國立虎尾科技大學 |

Evaluating Thermal Comfort of Broiler Chickens during Transportation Using Heat Index and Simulated Electronic Chickens.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Evaluating Thermal Comfort of Broiler Chickens during Transportation Using Heat Index and Simulated Electronic Chickens./
Author:	Luthra, Kaushik.
Description:	1 online resource (99 pages)
Notes:	Source: Masters Abstracts International, Volume: 56-05.
Contained By:	Masters Abstracts International56-05(E).
Subject:	Agricultural engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9780355112054

Evaluating Thermal Comfort of Broiler Chickens during Transportation Using Heat Index and Simulated Electronic Chickens.
Luthra, Kaushik.

Evaluating Thermal Comfort of Broiler Chickens during Transportation Using Heat Index and Simulated Electronic Chickens. - 1 online resource (99 pages)

Source: Masters Abstracts International, Volume: 56-05.

Thesis (M.S.B.E.)--University of Arkansas, 2017.

Includes bibliographical references

Broilers experience high physiological stress during pre-slaughter transport, especially under extremes of thermal environment. Characterization of thermal environment on the trailer is crucial to identify stress-prone regions during transportation. At the same time, Broilers experience high physiological stress during pre-slaughter transport, especially under extremes of thermal environment. Characterization of thermal environment on the trailer is crucial to identify stress-prone regions during transportation. At the same time, quantification of heat loss of the broilers loaded on trailers is important in understanding the well-being of the broilers. We have developed four electronic chickens (E-chickens) to simulate the sensible heat loss of live broiler during transit and holding period in commercial live-haul trips. It is an average broiler-sized enclosure with a thermostatically controlled circuit to keep the internal temperature at 41°C. Power consumption as a result of four different combinations of covering the enclosure as well as their sensitivity with exposed wind were compared. Double layer of fleece fabric was selected as the insulation cover for the E-chickens to match the sensible heat production reported in literature. Heat loss exhibited a positive correlation with the wind and a negative correlation with the temperature gradient between internal and external environment. However, the wet cover of E-chickens did not increase heat loss compared to dry cover, indicating its inability to release moisture unlike evaporation from natural feathers and respiratory water loss. Thirty-two commercial live-haul trips were monitored to determine humidity ratio increase-above-ambient air humidity, E-chickens were installed in eight of the trips. Moderate levels of measured power consumption of the E-chickens suggested that ambient temperatures in the range of 11°C-25.1°C (during transit) and 5.3°C-21.7°C (during holding) were in the zone of thermal comfort (allowing the live chickens to regulate heat by their metabolism to stay comfortable). For the holding period, the winter trips were mostly in the zone of thermal comfort, but during summers, hyperthermic conditions were widespread during transit. Fan-assisted evaporative cooling during on-farm loading may have introduced additional cooling due to wetting of live chicken surface, not quantified by the limitation of E-chickens. The mild weather observed during spring and fall season was the most comfortable for broilers.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355112054Subjects--Topical Terms:

1148660
Agricultural engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Evaluating Thermal Comfort of Broiler Chickens during Transportation Using Heat Index and Simulated Electronic Chickens.
LDR:03788ntm a2200349Ki 4500 001 917380
005 20181012133445.5
006 m o u
007 cr mn||||a|a||
008 190606s2017 xx obm 000 0 eng d
020 $a 9780355112054
035 $a (MiAaPQ)AAI10605343
035 $a (MiAaPQ)uark:12647
035 $a AAI10605343
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Luthra, Kaushik. $3 1191408
245 1 0 $a Evaluating Thermal Comfort of Broiler Chickens during Transportation Using Heat Index and Simulated Electronic Chickens.
264 0 $c 2017
300 $a 1 online resource (99 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 56-05.
500 $a Adviser: Yi Liang.
502 $a Thesis (M.S.B.E.)--University of Arkansas, 2017.
504 $a Includes bibliographical references
520 $a Broilers experience high physiological stress during pre-slaughter transport, especially under extremes of thermal environment. Characterization of thermal environment on the trailer is crucial to identify stress-prone regions during transportation. At the same time, Broilers experience high physiological stress during pre-slaughter transport, especially under extremes of thermal environment. Characterization of thermal environment on the trailer is crucial to identify stress-prone regions during transportation. At the same time, quantification of heat loss of the broilers loaded on trailers is important in understanding the well-being of the broilers. We have developed four electronic chickens (E-chickens) to simulate the sensible heat loss of live broiler during transit and holding period in commercial live-haul trips. It is an average broiler-sized enclosure with a thermostatically controlled circuit to keep the internal temperature at 41°C. Power consumption as a result of four different combinations of covering the enclosure as well as their sensitivity with exposed wind were compared. Double layer of fleece fabric was selected as the insulation cover for the E-chickens to match the sensible heat production reported in literature. Heat loss exhibited a positive correlation with the wind and a negative correlation with the temperature gradient between internal and external environment. However, the wet cover of E-chickens did not increase heat loss compared to dry cover, indicating its inability to release moisture unlike evaporation from natural feathers and respiratory water loss. Thirty-two commercial live-haul trips were monitored to determine humidity ratio increase-above-ambient air humidity, E-chickens were installed in eight of the trips. Moderate levels of measured power consumption of the E-chickens suggested that ambient temperatures in the range of 11°C-25.1°C (during transit) and 5.3°C-21.7°C (during holding) were in the zone of thermal comfort (allowing the live chickens to regulate heat by their metabolism to stay comfortable). For the holding period, the winter trips were mostly in the zone of thermal comfort, but during summers, hyperthermic conditions were widespread during transit. Fan-assisted evaporative cooling during on-farm loading may have introduced additional cooling due to wetting of live chicken surface, not quantified by the limitation of E-chickens. The mild weather observed during spring and fall season was the most comfortable for broilers.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Agricultural engineering. $3 1148660
650 4 $a Animal sciences. $3 1178863
650 4 $a Environmental management. $3 557131
655 7 $a Electronic books. $2 local $3 554714
690 $a 0539
690 $a 0475
690 $a 0474
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a University of Arkansas. $b Biological Engineering. $3 1191409
773 0 $t Masters Abstracts International $g 56-05(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10605343 $z click for full text (PQDT)