Long-Term and Carryover Effects of Supplementation with Whole Oilseeds on Methane Emission, Milk Production and Milk Fatty Acid Profile of Grazing Dairy Cows
Research is ongoing to find nutritional methane (CH<sub>4</sub>) mitigation strategies with persistent effects that can be applied to grazing ruminants. Lipid addition to dairy cow diets has shown potential as means to decrease CH<sub>4</sub> emissions. This study evaluated t...
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MDPI AG
2021-10-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/11/10/2978 |
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| author | Camila Muñoz Rodrigo Villalobos Alejandra María Teresa Peralta Rodrigo Morales Natalie Louise Urrutia Emilio Mauricio Ungerfeld |
| author_facet | Camila Muñoz Rodrigo Villalobos Alejandra María Teresa Peralta Rodrigo Morales Natalie Louise Urrutia Emilio Mauricio Ungerfeld |
| author_sort | Camila Muñoz |
| collection | DOAJ |
| description | Research is ongoing to find nutritional methane (CH<sub>4</sub>) mitigation strategies with persistent effects that can be applied to grazing ruminants. Lipid addition to dairy cow diets has shown potential as means to decrease CH<sub>4</sub> emissions. This study evaluated the effects of oilseeds on CH<sub>4</sub> emission and production performance of grazing lactating dairy cows. Sixty Holstein Friesian cows grazing pasture were randomly allocated to 1 of 4 treatments (<i>n</i> = 15): supplemented with concentrate without oilseeds (CON), with whole cottonseed (CTS), rapeseed (RPS) or linseed (LNS). Oilseeds were supplemented during weeks 1–16 (spring period) and 17–22 (summer period), and the autumn period (wk 23–27) was used to evaluate treatment carryover effects. Cows fed CTS decreased CH<sub>4</sub> yield by 14% compared to CON in spring, but these effects did not persist after 19 weeks of supplementation (summer). Compared to CON, RPS decreased milk yield and CTS increased milk fat concentration in both spring and summer. In summer, CTS also increased milk protein concentration but decreased milk yield, compared to CON. In spring, compared to CON, CTS decreased most milk medium-chain fatty acids (FA; 8:0, 12:0, 14:0 and 15:0) and increased stearic, linoleic and rumenic FA, and LNS increased CLA FA. There were no carry-over effects into the autumn period. In conclusion, supplementation of grazing dairy cows with whole oilseeds resulted in mild effects on methane emissions and animal performance. In particular, supplementing with CTS can decrease CH<sub>4</sub> yield without affecting milk production, albeit with a mild and transient CH<sub>4</sub> decrease effect. Long term studies conducted under grazing conditions are important to provide a comprehensive overview of how proposed nutritional CH<sub>4</sub> mitigation strategies affect productivity, sustainability and consumer health aspects. |
| first_indexed | 2024-03-10T06:46:21Z |
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| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-10T06:46:21Z |
| publishDate | 2021-10-01 |
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| series | Animals |
| spelling | doaj.art-7d7f6db949ed443bac0b9f24c18ce8762023-11-22T17:12:11ZengMDPI AGAnimals2076-26152021-10-011110297810.3390/ani11102978Long-Term and Carryover Effects of Supplementation with Whole Oilseeds on Methane Emission, Milk Production and Milk Fatty Acid Profile of Grazing Dairy CowsCamila Muñoz0Rodrigo Villalobos1Alejandra María Teresa Peralta2Rodrigo Morales3Natalie Louise Urrutia4Emilio Mauricio Ungerfeld5Instituto de Investigaciones Agropecuarias, INIA Remehue, Osorno 5290000, ChileFacultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santiago 8820808, ChileInstituto de Investigaciones Agropecuarias, INIA Remehue, Osorno 5290000, ChileInstituto de Investigaciones Agropecuarias, INIA Remehue, Osorno 5290000, ChileInstituto de Investigaciones Agropecuarias, INIA Remehue, Osorno 5290000, ChileInstituto de Investigaciones Agropecuarias, INIA Carillanca, Temuco 4880000, ChileResearch is ongoing to find nutritional methane (CH<sub>4</sub>) mitigation strategies with persistent effects that can be applied to grazing ruminants. Lipid addition to dairy cow diets has shown potential as means to decrease CH<sub>4</sub> emissions. This study evaluated the effects of oilseeds on CH<sub>4</sub> emission and production performance of grazing lactating dairy cows. Sixty Holstein Friesian cows grazing pasture were randomly allocated to 1 of 4 treatments (<i>n</i> = 15): supplemented with concentrate without oilseeds (CON), with whole cottonseed (CTS), rapeseed (RPS) or linseed (LNS). Oilseeds were supplemented during weeks 1–16 (spring period) and 17–22 (summer period), and the autumn period (wk 23–27) was used to evaluate treatment carryover effects. Cows fed CTS decreased CH<sub>4</sub> yield by 14% compared to CON in spring, but these effects did not persist after 19 weeks of supplementation (summer). Compared to CON, RPS decreased milk yield and CTS increased milk fat concentration in both spring and summer. In summer, CTS also increased milk protein concentration but decreased milk yield, compared to CON. In spring, compared to CON, CTS decreased most milk medium-chain fatty acids (FA; 8:0, 12:0, 14:0 and 15:0) and increased stearic, linoleic and rumenic FA, and LNS increased CLA FA. There were no carry-over effects into the autumn period. In conclusion, supplementation of grazing dairy cows with whole oilseeds resulted in mild effects on methane emissions and animal performance. In particular, supplementing with CTS can decrease CH<sub>4</sub> yield without affecting milk production, albeit with a mild and transient CH<sub>4</sub> decrease effect. Long term studies conducted under grazing conditions are important to provide a comprehensive overview of how proposed nutritional CH<sub>4</sub> mitigation strategies affect productivity, sustainability and consumer health aspects.https://www.mdpi.com/2076-2615/11/10/2978oilseedcottonseedmethanegrazingmilk fatty acid profilecarryover |
| spellingShingle | Camila Muñoz Rodrigo Villalobos Alejandra María Teresa Peralta Rodrigo Morales Natalie Louise Urrutia Emilio Mauricio Ungerfeld Long-Term and Carryover Effects of Supplementation with Whole Oilseeds on Methane Emission, Milk Production and Milk Fatty Acid Profile of Grazing Dairy Cows Animals oilseed cottonseed methane grazing milk fatty acid profile carryover |
| title | Long-Term and Carryover Effects of Supplementation with Whole Oilseeds on Methane Emission, Milk Production and Milk Fatty Acid Profile of Grazing Dairy Cows |
| title_full | Long-Term and Carryover Effects of Supplementation with Whole Oilseeds on Methane Emission, Milk Production and Milk Fatty Acid Profile of Grazing Dairy Cows |
| title_fullStr | Long-Term and Carryover Effects of Supplementation with Whole Oilseeds on Methane Emission, Milk Production and Milk Fatty Acid Profile of Grazing Dairy Cows |
| title_full_unstemmed | Long-Term and Carryover Effects of Supplementation with Whole Oilseeds on Methane Emission, Milk Production and Milk Fatty Acid Profile of Grazing Dairy Cows |
| title_short | Long-Term and Carryover Effects of Supplementation with Whole Oilseeds on Methane Emission, Milk Production and Milk Fatty Acid Profile of Grazing Dairy Cows |
| title_sort | long term and carryover effects of supplementation with whole oilseeds on methane emission milk production and milk fatty acid profile of grazing dairy cows |
| topic | oilseed cottonseed methane grazing milk fatty acid profile carryover |
| url | https://www.mdpi.com/2076-2615/11/10/2978 |
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