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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

Relative humidity in cold weather (n = 33 trailers) in different compartments of trailer when different levels of bedding are used. (A) Linear change in relative humidity in top front compartment while using 0.6 m3 bedding during cold (P = 0.03, SEb = 0.54). (B) Linear change in relative humidity in bottom front compartment when using 1.2 m3 bedding during cold (P = 0.02, SEb = 0.70). (C) Linear change in relative humidity in top front compartment when using 1.2 m3 bedding during cold (P = 0.01, SEb = 0.84).
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animals-04-00583-f008: Relative humidity in cold weather (n = 33 trailers) in different compartments of trailer when different levels of bedding are used. (A) Linear change in relative humidity in top front compartment while using 0.6 m3 bedding during cold (P = 0.03, SEb = 0.54). (B) Linear change in relative humidity in bottom front compartment when using 1.2 m3 bedding during cold (P = 0.02, SEb = 0.70). (C) Linear change in relative humidity in top front compartment when using 1.2 m3 bedding during cold (P = 0.01, SEb = 0.84).

Mentions: 1 BF = bottom front, BR = bottom rear, TF = top front, TR = top rear compartments. Note: Significant Temperature and relative humidity over time (either linear or quadratic) have been plotted in Figure 7 and Figure 8.


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)

Relative humidity in cold weather (n = 33 trailers) in different compartments of trailer when different levels of bedding are used. (A) Linear change in relative humidity in top front compartment while using 0.6 m3 bedding during cold (P = 0.03, SEb = 0.54). (B) Linear change in relative humidity in bottom front compartment when using 1.2 m3 bedding during cold (P = 0.02, SEb = 0.70). (C) Linear change in relative humidity in top front compartment when using 1.2 m3 bedding during cold (P = 0.01, SEb = 0.84).
© Copyright Policy
Related In: Results  -  Collection

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

animals-04-00583-f008: Relative humidity in cold weather (n = 33 trailers) in different compartments of trailer when different levels of bedding are used. (A) Linear change in relative humidity in top front compartment while using 0.6 m3 bedding during cold (P = 0.03, SEb = 0.54). (B) Linear change in relative humidity in bottom front compartment when using 1.2 m3 bedding during cold (P = 0.02, SEb = 0.70). (C) Linear change in relative humidity in top front compartment when using 1.2 m3 bedding during cold (P = 0.01, SEb = 0.84).
Mentions: 1 BF = bottom front, BR = bottom rear, TF = top front, TR = top rear compartments. Note: Significant Temperature and relative humidity over time (either linear or quadratic) have been plotted in Figure 7 and Figure 8.

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