Search Results - "Fraley, G.S."

Heat stress and poultry production: a comprehensive review by Oluwagbenga, E.M., Fraley, G.S.

“…The impact of global warming on poultry production has gained significant attention over the years. However, our current knowledge and understanding of the…”
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Research Note: Retinal cryptochrome gene expression is not altered by presence of light in incubators by Rivera, P.D., Fraley, G.S.

“…Cryptochromes are blue-, or ultraviolet-, light-absorbing proteins involved in the circadian clock, blue/ultraviolet light perception and potentially…”
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Sex differences in glucocorticoid responses to shipping stress in Pekin ducks by Tetel, V., Van Wyk, B., Fraley, G.S.

“…Some concerns have been raised recently about the assay of corticosterone vs. cortisol in poultry species. Thus, we tested the hypothesis that ducks secrete…”
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Sex differences in serum glucocorticoid levels and heterophil:lymphocyte ratios in adult pekin ducks (Anas platyrhynchos domesticus) by Tetel, V., Tonissen, S., Fraley, G.S.

“…•Sex differences in glucocorticoid release.•Sex differences in heterophil to lymphocyte ratios.•Disconnect between glucocorticoid release and change in…”
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Centennial Review: History and husbandry recommendations for raising Pekin ducks in research or commercial production by Chen, X., Shafer, D., Sifri, M., Lilburn, M., Karcher, D., Cherry, P., Wakenell, P., Fraley, S., Turk, M., Fraley, G.S.

“…By some accounts, ducks were domesticated between 400 and 10,000 yr ago and have been a growing portion of the poultry industry for decades. Ducks…”
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Research Note: Sex difference in changes in heterophil to lymphocyte ratios in response to acute exposure of both corticosterone and cortisol in the Pekin duck by Tetel, V., Tonissen, S., Fraley, G.S.

“…Poultry scientists have utilized both direct and indirect measures of stress hormones for monitoring the state of avian welfare. For decades, it has been…”
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Vocalizations of the Pekin duck (Anas platyrhynchos domesticus): how stimuli, sex, and social groups affect their vocal repertoire by Schober, J.M., Merritt, J., Ulrey, M., Yap, T.Y., Lucas, J.R., Fraley, G.S.

“…Pekin ducks are exposed to stressors such as heat stress, enteric pathogens, mycotoxins, and other environmental stressors. We know from wild bird literature…”
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Preening cups in duck housing are associated with an increase in central dopamine activity that suggests a negative affective state by Bergman, M.M., Schober, J.M., Oluwagbenga, E.M., Frey, D., Parnin, H., Fraley, G.S.

“…Preening cups are a form of environmental enrichment that provides Pekin ducks a semi-open water source to express their natural behaviors. We recently…”
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Preening cups increase apparent wet preening behaviors, but have no impact on other behaviors, body condition, growth, or body morphometrics of grow-out Pekin ducks by Schober, J.M., Merritt, J., Swanson, M., Tetel, V., Oluwagbenga, E., Frey, D., Parnin, H., Erasmus, M., Fraley, G.S.

“…Preening cups may be a form of open water that would allow ducks to express preening behaviors. We set out to test the hypothesis that preening cups would not…”
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Red-green or full-spectrum white LEDs have no effects on incubation or post-hatch production variables in broilers by Riaz, Muhammad F., Bergman, M., Schober, J., Oluwagbenga, E., Christensen, K., Fraley, G.S.

“…Light plays a vital role in the visual perception, development, and welfare of birds. Since the advent of LED lights, numerous studies have attempted to obtain…”
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Expression of deep brain photoreceptors in the Pekin drake: a possible role in the maintenance of testicular function by Haas, R, Alenciks, E, Meddle, S, Fraley, G S

“…Several putative deep brain photoreceptors (DBPs) have been identified, such as melanopsin, opsin 5, and vertebrate ancient opsin. The aim of this study was to…”
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Effects of different dietary vitamin D combinations during the grower phase and the feed restriction phase on growth performance and sternal morphology, mineralization, and related genes expression of bone metabolism in Pekin ducks by Zhou, X.Y., Chen, X.C., Fraley, G.S., Zhang, K.Y., Tian, G., Bai, S.P., Ding, X.M., Wang, J.P., Lv, L., Xuan, Y., Zeng, Q.F.

“…Our study aimed to investigate the effects of different dietary vitamin D (VD) combinations during the grower (1–32 d of age) and feed restriction (33–52 d of…”
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A feed restriction milieu for Pekin meat ducks that may improve gait characteristics but also affects gut leakiness by Bentley, A., Porter, L., Van Blois, L., Van Wyk, B., Vuong, C.N., Tellez-Isaias, G., Shafer, D., Tucker, Z., Fraley, S.M., Hargis, B.M., Fraley, G.S.

“…In a previous study, we demonstrated that a 15% feed restriction (FR) during the first 2 wk after hatch could improve gait in Pekin meat ducks, but did result…”
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Distribution and sequence of gonadotropin-inhibitory hormone and its potential role as a molecular link between feeding and reproductive systems in the Pekin duck ( Anas platyrhynchos domestica ) by Fraley, G.S, Coombs, E, Gerometta, E, Colton, S, Sharp, P.J, Li, Q, Clarke, I.J

“…Highlights ► We describe the GnIH gene in the Pekin drake and three putative transcripts. ► We describe the distribution of GnIH in the Pekin drake brain. ► We…”
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Effect of dietary 25-hydroxycholecalciferol on the sternal mass of meat ducks under different vitamin regimens by Zhang, H Y, Zeng, Q F, Bai, S P, Wang, J P, Ding, X M, Xuan, Y, Su, Z W, Fraley, G S, Yao, B, Zhang, K Y

“…Genetic selection and intensive nutrition for increased growth rate in meat-type ducks has resulted in an imbalance between pectorales increment and sternal…”
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Feed Restriction Can Alter Gait but Does not Reduce Welfare in Meat Ducks by Van Blois, L., Bentley, A., Porter, L., Prihoda, N., Potter, H., Van Wyk, B., Shafer, D., Fraley, S.M., Fraley, G.S.

“…Like other poultry species, Pekin ducks may develop gait abnormalities due to increased muscle growth relative to the skeletal system. Previous studies have…”
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Sex differences in the effect of prepubertal GALP infusion on growth, metabolism and LH secretion by Rich, N, Reyes, P, Reap, L, Goswami, R, Fraley, G.S

“…Abstract The hypothalamic neuropeptide, galanin-like peptide (GALP), is known to have an effect on energy expenditure and reproduction in adult male rats, but…”
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Resveratrol protects neurons from cannulae implantation injury: Implications for deep brain stimulation by Constant, J.P, Fraley, G.S, Forbes, E, Hallas, B.H, Leheste, J.R, Torres, G

“…Highlights ► Resveratrol protects the brain from mechanical injury. ► Deep brain stimulation surgery can cause astrocytic gliosis and cell dystrophy. ►…”
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Differences in central dopamine, but not serotonin, activity and welfare associated with age but not with preening cup use in commercial grow-out Pekin duck barns by Bergman, M.M., Schober, J.M., Novak, R., Grief, A., Plue, C., Frey, D., Parnin, H., Fraley, G.S.

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Transportation increases circulating corticosterone levels and decreases central serotonergic activity in a sex dependent manner in Pekin ducks by Bergman, M.M., Schober, J.M., Novak, R., Grief, A., Plue, C., Fraley, G.S.

“…Previous studies from our lab suggest that transportation of early adulthood ducks can have long lasting physiological effects. To better understand how…”
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