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Showing 1 to 20 of 20 for “"Ractopamine"”.
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Effects of Ractopamine and Muscle Fiber Number on Swine Growth Performance, Carcass Traits, and Meat Quality
… dissertation was to investigate the effects of ractopamine hydrochloride (RAC: PayleanRTM, ELANCO Animal Health, Greenfield, IN) on swine growth performance, carcass traits, meat quality and if its response is influenced by varying muscle fiber number and birth weight. The swine industry is …
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Effects of ractopamine and muscle fiber number on swine growth performance, carcass traits, and meat quality
… dissertation was to investigate the effects of ractopamine hydrochloride (RAC: Paylean®, ELANCO Animal Health, Greenfield, IN) on swine growth performance, carcass traits, meat quality and if its response is influenced by varying muscle fiber number and birth weight. The swine industry is under …
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The Effects of Ractopamine Hydrochloride (Paylean) on Efficiency, Carcass Composition, Carcass Quality and Fat Quality in High Lean Growth Pigs
… were conducted to evaluate the effects of ractopamine hydrochloride (PayleanRTM) (RAC) on efficiency, carcass composition, carcass quality and fat quality in high lean growth pigs. The first study evaluated the effect of RAC on growth performance and carcass characteristics of late …
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Effects of feeding ractopamine (Paylean®) to immunologically castrated (Improvest®) pigs on growth performance, carcass yields, and further processing characteristics
… was to evaluate the effects of feeding ractopamine hydrochloride (RAC; Paylean, Elanco Animal Health, Greenfield, IN) on growth performance, carcass characteristics, fresh meat quality, and further processing characteristics of immunologically castrated (IC; Improvest, Zoetis, Kalamazoo, …
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Effect of ractopamine hydrochloride (Paylean®) on fresh meat and further processing characteristics of muscles from the shoulders of finishing pigs
Ractopamine hydrochloride (RAC), a β-adrenergic agonist, increases muscle mass and decreases fat deposition in the pig. Though RAC has been extensively studied, to date no experiments have quantified its effect on the pork shoulder. Therefore, the objectives of this study were to characterize the …
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The mechanistic action and application of a beta-3 selective adrenergic modulator (LY488756) in finishing cattle
… knowledge of beta-adrenergic agonist compounds (ractopamine hydrochloride, zilpaterol hydrochloride, and clenbuterol hydrochloride) may be helpful in understanding the basic mechanistic function and potential for application of LY488756. During the summer of 2014 (June-August), thirty-five …
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Effects of feeding ractopamine hydrochloride in combination with zinc or chromium on growth performance, carcass characteristics, and meat quality of finishing steers
… decade. One product available on the market is ractopamine hydrochloride (RAC), a beta-agonist that acts as a nutrient repartitioning agent to shift nutrient deposition from fat to lean tissue. There are other additives which may work in combination with RAC to enhance lean tissue deposition and …
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Effects of ractopamine hydrochloride on nutrient digestibility, environmental N excretion, regulation of skeletal muscle growth, and beta-receptor subtypes in finishing beef steers
Beta-adrenergic agonists such as ractopamine hydrochloride (Actogain, Zoetis, Parsippany, NJ) are growth-promoting technologies that when fed at the end of the finishing period in cattle act as repartitioning agents, redirecting energy toward protein accretion and away from lipid deposition. …
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The effect of two levels of dietary ractopamine hydrochloride (Paylean®) supplementation on growth performance, feed efficiency and quantitative carcass traits in finisher gilts
Ractopamine hydrochloride (RAC) has been used in the pig production industry for over 30 years. RAC is a beta-adrenergic agonist which is supplemented in the feed during the last 28 days prior to harvesting in finisher pigs to modify the pig's metabolism such that nutrients are redirected to favour …
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The Effect of a Low Sodium Curing Solution on Further Processed Hams and Bellies from Purebred Berkshire Pigs Fed a Step-up Ractopamine Feeding Program
… a meta-analysis approach, on the effects of ractopamine hydrochloride (RAC) when fed at doses of 5 to 10 mg/kg for up to 35 days prior to harvest on carcass cutability and belly quality of finishing pigs. The objective of the second study was to determine the effect of a lower sodium curing …
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Growth performance and carcass characteristics of immunologically-castrated barrows in comparison to intact males, physically-castrated barrows, and gilts
… barrows, and gilts) and Ractopamine inclusion level (0, 5, and 7.5 mg/kg) on the growth performance and carcass characteristics of pigs from wk 16 of age (69.6 ± 2.96 kg BW) for a fixed-time of 61 d. The results of this study confirmed that immunologically- compared to …
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Development of a liquid-liquid, solid-phase extraction (SPE), LC-MS/MS analytical method for qualitative and quantitative drug residue analysis in white-tailed deer
… tulathromycin, chloramphenicol, and ractopamine). To facilitate qualitative and quantitative analytical method development of veterinary drugs, a sample preparation method was developed to extract individual and multiple veterinary drugs, and an LC-MS/MS method was developed and …
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Examining the Influence of Muscle Fiber Type on Protein Turnover Signaling in Growing Pigs
… the influence of the β-adrenergic agonist Ractopamine (RAC) induced slow-to-fast fiber type transformation on the regulation of protein synthesis and degradation pathways. Although supplementation improved translational capacity, enhanced S6K1 phosphorylation, and reduced the abundance of …
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The Influence of Chromium Supplementation on the Insulin Pathway, Carcass Traits, and Meat Quality of Feedlot Steers
… to a terminal implant and after adaption to ractopamine hydrochloride (RAC). A follow up study, Experiment 2, was conducted with yearling steers supplemented 0 ppb (CON) or 300 ppb Cr propionate (Cr300) for 138d. Cattle were transported to a commercial packing plant for slaughter. Carcass …
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Effects of Amino Acid Supplementation of Reduced Crude Protein (RCP) Diets on the Performance and Carcass Quality of Growing-Finishing Swine
… (RCP4). During finisher phase 3, 10 mg/kg of ractopamine was included in all diets. A subsample of whole pork loins was processed into chops for data collection. Another subsample from the whole pork loin and the s.c. fat from each jowl was freeze dried for fatty acid determination. Gilts had …
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Bacon Production: Evaluating Potential Processing and Management Practices to Improve Product Quality of Industrial Sliced Bacon
… in belly and bacon quality traits in pigs fed ractopamine (RAC) for various durations during finishing. A 2x3x2 factorial arrangement was used with barrows and gilts, fed RAC levels of 0.0, 5.0, or 7.4 ppm, for 21 or 28 d prior to harvest. Bellies were measured for length, thickness, firmness, …
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Three Essays on Agricultural Trade Policy
… China's restrictions on Avian Influenza and ractopamine restrictions in pork exports are estimated to be the most prohibitive, causing an AVE effect of 120.3% and 88.9%, respectively. The third essay develops a discrete-time duration model to examine the extent to which these SPS concern …
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Modeling nutrient requirements and measuring nutrient outputs of feedlot cattle
… containing 289 means for treatments testing ractopamine during the final 14 to 42 days of finishing was subjected to a meta-analysis to develop a regression equation (Heavy Model; HM) describing energy requirements of heavy weight steers at the end of finishing. A validation dataset derived …
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Effect of immunological castration on color stability, shelf life, and sensory characteristics of fresh and further processed pork
… In study 1, chops from IC pigs, IC pigs fed ractopamine (IC+RAC), PC pigs, intact males, and gilts were evaluated for sensory characteristics and instrumental tenderness (Warner-Bratzler Shear and star probe). In study 2, chops from IC pigs fed 0.55% and 0.65% SID lysine and PC pigs fed 0.55% …
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The effects of zinc source and supplemental copper on growth performance, carcass characteristics, and morbidity and mortality of growing-finishing pigs raised under commercial conditions
… nutrient requirements suggested by NRC (2012). Ractopamine hydrochloride (7.5 ppm) was included in the final dietary phase in all dietary treatments for both studies. Pen weights and pen feed intakes were collected every 2 and 3 weeks for Studies 1 and 2, respectively, and used to calculate ADG, …