ブタの枝肉横切断面脂肪面積割合と枝肉格付け成績との関連

• 鈴木 啓一

  宮城県畜産試験場

• 渡部 正樹

  宮城県畜産試験場

• 大友 良彦

  宮城県畜産試験場 宮城県経済農協連

• 佐藤 裕一

  宮城県畜産試験場

書誌事項

タイトル別名

• Relationship between Carcass Grade and Proportion of Fat in the Carcass Cross-sectional Area in Fattening Pigs
• ブタ ノ エダニク オウセツダンメン シボウ メンセキ ワリアイ ト エダニク

抄録

The relation between carcass grade and fat accumulation was examined by estimating genetic and phenotypic correlations among carcass grade, backfat thickness and carcass cross sectional areas of subcutaneous fat, intermuscular fat and total fat. Carcasses of 326 fattening pig were graded and the cross-section cut between the fourth and fifth thoracic vertebra was photographed for each animal for analyses of fat accumulation. Areas of cross-section, subcutaneous fat and intermuscular fat were analyzed by computer image analysis and fat accumulation around the loin was graded for seam fat score (1-5). Slaughtering season (I; Aug.-Nov., II; Dec.-Jan. and III; Feb.-March) significantly affected age at slaughtering and subcutaneous fat area and all the traits examines in this study were affected by sex except for carcass weight. Comparisons of these traits also show that carcasses graded as "upper class" were of pigs which were slaughtered at younger age than those of carcasses of lower classes. Carcasses graded as "upper class" and "middle class" had thicker backfat, larger subcutaneous and total fat areas and a higher seam fat score than those graded as "ordinary class" although there were no significant difference in intermuscular fat area among the classes. Backfat thickness was highly correlated to subcutaneous fat area (rG: 0.69, rP: 0.61, genetic and phenotypic, respectively), total fat area (rG : 0.74, rP: 0.55) and seam fat score (rG: 0.80, rP: 0.38), however, its correlation to intermuscular fat area was found to be poor (rG: 0.37, rP: 0.17). These results suggest that it may be necessary to incorporate fat accumulation in the carcass cross section into the carcass grading system so that carcass intermuscular fat accumulation is evaluated.

収録刊行物

• 日本畜産学会報

  日本畜産学会報 69 (1), 40-45, 1998

  公益社団法人 日本畜産学会

キーワード

• Carcass grade
• Carcass cross section
• Fat accumulation
• Pigs

詳細情報

• CRID: 1390282680172725248
• NII論文ID: 10021727037
• NII論文ID: 10012347091
• NII論文ID: 10020396262
• NII書誌ID: AN00195188
• DOI: 10.2508/chikusan.69.40
• ISSN: 18808255
• ISSN: 00215309
• ISSN: 1346907X
• NDL書誌ID: 4393333
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4393333
• 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