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<p>The use of nano-selenium (Nano-Se) in the rabbit industry has gained attention as an optimal selenium source due to its potential benefits. This study evaluated the effects of varying levels of Nano-Se in drinking water on growth, carcass traits, blood profiles, microbial counts, and economic efficiency in growing rabbits. Seventy-two male V-line rabbits (five weeks old) were divided into four groups: a control group (T1, 0 ppm Nano-Se) and three treatment groups receiving Nano-Se at 0.1 ppm (T2), 0.2 ppm (T3), and 0.3 ppm (T4) for eight weeks. Results showed significant improvements (<i>p</i> &lt; 0.01) in growth performance, including final body weight, weight gain, feed intake, and feed conversion ratio, particularly at 0.1 ppm. Carcass yield and haemato-biochemical markers also improved significantly, with higher Nano-Se levels (0.2 and 0.3 ppm) enhancing kidney and liver functions and antioxidant activity, as reflected by reduced urea, AST, and MAD levels. Additionally, Nano-Se supplementation reduced pathogenic bacterial counts in the cecum, particularly <i>Escherichia coli</i> and <i>Clostridium</i> spp., and improved the total bacterial count at higher doses. Economically, Nano-Se supplementation decreased production costs and significantly increased net profit and efficiency, especially at the 0.1 ppm dose. In conclusion, Nano-Se, particularly at 0.1 ppm in drinking water, improved growth, health, and economic outcomes, positioning it as a valuable supplement for sustainable rabbit farming.</p>

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Effects of incremental nano-selenium supplementation on growth performance, carcass traits, blood profiles, and economic efficiency in V-line rabbits

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月10日

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  • Ali S. El-Shafey,
  • Ayman H. Abd El-Aziz,
  • Saber S. Hassan,
  • Mustafa Shukry,
  • Nagi M. El-Shafai,
  • Mohamed S. Moharam

摘要

The use of nano-selenium (Nano-Se) in the rabbit industry has gained attention as an optimal selenium source due to its potential benefits. This study evaluated the effects of varying levels of Nano-Se in drinking water on growth, carcass traits, blood profiles, microbial counts, and economic efficiency in growing rabbits. Seventy-two male V-line rabbits (five weeks old) were divided into four groups: a control group (T1, 0 ppm Nano-Se) and three treatment groups receiving Nano-Se at 0.1 ppm (T2), 0.2 ppm (T3), and 0.3 ppm (T4) for eight weeks. Results showed significant improvements (p < 0.01) in growth performance, including final body weight, weight gain, feed intake, and feed conversion ratio, particularly at 0.1 ppm. Carcass yield and haemato-biochemical markers also improved significantly, with higher Nano-Se levels (0.2 and 0.3 ppm) enhancing kidney and liver functions and antioxidant activity, as reflected by reduced urea, AST, and MAD levels. Additionally, Nano-Se supplementation reduced pathogenic bacterial counts in the cecum, particularly Escherichia coli and Clostridium spp., and improved the total bacterial count at higher doses. Economically, Nano-Se supplementation decreased production costs and significantly increased net profit and efficiency, especially at the 0.1 ppm dose. In conclusion, Nano-Se, particularly at 0.1 ppm in drinking water, improved growth, health, and economic outcomes, positioning it as a valuable supplement for sustainable rabbit farming.