The relationship between plasma 3-methylhistidine concentration and forage intake in early lactating dairy cows

K. Sawada, K. Nagano, Naoki Nishino

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Plasma 3-MH and amino acids were measured in high yielding dairy cows between one week prepartum and four weeks postpartum to evaluate the relationship between these parameters and forage intake. Cows received low forage or high forage content after calving with the same crude protein (CP), 17% (11% rumen-degradable protein; 6% rumen-undegradable protein) in the diets. Nine cows received a control (CON) diet (35% forage; 12% forage neutral detergent fiber (NDF)) and five cows received a low-forage (LF) diet (25% forage; 7% forage NDF). Plasma 3-methylhistidine concentration at four weeks after parturition was significantly higher in LF than CON cows (9.1 vs. 5.1μM). Plasma urea concentrations were significantly higher in LF cows than in CON cows, ranging from 3.71 to 7.33. mM and 2.78 to 4.98. mM, respectively. Plasma methionine remained at a significantly lower level in LF, ranging from 17.5 to 24.1μM, compared with CON cows ranging from 26.6 to 39.5μM during the entire experimental period. Other amino acids were not affected by the LF diet but they decreased significantly towards parturition and returned to precalving levels by 4. weeks postcalving, except for leucine, glutamic acid, histidine and aspartic acid. Milk performance was not significantly different between the groups. The results indicate that a LF diet affects later plasma 3-MH increase, indicating the extension of body protein mobilization, which is commonly observed in early lactating dairy cows.

Original languageEnglish
Pages (from-to)278-282
Number of pages5
JournalLivestock Science
Volume143
Issue number2-3
DOIs
Publication statusPublished - Feb 2012

Fingerprint

dairy cows
feed intake
forage
Diet
Rumen
Detergents
cows
Proteins
Parturition
Amino Acids
Histidine
Aspartic Acid
Leucine
Methionine
Postpartum Period
Urea
Glutamic Acid
Milk
diet
neutral detergent fiber

Keywords

  • 3-Methylhistidine
  • Forage
  • Myofibrillar protein
  • Transition

ASJC Scopus subject areas

  • Animal Science and Zoology
  • veterinary(all)

Cite this

The relationship between plasma 3-methylhistidine concentration and forage intake in early lactating dairy cows. / Sawada, K.; Nagano, K.; Nishino, Naoki.

In: Livestock Science, Vol. 143, No. 2-3, 02.2012, p. 278-282.

Research output: Contribution to journalArticle

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