beijing 100081, China
E-mail: [email protected]

Received Date: May 16, 2012; Accepted Date: May 19, 2012; Published Date: May 21, 2012

Citation: Liu W (2012) Light Environmental Management for Artificial Protected Horticulture. Agrotechnol 1:101. doi: 10.4172/2168-9881.1000101

Copyright: © 2012 Liu W. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



The objective of the study was to determine whether supplementing the diets of post-molted hens with organic selenium (Se) (Sel-Plex®) and/or organic Zinc (Zn) (Bio-Plex®)1 could improve laying hen performance. Prior to molting, 120-78 wk old laying hens were separated into four treatment groups of 30 hens per treatment and were subjected to molting. Molting was induced by reducing photoperiod from 16 h per day to 8 h, and the diet was changed from a standard layer diet (17% CP; 2830 ME/kg) to a straight crushed corn diet. When egg production was reduced to zero, the hens were fed a control diet, or a diet supplemented with 0.3 ppm Se/kg of feed; 20 ppm Zn/kg of feed, or a combination of Se and Zn.
Lighting was restored gradually to post-molting period. Changes in daily egg production, egg weight, egg quality (albumen, yolk, and shell weights), feed utilization and hen mortality were recorded. Results indicated that mean egg production was significantly (P<0.05) greater and feed utilization was significantly (P<0.05) lower for hens fed diet supplement with the combined treatment of Se and Zn compared to the other diets. Single treatment of Zn significantly (P<0.05) lowered mortality and increased egg production, but significantly (P<0.05) reduced egg, albumen and shell weights.




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