Elnesr Shaaban S, Abdel-Razik Abdel-Razik H, Elwan Hamada A M
Department of Poultry Production, Faculty of Agriculture, Fayoum University, Fayoum, Egypt.
Department of Histology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt.
J Anim Physiol Anim Nutr (Berl). 2022 Jan;106(1):110-117. doi: 10.1111/jpn.13543. Epub 2021 Mar 25.
The purpose of this study was to assess the effects of dietary humate substances (HS) and CloSTAT (Bacillus subtilis PB6) on the thyroid activity and histology, iron profile, blood haematology and performance of growing Japanese quail. A total of 216 unsexed 7-day-old quail chicks were randomly assigned to six groups. The first group was fed a basal diet (BD) without any additives (control); the 2nd group received BD plus 0.05% CloSTAT, the 3rd and 4th groups were given BD plus 0.4% and 0.8% HS, respectively; and the 5th and 6th groups were administered BD plus CloSTAT + 0.4% HS and BD plus CloSTAT + 0.8% HS, respectively. The results showed that the growth performance was improved with the addition of CloSTAT alone or in combination with 0.4% HS compared with the control. Haematological parameters, iron level and transferrin saturation % were significantly (p < 0.001) increased by feeding HS compared with the control group. Serum thyroxin and triiodothyronine levels were significantly (p = 0.001) increased by adding CloSTAT relative to the control. Supplementation of 0.8% HS caused deterioration in histomorphometry parameters of the thyroid gland, but these parameters were improved in response to CloSTAT compared with the control. In conclusion, dietary B. subtilis PB6 as CloSTAT or CloSTAT + 0.4% HS supplementation may be efficacious in enhancing the growth performance and boosting the thyroid activity of growing Japanese quail. Moreover, the addition of 0.4% or 0.8% HS to quail diets boosted their iron profile and haematological parameters.
本研究旨在评估日粮中腐殖酸盐物质（HS）和克洛STAT（枯草芽孢杆菌PB6）对生长中的日本鹌鹑甲状腺活性和组织学、铁指标、血液血液学及生产性能的影响。总共216只7日龄未分性别的鹌鹑雏鸡被随机分为六组。第一组饲喂不含任何添加剂的基础日粮（BD）（对照组）；第二组接受BD加0.05%克洛STAT，第三组和第四组分别给予BD加0.4%和0.8% HS；第五组和第六组分别给予BD加克洛STAT + 0.4% HS和BD加克洛STAT + 0.8% HS。结果表明，与对照组相比，单独添加克洛STAT或与0.4% HS联合添加可提高生长性能。与对照组相比，饲喂HS显著（p < 0.001）提高了血液学参数、铁水平和转铁蛋白饱和度%。相对于对照组，添加克洛STAT显著（p = 0.001）提高了血清甲状腺素和三碘甲状腺原氨酸水平。添加0.8% HS导致甲状腺组织形态计量学参数恶化，但与对照组相比，克洛STAT可改善这些参数。总之，日粮中添加枯草芽孢杆菌PB6作为克洛STAT或克洛STAT + 0.4% HS可能有效提高生长中的日本鹌鹑的生长性能并增强其甲状腺活性。此外，在鹌鹑日粮中添加0.4%或0.8% HS可提高其铁指标和血液学参数。
