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<p>The purpose of this study was to evaluate the effect of sesame oil (SO) supplementation on Awassi ewes during the pre-partum and post-partum periods. Variables measured included nutrient intake and digestibility, colostrum quality, milk production and composition, body weight changes in the ewes and their lambs, and blood biochemistry. About 35 days before giving birth, 32 pregnant ewes with an initial body weight of 59.7 ± 2.25&#xa0;kg were selected and divided into two groups of 16 ewes each: one group received no sesame oil (CON), and the other group (SO) received sesame oil included in the diet at 1.5% of the dietary dry matter (DM). Ewes were housed individually (0.75 × 1.5&#xa0;m) during the experiment. Body weight was recorded at 8:00&#xa0;A.M. on days − 35, -32, 0 (parturition), 14, 28, and 56. Milk yield was measured on days 14, 28, and 56. Blood samples were taken at the end of both the pre-partum and post-partum periods. After lactation ended, five ewes from each group were selected and placed in metabolic crates (0.80 × 1.05&#xa0;m) designed to separate feces and urine, allowing for the measurement of nutrient digestibility and nitrogen balance. During both periods, the intake of ether extract (EE) and metabolizable energy was greater (<i>P</i> &lt; 0.05) in ewes fed the SO diet compared with those fed the CON diet. Likewise, colostrum fat and total solids content were greater (<i>P</i> &lt; 0.05) in the SO groups compared with the CON group. Ewes fed on the SO had a greater daily milk yield, milk fat, lactose, and total solids (grams/day) than the CON group. Nutrient digestibility did not differ between treatments, except for the digestibility of EE, which was greater for ewes fed on the SO diet than for ewes fed on the CON diet. No differences were observed in most of the blood variables measured, except for the serum low-density lipoprotein and alanine aminotransferase content, which were less (<i>P</i> &lt; 0.05) in SO ewes than in CON ewes during the prepartum period. In summary, the results demonstrated that sesame oil supplementation enhanced milk yield and composition, with no limited effects on nutrient digestibility and no adverse effects on the animal health.</p>

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The effects of sesame oil supplementation on the performance of Awassi ewes and their offspring

  • 期刊论文

  • 发表日期：

    2026年1月27日

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  • Belal S. Obeidat,
  • Hadil S. Subih,
  • Mysaa Ata,
  • Michael A. Ballou,
  • Michael L. Galyean,
  • Mohammad D. Obeidat,
  • Thaer A. Migdady,
  • Linda Alyahya

摘要

The purpose of this study was to evaluate the effect of sesame oil (SO) supplementation on Awassi ewes during the pre-partum and post-partum periods. Variables measured included nutrient intake and digestibility, colostrum quality, milk production and composition, body weight changes in the ewes and their lambs, and blood biochemistry. About 35 days before giving birth, 32 pregnant ewes with an initial body weight of 59.7 ± 2.25 kg were selected and divided into two groups of 16 ewes each: one group received no sesame oil (CON), and the other group (SO) received sesame oil included in the diet at 1.5% of the dietary dry matter (DM). Ewes were housed individually (0.75 × 1.5 m) during the experiment. Body weight was recorded at 8:00 A.M. on days − 35, -32, 0 (parturition), 14, 28, and 56. Milk yield was measured on days 14, 28, and 56. Blood samples were taken at the end of both the pre-partum and post-partum periods. After lactation ended, five ewes from each group were selected and placed in metabolic crates (0.80 × 1.05 m) designed to separate feces and urine, allowing for the measurement of nutrient digestibility and nitrogen balance. During both periods, the intake of ether extract (EE) and metabolizable energy was greater (P < 0.05) in ewes fed the SO diet compared with those fed the CON diet. Likewise, colostrum fat and total solids content were greater (P < 0.05) in the SO groups compared with the CON group. Ewes fed on the SO had a greater daily milk yield, milk fat, lactose, and total solids (grams/day) than the CON group. Nutrient digestibility did not differ between treatments, except for the digestibility of EE, which was greater for ewes fed on the SO diet than for ewes fed on the CON diet. No differences were observed in most of the blood variables measured, except for the serum low-density lipoprotein and alanine aminotransferase content, which were less (P < 0.05) in SO ewes than in CON ewes during the prepartum period. In summary, the results demonstrated that sesame oil supplementation enhanced milk yield and composition, with no limited effects on nutrient digestibility and no adverse effects on the animal health.