Sopian Yusup, Sivapirunthep Panneepa, Jayanegara Anuraga, Chaosap Chanporn
Doctoral Program in Innovative Tropical Agriculture, School of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand.
Department of Agricultural Education, School of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand.
Animals (Basel). 2025 Jul 12;15(14):2062. doi: 10.3390/ani15142062.
Hemp ( L.) products have gained attention in poultry nutrition for their rich content of polyunsaturated fatty acids (PUFAs), bioactive compounds, and potential functional benefits. However, findings on their impact on laying-hen performance, egg quality, and yolk fatty acid profiles have been inconsistent. This meta-analysis aimed to evaluate the effects of dietary hemp products on laying-hen performance, egg quality traits, and yolk fatty acid composition, while exploring potential sources of heterogeneity across studies. A comprehensive literature search identified 21 studies that met the inclusion criteria. A random-effects model was used to calculate standardized mean differences (SMDs) with 95% confidence intervals (CIs) for various outcomes, including production performance, egg quality, and yolk fatty acid profiles. Subgroup and meta-regression analyses assessed the influence of factors such as inclusion level, hen age, and hemp product type. The results showed that hemp supplementation had no significant effect on hen-day production, egg mass, feed conversion ratio, or feed intake. However, yolk redness (SMD = 4.40; 95% CI: 2.46, 6.33; < 0.001) and yellowness (SMD = 4.45; 95% CI: 2.75, 6.16; < 0.001) were significantly enhanced. Hemp feeding also increased n-3 PUFA levels in egg yolk, including C18:3n3, C20:5n3, and C22:6n3, while reducing saturated and monounsaturated fatty acids. Subgroup analysis indicated that inclusion levels > 10% and hen age ≤ 25 weeks were associated with slight reductions in hen-day production, whereas older hens (>25 weeks) showed increased egg weight. In conclusion, hemp products can enrich yolk pigmentation and n-3 PUFA content in eggs, supporting the production of functional, value-added eggs without compromising the laying-hen performance.
大麻（L.）产品因其富含多不饱和脂肪酸（PUFA）、生物活性化合物以及潜在的功能益处，在禽类营养领域受到了关注。然而，关于它们对蛋鸡生产性能、蛋品质和蛋黄脂肪酸谱的影响，研究结果并不一致。这项荟萃分析旨在评估日粮中添加大麻产品对蛋鸡生产性能、蛋品质性状和蛋黄脂肪酸组成的影响，同时探索不同研究之间潜在的异质性来源。一项全面的文献检索确定了21项符合纳入标准的研究。采用随机效应模型计算各种结果的标准化平均差异（SMD）及其95%置信区间（CI），这些结果包括生产性能、蛋品质和蛋黄脂肪酸谱。亚组分析和荟萃回归分析评估了诸如添加水平、母鸡年龄和大麻产品类型等因素的影响。结果表明，添加大麻对日产蛋量、蛋重、饲料转化率或采食量没有显著影响。然而，蛋黄红色度（SMD = 4.40；95% CI：2.46，6.33；P < 0.001）和黄色度（SMD = 4.45；95% CI：2.75，6.16；P < 0.001）显著提高。饲喂大麻还增加了蛋黄中n - 3多不饱和脂肪酸的含量，包括C18:3n3、C20:5n3和C22:6n3，同时降低了饱和脂肪酸和单不饱和脂肪酸的含量。亚组分析表明，添加水平> 10%且母鸡年龄≤ 25周与日产蛋量略有下降有关，而年龄较大的母鸡（> 25周）蛋重增加。总之，大麻产品可以丰富鸡蛋中的蛋黄色素沉着和n - 3多不饱和脂肪酸含量，有助于生产功能性、增值鸡蛋，同时不影响蛋鸡的生产性能。
