Influence of Supplemental Feed Choice for Pasture-Based Cows on the Fatty Acid and Volatile Profile of Milk
The purpose of this study was to examine the impact of a variety of supplemental feeds on the composition and quality of milk in a pasture-based dairy system. Four pasture-supplemented feeding systems were compared: Group 1 supplementation with 16% crude protein parlour concentrate (CONC); Group 2 s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-04-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/8/4/137 |
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| author | Tom F. O’Callaghan David Mannion Diana Apopei Noel A. McCarthy Sean A. Hogan Kieran N. Kilcawley Michael Egan |
| author_facet | Tom F. O’Callaghan David Mannion Diana Apopei Noel A. McCarthy Sean A. Hogan Kieran N. Kilcawley Michael Egan |
| author_sort | Tom F. O’Callaghan |
| collection | DOAJ |
| description | The purpose of this study was to examine the impact of a variety of supplemental feeds on the composition and quality of milk in a pasture-based dairy system. Four pasture-supplemented feeding systems were compared: Group 1 supplementation with 16% crude protein parlour concentrate (CONC); Group 2 supplementation with palm kernel expeller plus parlour concentrate (PKE); Group 3 supplemented with soya hulls plus parlour concentrate (SOYA); Group 4 was supplemented with molassed beet pulp plus parlour concentrate (BEET). Supplemental feeding system was demonstrated to have a significant effect on the size of native casein micelles and the gelation properties of milks. While CONC feeding produced significantly higher casein micelle size, gel strength (Young’s Modulus) was significantly negatively correlated with casein micelle size. Supplemental feeding system had a significant effect on a number of fatty acids (FA) and indices derived therefrom, including total saturated and unsaturated fatty acids, <i>de novo</i> produced FA, omega 3, and omega 6 FA. The volatile profile of milks was also affected by supplemental feed choice, whereby multivariate analysis demonstrated that the CONC diet was distinctly different to that of the PALM, SOYA, and BEET milks. Multivariate analysis demonstrated that it is possible to distinguish milks from different pasture-supplemented feeding systems by their FA profile. |
| first_indexed | 2024-12-21T09:04:00Z |
| format | Article |
| id | doaj.art-771996ac592649049486b7a5fe37f654 |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-12-21T09:04:00Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-771996ac592649049486b7a5fe37f6542022-12-21T19:09:25ZengMDPI AGFoods2304-81582019-04-018413710.3390/foods8040137foods8040137Influence of Supplemental Feed Choice for Pasture-Based Cows on the Fatty Acid and Volatile Profile of MilkTom F. O’Callaghan0David Mannion1Diana Apopei2Noel A. McCarthy3Sean A. Hogan4Kieran N. Kilcawley5Michael Egan6Food Chemistry and Technology, Teagasc Moorepark Food Research Center, Moorepark Fermoy, P61 C996 Co. Cork, IrelandFood Chemistry and Technology, Teagasc Moorepark Food Research Center, Moorepark Fermoy, P61 C996 Co. Cork, IrelandFood Chemistry and Technology, Teagasc Moorepark Food Research Center, Moorepark Fermoy, P61 C996 Co. Cork, IrelandFood Chemistry and Technology, Teagasc Moorepark Food Research Center, Moorepark Fermoy, P61 C996 Co. Cork, IrelandFood Chemistry and Technology, Teagasc Moorepark Food Research Center, Moorepark Fermoy, P61 C996 Co. Cork, IrelandFood Chemistry and Technology, Teagasc Moorepark Food Research Center, Moorepark Fermoy, P61 C996 Co. Cork, IrelandTeagasc Animal and Grassland Research, Moorepark Fermoy, P61 C996 Co. Cork, IrelandThe purpose of this study was to examine the impact of a variety of supplemental feeds on the composition and quality of milk in a pasture-based dairy system. Four pasture-supplemented feeding systems were compared: Group 1 supplementation with 16% crude protein parlour concentrate (CONC); Group 2 supplementation with palm kernel expeller plus parlour concentrate (PKE); Group 3 supplemented with soya hulls plus parlour concentrate (SOYA); Group 4 was supplemented with molassed beet pulp plus parlour concentrate (BEET). Supplemental feeding system was demonstrated to have a significant effect on the size of native casein micelles and the gelation properties of milks. While CONC feeding produced significantly higher casein micelle size, gel strength (Young’s Modulus) was significantly negatively correlated with casein micelle size. Supplemental feeding system had a significant effect on a number of fatty acids (FA) and indices derived therefrom, including total saturated and unsaturated fatty acids, <i>de novo</i> produced FA, omega 3, and omega 6 FA. The volatile profile of milks was also affected by supplemental feed choice, whereby multivariate analysis demonstrated that the CONC diet was distinctly different to that of the PALM, SOYA, and BEET milks. Multivariate analysis demonstrated that it is possible to distinguish milks from different pasture-supplemented feeding systems by their FA profile.https://www.mdpi.com/2304-8158/8/4/137dairyfatty acidspasturefeed supplementsmilk compositioncow diet |
| spellingShingle | Tom F. O’Callaghan David Mannion Diana Apopei Noel A. McCarthy Sean A. Hogan Kieran N. Kilcawley Michael Egan Influence of Supplemental Feed Choice for Pasture-Based Cows on the Fatty Acid and Volatile Profile of Milk Foods dairy fatty acids pasture feed supplements milk composition cow diet |
| title | Influence of Supplemental Feed Choice for Pasture-Based Cows on the Fatty Acid and Volatile Profile of Milk |
| title_full | Influence of Supplemental Feed Choice for Pasture-Based Cows on the Fatty Acid and Volatile Profile of Milk |
| title_fullStr | Influence of Supplemental Feed Choice for Pasture-Based Cows on the Fatty Acid and Volatile Profile of Milk |
| title_full_unstemmed | Influence of Supplemental Feed Choice for Pasture-Based Cows on the Fatty Acid and Volatile Profile of Milk |
| title_short | Influence of Supplemental Feed Choice for Pasture-Based Cows on the Fatty Acid and Volatile Profile of Milk |
| title_sort | influence of supplemental feed choice for pasture based cows on the fatty acid and volatile profile of milk |
| topic | dairy fatty acids pasture feed supplements milk composition cow diet |
| url | https://www.mdpi.com/2304-8158/8/4/137 |
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