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Articles by C. Pixley
Total Records ( 2 ) for C. Pixley
  A.D. Wolfenden , C. Pixley , B.M. Hargis , G. Tellez , J.L. Vicente and L. Avina
  In poultry and other species, economic losses during transport are due to mortality, carcass shrinkage (carcass dehydration) and carcass condemnation. Feed Withdrawal (FW) prior to processing is necessary to reduce fecal ingesta contamination of carcasses during processing. Direct acidification of the water with specific concentrations of some Organic Acids (OA) has been shown to significantly reduce the amount of potential pathogens such as Salmonella on the carcasses by antemortem disinfection of the crops when used during the pre-slaughter feed withdrawal period. However, reduced water consumption due to effective OA concentrations have been shown to increase carcass shrink. In the present study, the effect of a commercially available mix of flavored organic acids significantly reduced carcass condemnation at the processing plant in 3/3 trials (p<0.05) % and mortality during transportation in 1/3 trials (0.40% treated vs. 0.65% control). A consistent improvement of average body weights at the farm and at the processing plant due to reduction of carcass shrinkage and condemnation at the processing plant were also observed in the treated marked age broiler chickens. Water intake was numerically higher in treated birds when compared with non-treated birds (72.9 mL vs. 62.5 mL). During FW, this OA product could be useful to reduce mortality, shrinkage and carcass condemnation during transportation to the processing plant of broiler chickens.
  C. Pixley , J. Barton , J.L. Vicente , A.D. Wolfenden , B.M. Hargis and G. Tellez
  The transport of live animals has important economic and welfare implications. A commercially-available organic acid product (Optimizer) was added to the drinking water of commercial hen turkeys during preslaughter Feed Withdrawal (FW) in two trials. In trial 1, a total of 60 trailers from treated (OA) or control non-treated turkey houses were evaluated. Turkey farmers initiated water treatment on the day before pick up (8-12 h treatment according to label directions). Investigators recorded trailer numbers as they were loaded out of each house to confirm which trailers contained treated birds vs. control non-treated birds. Individual trailer weights were recorded upon arrival to the processing plant and again immediately prior to live hang. A significant reduction in rate of weight loss during holding at the processing plant was observed in the treated turkeys (719 g/min per OA treated trailer vs. 845 g/min per control trailer). In trial 2, two commercial market age turkey houses were selected and in each house, 400 birds were weighed and recorded as a representative sampling. The treated house received OA administered according to manufacturer’s directions continuously for 19 h. At the end of this time, 400 birds were weighed and recorded as a representative sampling. A significant (p<0.05) improvement of average body weights was observed in treated turkeys during 19 h (125 g treated vs. 35 g control), an average of 90 grams difference. Experiments are ongoing to measure water consumption during the FW that may explain the reduction in carcass shrinkage during transportation to the processing plant and increased body weights at the farm by increasing hydration of turkeys treated with OA.
 
 
 
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