M169. PULSATILITY OF LUTEINIZING HORMONE (LH) RELEASE DURING THE ANOVULATORY AND OVULATORY LH PEAKS IN THE AFRICAN ELEPHANT, Loxodonta africana. Dahl, Nancy¹, Blasko, David², Roser, Janet¹, ¹ University of California, Davis, CA² Six Flags Marine World, Vallejo, CA

T170. EFFECTS OF LIGHT, HYPOTHYROIDISM AND MELATONIN TREATMENT ON LEYDIG STEM CELL DIFFERENTIATION IN THE PREPUBERTAL HAMSTER TESTIS. Hance, Michael¹, Mendis-Handagama, Chamindrani¹, ¹ The University of Tennessee, Knoxville, TN

W171. THE EXPRESSION AND LOCALIZATION OF THE SCAVENGER RECEPTOR CLASS B TYPE I (SRBI) AND TYPE II (SRBII) IN THE TWO COMPARTMENTS OF THE TESTIS DURING THE POSTNATAL DEVELOPMENT AND THE SEASONAL ANNUAL REPRODUCTIVE CYCLE IN THE ADULT IN THE MINK. Akpovi, Casimir¹, Vitale, María¹, Pelletier, R.-Marc¹, ¹ Université de Montréal, Montréal, QC, Canada

M172. UNUSUAL STEROID-BINDING SPECIFICITY OF HYENA SEX HORMONE-BINDING GLOBULIN. Miguel-Queralt, Solange¹, Yalcinkaya, Tamar², Avvakumov, George³, Place, Ned⁴, Siiteri, Pentti², Glickman, Steve⁴, Hammond, Geoffrey¹, ¹ University of British Columbia, Vancouver, Canada² University of California, San Francisco, CA³ University of Toronto, Toronto, Canada⁴ University of California, Berkeley, CA

T173. ADMINISTRATION OF A NITRIC OXIDE DONOR INTO THE CORPUS LUTEUM INCREASES LUTEAL BLOOD FLOW, STARTS THE CASCADE OF LUTEOLYSIS, AND SHORTENS THE ESTROUS CYCLE IN THE COW. Shirasuna, Koumei¹, Watanabe, Sho¹, Yamamoto, Dai¹, Morota, Keiko¹, Asahi, Takayuki¹, Miyamoto, Akio¹, ¹ Obihiro University of Agr. & Vet. Med., Obihiro, Japan

W174. SEASONAL CHANGES IN SERUM LEPTIN CONCENTRATIONS AND BODY WEIGHT IN CAPTIVE FEMALE WHITE-TAILED DEER. Becker, Susan¹, Katz, Larry¹, ¹ Rutgers University, New Brunswick, NJ

M175. CYTOCHROME b5 (b5) EXPRESSION AND 17,20-LYASE ACTIVITY DURING ZONA RETICULARIS (ZR) DEVELOPMENT OF THE RHESUS MACAQUE (Macaca mulatta). Nguyen, Ann¹, Conley, Alan¹, ¹ University of California, Davis, Davis, CA

T176. ROLES OF ANGIOPOIETINS IN THE HUMAN CORPUS LUTEUM THROUGHOUT THE MENSTRUAL CYCLE AND IN EARLY PREGNANCY. Sugino, Norihiro¹, Sakata, Aki¹, Taketani, Toshiaki¹, Asada, Hiromi¹, Tamura, Hiroshi¹, ¹ Yamaguchi University School of Medicine, Ube, Japan

W177. ENDOCRINE PROFILES OF ESTROUS CYCLE IN MITHUN (Bos frontalis). Dhali, Arindam¹, Mishra, Durga Prasad², Karunakaran, Muthupalani ³, Mech, Anjumoni ¹, Mondal, Shyamal Kumar¹, Rajkhowa, Chandan ¹, ¹ National Research Centre on Mithun, Medziphema, Nagaland, India² National Institute of Immonology, New Delhi, India³ ICAR Research Complex for NEH Region, Medziphema, India

M178. THE OBSERVATION Of MARE OVARIES DURING PREGNANCY BY THREE-DIMENSIONAL INTERNAL STRUCTURE MICROSCOPY (3D-ISM). Hirano, Yuko^{1, 2}, Matsui, Motozumi², Ikai, Shiho³, Kimura, Junpei³, Ishinazaka, Tsuyoshi³, Tsumagari, Shigehisa³, Yokota, Hideo⁴, Nakamura, Sakiko⁴, Takemoto, Satoko^{4, 5}, Mishima, Taketoshi^{4, 5}, Nambo, Yasuo⁶, Miyake, Yoh-Ichi^{1, 2}, ¹ Gifu University, Gifu, Japan² Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan³ Nihon University, Fujisawa, Japan⁴ The Institute of Physical and Chemical Research (RIKEN), Wako, Japan⁵ Saitama University, Saitama⁶ The Japan Racing Association, Hidaka, Japan

T179. QUANTITATIVE ANALYSIS AFTER VASECTOMY IN BONNET MONKEY (Macaca radiata). Prakash, Seppan¹, Kamakshi, Krishnaswamy¹, ¹ University of Madras, Chennai, Tamil Nadu, India

W180. FKBP52, A CHAPERONE IN STEROID RECEPTOR COMPLEXES, IS REQUIRED FOR MALE AND FEMALE REPRODUCTIVE PROCESSES IN MICE. Smith, David¹, Cheung-Flynn, Joyce¹, Cox, Marc¹, Prapapanich, Viravan¹, Riggs, Daniel¹, ¹ Mayo Clinic Scottsdale, Scottsdale, AZ

M181. ENDOTHELIN-1 MAY HAVE A KEY ROLE IN STRUCTURAL LUTEOLYSIS IN ADDITION TO FUNCTIONAL LUTEOLYSIS IN THE COW. Watanabe, Sho¹, Shirasuna, Koumei¹, Matsui, Motozumi¹, Yamamoto, Dai¹, Berisha, Bajram², Schams, Dieter², Miyamoto, Akio¹, ¹ Obihiro University of Agriculture & Veterinary Medicine, Obihiro, Japan² Technical University of Munich, Weihenstephaner Berg, Germany

T182. URINARY ESTROGEN PATTERNS ASSOCIATED WITH THE ESTROUS CYCLE OF THE ASIAN ELEPHANT. Graham, Laura¹, Gray, Charlie², Buhr, Mary¹, ¹ University of Guelph, Guelph, ON, Canada² African Lion Safari, Cambridge, ON, Canada

W183. ULTRASONIC MONITORING OF FOLLICLES AND CORPORA LUTEA DURING SYNCHRONIZATION IN SUMMER ANOESTROUS NILI RAVI BUFFALOES AND THEIR SUBSEQUENT SUPEROVULATORY RESPONSE. Ahmad, Nasim ¹, Khan,, Muhammad Irfan-ur-Rehman ¹, Ahmad, Mudassir ¹, ¹ University of Veterinary and Animal Sciences, Lahore, Pakistan

M184. ESTROGEN RECEPTOR ALPHA-2: A NOVEL ISOFORM FROM THE RAINBOW TROUT. Nagler, James¹, Cavileer, Tim¹, Cyr, Daniel ², Rexroad, Caird³, ¹ University of Idaho, Moscow, Idaho² Universite du Quebec, Pointe-Claire, QC, Canada³ USDA/ARS National Center for Cool and Cold Water Aquaculture, Kearneysville, WV

T185. MAINTENANCE OF BREED SPECIFIC OVULATION RATE IN LONG-TERM UNILATERALLY OVARIECTOMIZED EWES. Duggavathi, Raj^{1, 2, 3}, Bartlewski, Pawel^{1, 4}, Barrett, David¹, Rawlings, Norman¹, ¹ University of Saskatchewan, Saskatoon, SK, Canada² CRRA, St. Hyacinthe, QC, Canada³ IGBMC, Illkirch, Alsace, France⁴ University of Guelph, Guelph, ON, Canada

W186. PARADOXICAL EFFECTS OF MAXIMAL ANDROGEN BLOCKADE ON SEX HORMONE CONCENTRATIONS IN PREGNANT SPOTTED HYENAS, Crocuta crocuta. Place, Ned^{1, 2}, Coscia, Elizabeth², Dahl, Nancy³, Drea, Christine⁴, Holekamp, Kay⁵, Sisk, Cheryl⁵, Weldele, Mary², Glickman, Stephen², ¹ Cornell University, Ithaca, NY² University of California, Berkeley, Berkeley, CA³ University of California, Davis, Davis, CA⁴ Duke University, Durham, NC⁵ Michigan State University, East Lansing, MI

M187. IMPACT OF TESE MEDIUM ON THE PREGNANCY RATE IN DAIRY CATTLE AFTER ARTIFICIAL INSEMINATION: AN ANIMAL MODEL. Feng, H.¹, ¹ Reproductive Biology, ART and Solution, New Hyde Park, NY

T188. STEROID REGULATION OF CELL SPECIFIC OSTEOPONTIN EXPRESSION IN THE PREGNANT PORCINE UTERUS. Johnson, Greg¹, White, Frankie¹, Joyce, Margaret¹, Ross, Jason², Geisert, Rodney², Burghardt, Robert¹, ¹ Texas A&M University, College Station, TX² Oklahoma State University, Stillwater, OK

W189. CHARACTERIZATION OF PLASMA FSH CONCENTRATIONS IN PROLIFIC EWES HETEROZYGOUS FOR THE METHERELL ALLELE (FecX2^M). Juengel, Jennifer¹, Hudson, Norma¹, Morrison, Lilian¹, Davis, George², McNatty, Kenneth¹, ¹ AgResearch, Wallaceville Animal Research Centre, Upper Hutt, New Zealand² AgResearch, Invermay Agricultural Centre, Mosgiel, New Zealand

M190. TESTOSTERONE INDUCES PROGESTERONE PRODUCTION AND INTERACTS WITH PHYSIOLOGICAL CONCENTRATIONS OF LH TO INCREASE GRANULOSA CELL PROGESTERONE PRODUCTION IN HENS Gallus domesticus. Rangel, Lucia¹, Lassala, Arantzatzu¹, Gutierrez, Carlos¹, ¹ Facultad de Medicina Veterinaria., Mexico, D.F., Mexico

T191. PUBERTY AND SEXUAL BEHAVIOR IN THE CASPIAN MINIATURE COLTS. Dordari, Shahram¹, Amini, Fereydoon², Rezaie, Morteza¹, ¹ Agricultural Research & Education Organization, Tehran, Iran² Animal Science Institute, Karadj, Iran

W192. CHARACTERIZATION OF SEASONAL SEMINAL TRAITS IN THE NORTH AMERICAN RIVER OTTER (Lontra canadensis). Bateman, Helen¹, Bond, Jennifer¹, Campbell, Mark¹, Barrie, Mike², Riggs, Gary³, Synder, Barb⁴, Swanson, William¹, ¹ Center for Conservation and Research of Endangered Wildlife, Cincinnati, OH² Columbus Zoo and Aquarium, Powell, OH³ Akron Zoological Park, Akron, OH⁴ John Ball Zoological Garden, Grand Rapids, MI

M193. TESTIS STRUCTURE, DURATION OF SPERMATOGENESIS AND SPERMATOGENIC AND SERTOLI CELL EFFICIENCIES IN THE COLLARED PECCARIES (Tayassu tajacu). Franca, Luiz¹, Leal, Marcelo¹, Pimenta, Leandro¹, Chiarini-Garcia, Helio¹, Silva, Jurupytan², Guimaraes, Diva², ¹ Federal University of Minas Gerais, Belo Horizonte, MG, Brazil² Federal University of Para, Belem, PA, Brazil