Effects of handling intensity and live weight on blood acid-base status in finishing pigs.
作者： D. N. Hamilton , M. Ellis , T. M. Bertol , K. D. Miller
关键词: Venous blood 、 Intensity (physics) 、 Carbon dioxide 、 Randomized block design 、 Bicarbonate 、 Base excess 、 Veterinary medicine 、 Acid–base homeostasis 、 Blood plasma 、 Chemistry
摘要: The objective of this study was to determine the effect live weight on plasma acid-base response pigs subjected various handling intensities. Eighty (equal numbers barrows and gilts) were used in a completely randomized block design with 2 x factorial arrangement following treatments: 1) (light [104 kg] vs. heavy [128 kg]), 2) intensity (low high), 3) gender (barrows gilts). Before test, weighed, venous blood samples taken establish baseline levels, rectal temperature measured. Pigs allowed rest for h before being treatments, which consisted moving through course (12.2 m long 0.91 wide), total eight laps. Animals high-intensity treatment moved rapidly 16 single shocks (two per lap) an electric livestock goad, whereas low-intensity at their own pace using panel paddle. Rectal sample immediately after handling. Blood assayed pH, partial pressure carbon dioxide (PCO ), oxygen (PO saturated (SO (TCO bicarbonate (HCO 3 base excess, lactate. Live had no measurements. After handling, light higher (P < 0.05) SO (65.6 57.2 ± 2.80%) showed greater increase PO from post-handling than (15.6 8.3 2.63 mmHg). Post-handling, high- compared 0.001) lactate (19.1 4.9 0.56 mmol/L) (51.6 36.5 2.44 mmHg) lower TCO (18.6 34.7 0.64 mmol/L), pH (7.02 7.36 0.015), HCO (16.7 33.0 0.62 excess (-14.2 7.5 0.75) values. There effects measurements or temperatures. Results highlight major pig intensity, limited weight, responses
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