Markers for cow longevity
This project involved collecting blood samples from 30 dairy farms (15 pasture-based and 15 TMR farms) including dry cows and cows in a range of stages of lactation. Results indicate that reduced levels of the omega-3 fatty acid, DHA (docosahexaenoic acid) in older cows, might be a significant factor in increasing susceptibility to adverse health events, reduced reproductive performance, and herd removal. Further research is needed to determine if feeding diets rich in DHA could increase longevity of dairy cows.
Read the journal article David B Sheedy et al (2024) A large, multi-site lipidomic investigation of parity and aging in dairy cows. Journal of Dairy Science, 6 December 2024.
About Dairy UP
Dairy UP is a collaborative research, development and extension program for the NSW dairy industry. It aims to unlock the potential of pastures, cows, water and milk to increase productivity and profitability, and de-risk the industry and develop new markets.