Department of Animal Nutrition and Nutritional Diseases, Faculty of Veterinary Medicine, Aydın Adnan Menderes University, Işıklı, Efeler, 09016, Aydın, Turkey.
Department of Animal Nutrition and Nutritional Diseases, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, İstiklal Campus, 15030, Burdur, Turkey.
Trop Anim Health Prod. 2021 Jan 7;53(1):80. doi: 10.1007/s11250-020-02530-0.
We investigated the effect of in-feed and/or in-litter supplemental humate against footpad dermatitis (FPD) in broilers fed diets based on barley. Three hundred and sixty 1-day-old Ross 308 broiler chickens were randomly distributed to 24 floor pens (4 treatments, each consisting of 6 replicate pens; 15 chickens per pen) as a completely randomized design with 2 × 2 factorial arrangement of two levels of supplemental humate in feed (0 and 1 g/kg feed) and litter (0 and 5 g/kg litter). Growth performance, intestinal viscosity, litter quality, and incidence and severity of FPD in broilers were measured. In addition, malondialdehyde (MDA) and superoxide dismutase (SOD) levels were determined in blood and footpad tissues of broilers with different FPD scores. The results revealed that there was no interaction between humate supplementation to feed and litter. Neither dietary nor litter supplementation of humate had a significant effect on growth performance, intestinal viscosity, litter quality, and occurrence of FPD. And also, MDA and SOD levels in serum and footpad tissue did not affect by either dietary or litter supplementation of humate. The presence of FPD (score 1) had no effect on MDA and SOD levels in serum, however, increased the MDA and SOD levels (P < 0.001, P = 0.001, respectively) in footpad tissue of broilers. The intestinal viscosity did not differ between FPD scores 0 and 1. In conclusion, findings of this experiment suggest that humate supplementation to feed and litter did not alleviate FPD development in broilers fed diets based on barley. In addition, the presence of FPD lesions increases the MDA and SOD levels in the footpad tissues.
我们研究了在以大麦为基础的日粮中添加饲料和/或垫料中的腐殖酸盐对肉鸡脚垫皮炎（FPD）的影响。将 360 只 1 日龄 Ross 308 肉鸡随机分配到 24 个地板笼（4 种处理，每个处理由 6 个重复笼组成；每个笼 15 只鸡），采用完全随机设计，饲料（0 和 1 g/kg 饲料）和垫料（0 和 5 g/kg 垫料）中腐殖酸盐的添加水平有两个水平。测量肉鸡的生长性能、肠道粘度、垫料质量以及肉鸡脚垫皮炎的发病率和严重程度。此外，还测定了不同 FPD 评分肉鸡血液和脚垫组织中的丙二醛（MDA）和超氧化物歧化酶（SOD）水平。结果表明，腐殖酸盐在饲料和垫料中的添加之间没有相互作用。饲料或垫料中添加腐殖酸盐对生长性能、肠道粘度、垫料质量以及 FPD 的发生均无显著影响。而且，血清和脚垫组织中 MDA 和 SOD 水平也不受饲料或垫料中腐殖酸盐的添加影响。FPD（评分 1）的存在对血清中 MDA 和 SOD 水平没有影响，但增加了肉鸡脚垫组织中 MDA 和 SOD 水平（P < 0.001，P = 0.001）。FPD 评分 0 和 1 之间的肠道粘度没有差异。综上所述，本实验结果表明，饲料和垫料中添加腐殖酸盐并不能缓解以大麦为基础日粮饲养的肉鸡 FPD 的发生。此外，FPD 病变的存在会增加脚垫组织中 MDA 和 SOD 的水平。
