Mortality of Broiler Chickens During Summer Fattening Periods Affected by Microclimatic Conditions

Veronika Šranková , Jana Lendelová , Štefan Mihina , Miroslav Žitňák , Grzegorz Nawalany

Abstract

Mortality of chickens during two summer fattening periods L1 and L2 in commonly used halls for chicken fattening in Slovakia have been evaluated in this paper. Effect of microclimatic conditions in housing area on recorded mortality has been analysed. Mortality was assessed in six halls, microclimate parameters and surface temperatures were continually measured only in one of the middle halls. It was documented that high mortality occurred during summer in the last phase (P3) of fattening period due to sudden hot weather waves. Daily mortality rate varied up to 447 birds in evaluated hall 3. During the last third of both fattening periods, it was significantly higher than during the first two phases (PL1 = 0.0036; PL2 = 1.4·10-6). Differences among halls were insignificant (PL1 = 0.614; PL2 = 0.413). In L1, average daily temperatures went beyond the recommended temperatures from 21st to 31st day. During L2, it was from 29th to 31st day and from 36th to 38th. The extra high mortality occurred in L1 on 31st day (447 birds) and during L2 on 36th day (88 birds), 37th day (96 birds) and 38th day (155 birds). High differential temperatures have been recorded and uninterrupted time periods (6 hours or more) with temperature higher than 30 °C and/or the relative humidity (RH) exceeding 70% were occurred during these days. In order to eliminate effect of sudden hot weather waves, modern digitally controlled microclimate regulation technologies (heat pumps, floor cooling, etc.) can be used, supported by data obtained from detailed microclimate analysis documented in this paper.
Author Veronika Šranková
Veronika Šranková,,
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, Jana Lendelová
Jana Lendelová,,
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, Štefan Mihina
Štefan Mihina,,
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, Miroslav Žitňák
Miroslav Žitňák,,
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, Grzegorz Nawalany (FoEEaLS / DoRC)
Grzegorz Nawalany,,
- Department of Rural Construction
Journal seriesActa Technologica Agriculturae, ISSN 1335-2555, e-ISSN 1338-5267, (N/A 40 pkt)
Issue year2019
Vol22
No1
Pages22-30
Publication size in sheets0.5
Keywords in Englishbroiler chicken housing; mortality; microclimate
ASJC Classification1102 Agronomy and Crop Science; 2210 Mechanical Engineering; 2311 Waste Management and Disposal
DOIDOI:10.2478/ata-2019-0005
URL https://content.sciendo.com/downloadpdf/journals/ata/22/1/article-p22.xml
Internal identifierWIŚIG/2019/75
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa - Użycie Niekomercyjne - Bez utworów zależnych (CC-BY-NC-ND); after publication
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Mortality of Broiler Chickens During Summer Fattening Periods Affected by Microclimatic Conditions of 08-10-2019
1,38 MB
Score (nominal)40
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.986
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