Effects of heat stress on growth performance, selected physiological and immunological parameters, caecal microflora, and meat quality in two broiler strains
Objective This study was conducted to investigate the effects of normal and heat stress environments on growth performance and, selected physiological and immunological parameters, caecal microflora and meat quality in Cobb 500 and Ross 308 broilers. Methods One-hundred-and-twenty male broiler chick...
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| Format: | Article |
| Language: | English |
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Asian-Australasian Association of Animal Production Societies
2020-05-01
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| Series: | Asian-Australasian Journal of Animal Sciences |
| Subjects: | |
| Online Access: | http://www.ajas.info/upload/pdf/ajas-19-0208.pdf |
| _version_ | 1818337894441418752 |
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| author | Elmutaz Atta Awad Muhamad Najaa Zainool Abidin Zulaikha Idrus Zulkifli Abdoreza Farjam Soleimani |
| author_facet | Elmutaz Atta Awad Muhamad Najaa Zainool Abidin Zulaikha Idrus Zulkifli Abdoreza Farjam Soleimani |
| author_sort | Elmutaz Atta Awad |
| collection | DOAJ |
| description | Objective This study was conducted to investigate the effects of normal and heat stress environments on growth performance and, selected physiological and immunological parameters, caecal microflora and meat quality in Cobb 500 and Ross 308 broilers. Methods One-hundred-and-twenty male broiler chicks from each strain (one-day-old) were randomly assigned in groups of 10 to 24 battery cages. Ambient temperature on day (d) 1 was set at 32°C and gradually reduced to 23°C on d 21. From d 22 to 35, equal numbers of birds from each strain were exposed to a temperature of either 23°C throughout (normal) or 34°C for 6 h (heat stress). Results From d 1 to 21, strain had no effect (p>0.05) on feed intake (FI), body weight gain (BWG), or the feed conversion ratio (FCR). Except for creatine kinase, no strain×temperature interactions were observed for all the parameters measured. Regardless of strain, heat exposure significantly (p<0.05) reduced FI and BWG (d 22 to 35 and 1 to 35), immunoglobulin Y (IgY) and IgM, while increased FCR (d 22 to 35 and 1 to 35) and serum levels of glucose and acute phase proteins (APPs). Regardless of temperature, the Ross 308 birds had significantly (p<0.05) lower IgA and higher finisher and overall BWG compared to Cobb 500. Conclusion The present study suggests that the detrimental effects of heat stress are consistent across commercial broiler strains because there were no significant strain×temperature interactions for growth performance, serum APPs and immunoglobulin responses, meat quality, and ceacal microflora population. |
| first_indexed | 2024-12-13T15:02:28Z |
| format | Article |
| id | doaj.art-b5154ca480214d61b062fd4fad2a0cb6 |
| institution | Directory Open Access Journal |
| issn | 1011-2367 1976-5517 |
| language | English |
| last_indexed | 2024-12-13T15:02:28Z |
| publishDate | 2020-05-01 |
| publisher | Asian-Australasian Association of Animal Production Societies |
| record_format | Article |
| series | Asian-Australasian Journal of Animal Sciences |
| spelling | doaj.art-b5154ca480214d61b062fd4fad2a0cb62022-12-21T23:41:05ZengAsian-Australasian Association of Animal Production SocietiesAsian-Australasian Journal of Animal Sciences1011-23671976-55172020-05-0133577878710.5713/ajas.19.020824302Effects of heat stress on growth performance, selected physiological and immunological parameters, caecal microflora, and meat quality in two broiler strainsElmutaz Atta Awad0Muhamad Najaa1Zainool Abidin Zulaikha2Idrus Zulkifli3Abdoreza Farjam Soleimani4 Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia Department of Animal Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia Department of Animal Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, MalaysiaObjective This study was conducted to investigate the effects of normal and heat stress environments on growth performance and, selected physiological and immunological parameters, caecal microflora and meat quality in Cobb 500 and Ross 308 broilers. Methods One-hundred-and-twenty male broiler chicks from each strain (one-day-old) were randomly assigned in groups of 10 to 24 battery cages. Ambient temperature on day (d) 1 was set at 32°C and gradually reduced to 23°C on d 21. From d 22 to 35, equal numbers of birds from each strain were exposed to a temperature of either 23°C throughout (normal) or 34°C for 6 h (heat stress). Results From d 1 to 21, strain had no effect (p>0.05) on feed intake (FI), body weight gain (BWG), or the feed conversion ratio (FCR). Except for creatine kinase, no strain×temperature interactions were observed for all the parameters measured. Regardless of strain, heat exposure significantly (p<0.05) reduced FI and BWG (d 22 to 35 and 1 to 35), immunoglobulin Y (IgY) and IgM, while increased FCR (d 22 to 35 and 1 to 35) and serum levels of glucose and acute phase proteins (APPs). Regardless of temperature, the Ross 308 birds had significantly (p<0.05) lower IgA and higher finisher and overall BWG compared to Cobb 500. Conclusion The present study suggests that the detrimental effects of heat stress are consistent across commercial broiler strains because there were no significant strain×temperature interactions for growth performance, serum APPs and immunoglobulin responses, meat quality, and ceacal microflora population.http://www.ajas.info/upload/pdf/ajas-19-0208.pdfbroiler chickensheat exposurecaecal microbiotaα1-acid glycoproteinceruloplasminovotransferrin |
| spellingShingle | Elmutaz Atta Awad Muhamad Najaa Zainool Abidin Zulaikha Idrus Zulkifli Abdoreza Farjam Soleimani Effects of heat stress on growth performance, selected physiological and immunological parameters, caecal microflora, and meat quality in two broiler strains Asian-Australasian Journal of Animal Sciences broiler chickens heat exposure caecal microbiota α1-acid glycoprotein ceruloplasmin ovotransferrin |
| title | Effects of heat stress on growth performance, selected physiological and immunological parameters, caecal microflora, and meat quality in two broiler strains |
| title_full | Effects of heat stress on growth performance, selected physiological and immunological parameters, caecal microflora, and meat quality in two broiler strains |
| title_fullStr | Effects of heat stress on growth performance, selected physiological and immunological parameters, caecal microflora, and meat quality in two broiler strains |
| title_full_unstemmed | Effects of heat stress on growth performance, selected physiological and immunological parameters, caecal microflora, and meat quality in two broiler strains |
| title_short | Effects of heat stress on growth performance, selected physiological and immunological parameters, caecal microflora, and meat quality in two broiler strains |
| title_sort | effects of heat stress on growth performance selected physiological and immunological parameters caecal microflora and meat quality in two broiler strains |
| topic | broiler chickens heat exposure caecal microbiota α1-acid glycoprotein ceruloplasmin ovotransferrin |
| url | http://www.ajas.info/upload/pdf/ajas-19-0208.pdf |
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