Journal article

There is no relationship between plasma amino acid concentration and urinary nitrogen concentration in heifers fed plantain or ryegrass

Innocent Rugoho, Glenn Judson, Grant Edwards, Long Cheng

NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH | TAYLOR & FRANCIS LTD | Published : 2020

Abstract

The objective of this study was to investigate the relationship between plasma amino acid (AA) concentration and urinary nitrogen (N) concentration of dairy heifers offered cut plantain or perennial ryegrass-white clover pasture indoors. Twelve Jersey-Friesian heifers aged 9–10 months were equally assigned to two dietary treatments (plantain vs. perennial ryegrass-white clover pasture) in a completely randomised design. Urinary N concentration was lower in plantain fed heifers (1.4 g/kg) than in perennial ryegrass-white clover pasture fed heifers (3.4 g/kg). Feeding cut plantain or perennial ryegrass-white clover pasture did not have an effect on either plasma essential AA, non-essential AA ..

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University of Melbourne Researchers