Impact of heat stress on the growth performance and retail meat quality of 2nd cross (Poll Dorset × (Border Leicester × Merino)) and Dorper lambs

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dc.contributor.author Zhang, M.
dc.contributor.author Warner, R.D.
dc.contributor.author Dunshea, F.R.
dc.contributor.author DiGiacomo, K.
dc.contributor.author Joy, A.
dc.contributor.author Abhijith, A.
dc.contributor.author Osei-Amponsah, R.
dc.contributor.author Hopkins, D.L.
dc.contributor.author Ha, M.
dc.contributor.author Chauhan, S.S.
dc.date.accessioned 2021-09-06T16:55:14Z
dc.date.available 2021-09-06T16:55:14Z
dc.date.issued 2021
dc.identifier.uri http://ugspace.ug.edu.gh/handle/123456789/36667
dc.description Research Article en_US
dc.description.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. en_US
dc.language.iso en en_US
dc.publisher Meat Science en_US
dc.subject Growth performance en_US
dc.subject Heat stress en_US
dc.subject Lamb meat en_US
dc.subject Retail display en_US
dc.title Impact of heat stress on the growth performance and retail meat quality of 2nd cross (Poll Dorset × (Border Leicester × Merino)) and Dorper lambs en_US
dc.type Article en_US


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