Comparison of Resistance to Theileria sergenti Infection between Holstein and Japanese Black Cattle under Grazing Conditions

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X

To analyze the resistance against Theileria sergenti infection in Holstein and Japanese Black cattle under field conditions, clinical, hematological and parasitological findings in these breeds of cattle that were grazed in the same pasture were examined during the grazing period. Holstein cattle showed a higher level of parasitemia than Japanese Black. With the progression of parasitemia, packed cell volume (PCV) decreased in both breeds and the minimum value of PCV recorded in Japanese Black was higher than in Holstein. The daily gain rate was higher for Japanese Black cattle than Holstein. These results suggest that the Japanese Black cattle display a higher resistance to T. sergenti infection than the Holstein under field conditions, based on a previous infection test carried out under experimental conditions without external factors.

作成者 Yutaka TERADA Yoshihiro KARIYA Shinichi TERUI Shigeru SHIOYA Shinya SHIMIZU Kozo FUJISAKI
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 219
終了ページ 223
言語 eng