サンタガートルーディス種×日本短角種F₁,日本短角種および両者の交雑種の子牛の離乳前形質の比較

• 樋口 幹人

  農林水産省東北農業試験場

• 長嶺 慶隆

  農林水産省東北農業試験場 農林水産省農業生物資源研究所

• 花田 博文

  農林水産省東北農業試験場 農林水産省畜産試験場

• 粟田 崇

  農林水産省東北農業試験場

書誌事項

タイトル別名

• Comparisons of Santa Gertrudis×Japanese Shorthorn F₁, Japanese Shorthorn and their Reciprocal Crosses for Preweaning Traits
• Comparisons of Santa Gertrudis Japanese

抄録

For the improvement of Japanese Shorthorn (JS) calves in growth on pasture, Santa Gertrudis (SG)×JS F₁ calves were produced by artificial insemination (AI) of SG semen into JS cows. The backcrosses (F₁×JS and JS×F₁) were produced both by mating an F₁ sire with JS dams, and by AI with JS semen to F₁ cows. All the calves were born from February to April, then kept on pasture with their dams from May to October. Birthweight, gestation length and average daily gain in the grassland were compared among F₁, F₁×JS, JS×F₁ and straightbred JS. F₁ calves showed significantly higher birthweights than purebred JS calves. The average daily gain in the grassland was also greater, although not significant, for F₁ than for JS. JS×F₁ calves exhibited comparable growth to F₁ calves on pasture, whereas, F₁×JS calves grew slower than JS calves. These results indicate that the utilization of SG×JS F₁ calves is one of the effective ways to improve the growthof calves on pasture, and that, in the utilization of the backcrosses, keeping JS×F₁ calves with F₁ dams is prefera-ble to-keeping F₁×JS calves with JS dams.

収録刊行物

• 日本畜産学会報

  日本畜産学会報 69 (4), 326-332, 1998

  公益社団法人 日本畜産学会

キーワード

• Santa Gertrudis
• Japanese Shorthorn
• Backcrosses
• Preweaning traits
• Grazing

詳細情報

• CRID: 1390001205196186240
• NII論文ID: 10021726281
• NII論文ID: 10020395506
• NII書誌ID: AN00195188
• DOI: 10.2508/chikusan.69.326
• ISSN: 18808255
• ISSN: 00215309
• ISSN: 1346907X
• NDL書誌ID: 4471123
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4471123
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可