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The Use of Astroturf as a Dustbathin...

Alvino, Gina Maria,

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The Use of Astroturf as a Dustbathing Substrate for Laying Hens in the Furnished Cage Environment /

Record Type:	Electronic resources : Monograph/item
Title/Author:	The Use of Astroturf as a Dustbathing Substrate for Laying Hens in the Furnished Cage Environment // Gina Maria Alvino.
Author:	Alvino, Gina Maria,
Description:	1 electronic resource (75 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 75-05, Section: B.
Contained By:	Dissertations Abstracts International75-05B.
Subject:	Animal sciences. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3596842
ISBN:	9781303442018

The Use of Astroturf as a Dustbathing Substrate for Laying Hens in the Furnished Cage Environment /
Alvino, Gina Maria,

The Use of Astroturf as a Dustbathing Substrate for Laying Hens in the Furnished Cage Environment /Gina Maria Alvino. - 1 electronic resource (75 pages)

Source: Dissertations Abstracts International, Volume: 75-05, Section: B.

The use of conventional cages for housing commercial egg-laying hens has been criticized due to concerns about intense confinement and restriction of the hens' natural behaviors. As an alternative, furnished cages are now being introduced in Europe and in the United States. These cages provide the hens with more space and with resources that allow them to perform natural behaviors like foraging, scratching and dustbathing. To encourage these behaviors, an Astroturf (AT) pad with feed dispensed onto its surface is provided in the cage. However there is limited research on hens' utilization of this pad for dustbathing. Dustbathing is a comfort behavior that birds normally perform in loose (friable) material like soil or sand. It is important for the welfare of hens to perform this behavior, as it is internally motivated and functions to maintain feather quality. The objective of the three experiments reported in this thesis was to determine if AT is suitable to promote dustbathing. In my first experiment I found that neither AT nor AT plus feed (ATF) provided an optimal dustbathing substrate, as hens were less likely to dustbathe on them than on sand. Instead, hens given AT or ATF performed the majority of their dustbaths on the wire floor, an abnormal form of dustbathing that can cause feather damage. At the outset of this experiment the hens were 34 weeks old and had only been exposed to wire throughout their lives. Previous research has shown that a hen's early environment may influence her substrate preferences as an adult. Therefore, my second experiment investigated dustbathing by layer chicks housed with various substrates, including ATF. I found that chicks did use ATF for dustbathing and that those exposed to both ATF and wire simultaneously exhibited a clear preference for ATF. I then conducted a third experiment with 18 week-old hens from 3 different rearing treatments. The experiment was designed as a choice test where hens were provided with to AT, ATF and W simultaneously. Hens from all three rearing treatments preferred to dustbathe on ATF, avoided W and dustbathed on AT at approximately chance levels. Overall, my research revealed that older hens did not utilize AT substrates for dustbathing but that chicks and young hens, regardless of rearing treatment, did dustbathe on AT if it had feed on its surface. Future research should focus on aspects of feed provision and pad location in the commercial furnished cage environment.

English

ISBN: 9781303442018Subjects--Topical Terms:

3174829
Animal sciences.
Subjects--Index Terms:

Astorturf

The Use of Astroturf as a Dustbathing Substrate for Laying Hens in the Furnished Cage Environment /
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300 $a 1 electronic resource (75 pages)
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502 $b Ph.D. $c University of California, Davis $d 2013.
520 $a The use of conventional cages for housing commercial egg-laying hens has been criticized due to concerns about intense confinement and restriction of the hens' natural behaviors. As an alternative, furnished cages are now being introduced in Europe and in the United States. These cages provide the hens with more space and with resources that allow them to perform natural behaviors like foraging, scratching and dustbathing. To encourage these behaviors, an Astroturf (AT) pad with feed dispensed onto its surface is provided in the cage. However there is limited research on hens' utilization of this pad for dustbathing. Dustbathing is a comfort behavior that birds normally perform in loose (friable) material like soil or sand. It is important for the welfare of hens to perform this behavior, as it is internally motivated and functions to maintain feather quality. The objective of the three experiments reported in this thesis was to determine if AT is suitable to promote dustbathing. In my first experiment I found that neither AT nor AT plus feed (ATF) provided an optimal dustbathing substrate, as hens were less likely to dustbathe on them than on sand. Instead, hens given AT or ATF performed the majority of their dustbaths on the wire floor, an abnormal form of dustbathing that can cause feather damage. At the outset of this experiment the hens were 34 weeks old and had only been exposed to wire throughout their lives. Previous research has shown that a hen's early environment may influence her substrate preferences as an adult. Therefore, my second experiment investigated dustbathing by layer chicks housed with various substrates, including ATF. I found that chicks did use ATF for dustbathing and that those exposed to both ATF and wire simultaneously exhibited a clear preference for ATF. I then conducted a third experiment with 18 week-old hens from 3 different rearing treatments. The experiment was designed as a choice test where hens were provided with to AT, ATF and W simultaneously. Hens from all three rearing treatments preferred to dustbathe on ATF, avoided W and dustbathed on AT at approximately chance levels. Overall, my research revealed that older hens did not utilize AT substrates for dustbathing but that chicks and young hens, regardless of rearing treatment, did dustbathe on AT if it had feed on its surface. Future research should focus on aspects of feed provision and pad location in the commercial furnished cage environment.
546 $a English
590 $a School code: 0029
650 4 $a Animal sciences. $3 3174829
650 4 $a Behavioral sciences. $3 529833
653 $a Astorturf
653 $a Behavior
653 $a Dustbathing
653 $a Furnished cages
653 $a Laying hens
653 $a Welfare
690 $a 0475
690 $a 0602
710 2 $a University of California, Davis. $b Animal Biology. $e degree granting institution. $3 3822999
720 1 $a Mench, Joy A. $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 75-05B.
790 $a 0029
791 $a Ph.D.
792 $a 2013
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3596842