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A systematic evaluation of laying he...

Green, Angela Renee.

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A systematic evaluation of laying hen housing for improved hen welfare.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	A systematic evaluation of laying hen housing for improved hen welfare./
作者:	Green, Angela Renee.
面頁冊數:	213 p.
附註:	Adviser: Hongwei Xin.
Contained By:	Dissertation Abstracts International69-01B.
標題:	Agriculture, Animal Culture and Nutrition. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3296796
ISBN:	9780549423379

A systematic evaluation of laying hen housing for improved hen welfare.
Green, Angela Renee.

A systematic evaluation of laying hen housing for improved hen welfare. - 213 p.

Adviser: Hongwei Xin.

Thesis (Ph.D.)--Iowa State University, 2008.

Husbandry practices for egg production vary throughout the world. Current production systems are typically classified as caged, cage-free, or free range in terms of housing style. The research presented supplements the existing knowledge base for laying-hen housing. Where possible, a systematic assessment approach was used in the comprehensive literature review, and combined field monitoring and controlled-environment laboratory studies. The results of this research demonstrate: differing environmental conditions and hen health under different housing schemes with varying weather; no difference in heat and moisture production for varying stocking density and group size; no clear advantage of offering additional space for coping with heat challenge; and the design and initial application of a preference chamber for assessing environmental preferences of laying hens.

ISBN: 9780549423379Subjects--Topical Terms:

1017857
Agriculture, Animal Culture and Nutrition.

A systematic evaluation of laying hen housing for improved hen welfare.
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245 1 2 $a A systematic evaluation of laying hen housing for improved hen welfare.
300 $a 213 p.
500 $a Adviser: Hongwei Xin.
500 $a Source: Dissertation Abstracts International, Volume: 69-01, Section: B, page: 0459.
502 $a Thesis (Ph.D.)--Iowa State University, 2008.
520 $a Husbandry practices for egg production vary throughout the world. Current production systems are typically classified as caged, cage-free, or free range in terms of housing style. The research presented supplements the existing knowledge base for laying-hen housing. Where possible, a systematic assessment approach was used in the comprehensive literature review, and combined field monitoring and controlled-environment laboratory studies. The results of this research demonstrate: differing environmental conditions and hen health under different housing schemes with varying weather; no difference in heat and moisture production for varying stocking density and group size; no clear advantage of offering additional space for coping with heat challenge; and the design and initial application of a preference chamber for assessing environmental preferences of laying hens.
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650 4 $a Biology, Animal Physiology. $3 1017835
650 4 $a Engineering, Agricultural. $3 1019504
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710 2 $a Iowa State University. $b Agricultural and Biosystems Engineering. $3 1026283
773 0 $t Dissertation Abstracts International $g 69-01B.
790 $a 0097
790 1 0 $a Cook, Dianne $e committee member
790 1 0 $a Harmon, Jay $e committee member
790 1 0 $a Hoff, Steve $e committee member
790 1 0 $a Johnson, Anna $e committee member
790 1 0 $a Xin, Hongwei, $e advisor
791 $a Ph.D.
792 $a 2008
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3296796