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Impact of manure management in pregnant sows fed ad libitum with diets based on whole crop wheat silage on manure amount and emissions of NH3 and CH4
Authors: Peter Ebertz, Veronika Overmeyer, Wolfgang B?scher
Identifier: CSBE21188
Download file: https://library.csbe-scgab.ca/docs/meetings/2021/CSBE21188.pdf
Published in: CSBE-SCGAB Technical Conferences » 5th CIGR and AGM Quebec City 2021 » Regular Sessions
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Description: Ad libitum feeding of diets rich in crude fibre reduces stereotypies and improves saturation in pregnant sows. In this study we observed this feeding system and its implications on the amount and quality of liquid manure. It results in high requirements for manure management e.g. flushing of manure pits. There is 1.5 times more manure after feeding a non-rationed diet, based on whole crop wheat silage. In addition, thicker floating layers (+ 200%) are formed and the dry matter content of the mixed manure is higher (+ 50%) in comparison to control feeding. Therefore, the manure pits have to be stirred and flushed more frequently as additionally necessary manure management measures. In order to not only consider the daily emissions due to the diet rich in crude fibre, the following will deal with the development of emissions during these additional management measures. Methane emissions doubled during flushing compared to the mean of entire trial period (10 weeks). After flushing, methane emissions decreased by more than two thirds compared to the previous day. Ammonia emissions were also increased (+ 50%) during stirring and flushing. Ad libitum feeding of fibrous diets improves animal welfare. The higher amount of manure, the additional manure management measures and the resulting emissions are in contrast to it and worsen the animal welfare. In this context, there is a conflict of objectives which can be resolved on a farm individual basis. Approaches to this are evaluated in the conference presentation.
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Date: 2021-06-11
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Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: Waste Management 2 - Animal Waste & Treatment
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Type: Text.Abstract
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Publication type: Presentation
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Coverage: Germany
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
DOI:
Description: Ad libitum feeding of diets rich in crude fibre reduces stereotypies and improves saturation in pregnant sows. In this study we observed this feeding system and its implications on the amount and quality of liquid manure. It results in high requirements for manure management e.g. flushing of manure pits. There is 1.5 times more manure after feeding a non-rationed diet, based on whole crop wheat silage. In addition, thicker floating layers (+ 200%) are formed and the dry matter content of the mixed manure is higher (+ 50%) in comparison to control feeding. Therefore, the manure pits have to be stirred and flushed more frequently as additionally necessary manure management measures. In order to not only consider the daily emissions due to the diet rich in crude fibre, the following will deal with the development of emissions during these additional management measures. Methane emissions doubled during flushing compared to the mean of entire trial period (10 weeks). After flushing, methane emissions decreased by more than two thirds compared to the previous day. Ammonia emissions were also increased (+ 50%) during stirring and flushing. Ad libitum feeding of fibrous diets improves animal welfare. The higher amount of manure, the additional manure management measures and the resulting emissions are in contrast to it and worsen the animal welfare. In this context, there is a conflict of objectives which can be resolved on a farm individual basis. Approaches to this are evaluated in the conference presentation.
Keywords:
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2021-06-11
Technical field:
Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: Waste Management 2 - Animal Waste & Treatment
Other information:
Type: Text.Abstract
Format:
Publication type: Presentation
Source:
Relation:
Coverage: Germany
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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