乳用種子牛の生後24時間の自然吸乳行動

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書誌事項

タイトル別名
  • Natural Suckling Behaviour in Dairy Calves during the First Twenty Four Hours after Birth
  • ニュウヨウシュ コウシ ノ セイゴ 24ジカン ノ シゼン キュウニュウ コウ

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抄録

Natural suckling behaviour of thirty-seven dairy calves during twenty-four hours after birth was observed via TV cameras and recorded. All calves stood during the observation time. The time taken by calves to stand was 73±63 min(M±SD)and over 80% of the calves stood within 90min after birth. The average time taken to the first suckling was 264±279 min, excluding one which failed to suckle during observation. Eighty one % of the calves started suckling during the first eight hours after birth. These measurements varied remarkably and no significant relationship was found to number of calvings of the dam, length of the pregnancy, sex of the calf, body weight at birth and time of the birth. Total time of standing and walking during observation was 350±87 min, much less than that of the dams(720±177 min). During the 1st-5th hours after birth, more time was spent for standing and walking than latter. Suckling spells were 10.1±5.5 during the 24 hours with the total time being 63.6±31.3min and actual suckling time 33.0±16.2min. The calves sucked fore-teats more than rear-teats(74:26, % in suckling time). The calf stood on right or left side of the dam and sucked generally the teats of the side(95.9% in time). Sucklings from the lying dam(1.7%)and through the hind legs of the dam(0.4%)were observed rarely.

収録刊行物

  • 日本畜産学会報

    日本畜産学会報 50 (11), 778-781, 1979

    公益社団法人 日本畜産学会

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