Effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios, heat shock protein 70 expression and body temperature of heat-stressed broiler chickens
We examined the effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios (HLR), heat shock protein (hsp) 70 expression and body temperature of heat-stressed male broiler chickens. On day (d) 1,chicks were subjected to (1) 60% feed restriction on d 4, 5, and 6 (FR);...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English English English |
| Published: |
Elsevier Science
2003
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/6466/ http://psasir.upm.edu.my/id/eprint/6466/1/Effects%20of%20early%20age%20feed%20restriction%20and%20heat%20conditioning%20on%20heterophil.pdf http://psasir.upm.edu.my/id/eprint/6466/7/1-s2.0-S030645650200058X-main.pdf |
| _version_ | 1848840385513652224 |
|---|---|
| author | Idrus, Zulkifli Liew, Pit Kang Israf Ali, Daud Ahmad Omar, Abdul Rahman Bejo, Mohd Hair |
| author_facet | Idrus, Zulkifli Liew, Pit Kang Israf Ali, Daud Ahmad Omar, Abdul Rahman Bejo, Mohd Hair |
| author_sort | Idrus, Zulkifli |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | We examined the effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios (HLR), heat shock protein (hsp) 70 expression and body temperature of heat-stressed male broiler chickens. On day (d) 1,chicks were subjected to (1) 60% feed restriction on d 4, 5, and 6 (FR); (2) exposure to 36±1°C for 1 h from d 1 to 21 (HT); (3) both FR and HT (FRHT); or (4) control. On d 35, all the birds were exposed to 39±1°C for 6 h. Subjecting chicks to FR, HT and FRHT reduced HLR response to the heat challenge. The FR and FRHT birds had improved hsp 70 response and the latter were more hyperthermic than controls during the heat exposure. |
| first_indexed | 2025-11-15T07:26:30Z |
| format | Article |
| id | upm-6466 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English English |
| last_indexed | 2025-11-15T07:26:30Z |
| publishDate | 2003 |
| publisher | Elsevier Science |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-64662024-07-25T06:44:35Z http://psasir.upm.edu.my/id/eprint/6466/ Effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios, heat shock protein 70 expression and body temperature of heat-stressed broiler chickens Idrus, Zulkifli Liew, Pit Kang Israf Ali, Daud Ahmad Omar, Abdul Rahman Bejo, Mohd Hair We examined the effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios (HLR), heat shock protein (hsp) 70 expression and body temperature of heat-stressed male broiler chickens. On day (d) 1,chicks were subjected to (1) 60% feed restriction on d 4, 5, and 6 (FR); (2) exposure to 36±1°C for 1 h from d 1 to 21 (HT); (3) both FR and HT (FRHT); or (4) control. On d 35, all the birds were exposed to 39±1°C for 6 h. Subjecting chicks to FR, HT and FRHT reduced HLR response to the heat challenge. The FR and FRHT birds had improved hsp 70 response and the latter were more hyperthermic than controls during the heat exposure. Elsevier Science 2003-04 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/6466/1/Effects%20of%20early%20age%20feed%20restriction%20and%20heat%20conditioning%20on%20heterophil.pdf text en http://psasir.upm.edu.my/id/eprint/6466/7/1-s2.0-S030645650200058X-main.pdf Idrus, Zulkifli and Liew, Pit Kang and Israf Ali, Daud Ahmad and Omar, Abdul Rahman and Bejo, Mohd Hair (2003) Effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios, heat shock protein 70 expression and body temperature of heat-stressed broiler chickens. Journal of Thermal Biology, 28 (3). pp. 217-222. ISSN 0306-4565 http://dx.doi.org/10.1016/S0306-4565(02)00058-X 10.1016/S0306-4565(02)00058-X English |
| spellingShingle | Idrus, Zulkifli Liew, Pit Kang Israf Ali, Daud Ahmad Omar, Abdul Rahman Bejo, Mohd Hair Effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios, heat shock protein 70 expression and body temperature of heat-stressed broiler chickens |
| title | Effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios, heat shock protein 70 expression and body temperature of heat-stressed broiler chickens |
| title_full | Effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios, heat shock protein 70 expression and body temperature of heat-stressed broiler chickens |
| title_fullStr | Effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios, heat shock protein 70 expression and body temperature of heat-stressed broiler chickens |
| title_full_unstemmed | Effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios, heat shock protein 70 expression and body temperature of heat-stressed broiler chickens |
| title_short | Effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios, heat shock protein 70 expression and body temperature of heat-stressed broiler chickens |
| title_sort | effects of early age feed restriction and heat conditioning on heterophil/lymphocyte ratios, heat shock protein 70 expression and body temperature of heat-stressed broiler chickens |
| url | http://psasir.upm.edu.my/id/eprint/6466/ http://psasir.upm.edu.my/id/eprint/6466/ http://psasir.upm.edu.my/id/eprint/6466/ http://psasir.upm.edu.my/id/eprint/6466/1/Effects%20of%20early%20age%20feed%20restriction%20and%20heat%20conditioning%20on%20heterophil.pdf http://psasir.upm.edu.my/id/eprint/6466/7/1-s2.0-S030645650200058X-main.pdf |