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ARS Home » Midwest Area » Madison, Wisconsin » U.S. Dairy Forage Research Center » Cell Wall Biology and Utilization Research » Research » Research Project #435051

Research Project: Nutritional Efficiency of Jersey and Holstein Cows

Location: Cell Wall Biology and Utilization Research

Project Number: 5090-31000-026-16-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Sep 10, 2018
End Date: Aug 9, 2021

Objective:
The overall objective of this research is to characterize the feed and nitrogen efficiencies and to evaluate potential differences in nutritional physiology between the genetically diverse, economically important, Holstein and Jersey breeds.

Approach:
Genotyped Holstein and Jersey cows will be fed diets that differ in nutritional composition or protein content. Feed and nitrogen intake and milk production will be evaluated daily. Milk samples for composition will be collected. This information will be used to evaluate feed and nitrogen efficiency in response to the different diets across breeds. Biological samples will be collected at representative times to evaluate possible differential biological responses to nutrition across breeds. Cooperator and ARS will evaluate genomic predicted transmitting ability and its effects on response to nutrition across Holstein and Jersey breeds.