Scholarlink

<p>This study evaluated the effect of <i>T. diversifolia</i> on the fatty acid (FA) profile of milk, with and without lipid supplementation, through two trials. Trial 1 compared a monoculture system of Kikuyu grass—<i>Cenchrus clandestinus</i> (Hochst. ex Chiov.) Morrone (MONO)—with a silvopastoral system (ISS) incorporating Kikuyu grass and wild sunflower (5% of forage dry matter, FDM). The objective was to assess the effect of shrubs as grazing forage on the FA profile of dairy Holstein cows, using a Latin rectangle design with two periods and 12 cows (experimental units) in a crossover arrangement. Trial 2 evaluated the effect of increasing wild sunflower in the forage diet (17.5% of FDM) and supplementing concentrates with different lipid sources (LS1: Concentrate with commercial saturated rumen bypass fat; LS2: Concentrate with 1% soybean oil, 0.5% fish oil, and 1.5% rumen bypass omega-3 fat; LS3: Concentrate with 2.5% soybean oil and 0.5% fish oil). A completely randomized block design with a 2 × 3 factorial arrangement (two production systems × three lipid sources in the concentrate) was used. The milk FA profile was positively influenced by wild sunflower intake (5% FDM in trial 1, 17.5% in trial 2) and soybean/fish oil inclusion (trial 2). In trial 1, trans-vaccenic acid (TVA) increased by 10% compared to MONO. In trial 2, TVA increased by 41%. Overall, incorporating wild sunflower and lipid supplements into the ISS diet improved milk nutritional quality.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Silvopastoral systems with wild sunflower (Tithonia diversifolia (Hemsl.) A. Gray) and lipid supplementation: a strategy to improve the fatty acid profile of milk in dairy livestock systems

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年5月19日

查看全文
  • Jhon Jairo Lopera-Marín,
  • Joaquín Angulo-Arizala,
  • Liliana Mahecha-Ledesma

摘要

This study evaluated the effect of T. diversifolia on the fatty acid (FA) profile of milk, with and without lipid supplementation, through two trials. Trial 1 compared a monoculture system of Kikuyu grass—Cenchrus clandestinus (Hochst. ex Chiov.) Morrone (MONO)—with a silvopastoral system (ISS) incorporating Kikuyu grass and wild sunflower (5% of forage dry matter, FDM). The objective was to assess the effect of shrubs as grazing forage on the FA profile of dairy Holstein cows, using a Latin rectangle design with two periods and 12 cows (experimental units) in a crossover arrangement. Trial 2 evaluated the effect of increasing wild sunflower in the forage diet (17.5% of FDM) and supplementing concentrates with different lipid sources (LS1: Concentrate with commercial saturated rumen bypass fat; LS2: Concentrate with 1% soybean oil, 0.5% fish oil, and 1.5% rumen bypass omega-3 fat; LS3: Concentrate with 2.5% soybean oil and 0.5% fish oil). A completely randomized block design with a 2 × 3 factorial arrangement (two production systems × three lipid sources in the concentrate) was used. The milk FA profile was positively influenced by wild sunflower intake (5% FDM in trial 1, 17.5% in trial 2) and soybean/fish oil inclusion (trial 2). In trial 1, trans-vaccenic acid (TVA) increased by 10% compared to MONO. In trial 2, TVA increased by 41%. Overall, incorporating wild sunflower and lipid supplements into the ISS diet improved milk nutritional quality.