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Abstracts of the 2018 International Poultry Scientific Forum Georgia World Congress Center, Atlanta, Georgia January 29–30, 2018

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Abstracts of the 2018 International Poultry Scientific Forum Georgia World Congress Center, Atlanta, Georgia January 29–30, 2018 Abstracts of the 2018 International Poultry Scientific Forum Georgia World Congress Center, Atlanta, Georgia January 29–30, 2018 SYMPOSIA AND ORAL SESSIONS Monday, January 29, 2018 Abstract Page No. No. Milton Y Dendy Keynote Address . .B313 . 266 Physiology, Endocrinology & Reproduction . M1–M6. 267 Processing & Products . M7–M16. 269 Metabolism & Nutrition - Enzymes . M17–M25. 271 Pathology . M26–M33. 274 SCAD . M34–M45. 277 Metabolism & Nutrition - Amino Acids . M46–M58. 280 Metabolism & Nutrition - Vitamins & Minerals . M59–M71. 283 Metabolism & Nutrition - Feed Additives & General Nutrition . M72–M96. 287 Environment, Management & Animal Well-Being - Behavior & Incubation . M98–M107. 294 Environment, Management & Animal Well-Being - Stress Responses . .M108–M116 . 297 Physiology . .M117–M119 . 299 Processing and Products . M120–M123. 300 Tuesday, January 30, 2018 Environment, Management & Animal Well-Being - Stress Responses . .T124–T128 . 302 Environment, Management & Animal Well-Being - Behavior & Incubation . .T129–T134 . 303 SCAD . .T135–T140 . 305 Metabolism & Nutrition - Amino Acids . T141–T145. 306 Metabolism & Nutrition - Enzymes . .T146–T158 . 308 Metabolism & Nutrition - Feed Additives . .T159–T183 . 312 POSTER PRESENTATIONS . P184–P340. 319 IPSF Author Index . 360 ABSTRACTS 2018 International Poultry Scientific Forum Georgia World Congress Center, Atlanta, Georgia January 29-30, 2018 Milton Y Dendy Keynote Address B-313 The Evolution of Broiler Production Programs since 1985 and Challenges in How Broilers Will Be Grown in Coming Years Michael Donohue, Agri Stats, Inc. Broiler producers worldwide continue to benefit from annual gains in efficiencies in both broiler production and processing. These gains are a result of ongoing work in genetic selection programs, greater knowledge in poultry health management systems along with efforts to improve poultry housing and ventilation. Some of the tools used to realize these gains are no longer available for use. Changes in consumer choices for the types of chicken they want to purchase demand that broiler producers adapt to the changes and adopt different management and feeding programs to meet these new requirements. In broiler growout these changes include transitions in the use of many feed medications including antibiotics and ionophore coccidiostats, differences in the density of placement for birds and increased downtime between flocks in many operations. In the processing plant the importance of developing effective food safety programs to meet higher standards has led to changes in processing programs and in the products used to reduce the incidence of pathogens in the system. Using industry data the magnitude of these changes will be explored with the goal of trying to understand in both production and economic terms the ongoing effects of industry evolution. Change is inevitable, how we respond to change is our option. 266 1 2 ABSTRACTS OF PAPERS *Author presenting paper GS Denotes Graduate Student Competition UG Denotes Undergraduate Presentation Physiology, Endocrinology & Reproduction + + M1 Effect of in ovo LAB and Gram-negative bacterial inoculation unit. Blood chemistry (pH, pCO2, pO2, BEecf, HCO3, tCO2, sO2, Na , K , on the microbiome and GIT development of chicks Kim Wilson*GS1, iCa2+, Glu, Hct, Hb) and carcass characteristics including WS and WB Whitney Briggs1, Audrey Duff1, Kaylin Chasser1, Liwen Zhang2, Xiaolun scores were determined on individual birds. Data were analyzed using the Sun3, Lisa Bielke1 1The Ohio State University-OARDC; 2Mass Spectrometry GLM procedure of SAS with means separated using the LS means proce- and Proteomics Facility, The Ohio State University; 3University of Arkansas dure. Broilers fed supplemental glutamine exhibited greater BW (3.39 vs 3.20 kg; P<0.001) and improved FCR (1.66 vs 1.69 kg; P<0.02). Broilers Improved GIT development of chicks may be influenced by exposure to fed supplemental arginine also exhibited greater BW (3.37 vs 3.23 kg; bacteria during hatch. To promote early colonization of beneficial bacteria, P<0.001) and improved FCR (1.66 vs 1.70; P < 0.001). However, sup- in ovo administration is a potentially efficient means to influence pioneer plemental glutamine also produced greater WS scores (2.64 vs 1.91; P colonizers of the GIT. Impact of different types of pioneer colonizers on < 0.001) and greater WB scores (1.83 vs 2.73; P < 0.05). Moreover, as the development of the microbiome community and GIT are not well- the severity of WB and WS myopathies increased, blood HCO levels in- studied, especially direct comparison of Gram-negative and lactic acid 3 producing (LAB) strains. Preliminary studies showed that exposure to creased (P < 0.05), hemoglobin increased (P <0.05), and oxygen saturation Klebsiella oxytoca or a LAB-probiotic resulted in increased LAB recovery was numerically reduced (P < 0.09). These data suggested that myopathies in the GIT of day of hatch (DOH) chicks on MRS agar. Therefore, it was may be associated with a physiological state of hypoxia. Broilers in this hypothesized that in ovo inoculation by different species of bacteria may condition coupled with the availability of ketogenic amino acids (gluta- affect microbiota and tissue development of chicks. The objective of this mine) and ATP demand may have resulted in the increased WS myopathy study was to directly compare impact of two apathogenic Gram-negative scores. isolates or a LAB-probiotic as pioneer colonizers on the microbiome and Key Words: Broiler Myopathies, Wooden Breast, White Striping, proteome of chicks. At ED18, embryos were inoculated with either saline Glutamine, Arginine (S), or ~ 102 CFU of Citrobacter freundii (C), Klebsiella oxytoca (K) or a LAB-probiotic (L). On DOH, the whole-GIT were collected and DNA M3 The effect of feed restriction on ghrelin concentration in male from contents were processed for 2 x 300 paired-end Ilumina MiSeq for broiler chickens Nurudeen Taofeek*Gs, Fernando Vizcarra, Martha microbiome analysis. In addition, protein was extracted from the whole Verghese, Jorge Vizcarra Alabama A & M University GIT and were subjected to a Fusion mass spectrometer and proteins were The role of ghrelin as a polypeptide of importance in the control of feed identified using the Gallus gallus reference in MASCOT. Ceca were col- intake in male broiler breeders was evaluated in this study. Ten one-day lected at 3D and 10D for microbiome evaluation. Though richness and old male broiler chicks were reared using normal feeding and lighting diversity did not differ between treatments (p > 0.05) at 3D and 10D, DOH management as recommended by the industry. At 3 weeks of age birds host proteins were differentially expressed, particularly in stress-related were transferred to individual cages with continued free access to feed and proteins. There was a 0.4 fold down-regulation of HSP 70 and 3.4 fold water and a 23L:1D photoperiod. To facilitate continuous blood sampling, up-regulation of peroxiredoxin in C compared to S (p < 0.05). In the K birds were catheterized in the jugular vein on experimental day 0 at a body chicks, there was a 0.2 and 0.3 fold down-regulation of HSP 90 and heat weight of 2.0 ± 0.1 kg. Blood samples were collected at 1 h intervals for shock cognate protein 90 compared to S (p < 0.10). Taken together, the op- 6 h (time 1 to time 6) commencing the day after cannulation (d1) and on portunity to impact the bacterial community and GIT development is very days 2, 3, 4, 5, 6 and 7 for a total of 42 samples/bird. On day 2, birds were early and different isolates may alter intestinal development before the placed in a feed restricted diet until the end of the experiment (d7). The re- chick leaves the hatcher and result in altered phenotypic changes involved stricted feeding regimen consisted of one-third of the quantity of feed con- in GIT growth and development. sumed per day by birds during the week before cannulation. Restricted Key Words: in-ovo, microbiome, proteome birds were fed immediately after the first blood sample was obtained (time 1). Concentrations of ghrelin were evaluated in plasma samples using a M2 Blood physiology of broilers presented with breast myopathies chicken ghrelin ELISA kit and concentrations of glucose were measured and supplemented with dietary glutamine and arginine. Matthew using a colorimetric assay. The effect of feed restriction on glucose and Livingston*GS, Peter Ferket, John Brake, Kimberly Livingston North ghrelin concentration were analyzed using repeated measurements over Carolina State University time. The statistical model included the effect of day of treatment (d1 to d7), time within day (time 1 to time 6) and the day x time interaction. Wooden breast (WB) and white striping (WS) muscle myopathies are a There was no day x time interaction for both glucose and ghrelin con- Pectoralis major muscle condition found recently in broilers and has been centrations. There was a day (P = 0.0392) and time (P = 0.0002) effect characterized by degenerative necrosis, atrophy of individual muscle fi- on glucose concentrations. Concentrations of glucose decreased linearly brils, and an infiltration of adipose tissue. It has been reported to occur in from d1 to d7 and increased at time 2 and time 3 compared to time 1. Con- as much as 12% of commercial broiler flocks (Petracci et al., 2013). One centrations of ghrelin were increased on days 5, 6 and 7 as compared to causal theory is least-cost feed changes that include lower soybean meal day 1 (P = 0.0016). Taken together, feed restriction was associated with a and greater synthetic amino acid inclusions resulting in marginal dietary normal physiological response to glucose concentrations. Ghrelin concen- levels of conditionally essential amino acids such as glutamine and argi- trations increased after four days of feed restriction and remain increased nine. For this study, 2 levels of supplemental glutamine (0 and 1%) and 2 until the end of the experiment (d7).
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