Feed Preference Response of Weaner Bull Calves to <i>Bacillus amyloliquefaciens</i> H57 Probiotic and Associated Volatile Organic Compounds in High Concentrate Feed Pellets
This study tested the hypothesis that <i>Bacillus amyloliquefaciens</i> strain H57 (H57) improves preference by reducing the development of microbial volatile organic compounds (mVOCs) in feed pellets. Sixteen bull calves were, for 4 weeks, provided equal access to a panel of 8 automated...
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| Format: | Article |
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MDPI AG
2020-12-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/11/1/51 |
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| author | Thi Thuy Ngo Nguyen N. Bang Peter Dart Matthew Callaghan Athol Klieve Ben Hayes David McNeill |
| author_facet | Thi Thuy Ngo Nguyen N. Bang Peter Dart Matthew Callaghan Athol Klieve Ben Hayes David McNeill |
| author_sort | Thi Thuy Ngo |
| collection | DOAJ |
| description | This study tested the hypothesis that <i>Bacillus amyloliquefaciens</i> strain H57 (H57) improves preference by reducing the development of microbial volatile organic compounds (mVOCs) in feed pellets. Sixteen bull calves were, for 4 weeks, provided equal access to a panel of 8 automated feed bunks in a single paddock with some hay. Each bunk contained pellets with (H57) or without (Control) the H57, each aged for 4 months at either ambient or chiller temperature. Each treatment was changed to a new bunk pair position weekly. Relative preference was determined according to weight of pellets remaining per hour per treatment bunk pair per 24 h. Pellets were analysed for volatile organic compounds (VOCs) and the concentrations tested for correlation with relative preference. Calves showed the lowest preference (<i>p</i> < 0.0001) for the Control/Ambient treatment whereas preference for all other treatments (H57/Ambient; H57/Chiller; Control/Chiller) was similar. The Control/Ambient treatment odour profile grouped differently to the other 3 treatments which grouped similarly to each other. Up to 16 mVOCs were determined to have potential as pre-ingestive signals for the extent of microbial spoilage. Further studies are required to find which combination of these mVOCs, when added to pellets, results in feed aversion. |
| first_indexed | 2024-03-10T13:40:55Z |
| format | Article |
| id | doaj.art-af42032630284366906d7f72753d8755 |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-10T13:40:55Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-af42032630284366906d7f72753d87552023-11-21T03:01:35ZengMDPI AGAnimals2076-26152020-12-011115110.3390/ani11010051Feed Preference Response of Weaner Bull Calves to <i>Bacillus amyloliquefaciens</i> H57 Probiotic and Associated Volatile Organic Compounds in High Concentrate Feed PelletsThi Thuy Ngo0Nguyen N. Bang1Peter Dart2Matthew Callaghan3Athol Klieve4Ben Hayes5David McNeill6School of Veterinary Science, The University of Queensland, Gatton, QLD 4343, AustraliaSchool of Veterinary Science, The University of Queensland, Gatton, QLD 4343, AustraliaSchool of Agriculture and Food Sciences, The University of Queensland, Gatton, QLD 4343, AustraliaRidley AgriProducts Pty Ltd., Toowong, QLD 4066, AustraliaQueensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD 4069, AustraliaQueensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD 4069, AustraliaSchool of Veterinary Science, The University of Queensland, Gatton, QLD 4343, AustraliaThis study tested the hypothesis that <i>Bacillus amyloliquefaciens</i> strain H57 (H57) improves preference by reducing the development of microbial volatile organic compounds (mVOCs) in feed pellets. Sixteen bull calves were, for 4 weeks, provided equal access to a panel of 8 automated feed bunks in a single paddock with some hay. Each bunk contained pellets with (H57) or without (Control) the H57, each aged for 4 months at either ambient or chiller temperature. Each treatment was changed to a new bunk pair position weekly. Relative preference was determined according to weight of pellets remaining per hour per treatment bunk pair per 24 h. Pellets were analysed for volatile organic compounds (VOCs) and the concentrations tested for correlation with relative preference. Calves showed the lowest preference (<i>p</i> < 0.0001) for the Control/Ambient treatment whereas preference for all other treatments (H57/Ambient; H57/Chiller; Control/Chiller) was similar. The Control/Ambient treatment odour profile grouped differently to the other 3 treatments which grouped similarly to each other. Up to 16 mVOCs were determined to have potential as pre-ingestive signals for the extent of microbial spoilage. Further studies are required to find which combination of these mVOCs, when added to pellets, results in feed aversion.https://www.mdpi.com/2076-2615/11/1/51microbial volatile organic compoundsodourmicrobial spoilageconcentrate pelletsweaned calf preference |
| spellingShingle | Thi Thuy Ngo Nguyen N. Bang Peter Dart Matthew Callaghan Athol Klieve Ben Hayes David McNeill Feed Preference Response of Weaner Bull Calves to <i>Bacillus amyloliquefaciens</i> H57 Probiotic and Associated Volatile Organic Compounds in High Concentrate Feed Pellets Animals microbial volatile organic compounds odour microbial spoilage concentrate pellets weaned calf preference |
| title | Feed Preference Response of Weaner Bull Calves to <i>Bacillus amyloliquefaciens</i> H57 Probiotic and Associated Volatile Organic Compounds in High Concentrate Feed Pellets |
| title_full | Feed Preference Response of Weaner Bull Calves to <i>Bacillus amyloliquefaciens</i> H57 Probiotic and Associated Volatile Organic Compounds in High Concentrate Feed Pellets |
| title_fullStr | Feed Preference Response of Weaner Bull Calves to <i>Bacillus amyloliquefaciens</i> H57 Probiotic and Associated Volatile Organic Compounds in High Concentrate Feed Pellets |
| title_full_unstemmed | Feed Preference Response of Weaner Bull Calves to <i>Bacillus amyloliquefaciens</i> H57 Probiotic and Associated Volatile Organic Compounds in High Concentrate Feed Pellets |
| title_short | Feed Preference Response of Weaner Bull Calves to <i>Bacillus amyloliquefaciens</i> H57 Probiotic and Associated Volatile Organic Compounds in High Concentrate Feed Pellets |
| title_sort | feed preference response of weaner bull calves to i bacillus amyloliquefaciens i h57 probiotic and associated volatile organic compounds in high concentrate feed pellets |
| topic | microbial volatile organic compounds odour microbial spoilage concentrate pellets weaned calf preference |
| url | https://www.mdpi.com/2076-2615/11/1/51 |
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