• Title/Summary/Keyword: Reproductive

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Reproductive Management with Ultrasound Scanner-monitoring System for a High-yielding Commercial Dairy Herd Reared under Stanchion Management Style

  • Takagi, M.;Yamagishi, N.;Lee, I.H.;Oboshi, K.;Tsuno, M.;Wijayagunawardane, M.P.B.
    • Asian-Australasian Journal of Animal Sciences
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    • v.18 no.7
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    • pp.949-956
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    • 2005

  • The weekly ultrasound scanner (US) observations of reproductive organs in a commercial dairy herd with the popular stanchion style management were conducted for over 26 months. Based on reproductive records, the following were evaluated: 1) the effect of postpartum period commencement of US monitoring on herd reproductive efficacy, and 2) the effectiveness of a US monitoring-based diagnosis and subsequent treatments of reproductive disorders on postpartum reproductive efficiency. The reproductive parameters of cows, which were subjected to US monitoring between Days 30-40 (Day 0 = day of parturition), Days 41-50, Days 51-60, and above Day 61, were compared. The reproductive parameters of cows diagnosed as having reproductive disorders (RD) with US monitoring before or after the first artificial insemination (AI) were also compared. It was found that the day of commencement of US monitoring in cows diagnosed with and without RD significantly affected the period towards the first AI and the open period. In particular, cystic follicles and anoestrus detected either before or after the first AI significantly affected herd reproductive efficiency. The implementation of US monitoring improved reproductive efficiency by reducing the open period and increasing the number of milking cows in the herd. The results of this field trial indicate that the postpartum reproductive management of dairy cows with the use of the US monitoring system is one strategy to improve reproductive efficiency, especially in a high-yielding dairy herd reared stanchion management style.

  • https://doi.org/10.5713/ajas.2005.949 인용 PDF KSCI

Improvement of reproductive performance by the application of reproductive herd health program in high yielding dairy herds (고능력 젖소 축군의 집단번식관리프로그램 적용에 의한 번식효율의 개선)

  • Rho, Kyung-Soo;Kim, Ui-Hyung;Nam, Hyun-Wook;Suh, Guk-Hyun;Kang, Hyun-Gu;Kim, Ill-Hwa
    • Korean Journal of Veterinary Research
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    • v.44 no.2
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    • pp.293-301
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    • 2004

  • We investigated the effect of reproductive herd health program (RHHP) on the reproductive performance in high yielding dairy herds. Data collected from 205 lactations at Boeun County, Chungbuk from April 2001 to Dec. 2003 included postpartum reproductive and metabolic diseases, body condition score (BCS), reproductive performance and milking records. First we compared the reproductive performance of cows without RHHP (pre-RHHP group) and cows with RHHP (RHHP group). Intervals from calving to first service (99.6 vs. 81.8 days) and to conception (160.3 vs. 131.8 days) were shorter in the RHHP group than in the pre-RHHP group. Secondly, we determined the effect of milk yield (305 days) on the occurrence of postpartum diseases, BCS changes, and reproductive performance in cows under RHHP. The occurrence of metritis and metabolic diseases were greater in the over-10,000 kg group than in the under-10,000 kg group. The over-10,000 kg group lost more body condition than the under-10,000 kg group from calving to month 3 postpartum. Nevertheless, reproductive performance did not differ between the two groups. These results indicate that reproductive performance can be improved by the application of RHHP in high yielding dairy herds and that reproductive performance in the cows under RHHP are not affected by high milk yielding.

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Intravenous immunoglobulin G in women with reproductive failure: The Korean Society for Reproductive Immunology practice guidelines

  • Sung, Nayoung;Han, Ae Ra;Park, Chan Woo;Park, Dong Wook;Park, Joon Cheol;Kim, Na Young;Lim, Kyung Sil;Shin, Ji Eun;Joo, Chang Woo;Lee, Seung Eun;Kim, Jae Won;Lee, Sung Ki;IVIG Task Force Korean Society for Reproductive Immunology
    • Clinical and Experimental Reproductive Medicine
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    • v.44 no.1
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    • pp.1-7
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    • 2017

  • The task force of the Korean Society for Reproductive Immunology recommends intravenous immunoglobulin G treatment in women with reproductive failure, including recurrent pregnancy loss and/or repeated implantation failure, who show cellular immune factors such as abnormal natural killer cell levels, natural killer cell cytotoxicity, and/or type 1 T helper immunity.

  • https://doi.org/10.5653/cerm.2017.44.1.1 인용 PDF KSCI