Selection indices for non-wilted silage preparation in timothy(<i>Phleum pratense</i> L.)

DOI Web Site

Bibliographic Information

Other Title
  • チモシー（<i>Phleum pratense</i> L.）における無予乾サイレージ調製に適する選抜指標
  • チモシー(Phleum pratense L.)における無予乾サイレージ調製に適する選抜指標
  • チモシー(Phleum pratense L.)ニ オケル ムヨカンサイレージ チョウセイ ニ テキスル センバツ シヒョウ

Search this article

Abstract

<p>Breeding improvements in the fermentation quality of timothy (Phleum pratense L.) silage should result in enhanced livestock productivity. This study investigated selection indices useful for improving the fermentation quality of non-wilted timothy-based silage preparations. Possible relevant indices were investigated using eight timothy clones in 2013 to 2014 in Kunneppu, Japan. Some fermentation quality indices, pH, V-SCORE, and Mr. freak rating, but not volatile basic nitrogen/total nitrogen, showed moderate to high broad-sense heritability values, suggesting the potential of breeding improvement. Dry matter in harvesting, water-soluble carbohydrate (WSC) and low-digestible fiber contents showed moderate to strong genetic correlations with most of the fermentation quality indices. Both multiple regression and discriminant analyses selected dry matter in harvesting and WSC contents. The latter also showed a high indirect selection efficiency for all the fermentation quality indices. Therefore, the indirect selection of the WSC and dry matter in harvesting contents will likely be useful in improving the silage fermentation quality of non-wilted timothy. In addition, the selection of low-digestible fiber content is also potentially useful for the production of good quality silage.</p>

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top