Aktiviteter pr. år
Abstract
The present study was part of a policy support request
commissioned by the Ministry of Environment and Food of Denmark, focusing on deck
height when transporting weaner pigs on long journeys. Former recommendations
on deck heights have been based on an equation
from Vorup and Barton-Gade (1991) relating live weight and average height based
on 87 pigs (25-160 kg) and 21 sows (130-260 kg), including only 16 pigs in
26-40 kg. Part 1 of the study determined height of pigs weighing approximately 5-40
kg and aimed to establish new or confirm validity of old equations predicting
height from live body weight in this weight interval. Prediction equations were
built using 1435 pigs (47% castrates, 53% females) from 9 Danish herds and
validated on 179 pigs (54% castrates, 46% females) from a 10th herd. The equation
from Vorup and Barton-Gade (1991) systematically overfitted the height of these
pigs, whereas an equation developed by Condotta et al. (2018) using 150 pigs (age
4-20 weeks) predicted equally well as models developed in the present study. Part
2 of the study examined microclimatic conditions during transport of pigs weighing
20-25 kg inside two decks on the truck (deck heights 70 and 90 cm) and two on the
trailer (deck heights 60 and 80 cm). Sixteen journeys for each of 8 and 23 h
duration were done in Denmark from June 2021 to March 2022, ensuring transport
under varying weather conditions. Data consisted of GPS tracking (position and
speed), how much shutters were open (cm), use of mechanical ventilation (0/1),
weather information, temperature from two sensors outside truck and trailer, and
temperature, relative humidity and CO2 from sensors placed inside
each of the 12 compartments, 3 on each deck with pigs. As per contract, results
are not allowed to be revealed before handing in the advisory report to the
ministry in July. In addition to results from part 1, results from analyses of
relations between deck height, microclimate and external factors will be
presented at the symposium and in the proceeding.
Originalsprog | Engelsk |
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Publikationsdato | aug. 2022 |
Status | Udgivet - aug. 2022 |
Begivenhed | Symposium i Anvendt Statistik 2022 - SEGES Innovation, Axelborg, København, Danmark Varighed: 29 aug. 2022 → 31 aug. 2022 Konferencens nummer: 43 http://www.statistiksymposium.dk/ |
Konference
Konference | Symposium i Anvendt Statistik 2022 |
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Nummer | 43 |
Lokation | SEGES Innovation, Axelborg |
Land/Område | Danmark |
By | København |
Periode | 29/08/2022 → 31/08/2022 |
Internetadresse |
Fingeraftryk
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Deck height during transport of weaners – piglet height and microclimatic conditions inside the vehicle
Foldager, L. (Foredragsholder)
30 aug. 2022Aktivitet: Præsentationer, medlemskaber, ejerskab og andre aktiviteter › Foredrag og mundtlige bidrag
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Symposium i Anvendt Statistik 2022
Foldager, L. (Deltager)
29 aug. 2022 → 31 aug. 2022Aktivitet: Deltagelse i eller arrangement af en begivenhed - typer › Deltagelse i eller organisering af konference