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52741

EFFECT OF EARLY HEAT CONDITIONING AND LIGHTING REGIME ON PHYSIOLOGICAL AND IMMUNE RESPONSES OF MUSCOVY DUCKS DURING SUMMER SEASON

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Last updated: 22 Jan 2023

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Abstract

The objective of this study was to investigate the beneficial effects of early age thermal conditioning and lighting regime to reduc adverse effects of hot weather condition, especially on the oxidative stress and immune function of Muscovy ducks. Experimental design was a 2 × 2 (4 groups of 160 ducks) during summer season. Ducks were divided into two equal groups. The control group, maintained under normal ambient temperature, the second group were exposed to early age thermal conditioning (exposed to temperature of 39±1°C for 6 h at 5th day of age and then subjected to normal ambient temperature. Each group of the previous groups were divided into subgroups at beginning 4 week of age. The first subgroup was subjected to normal day light (16 h light, 8h dark) and the second subgroup was subjected to intermittent light regime of 4h light 2h dark (make 16h light, 8h dark). Blood samples were collected at 12 weeks of age for assay of some blood parameters. The obtained results could be summarized as follows:                 Body temperature was significantly decreased by both early-age thermal conditioning or intermittent light regime. Plasma lysozyme concentration of Muscovy ducks were insignificantly increased in early heat exposed group compared to the control group. However, it significantly increased in intermittent light regime group. Corticosterone level and Hetrophil/lymphocyte ratio decreased in both thermally-conditioned and intermittent light groups compared to control group. Plasma malondialdehyde was significantly decreased in early heat exposed group compared to the control group. However, it insignificantly decreased in intermittent light regime group compared to control group. Superoxide dismutase and catalase enzymes increased in both thermally-conditioned and intermittent light groups compared to control group. It is concluded that a combination of early age thermal conditioning and intermittent light regime reduces oxidative stress and improves immune responses and this combination can be considered as bio-stimulation methods for the birds to reduc the negative effects of high ambient temperature.

DOI

10.21608/jappmu.2016.52741

Authors

First Name

A.

Last Name

EI-Badry

MiddleName

S. O.

Affiliation

Department of Rabbit Breeding Research, Animal Prod. Res. Inst., Agric. Res. Center, Ministry of Agric., Dokki, Giza, Egypt

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Orcid

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First Name

S.

Last Name

Abdel-Fattah

MiddleName

A.

Affiliation

Poultry production Dept., Fac. of Agric., Ain Shams Univ., Cairo, Egypt

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Orcid

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First Name

G.

Last Name

Moslim

MiddleName

A. G.

Affiliation

Department of Rabbit Breeding Research, Animal Prod. Res. Inst., Agric. Res. Center, Ministry of Agric., Dokki, Giza, Egypt

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Volume

6

Article Issue

3

Related Issue

8071

Issue Date

2015-03-01

Receive Date

2019-10-10

Publish Date

2015-03-01

Page Start

163

Page End

180

Print ISSN

2090-3642

Online ISSN

2090-3723

Link

https://jappmu.journals.ekb.eg/article_52741.html

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https://jappmu.journals.ekb.eg/service?article_code=52741

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3

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Original Article

Type Code

876

Publication Type

Journal

Publication Title

Journal of Animal and Poultry Production

Publication Link

https://jappmu.journals.ekb.eg/

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Article

Created At

22 Jan 2023