Plasma amino acid profiles of dairy heifers grazing pasture, chicory and plantain

Innocent Rugoho; Grant Edwards; David Pacheo; Jeffrey McCormick; Chris Logan; Long Cheng

doi:10.1080/00288233.2019.1571518

Plasma amino acid profiles of dairy heifers grazing pasture, chicory and plantain

Innocent Rugoho, Grant Edwards, David Pacheo, Jeffrey McCormick, Chris Logan, Long Cheng

Agricultural, Environmental and Veterinary Sciences

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The objective of this study was to quantify amino acid (AA) profiles in plasma collected from dairy heifers grazing swards containing ryegrass/clover, chicory and plantain in autumn and spring. The study comprised a 28-day autumn trial and a 21-day spring trial using 56 Friesian x Jersey heifers. Total AA concentrations ranged from 2849 to 3165 μM in autumn and from 3195 to 3454 μM in spring, with no treatment effect. Season affected essential AA (EAA) and total AA concentrations. Total plasma AA concentrations were lower in autumn (2965 μM) than in spring (3303 μM). Based on these results, feeding dairy heifer’s either pure chicory, binary mixture or pure plantain does not affect EAA and total AA of Friesian x Jersey heifers. Further, no relationship was established between AA and weight gain of heifers in this study.

Original language	English
Pages (from-to)	138-144
Number of pages	7
Journal	New Zealand Journal of Agricultural Research
Volume	63
Issue number	1
Early online date	03 Feb 2019
DOIs	https://doi.org/10.1080/00288233.2019.1571518
Publication status	Published - 2020

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10.1080/00288233.2019.1571518

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title = "Plasma amino acid profiles of dairy heifers grazing pasture, chicory and plantain",

abstract = "The objective of this study was to quantify amino acid (AA) profiles in plasma collected from dairy heifers grazing swards containing ryegrass/clover, chicory and plantain in autumn and spring. The study comprised a 28-day autumn trial and a 21-day spring trial using 56 Friesian x Jersey heifers. Total AA concentrations ranged from 2849 to 3165 μM in autumn and from 3195 to 3454 μM in spring, with no treatment effect. Season affected essential AA (EAA) and total AA concentrations. Total plasma AA concentrations were lower in autumn (2965 μM) than in spring (3303 μM). Based on these results, feeding dairy heifer{\textquoteright}s either pure chicory, binary mixture or pure plantain does not affect EAA and total AA of Friesian x Jersey heifers. Further, no relationship was established between AA and weight gain of heifers in this study.",

keywords = "Herbal pasture, blood profile, protein metabolism, weight gain",

author = "Innocent Rugoho and Grant Edwards and David Pacheo and Jeffrey McCormick and Chris Logan and Long Cheng",

year = "2020",

doi = "10.1080/00288233.2019.1571518",

language = "English",

volume = "63",

pages = "138--144",

journal = "New Zealand Journal of Agricultural Research",

issn = "0028-8233",

publisher = "Taylor & Francis",

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TY - JOUR

T1 - Plasma amino acid profiles of dairy heifers grazing pasture, chicory and plantain

AU - Rugoho, Innocent

AU - Edwards, Grant

AU - Pacheo, David

AU - McCormick, Jeffrey

AU - Logan, Chris

AU - Cheng, Long

PY - 2020

Y1 - 2020

N2 - The objective of this study was to quantify amino acid (AA) profiles in plasma collected from dairy heifers grazing swards containing ryegrass/clover, chicory and plantain in autumn and spring. The study comprised a 28-day autumn trial and a 21-day spring trial using 56 Friesian x Jersey heifers. Total AA concentrations ranged from 2849 to 3165 μM in autumn and from 3195 to 3454 μM in spring, with no treatment effect. Season affected essential AA (EAA) and total AA concentrations. Total plasma AA concentrations were lower in autumn (2965 μM) than in spring (3303 μM). Based on these results, feeding dairy heifer’s either pure chicory, binary mixture or pure plantain does not affect EAA and total AA of Friesian x Jersey heifers. Further, no relationship was established between AA and weight gain of heifers in this study.

AB - The objective of this study was to quantify amino acid (AA) profiles in plasma collected from dairy heifers grazing swards containing ryegrass/clover, chicory and plantain in autumn and spring. The study comprised a 28-day autumn trial and a 21-day spring trial using 56 Friesian x Jersey heifers. Total AA concentrations ranged from 2849 to 3165 μM in autumn and from 3195 to 3454 μM in spring, with no treatment effect. Season affected essential AA (EAA) and total AA concentrations. Total plasma AA concentrations were lower in autumn (2965 μM) than in spring (3303 μM). Based on these results, feeding dairy heifer’s either pure chicory, binary mixture or pure plantain does not affect EAA and total AA of Friesian x Jersey heifers. Further, no relationship was established between AA and weight gain of heifers in this study.

KW - Herbal pasture

KW - blood profile

KW - protein metabolism

KW - weight gain

U2 - 10.1080/00288233.2019.1571518

DO - 10.1080/00288233.2019.1571518

M3 - Article

SN - 0028-8233

VL - 63

SP - 138

EP - 144

JO - New Zealand Journal of Agricultural Research

JF - New Zealand Journal of Agricultural Research

IS - 1

ER -

Plasma amino acid profiles of dairy heifers grazing pasture, chicory and plantain

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