Conception rate of Holstein and Japanese Black cattle following embryo transfer in southwestern Japan

Conception rate of Holstein and Japanese Black cattle following embryo transfer in southwestern Japan

This study aimed to quantify and compare conception rates to embryo transfer (ET) of Holstein and Japanese Black cattle in southwestern Japan. A 10‐year retrospective epidemiological survey was conducted. The recipient numbers for Holstein and Japanese Black cattle was 621 and 527, respectively. Con...

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Veröffentlicht in:Animal science journal 2018-08, Vol.89 (8), p.1073-1078
Hauptverfasser: Nabenishi, Hisashi, Sugino, Fumiaki, Konaka, Rui, Yamazaki, Atusi
Format: Artikel
Sprache:eng
Schlagworte:
Animals
Bovidae
Cattle
Cattle - physiology
conception rate
Embryo transfer
Embryo Transfer - statistics & numerical data
Epidemiology
Female
Fertilization - physiology
Humidity
Japan - epidemiology
Retrospective Studies
Seasons
Temperature
temperature–humidity index
Time Factors
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Beschreibung
Zusammenfassung:This study aimed to quantify and compare conception rates to embryo transfer (ET) of Holstein and Japanese Black cattle in southwestern Japan. A 10‐year retrospective epidemiological survey was conducted. The recipient numbers for Holstein and Japanese Black cattle was 621 and 527, respectively. Conception rates of Holstein and Japanese Black cattle during the study period were 45.4% and 42.3%, respectively. There was no significant difference between both breeds. However, a different trend of conception rate to ET in Holstein and Japanese Black cattle was observed. In Holstein cattle, conception rate in August to October was lower than in the other months and was significantly lower (p 
ISSN:1344-3941
1740-0929
DOI:10.1111/asj.13042