The Effects on Milk Yield and Composition, and Animal Nitrogen and Phosphorus Status, of Offering Early-Lactation Dairy Cows Concentrate Feeds of Differing Crude Protein and Phosphorus Concentrations

Presenter Information

Michael P. Reid, Teagasc, IrelandFollow
Michael O’Donovan, Teagasc, Ireland
Christopher Elliott, Queens University Belfast, Northern Ireland
John S. Bailey, Agri-Food and Bioscience Institute, Northern Ireland
Catherine J. Watson, Agri-Food and Bioscience Institute, Northern Ireland
Stan T. J. Lalor, Teagasc, Ireland
John Paul Murphy, Teagasc, Ireland
Fergal Coughlan, Teagasc, Ireland
Eva Lewis, Teagasc, Ireland

Publication Date

2013

Location

Sydney, Australia

Description

Milk composition is affected by the dietary concentration of crude protein (CP) (Kung Jr and Huber 1983) and minerals such as phosphorus (P) (Wu and Satter 2000). Milk composition has consequent effects on the processing properties of milk (Dillon et al. 1997). The objective of this study was to determine the effects of offering supplementary concentrate feeds differing in CP and P concentration to lactating dairy cows in the early lactation period (Feb-May) on milk yield and composition, and on animal nitrogen (N) and P status.

Citation

Reid, Michael P.; O’Donovan, Michael; Elliott, Christopher; Bailey, John S.; Watson, Catherine J.; Lalor, Stan T. J.; Murphy, John Paul; Coughlan, Fergal; and Lewis, Eva, "The Effects on Milk Yield and Composition, and Animal Nitrogen and Phosphorus Status, of Offering Early-Lactation Dairy Cows Concentrate Feeds of Differing Crude Protein and Phosphorus Concentrations" (2013). IGC Proceedings (1985-2023). 7.
(URL: https://uknowledge.uky.edu/igc/22/1-8/7)