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Welfare of Pigs Being Transported over Long Distances Using a Pot-Belly Trailer during Winter and Summer.

Correa JA, Gonyou H, Torrey S, Widowski T, Bergeron R, Crowe T, Laforest JP, Faucitano L - Animals (Basel) (2014)

Bottom Line: Meat quality was evaluated in the Longissimus thoracis (LT), Semimembranosus (SM) and Adductor (AD) muscles.Blood lactate and CK concentrations were higher (P < 0.001) in winter than in summer.This study confirms that some locations within the PB trailer have a negative impact on the welfare of pigs at loading and during transport with more pronounced effects in the winter due to the additive effect of cold stress.

View Article: PubMed Central - PubMed

Affiliation: Inc., Ange Gardien, QC, J0E 1E0, Canada. Jean-Paul.Laforest@fsaa.ulaval.ca.

ABSTRACT
A total of 2,145 pigs were transported for 8 h in summer (six trips) and winter (five trips) using a pot-belly trailer accommodating pigs in four locations (upper deck or UD, bottom-nose or BN, middle deck or MD and bottom deck or BD). Heart rate of pigs during loading and transportation and lactate and creatine kinase (CK) concentrations in exsanguination blood were measured. Meat quality was evaluated in the Longissimus thoracis (LT), Semimembranosus (SM) and Adductor (AD) muscles. During summer, pigs loaded in the UD and MD had higher (P < 0.05) heart rate at loading compared to those located in the BD and BN. Blood lactate and CK concentrations were higher (P < 0.001) in winter than in summer. Lactate concentration was higher (P = 0.01) in the blood of pigs transported in the BN. Pigs transported in the BN had higher pHu values in the LT, SM and AD muscles (P = 0.02, P < 0.001 and P = 0.002, respectively) and lower (P = 0.002) drip loss values in the SM muscle. This study confirms that some locations within the PB trailer have a negative impact on the welfare of pigs at loading and during transport with more pronounced effects in the winter due to the additive effect of cold stress.

No MeSH data available.


Related in: MedlinePlus

The location of compartments and distribution of pigs by compartment in the pot-belly trailer. Internal ramps are solid lines in compartments 5, 8, and 10.
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animals-04-00200-f001: The location of compartments and distribution of pigs by compartment in the pot-belly trailer. Internal ramps are solid lines in compartments 5, 8, and 10.

Mentions: Pigs were transported in 5 weeks in winter and 6 weeks in summer, in terms of one load of 195 pigs per week in each season, at an average density of 0.42 and 0.41 m2/pig, respectively. During the experiment, the transport schedules changed between the seasons to concur with the current transport practices of the region. In summer, the transporter only had two short stops (15 and 30 min each) after an initial transport phase of 190 min. These stops were considered short enough to protect pigs from the temperature and humidity rise inside a stationary PB trailer [11]. In winter, the transporter only had a single stop, lasting 180 min, before continuing the journey to the abattoir. Pigs were transported on three decks and distributed into 9 out of 10 compartments (four on the upper deck, three in the middle deck and two in the bottom deck of the vehicle; Figure 1). Compartment 6 was not filled due to load limitations. The trailer included three internal ramps: a 22° ramp going to the upper level (compartments 1, 2, 3 and 4), a 32° ramp going to compartment 5 (“bottom-nose” or BN), and a 22° ramp giving access to the bottom level (compartments 9 and 10; Figure 1). The trailer was bedded with wood shavings in the summer and straw and wood shavings in the winter. The side panels were open 100% in the summer, but only 10% in the winter. The trailer compartments were loaded in the following order: 5, 1, 2, 4, 3, 9, 10, 7, and 8. At loading, pigs were moved along an alley, up the chute into the trailer and then through ramps in groups of four or five using boards and the electric prod as necessary. The loading crew did not change between seasons.


Welfare of Pigs Being Transported over Long Distances Using a Pot-Belly Trailer during Winter and Summer.

Correa JA, Gonyou H, Torrey S, Widowski T, Bergeron R, Crowe T, Laforest JP, Faucitano L - Animals (Basel) (2014)

The location of compartments and distribution of pigs by compartment in the pot-belly trailer. Internal ramps are solid lines in compartments 5, 8, and 10.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4494372&req=5

animals-04-00200-f001: The location of compartments and distribution of pigs by compartment in the pot-belly trailer. Internal ramps are solid lines in compartments 5, 8, and 10.
Mentions: Pigs were transported in 5 weeks in winter and 6 weeks in summer, in terms of one load of 195 pigs per week in each season, at an average density of 0.42 and 0.41 m2/pig, respectively. During the experiment, the transport schedules changed between the seasons to concur with the current transport practices of the region. In summer, the transporter only had two short stops (15 and 30 min each) after an initial transport phase of 190 min. These stops were considered short enough to protect pigs from the temperature and humidity rise inside a stationary PB trailer [11]. In winter, the transporter only had a single stop, lasting 180 min, before continuing the journey to the abattoir. Pigs were transported on three decks and distributed into 9 out of 10 compartments (four on the upper deck, three in the middle deck and two in the bottom deck of the vehicle; Figure 1). Compartment 6 was not filled due to load limitations. The trailer included three internal ramps: a 22° ramp going to the upper level (compartments 1, 2, 3 and 4), a 32° ramp going to compartment 5 (“bottom-nose” or BN), and a 22° ramp giving access to the bottom level (compartments 9 and 10; Figure 1). The trailer was bedded with wood shavings in the summer and straw and wood shavings in the winter. The side panels were open 100% in the summer, but only 10% in the winter. The trailer compartments were loaded in the following order: 5, 1, 2, 4, 3, 9, 10, 7, and 8. At loading, pigs were moved along an alley, up the chute into the trailer and then through ramps in groups of four or five using boards and the electric prod as necessary. The loading crew did not change between seasons.

Bottom Line: Meat quality was evaluated in the Longissimus thoracis (LT), Semimembranosus (SM) and Adductor (AD) muscles.Blood lactate and CK concentrations were higher (P < 0.001) in winter than in summer.This study confirms that some locations within the PB trailer have a negative impact on the welfare of pigs at loading and during transport with more pronounced effects in the winter due to the additive effect of cold stress.

View Article: PubMed Central - PubMed

Affiliation: Inc., Ange Gardien, QC, J0E 1E0, Canada. Jean-Paul.Laforest@fsaa.ulaval.ca.

ABSTRACT
A total of 2,145 pigs were transported for 8 h in summer (six trips) and winter (five trips) using a pot-belly trailer accommodating pigs in four locations (upper deck or UD, bottom-nose or BN, middle deck or MD and bottom deck or BD). Heart rate of pigs during loading and transportation and lactate and creatine kinase (CK) concentrations in exsanguination blood were measured. Meat quality was evaluated in the Longissimus thoracis (LT), Semimembranosus (SM) and Adductor (AD) muscles. During summer, pigs loaded in the UD and MD had higher (P < 0.05) heart rate at loading compared to those located in the BD and BN. Blood lactate and CK concentrations were higher (P < 0.001) in winter than in summer. Lactate concentration was higher (P = 0.01) in the blood of pigs transported in the BN. Pigs transported in the BN had higher pHu values in the LT, SM and AD muscles (P = 0.02, P < 0.001 and P = 0.002, respectively) and lower (P = 0.002) drip loss values in the SM muscle. This study confirms that some locations within the PB trailer have a negative impact on the welfare of pigs at loading and during transport with more pronounced effects in the winter due to the additive effect of cold stress.

No MeSH data available.


Related in: MedlinePlus