| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Department of Animal Science, University of Missouri, Columbia 65211-5300
3 Correspondence: S138 Animal Science Research Center, 920 East Campus Drive (phone: 573-882-3176; fax: 573-882-6827; E-mail: BergEP{at}missouri.edu).
The objective of this study was to evaluate short-duration supplementation of 
-lipoic acid (ALA) and creatine monohydrate (CMH) to improve fresh pork quality. Forty-eight commercial hybrid barrows were blocked by BW and randomly allotted to one of four treatments: 1) no CMH or ALA; 2) supplementation of 24 g of CMH-1•pig-1•d-1; 3) supplementation of 600 mg ALA-1•pig-1•d-1; or 4) combined CMH and ALA supplements. Twelve pigs per treatment were individually penned with ad libitum access to water and a finishing diet. Treatments were hand-fed to individual pigs daily (divided into three equal doses) for 5 d before slaughter at 113 kg BW in two separate groups of 24 pigs each. Intramuscular pH was recorded at 45 min postmortem and again at 24 h in the ham semimembranosus (SM) and the longissimus muscle (LM) between the 10th and 11th rib. A Meatcheck (SFK Technology, Peosta, IA) conductivity probe was inserted in the same anatomical locations as pH measurement, providing an index value (PY) from 0 to 100 (a higher index value indicates more intact muscle cells and higher water-holding capacity). Color (L, a, b values) measurements were obtained at 24 h postmortem on the ham gluteus medius (GM), SM, and LM. Two 2.54-cm-thick loin chops were removed from the loin for determination of Warner-Bratzler shear force and glycolytic potential. The intact SM and the posterior portion of the boneless loin were vacuum-packaged and stored for 7 d to determine purge loss. Creatine-supplemented pigs had a higher (P = 0.03) PY value in the SM (66.67) at 45 min postmortem than either ALA, singularly (63.50), or in the combined CMH/ALA (62.27) treatments. (A higher PY index indicates superior water-holding capacity.) Lipoic acid supplementation resulted in the highest pH at 45 min (P = 0.029). These results justify further evaluation of the potential positive influence of supplementing -lipoic acid to improve pork quality.
Key Words: Creatine • Lipoic Acid • Meat Quality • Pork
This article has been cited by other articles:
|
|
 |
|
  M. Betti, B. L. Schneider, W. V. Wismer, V. L. Carney, M. J. Zuidhof, and R. A. Renema Omega-3-enriched broiler meat: 2. Functional properties, oxidative stability, and consumer acceptance Poult. Sci., May 1, 2009; 88(5): 1085 - 1095. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 D. C. Kendall, A. M. Gaines, B. J. Kerr, and G. L. Allee True ileal digestible tryptophan to lysine ratios in ninety- to one hundred twenty-five-kilogram barrows J Anim Sci, November 1, 2007; 85(11): 3004 - 3012. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Q. W. Shen, K. R. Underwood, W. J. Means, R. J. McCormick, and M. Du The halothane gene, energy metabolism, adenosine monophosphate-activated protein kinase, and glycolysis in postmortem pig longissimus dorsi muscle J Anim Sci, April 1, 2007; 85(4): 1054 - 1061. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Q. W. Shen, C. S. Jones, N. Kalchayanand, M. J. Zhu, and M. Du Effect of dietary {alpha}-lipoic acid on growth, body composition, muscle pH, and AMP-activated protein kinase phosphorylation in mice J Anim Sci, November 1, 2005; 83(11): 2611 - 2617. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. T. Yen, J. E. Wells, and D. N. Miller Dried skim milk as a replacement for soybean meal in growing-finishing diets: Effects on growth performance, apparent total-tract nitrogen digestibility, urinary and fecal nitrogen excretion, and carcass traits in pigs J Anim Sci, November 1, 2004; 82(11): 3338 - 3345. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
