Effects of proportion and digestibility of grassclover silage on milk protein, mineral and fatty acid compositions in Danish Holstein cows

Gayani Madushani Sirinayake Lokuge; Marianne Johansen; Peter Lund; Lotte Bach Larsen; Nina Aagaard Poulsen

doi:10.1080/09064702.2023.2248123

Effects of proportion and digestibility of grassclover silage on milk protein, mineral and fatty acid compositions in Danish Holstein cows

Gayani Madushani Sirinayake Lokuge^*, Marianne Johansen, Peter Lund, Lotte Bach Larsen, Nina Aagaard Poulsen

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

Abstract

The objective of this study was to investigate the effects of proportion and organic matter
digestibility (OMD) of grass-clover silage on milk composition. Grass-clover silages with low (LD)
or high (HD) OMD were mixed at low (30:70, LP) or high (70:30, HP) proportion (DM basis) with
maize silage to arrange 4 total mixed rations (TMR) with a forage-to-concentrate ratio of 60:40.
The TMR were fed ad libitum to 36 cows in a 4 × 4 Complete Latin Square design. The
proportion × OMD interaction showed that feeding a high proportion of low-digestible grassclover
silage resulted in a higher content of milk urea nitrogen (P < .001). The diets had a minor
impact on milk protein and mineral compositions. Decreasing the grass-clover to maize silage
ratio from 70:30 to 30:70 improved the nutritional value of milk fat by decreasing the share of
saturated and increased the share of unsaturated fatty acids (P < .001).

Original language	English
Journal	Acta Agriculturae Scandinavica, Section A - Animal Science
Volume	72
Issue	3-4
Pages (from-to)	123-134
Number of pages	12
ISSN	0906-4702
DOIs	https://doi.org/10.1080/09064702.2023.2248123
Publication status	Published - 2023

Keywords

Grass-clover silage
fatty acids
milk minerals
milk urea nitrogen
organic matter digestibility

Access to Document

10.1080/09064702.2023.2248123

Cite this

@article{62702836d53d4275b2d55ea4aae03315,

title = "Effects of proportion and digestibility of grassclover silage on milk protein, mineral and fatty acid compositions in Danish Holstein cows",

abstract = "The objective of this study was to investigate the effects of proportion and organic matterdigestibility (OMD) of grass-clover silage on milk composition. Grass-clover silages with low (LD)or high (HD) OMD were mixed at low (30:70, LP) or high (70:30, HP) proportion (DM basis) withmaize silage to arrange 4 total mixed rations (TMR) with a forage-to-concentrate ratio of 60:40.The TMR were fed ad libitum to 36 cows in a 4 × 4 Complete Latin Square design. Theproportion × OMD interaction showed that feeding a high proportion of low-digestible grasscloversilage resulted in a higher content of milk urea nitrogen (P < .001). The diets had a minorimpact on milk protein and mineral compositions. Decreasing the grass-clover to maize silageratio from 70:30 to 30:70 improved the nutritional value of milk fat by decreasing the share ofsaturated and increased the share of unsaturated fatty acids (P < .001).",

keywords = "Grass-clover silage, fatty acids, milk minerals, milk urea nitrogen, organic matter digestibility",

author = "{Sirinayake Lokuge}, {Gayani Madushani} and Marianne Johansen and Peter Lund and Larsen, {Lotte Bach} and Poulsen, {Nina Aagaard}",

year = "2023",

doi = "10.1080/09064702.2023.2248123",

language = "English",

volume = "72",

pages = "123--134",

journal = "Acta Agriculturae Scandinavica, Section A - Animal Science",

issn = "0906-4702",

publisher = "Taylor & Francis",

number = "3-4",

}

Effects of proportion and digestibility of grassclover silage on milk protein, mineral and fatty acid compositions in Danish Holstein cows. / Sirinayake Lokuge, Gayani Madushani ; Johansen, Marianne ; Lund, Peter et al.
In: Acta Agriculturae Scandinavica, Section A - Animal Science, Vol. 72, No. 3-4, 2023, p. 123-134.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - Effects of proportion and digestibility of grassclover silage on milk protein, mineral and fatty acid compositions in Danish Holstein cows

AU - Sirinayake Lokuge, Gayani Madushani

AU - Johansen, Marianne

AU - Lund, Peter

AU - Larsen, Lotte Bach

AU - Poulsen, Nina Aagaard

PY - 2023

Y1 - 2023

N2 - The objective of this study was to investigate the effects of proportion and organic matterdigestibility (OMD) of grass-clover silage on milk composition. Grass-clover silages with low (LD)or high (HD) OMD were mixed at low (30:70, LP) or high (70:30, HP) proportion (DM basis) withmaize silage to arrange 4 total mixed rations (TMR) with a forage-to-concentrate ratio of 60:40.The TMR were fed ad libitum to 36 cows in a 4 × 4 Complete Latin Square design. Theproportion × OMD interaction showed that feeding a high proportion of low-digestible grasscloversilage resulted in a higher content of milk urea nitrogen (P < .001). The diets had a minorimpact on milk protein and mineral compositions. Decreasing the grass-clover to maize silageratio from 70:30 to 30:70 improved the nutritional value of milk fat by decreasing the share ofsaturated and increased the share of unsaturated fatty acids (P < .001).

AB - The objective of this study was to investigate the effects of proportion and organic matterdigestibility (OMD) of grass-clover silage on milk composition. Grass-clover silages with low (LD)or high (HD) OMD were mixed at low (30:70, LP) or high (70:30, HP) proportion (DM basis) withmaize silage to arrange 4 total mixed rations (TMR) with a forage-to-concentrate ratio of 60:40.The TMR were fed ad libitum to 36 cows in a 4 × 4 Complete Latin Square design. Theproportion × OMD interaction showed that feeding a high proportion of low-digestible grasscloversilage resulted in a higher content of milk urea nitrogen (P < .001). The diets had a minorimpact on milk protein and mineral compositions. Decreasing the grass-clover to maize silageratio from 70:30 to 30:70 improved the nutritional value of milk fat by decreasing the share ofsaturated and increased the share of unsaturated fatty acids (P < .001).

KW - Grass-clover silage

KW - fatty acids

KW - milk minerals

KW - milk urea nitrogen

KW - organic matter digestibility

UR - http://www.scopus.com/inward/record.url?scp=85168322441&partnerID=8YFLogxK

U2 - 10.1080/09064702.2023.2248123

DO - 10.1080/09064702.2023.2248123

M3 - Journal article

SN - 0906-4702

VL - 72

SP - 123

EP - 134

JO - Acta Agriculturae Scandinavica, Section A - Animal Science

JF - Acta Agriculturae Scandinavica, Section A - Animal Science

IS - 3-4

ER -

Effects of proportion and digestibility of grassclover silage on milk protein, mineral and fatty acid compositions in Danish Holstein cows

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this