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Temperature and Relative Humidity Inside Trailers During Finishing Pig Loading and Transport in Cold and Mild Weather.

McGlone J, Johnson A, Sapkota A, Kephart R - Animals (Basel) (2014)

Bottom Line: In mild weather, internal temperatures were lower when 1.2 m³ or 2.4 m³ of bedding were used during loading and transport compared to 0.6 m³ (P < 0.05).In mild weather, temperature increased linearly in the top front compartment with heavy bedding levels.Excess bedding can absorb more moisture, resulting in transport loss and decreased animal welfare.

View Article: PubMed Central - PubMed

Affiliation: Animal and Food Sciences, Texas Tech University, Lubbock, TX 79409, USA. john.mcglone@ttu.edu.

ABSTRACT
The effect of bedding levels and trailer compartment on internal trailer temperature and relative humidity (RH) during loading and transport of finishing pigs was evaluated in cold and mild weather. Three levels of bedding were used in each experiment: 0.6 m³, 1.2 m³, and 2.4 m³. In mild weather, internal temperatures were lower when 1.2 m³ or 2.4 m³ of bedding were used during loading and transport compared to 0.6 m³ (P < 0.05). Internal trailer temperature increased in a quadratic fashion in the top front compartment when 1.2 m³ was used (P < 0.05), and in a linear fashion in the top rear compartment when 2.4 m³ were used in cold weather (P < 0.05). In mild weather, temperature increased linearly in the top front compartment with heavy bedding levels. Relative humidity increased in a linear fashion in the top front compartment with 0.6 m³, bottom front with 1.2 m³, and top front with 1.2 m³ in cold weather (P < 0.05). In general, temperature and RH increased as bedding levels increased in both cold and mild temperatures. Excess bedding can absorb more moisture, resulting in transport loss and decreased animal welfare.

No MeSH data available.


Related in: MedlinePlus

Overall linear time effect on average internal trailer temperature while loading during cold and mild weather (P < 0.01 and P < 0.01, respectively). Cold SEb = 0.06, n = 33 trailers; Mild SEb = 0.10, n = 21 trailers. Although slopes differed from zero, they did not differ between cold and mild seasons/temperatures (P = 0.56).
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animals-04-00583-f001: Overall linear time effect on average internal trailer temperature while loading during cold and mild weather (P < 0.01 and P < 0.01, respectively). Cold SEb = 0.06, n = 33 trailers; Mild SEb = 0.10, n = 21 trailers. Although slopes differed from zero, they did not differ between cold and mild seasons/temperatures (P = 0.56).

Mentions: Average internal trailer temperature and RH increased linearly over time during loading in cold weather, and the slopes of these did not differ from each other (Figure 1 and Figure 2, respectively; P < 0.05). Trailers increase internal air temperature about 0.1 °C per minute in a linear fashion during loading (Figure 1). Likewise, trailer internal RH increased from 0.13% to 0.22% per minute during loading (Figure 2).


Temperature and Relative Humidity Inside Trailers During Finishing Pig Loading and Transport in Cold and Mild Weather.

McGlone J, Johnson A, Sapkota A, Kephart R - Animals (Basel) (2014)

Overall linear time effect on average internal trailer temperature while loading during cold and mild weather (P < 0.01 and P < 0.01, respectively). Cold SEb = 0.06, n = 33 trailers; Mild SEb = 0.10, n = 21 trailers. Although slopes differed from zero, they did not differ between cold and mild seasons/temperatures (P = 0.56).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4494427&req=5

animals-04-00583-f001: Overall linear time effect on average internal trailer temperature while loading during cold and mild weather (P < 0.01 and P < 0.01, respectively). Cold SEb = 0.06, n = 33 trailers; Mild SEb = 0.10, n = 21 trailers. Although slopes differed from zero, they did not differ between cold and mild seasons/temperatures (P = 0.56).
Mentions: Average internal trailer temperature and RH increased linearly over time during loading in cold weather, and the slopes of these did not differ from each other (Figure 1 and Figure 2, respectively; P < 0.05). Trailers increase internal air temperature about 0.1 °C per minute in a linear fashion during loading (Figure 1). Likewise, trailer internal RH increased from 0.13% to 0.22% per minute during loading (Figure 2).

Bottom Line: In mild weather, internal temperatures were lower when 1.2 m³ or 2.4 m³ of bedding were used during loading and transport compared to 0.6 m³ (P < 0.05).In mild weather, temperature increased linearly in the top front compartment with heavy bedding levels.Excess bedding can absorb more moisture, resulting in transport loss and decreased animal welfare.

View Article: PubMed Central - PubMed

Affiliation: Animal and Food Sciences, Texas Tech University, Lubbock, TX 79409, USA. john.mcglone@ttu.edu.

ABSTRACT
The effect of bedding levels and trailer compartment on internal trailer temperature and relative humidity (RH) during loading and transport of finishing pigs was evaluated in cold and mild weather. Three levels of bedding were used in each experiment: 0.6 m³, 1.2 m³, and 2.4 m³. In mild weather, internal temperatures were lower when 1.2 m³ or 2.4 m³ of bedding were used during loading and transport compared to 0.6 m³ (P < 0.05). Internal trailer temperature increased in a quadratic fashion in the top front compartment when 1.2 m³ was used (P < 0.05), and in a linear fashion in the top rear compartment when 2.4 m³ were used in cold weather (P < 0.05). In mild weather, temperature increased linearly in the top front compartment with heavy bedding levels. Relative humidity increased in a linear fashion in the top front compartment with 0.6 m³, bottom front with 1.2 m³, and top front with 1.2 m³ in cold weather (P < 0.05). In general, temperature and RH increased as bedding levels increased in both cold and mild temperatures. Excess bedding can absorb more moisture, resulting in transport loss and decreased animal welfare.

No MeSH data available.


Related in: MedlinePlus