Home About Browse Search
Svenska


Winter Runoff of Nitrogen and Phosphorus from a Rotational Pen Design with Suckler Cows

Salomon, Eva and Aronsson, Helena and Torstensson, Gunnar and Ulén, Barbro (2015). Winter Runoff of Nitrogen and Phosphorus from a Rotational Pen Design with Suckler Cows. Agricultural sciences. 6, 1248-1261
[Journal article]

[img]
Preview
PDF - Published Version
Available under License Creative Commons Attribution.

1MB

Abstract

Keeping beef cattle outdoors during winter reduces costs and improves animal welfare, but increases
the risk of nitrogen (N) and phosphorus (P) runoff losses. This study evaluated a rotational
pen design on grassland with two groups of suckler cows given access to an expanding
staying area and a new feeding area each week (72 cattle ha−1), with one month’s stay per pen. The
spatial distribution of excreta and effects on N and P surface runoff was evaluated during six
months. The total excreta loads corresponded to 500 kg·N·ha−1 and 50 kg·P·ha−1. New feeding areas
did not distribute excretions evenly, which resulted in the highest proportion of excretions
(31%) occurring in the first week’s sub-area. The topsoil had significantly higher amounts of mineral-N,
mainly as NH4-N (29 - 81 kg·ha−1), than an unaffected area (13 kg·ha−1). Mean total runoff
losses were similar for both groups (1.4 kg·P·ha−1 and 9.0 kg·N·ha−1). Around 78% of N and 70% of
P runoff losses occurred during the month with cattle present. During the first two weeks with
heavy rain, N and P runoff losses were 50% higher from an area with suckler cows than a corresponding
vegetated sub-area without cows. The study design did not provide a sufficient distribution
of excretions and a high animal density in combination with trampling resulted in unacceptable
N and P run-off losses. An environmentally friendly design would need to include frequent
moving of all equipment and access to larger areas.

Authors/Creators:Salomon, Eva and Aronsson, Helena and Torstensson, Gunnar and Ulén, Barbro
Title:Winter Runoff of Nitrogen and Phosphorus from a Rotational Pen Design with Suckler Cows
Series/Journal:Agricultural sciences (2156-8553)
Year of publishing :2015
Volume:6
Page range:1248-1261
Number of Pages:14
Publisher:Scientific Research Publishing
ISSN:2156-8553
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:L Animal production > L01 Animal husbandry
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 402 Animal and Dairy Science > Animal and Dairy Science.
Agrovoc terms:Cattle, Animal housing, Runoff
Keywords:Organic Carbon, Outdoor Pen, Cows, Cattle, Trampling, Surface Runoff
URN:NBN:urn:nbn:se:slu:epsilon-e-3392
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3392
ID Code:13294
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:20 Apr 2016 09:06
Metadata Last Modified:20 Apr 2016 09:06

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits