Development of a novel diagnostic criteria of subclinical endometritis and a program that enhances reproductive functions in postpartum cows

2011 Fiscal Year Final Research Report

• Project/Area Number: 21580385
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Clinical veterinary science
• Research Institution: Iwate University
• Principal Investigator: OSAWA Takeshi 岩手大学, 農学部, 准教授 (90302059)
• Co-Investigator(Kenkyū-buntansha): HIRATA Toh-ichi 岩手大学, 農学部, 助教 (20241490)
• Project Period (FY): 2009 – 2011
• Keywords: 臨床繁殖 / 産科

Research Abstract

The aim of this study was to establish systematic and objective diagnostic methods of subclinical endometritis in early postpartum Japanese black and Holstein cows. The results of the study suggest that endometrial PMN% could be a suitable parameter for predicting fertility, change in size of the uterine horns by ultrasonography has limitations as a diagnosis for subclinical endometritis, and unsaturated fatty acid supplementation to dairy cows during late dry period may hasten uterine involutions postpartum period.

Research Products

• [Journal Article] Evaluation of reproductive tract infection during early postpartum period and its relationship with subsequent reproductive performance in high-producing dairy cows, Reprod (2012)
  • Author(s): Senosy, W.S., Uchiza, M., Tameoka, N., Izaike, Y., Osawa, T.
  • Journal Title: Dom. Anim. Volume: Vol.47 Pages: 203-207
  • Peer Reviewed
• [Journal Article] Validation of a direct time-resolved fluoroimmunoassay for progesterone in milk from dairy and beef cows (2011)
  • Author(s): Oku, Y., Osawa, T., Hirata, T-I., Kubo, M., Kon, N., Akasaka, S., Senosy, W. S., Takahashi, T., Izaike, Y.
  • Journal Title: Vet. J. Volume: Vol.190 Pages: 244-248
  • Peer Reviewed
• [Journal Article] Reproductive tract defence and disease in postpartum dairy cows (2011)
  • Author(s): LeBlanc, S., Osawa, T., Dubuc, J.
  • Journal Title: Theriogenology Volume: Vol.76 Pages: 1610-1618
  • Peer Reviewed
• [Journal Article] Effect of follicular aspiration at the onset of progesterone-based timed artificial insemination protocol on the follicular dynamics and fertility in early postpartum Japanese black cows (2011)
  • Author(s): Hirata, T-I., Kon, N., Sugiyama, A., Sato, M., Osawa, T.
  • Journal Title: J. Reprod. Dev. Volume: Vol.57 Pages: 613-619
  • Peer Reviewed
• [Presentation] Calving season influences on energy metabolites trait, body condition scoring and ovarian resumption in high producing dairy cows. (2011)
  • Author(s): Senosy, W., Osawa, T., Nanae, T., Uchiza, M., Izaike, Y.
  • Organizer: The 15th annual European Society for Domestic Animal Reproduction Conference
  • Place of Presentation: Antalya (Turkey)
  • Year and Date: 20110915-17
• [Presentation] Inflammation and infection of the reproductive tract in dairy cows (2011)
  • Author(s): Osawa, T., Neves, R. C., LeBlanc, S. J.
  • Organizer: Joint Annual Meeting between the American Dairy Science Association and the American Society of Animal Science
  • Place of Presentation: New Orleans (USA)
  • Year and Date: 20110710-14
• [Presentation] Endometrial cytology and vaginal discharge score profiles during PRID-based synchronization program in suckled Japanese black cows (2010)
  • Author(s): Osawa T., Yoshimoto, M., Kon, N., Hirata, T-I., Izaike, Y.
  • Organizer: 26^<th> World Buiatric Congress
  • Place of Presentation: Santiago (Chile)
  • Year and Date: 20101114-18
• [Book] 獣医繁殖学第4版 (2011)
  • Author(s): 居在家義昭、大澤健司, 他
  • Total Pages: 568
  • Publisher: 文永堂出版
• [Book] 牛の繁殖管理における超音波画像診断 (2010)
  • Author(s): 石井一功、磯日出夫、大澤健司, 他
  • Total Pages: 134
  • Publisher: 文永堂出版
• [Book] 子牛の科学 (2009)
  • Author(s): 泉 賢一、板橋久雄、上田宏一郎、遠藤洋、扇勉、大坂郁夫、大澤健司, 他
  • Total Pages: 290
  • Publisher: チクサン出版社
• [Patent(Industrial Property Rights)] 吐出装置 (2010)
  • Inventor(s): 片野圭二,田村孝,大澤健司,小田島尚行,首藤文榮
  • Industrial Property Rights Holder: 岩手大学
  • Patent Publication Number: 特許、特開2010-279497
  • Filing Date: 20101200