The effect of grass silage harvesting strategy and concentrate level on feed intake, diet digestibility and milk production of dairy cows
Two experiments were conducted under Northern European conditions to quantify dairy cow responses to variable grass silage quality and concentrate feed supplementation. Experiment 1 included 3 primary growth grass silages (early, intermediate and late maturity stage) supplemented with three concent...
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| Format: | Article |
| Language: | English |
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Scientific Agricultural Society of Finland
2022-09-01
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| Series: | Agricultural and Food Science |
| Online Access: | https://journal.fi/afs/article/view/113471 |
| _version_ | 1798036086756212736 |
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| author | Auvo Sairanen Elina Juutinen Marketta Rinne |
| author_facet | Auvo Sairanen Elina Juutinen Marketta Rinne |
| author_sort | Auvo Sairanen |
| collection | DOAJ |
| description |
Two experiments were conducted under Northern European conditions to quantify dairy cow responses to variable grass silage quality and concentrate feed supplementation. Experiment 1 included 3 primary growth grass silages (early, intermediate and late maturity stage) supplemented with three concentrate levels (9, 12 and 15 kg d-1). Experiment 2 included three consecutive harvests (first, second and third harvest from the same sward within the growing season) and three levels of concentrate supplementation (9, 11 and 13 kg d-1). Dairy cows responded clearly to changes in the harvesting time of silage in primary growth (quadratic effect) and amount of concentrate (linear effect) in the diet in Experiment 1. Milk yield was the lowest with third harvest silage in Experiment 2, and responses to increasing concentrate allowance were linear. Interactions between silage quality and concentrate supplementation were detected in Experiment 1, where milk production responses to additional concentrate decreased with increasing silage digestibility. No interactions were found in Experiment 2, probably due to the small range of differences in nutritional quality between the silages prepared from different harvests. The results demonstrated that it is difficult to compensate for low silage digestibility by increasing the amount of concentrate. The variable ECM response (from –0.01 to 0.85 kg ECM per kg DM incremental concentrate in the diet) is explained by the concomitant decrease in silage intake and negative effect on diet neutral detergent fibre digestibility.
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| first_indexed | 2024-04-11T21:07:43Z |
| format | Article |
| id | doaj.art-38e4f886cfef491494ba5095efa21440 |
| institution | Directory Open Access Journal |
| issn | 1459-6067 1795-1895 |
| language | English |
| last_indexed | 2024-04-11T21:07:43Z |
| publishDate | 2022-09-01 |
| publisher | Scientific Agricultural Society of Finland |
| record_format | Article |
| series | Agricultural and Food Science |
| spelling | doaj.art-38e4f886cfef491494ba5095efa214402022-12-22T04:03:11ZengScientific Agricultural Society of FinlandAgricultural and Food Science1459-60671795-18952022-09-0110.23986/afsci.113471The effect of grass silage harvesting strategy and concentrate level on feed intake, diet digestibility and milk production of dairy cowsAuvo Sairanen0Elina Juutinen1Marketta Rinne2Natural Resources Institute Finland (Luke)Natural Resources Institute Finland (Luke)Natural Resources Institute Finland (Luke) Two experiments were conducted under Northern European conditions to quantify dairy cow responses to variable grass silage quality and concentrate feed supplementation. Experiment 1 included 3 primary growth grass silages (early, intermediate and late maturity stage) supplemented with three concentrate levels (9, 12 and 15 kg d-1). Experiment 2 included three consecutive harvests (first, second and third harvest from the same sward within the growing season) and three levels of concentrate supplementation (9, 11 and 13 kg d-1). Dairy cows responded clearly to changes in the harvesting time of silage in primary growth (quadratic effect) and amount of concentrate (linear effect) in the diet in Experiment 1. Milk yield was the lowest with third harvest silage in Experiment 2, and responses to increasing concentrate allowance were linear. Interactions between silage quality and concentrate supplementation were detected in Experiment 1, where milk production responses to additional concentrate decreased with increasing silage digestibility. No interactions were found in Experiment 2, probably due to the small range of differences in nutritional quality between the silages prepared from different harvests. The results demonstrated that it is difficult to compensate for low silage digestibility by increasing the amount of concentrate. The variable ECM response (from –0.01 to 0.85 kg ECM per kg DM incremental concentrate in the diet) is explained by the concomitant decrease in silage intake and negative effect on diet neutral detergent fibre digestibility. https://journal.fi/afs/article/view/113471 |
| spellingShingle | Auvo Sairanen Elina Juutinen Marketta Rinne The effect of grass silage harvesting strategy and concentrate level on feed intake, diet digestibility and milk production of dairy cows Agricultural and Food Science |
| title | The effect of grass silage harvesting strategy and concentrate level on feed intake, diet digestibility and milk production of dairy cows |
| title_full | The effect of grass silage harvesting strategy and concentrate level on feed intake, diet digestibility and milk production of dairy cows |
| title_fullStr | The effect of grass silage harvesting strategy and concentrate level on feed intake, diet digestibility and milk production of dairy cows |
| title_full_unstemmed | The effect of grass silage harvesting strategy and concentrate level on feed intake, diet digestibility and milk production of dairy cows |
| title_short | The effect of grass silage harvesting strategy and concentrate level on feed intake, diet digestibility and milk production of dairy cows |
| title_sort | effect of grass silage harvesting strategy and concentrate level on feed intake diet digestibility and milk production of dairy cows |
| url | https://journal.fi/afs/article/view/113471 |
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