Questionnaire - reducing P losses from dairy enterprises

Questionnaire - reducing P losses from dairy enterprises

Monday, February 4, 2019

Project: Identifying barriers to & facilitators for reducing phosphorus losses from UK dairy farms

The University of Reading, in collaboration with Harper Adams University, is running a
project aiming at investigating the potential to reduce phosphorus (P) losses from dairy farms, with
consequent benefits for the environment and reduction of feeding costs. This project is a PhD
studentship funded by AHDB Dairy.

Phosphorus loss is an important environmental issue: when manure rich in P is applied to land
above the crops’ requirements, the excess P runs off into waterbodies, and contributes to water
pollution, with degradation of quality and reduction in aquatic biodiversity. Over supply of P in feeds increases its
elimination in the dung, making manure even richer in P. This is a costly and unsustainable practice, as
P is a limited global resource. An AHDB-funded survey of UK dairy farms showed that cows are
generally fed, on average, in excess of 20% of the P that is recommended to support optimum production
and health; this excess reaches 30% in early lactating cows. In 2014 DEFRA identified that if we feed
more closely to cow nutrient requirements (including P) the average UK dairy farmer could save £7700
annually. As research has shown overfeeding has no proven benefit but obvious negative
consequences, both economic and environmental, why are we overfeeding phosphorus?

There are three questionnaires

Questionnaire for Farmers:

 Questionnaire for Agronomists / Advisers:

 Questionnaire for Nutritionists:



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