|
KMID : 1024620050250010066
|
|
Food Science of Animal Resources
2005 Volume.25 No. 1 p.66 ~ p.70
|
|
|
The Effects of Dietary Supplement on Serum Stress Hormones Concentrations and Pork Quality in Late Finishing Pigs
|
|
Seong Pil-Nam
Lee Chong-Eon
Cho In-Cheol
|
|
|
Abstract
|
|
|
|
This study was conducted to determine the effects of MgSO₄ supplement on meat quality and serum stress hormones concentrations in late finishing pigs. Sixty castrated Landrace pigs (average weight±S.D., 106.5±8.9 kg) were assigned to a control diet (without MgSO₄ supplement) and diet with MgSO₄(10 g/kg diet) supplemented. Pigs had free access to diets and water during five-day feeding period. At the end of feeding experiment, pigs were fasted for 16 hours and transported to commercial slaughter plant (30-minute transportation distance). After 2-hour lairage time, pigs were slaughtered, and blood samples were collected at bleeding procedure of slaughter. Pigs fed the diet with MgSO₄ supplement had higher (p<0.05) serum magnesium concentrations than those in pigs fed a control diet. Serum adrenaline, noradrenaline and cortisol concentrations determined at slaughter were not significantly different between dietary groups. Carcass temperature, pH at 24h post- slaughter, drip loss and color characteristics were not influenced (p>0.05) by short-term supplement of MgSO₄. Pigs fed the diet supplemented with MgSO₄ diet had lower PSE incidence (23.3%) compared to pigs fed the control diet (33%). These results indicate that short-term supplement of dietary MgSO₄ in late finishing pigs may not be beneficial in improving pork quality, and further study needs to assess feeding regime of magnesium supplement.
|
|
|
KEYWORD
|
|
|
pigs, magnesium, stress hormones, pork quality
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|