Christy L Bratcher

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Aging patterns of nine muscles from the chuck and round from two quality classifications of beef: USDA Select and upper 2/3 of USDA Choice grade were determined. The following muscles were evaluated: infraspinatus, triceps brachii - lateral head, triceps brachii - long head, serratus ventralis, complexus, splenius, rhomboideus, vastus lateralis and rectus(More)
Innovations in poultry processing include implementation of antimicrobials in post-chill decontamination tanks. In this study, a total of 160 broiler carcasses were analyzed to evaluate the efficacy of five post-chill water treatments consisting of 0.004% (40ppm) total chlorine, 0.04% (400ppm) or 0.1% (1000ppm) peracetic acid (PAA), and 0.1% (1000ppm) or(More)
This experiment investigated the combined effects of two dry-aging methods (unpackaged and in a bag), two loin-cut styles (bone-in shell loins and boneless strip loins), and two aging times (21 and 28days) on the physical, chemical, sensory, and microbial properties of dry-aged beef. Sections from shell and strip loin were assigned randomly to be aged(More)
AIMS The objectives of this study were to investigate the correlations between Shiga toxin-producing Escherichia coli (STEC) shedding and faecal microflora in beef cattle and to identify functional species that might be used for STEC control. METHODS AND RESULTS Faecal samples were collected from 110 calves and 92 dams. The number and prevalence of STEC(More)
We studied the effect of vasoactive intestinal peptide (VIP) on the output of 35S-labeled macromolecules from ferret tracheal explants either placed in beakers or suspended in modified Ussing chambers. In Ussing chamber experiments, the radiolabel precursor, sodium [35S]sulfate, and all drugs were placed on the submucosal side of the tissue. Washings were(More)
Stimulation of bronchial C-fibers evokes a reflex increase in secretion by tracheal submucosal glands, but the influence of pulmonary C-fibers on tracheal gland secretion is uncertain. In anesthetized dogs with open chests, we sprayed powdered tantalum on the exposed mucosa of a segment of the upper trachea to measure the rate of secretion by submucosal(More)
Translocation of Escherichia coli among beef loins processed with a mechanical tenderizer was evaluated. Two beef striploins were inoculated on the lean side with 6.4 to 7.2 ml of a nalidixic acid-resistant E. coli at 8.2 to 10.1 log CFU/ml. Total E. coli inoculated onto striploins ranged from 1.12 × 10(9) to 9.10 × 10(10) CFU. Striploins were passed once(More)
Market trends indicate an increased interest in natural antimicrobials to augment safety of ready-to-eat meat and poultry products against Listeria monocytogenes. Liquid smoke, an all-natural condensate of smoke components, applied as a postprocess treatment on product surface has the potential to exhibit antilisterial properties. Studies on its(More)
Poultry processing plants in the United States were surveyed on their current Campylobacter and Salmonella control practices. Following surveys, data were collected to develop a baseline for prevalence rates of Salmonella and Campylobacter; then changes in practices were implemented and evaluated for improvements in pathogen control. Surveys were sent to(More)
Mechanisms underlying variation in residual feed intake (RFI), a heritable feed efficiency measure, are poorly understood while the relationship between RFI and meat quality is uncertain. To address these issues, 2 divergent cohorts consisting of High (HRFI) and Low (LRFI) RFI individuals were created by assessing RFI in 48 Angus-sired steers during a 70 d(More)