Twin Production by Embryo Transfer in Japanese Black-Holstein Crossbred Cows

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

Calving traits, postpartum reproduction and growth of calves in 28 Japanese Black-Holstein crossbred cows pregnant with twins including 3 cows with triplets by embryo transfer were compared with the data of 60 crossbred cows pregnant with single calves. After calving, all the cow-calf pairs were fed mainly roughage, grazed on pasture during summer and fed with grass silage during the winter season. No concentrate supplement for calves was given. Gestation length of cows giving birth to twins and calf birth weight were shorter by 8 days and lighter by 6 kg compared with cows giving birth to single calves, respectively. Significantly (P

作成者 Osamu SUZUKI Mari AOKI Koji KIMURA
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 131
終了ページ 138
言語 eng