Zhang, M, Warner, RD, Dunshea, FR orcid.org/0000-0003-3998-1240 et al. (7 more authors) (2021) Impact of heat stress on the growth performance and retail meat quality of 2nd cross (Poll Dorset × (Border Leicester × Merino)) and Dorper lambs. Meat Science, 181. 108581. ISSN 0309-1740
Abstract
The present study investigated the impact of heat stress and genetics on lamb growth performance and meat quality. Forty-eight Dorper and 2nd cross [Poll Dorset × (Border Leicester × Merino)] lambs (38‐–42 kg; 4–5 months old) were allocated to either thermoneutral [TN; 18–21 °C, 45–55% relative humidity (RH)], or heat stress (HS; 28 °C–38 °C, 40–60% RH) conditions in a 2 × 2 factorial design for 2 weeks. Compared with 2nd cross, Dorper lambs had a lower respiration rate (RR) and rectal temperature (RT), and exhibited less decline in body weight under HS. 2nd cross lambs showed a higher body weight gain than Dorpers under TN conditions. HS increased a* and chroma of the Longissimus thoracis et lumborum (LTL) from 2nd cross lambs over 10 days of display, but had no impact on Dorper LTL. In conclusion, Dorpers showed higher heat tolerance compared with 2nd cross lambs during the 2 weeks HS.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 Elsevier Ltd. All rights reserved. This is an author produced version of an article published in Meat Science. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Growth performance; Heat stress; Lamb meat; Retail display |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Biological Sciences (Leeds) > School of Biology (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 22 Aug 2022 08:21 |
Last Modified: | 22 Aug 2022 11:14 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.meatsci.2021.108581 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:190154 |
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