Department of Poultry Science, Faculty of Animal Husbandry and Veterinary Sciences, The University of Agriculture, Peshawar, Khyber Pakhtunkhwa, Pakistan.
Department of Zoology, Government College University, Faisalabad, Pakistan.
Vet Q. 2024 Dec;44(1):1-10. doi: 10.1080/01652176.2024.2367214. Epub 2024 Jun 18.
The aim of the present study was to assess the effects of different levels of hempseed (HS) on growth performance, immunity and gut health in broiler chickens. A total of 192 Hubbard broiler chicks were divided into four groups and fed HS as follow: control (HS0), HS 10% (HS-10), HS 15% (HS-15) and HS 20% (HS-20). The study on HS supplementation in broilers revealed no significant impacts on feed intake during the starter ( = .2294) and finisher phases ( = .2294), or overall ( = .0944), though numerical increases were noted with higher HS levels. Body weight gain showed no significant influence in the starter and finisher phases, with overall weight gain also not significantly different ( = .0944), but numerically higher with increased HS. Feed conversion ratio was unaffected in the starter ( = .6986) and finisher phases ( = .6425), and overall ( = .2218). Dressing percentage ( = .1062) and mortality ( = .1631) were not significantly altered, but HS-20 had the highest dressing percentage and lowest mortality numerically. White blood cell counts increased significantly ( = .0377), especially in HS-15 and HS-20 groups. IgM and IgG production was higher in HS-20 on day 28 ( = .021). Gut pH ( > .05) and intestinal histomorphology ( > .05) were not significantly affected, although villus height increased numerically with higher HS levels. These results suggest potential benefits of HS, especially at higher inclusion levels. In conclusion, the obtained results indicated that HS incorporation into the diet of broilers did not affect the growth performance and gut health; however, the immune responses were significantly higher at 15 and 20% levels.
本研究旨在评估不同水平的大麻籽（HS）对肉鸡生长性能、免疫力和肠道健康的影响。将 192 只哈伯德肉鸡分为四组，分别饲喂以下 HS：对照组（HS0）、10%HS（HS-10）、15%HS（HS-15）和 20%HS（HS-20）。研究表明，HS 补充对肉鸡的饲料摄入量在育雏期（ = .2294）和育肥期（ = .2294）或总体（ = .0944）均无显著影响，尽管随着 HS 水平的提高，数值有所增加。育雏期和育肥期的体重增重均无显著影响，总体体重增重也无显著差异（ = .0944），但随着 HS 的增加，数值有所增加。饲料转化率在育雏期（ = .6986）和育肥期（ = .6425）以及总体（ = .2218）均不受影响。屠宰率（ = .1062）和死亡率（ = .1631）也未发生显著变化，但 HS-20 的屠宰率最高，死亡率最低。白细胞计数显著增加（ = .0377），尤其是在 HS-15 和 HS-20 组。第 28 天，HS-20 的 IgM 和 IgG 产量更高（ = .021）。肠道 pH（ > .05）和肠道组织形态学（ > .05）不受显著影响，但绒毛高度随 HS 水平的增加而数值增加。这些结果表明 HS 具有潜在的益处，尤其是在更高的添加水平下。综上所述，本研究结果表明，在肉鸡日粮中添加 HS 不会影响生长性能和肠道健康，但在 15%和 20%水平时，免疫反应显著增强。
