Effects of Increasing Stocking Density on the Performance and Ileal Microbiota of Broilers
This study was conducted to investigate the effects of increasing stocking density under suitable environmental conditions on the performance and ileal microbiota of broilers. A total of 108 Arbor Acres male broilers (28 days old) were allocated to a normal stocking density (NSD, normal stocking de...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Japan Poultry Science Association
2022-07-01
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| Series: | The Journal of Poultry Science |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jpsa/59/3/59_0210089/_pdf/-char/en |
| _version_ | 1797817073918803968 |
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| author | Yaowen Li Shuang Xing Xuejie Wang Xiumei Li Minhong Zhang Jinghai Feng |
| author_facet | Yaowen Li Shuang Xing Xuejie Wang Xiumei Li Minhong Zhang Jinghai Feng |
| author_sort | Yaowen Li |
| collection | DOAJ |
| description | This study was conducted to investigate the effects of increasing stocking density under suitable environmental conditions on the performance and ileal microbiota of broilers. A total of 108 Arbor Acres male broilers (28 days old) were allocated to a normal stocking density (NSD, normal stocking density; 31 kg/m2) and a maximum allowed stocking density group (MSD, maximum stocking density; 39 kg/m2). All birds were reared at a constant temperature of 21°C. At 42 days of age, bacterial DNA was extracted from ileal content, and the V3-4 hypervariable region of 16S rRNA was amplified. Increasing stocking density had no significant effect on average daily gain, average daily feed intake, and feed conversion ratio (P>0.05). The alpha and beta diversities of the ileal microbiomes did not differ significantly between the NSD and MSD groups; however, increasing stocking density altered the composition of ileal microbiota. The relative abundance of Lactobacillales, including Lactobacillus, Enterococcus, and Streptococcus, significantly decreased in MSD broilers, compared with NSD broilers. The present results suggest that even under suitable environmental conditions, an increase in stocking density to a level of 39 kg/m2 may disturb the composition of ileal microbiota in broilers. Further studies are needed to determine the reasons and the potential consequences for animal health and physiology. |
| first_indexed | 2024-03-13T08:47:14Z |
| format | Article |
| id | doaj.art-a0b246382f0a48cd9766902e622b99f7 |
| institution | Directory Open Access Journal |
| issn | 1346-7395 1349-0486 |
| language | English |
| last_indexed | 2024-03-13T08:47:14Z |
| publishDate | 2022-07-01 |
| publisher | Japan Poultry Science Association |
| record_format | Article |
| series | The Journal of Poultry Science |
| spelling | doaj.art-a0b246382f0a48cd9766902e622b99f72023-05-30T00:22:20ZengJapan Poultry Science AssociationThe Journal of Poultry Science1346-73951349-04862022-07-0159329129610.2141/jpsa.0210089jpsaEffects of Increasing Stocking Density on the Performance and Ileal Microbiota of BroilersYaowen Li0Shuang Xing1Xuejie Wang2Xiumei Li3Minhong Zhang4Jinghai Feng5State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural SciencesState Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural SciencesState Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural SciencesState Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural SciencesState Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural SciencesState Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural SciencesThis study was conducted to investigate the effects of increasing stocking density under suitable environmental conditions on the performance and ileal microbiota of broilers. A total of 108 Arbor Acres male broilers (28 days old) were allocated to a normal stocking density (NSD, normal stocking density; 31 kg/m2) and a maximum allowed stocking density group (MSD, maximum stocking density; 39 kg/m2). All birds were reared at a constant temperature of 21°C. At 42 days of age, bacterial DNA was extracted from ileal content, and the V3-4 hypervariable region of 16S rRNA was amplified. Increasing stocking density had no significant effect on average daily gain, average daily feed intake, and feed conversion ratio (P>0.05). The alpha and beta diversities of the ileal microbiomes did not differ significantly between the NSD and MSD groups; however, increasing stocking density altered the composition of ileal microbiota. The relative abundance of Lactobacillales, including Lactobacillus, Enterococcus, and Streptococcus, significantly decreased in MSD broilers, compared with NSD broilers. The present results suggest that even under suitable environmental conditions, an increase in stocking density to a level of 39 kg/m2 may disturb the composition of ileal microbiota in broilers. Further studies are needed to determine the reasons and the potential consequences for animal health and physiology.https://www.jstage.jst.go.jp/article/jpsa/59/3/59_0210089/_pdf/-char/enbroiler chickencommunity structureileal microbiotapyrosequencingstocking density |
| spellingShingle | Yaowen Li Shuang Xing Xuejie Wang Xiumei Li Minhong Zhang Jinghai Feng Effects of Increasing Stocking Density on the Performance and Ileal Microbiota of Broilers The Journal of Poultry Science broiler chicken community structure ileal microbiota pyrosequencing stocking density |
| title | Effects of Increasing Stocking Density on the Performance and Ileal Microbiota of Broilers |
| title_full | Effects of Increasing Stocking Density on the Performance and Ileal Microbiota of Broilers |
| title_fullStr | Effects of Increasing Stocking Density on the Performance and Ileal Microbiota of Broilers |
| title_full_unstemmed | Effects of Increasing Stocking Density on the Performance and Ileal Microbiota of Broilers |
| title_short | Effects of Increasing Stocking Density on the Performance and Ileal Microbiota of Broilers |
| title_sort | effects of increasing stocking density on the performance and ileal microbiota of broilers |
| topic | broiler chicken community structure ileal microbiota pyrosequencing stocking density |
| url | https://www.jstage.jst.go.jp/article/jpsa/59/3/59_0210089/_pdf/-char/en |
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