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Production, Management & the Environment - Livestock and Poultry Poultry Production and Reproduction Chair: William Roush, USDA ARS Poultry Research Unit 213

9:30 AM

498

Influence of hatching egg weight and Japanese quail breeder flock age on embryonic mortality stages, hatchability and chick quality measurments. T. M. El-Sheikh*, Sohag University, Sohag, Egypt.

9:45 AM

499

Can dietary molting replace feed withdrawal molting? R. M. Marchant-Forde* and H. W. Cheng, USDA, Livestock Behavior Research Unit, West Lafayette, IN.

10:00 AM

500

Effects of supplemental dietary phytase and 25-hydroxycholecalciferol on the digestive and reproductive organ characteristics of commercial layers inoculated Before or at the Onset of Lay with the F-Strain of Mycoplasma gallisepticum. E. D. Peebles* , S. L. Branton2, M. R. Burnham1, S. K. Whitmarsh1, and P. D. Gerard1, 1Mississippi State University, Mississippi State, Poultry Research Unit, Agricultural Research Service, United States Department of Agriculture, Mississippi State, MS.

1 2

10:15 AM

501

Validity of fertilization assessment of broiler hatching eggs. R. W. Keirs*, P. D. Gerard, and E. D. Peebles, Mississippi State University, Mississippi State.

10:30 AM

502

Effectiveness of immersion of hatching eggs into disinfectant solutions in a commercial hatchery. J. M. Mauldin*1, A. L. O'Shaughnessy2, and M. T. Musgrove3, 1The University of Georgia, Athens, 2United Promotions, Inc, Atlanta, GA, 3ARS- USDA, Athens, GA.

10:45 AM

503

Effects of multistage or single-stage incubation on broiler chick quality and performance. B. D. Fairchild*1, J. M. Mauldin1, and R. J. Buhr2, 1University of Georgia Poultry Science Department, Athens, 2USDA, ARS, Athens, GA.

11:00 AM

504

Comparisons of hatchability measures in Jamesway Platinum single stage incubators with Jamesway Multistage incubators in broiler hatchery in Georgia. J. M. Mauldin*, S. A. Kuzniak, and T. L. Gardino, The University of Georgia, Athens.

11:15 AM

505

A comparison of effects of single stage vs. multistage incubation on hatching egg moisture weight loss and chick weights in a broiler hatchery in Georgia. J. M. Mauldin*, S. A. Kuzniak, and T. L. Gardino, The University of Georgia, Athens.

11:30 AM

506

Effect of single-stage incubation temperature profile and delayed placement on broiler performance to 40 days of age. J. T.

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SYMPOSIUM Physiology & Endocrinology - Livestock and Poultry Role of Lipids and Fatty Acids in Regulation of Reproductive Function Chair: Arnold R. Hippen, South Dakota State University 214 D

9:30 AM

492

The role of omega-3 and -6 fatty acids in regulation of reproductive function in horses. E. L. Squires*, Colorado State University, Fort Collins.

10:10 AM

493

Addition of protected fat in ewes with different corporal condition on superovulation and conception rate. P. Molina1, T. Sánchez1, O. Mejía2, J. Nuñez2, E. García*3, O. D. Montañez-Valdez4, J. Cordero1, J. Peralta1, M. E. Ortega1, R. Nieto5, E. Mendoza1, and R. Avila1, 1Colegio de Postgraduados, Montecillo, Estado de México, México, 2Facultad de Medicina Veterinaria y Zootecnia, UNAM, Tres Marías, Municipio de Huitzilac, México, 3Centro Universitario de la Costa Sur de la Universidad de Guadalajara, Autlán, Jalisco, México, 4Centro Universitario del Sur de la Universidad de Guadalajara, Ciudad Guzmán, Jalisco, México, 5Instituto Tecnológico Agropecuario No.6, Huejutla, Hidalgo, México.

10:25 AM

494

Dietary omega-3 and omega-6 fatty acids and reproduction in dairy cattle. L. Badinga* and C. Caldari-Torres, University of Florida, Gainesville.

11:05 AM

495

Reproductive function in dairy cows fed a lipid encapsulated conjugated linoleic acid supplement. G. E. Mann*1, A. L. Lock2, D. E. Bauman3, and N. R. Kendall1, 1University of Nottingham, Sutton Bonington, Loughborough, UK, 2University of Vermont, Burlington, 3Cornell University, Ithaca, NY.

11:20 AM

496

Dietary lipids and reproduction in beef cattle. R. N. Funston*, University of Nebraska, West Central Research and Extension Center, North Platte.

12:00 PM

497

The role of dietary omega-3 and omega-6 fatty acids in swine reproduction. S. K. Webel*, J. D. Spencer, and A. M. Gaines, JBS United, Inc., Sheridan, IN.

Grande do Sul, Porto Alegre, RS, Brazil.

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