| Autor: |
M. J. Ritter, Kenneth J. Stalder, Leah Gesing, Anna K. Johnson, Joshua T. Selsby, C. Feuerbach, A. Whiley, M. Faga, H. Hill, R. Bailey |
| Rok vydání: |
2010 |
| Předmět: |
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| Zdroj: |
The Professional Animal Scientist. 26:603-610 |
| ISSN: |
1080-7446 |
| DOI: |
10.15232/s1080-7446(15)30657-4 |
| Popis: |
The objective of this study was to determine the effects of presorting before loading on stress responses and transport losses at the slaughter facility in the market-weight pig. A total of 5,802 pigs (n = 33 loads) were used in a randomized complete block design with 2 treatments. The presorted (PRE) and not presorted (NON) treatments each had 292 pigs/pen (0.65 m2/pig). For the PRE treatment, internal swing gates were used to presort pigs manually 18 h before loading, whereas pigs in the NON treatment were sorted from pen mates at the time of marketing. Treatments were assigned to trailer decks in an alternating manner. Data were analyzed using generalized linear mixed model methodology, and loading time was analyzed using mixed model procedures. Loading time differed (P 0.05) different. There were no (P > 0.05) differences between treatments for total losses at the slaughter facility. Two pigs in the PRE treatment and zero pigs in the NON treatment were classified as dead on arrival. In conclusion, presorting market-weight pigs reduced loading time and some stress responses on farm; however, no treatment differences were observed for stress responses or transport losses at the slaughter facility. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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