Rocha Luana Ledz Costa Vasconcelos, Nepomuceno Rafael Carlos, Silva Valquíria Sousa, Mariano Lidia Sarah Dias, Gomes Francisco Cayo Pereira, Freitas Cirliane de Abreu, Evangelista Janaína Serra Azul Monteiro, Xavier Júnior Francisco Antônio Félix, de Carvalho Isadora Oliveira, Trevisan Maria Teresa Salles, Freitas Ednardo Rodrigues
Animal Science Department, Federal University of Ceará, Ceará, Brazil.
Veterinary School - State University of Ceará, Ceará, Brazil.
Trop Anim Health Prod. 2025 Jun 9;57(5):253. doi: 10.1007/s11250-025-04493-6.
The objective of this study was to evaluate the effects of combinations of calcium anacardate (CaA) and citric acid (CA) in the diet of layers between the 1st and 8th weeks of age, reared on the floor. A total of 960 1-day-age chicks were used in a completely randomized design with 8 treatments and 6 replicates with 20 birds per treatment. The treatments consisted of two control diets, negative (no additives) and positive (with anticoccidial additive-salinomycin), and 6 diets with the combinations: 0.25% CaA + 0.25% CA; 0.50% CaA + 0.25% CA; 0.50% CaA + 0.50% CA; 0.75% CaA + 0.25% CA; 0.75% CaA + 0.50% CA; and 0.75% CaA + 0.75% CA. Performance, intestinal morphometry, blood biochemical parameters and bone quality were assessed. Birds fed the diet containing salinomycin showed lower feed intake, average weight at 8 weeks and weight gain, with no influence of the treatments on feed conversion and uniformity. There was no influence of the treatments on the morphometry parameters in the duodenum, however, it was observed that in the jejunum and ileum, the birds fed diets containing the different combinations of CaA + CA had the lowest crypt width values. The addition of CaA + CA reduced the concentration of uric acid in the blood and the treatment with salinomycin affected bone quality. Therefore, the use of salinomycin is not recommended for layers in the growth phase, while the combination of 0.25% CaA + 0.25% CA can be used safely for these animals.
本研究的目的是评估1至8周龄地面饲养蛋鸡日粮中腰果酚钙（CaA）和柠檬酸（CA）组合的效果。总共960只1日龄雏鸡采用完全随机设计，有8种处理，每种处理6个重复，每个重复20只鸡。处理包括两种对照日粮，阴性（无添加剂）和阳性（含抗球虫添加剂盐霉素），以及6种含以下组合的日粮：0.25% CaA + 0.25% CA；0.50% CaA + 0.25% CA；0.50% CaA + 0.50% CA；0.75% CaA + 0.25% CA；0.75% CaA + 0.50% CA；以及0.75% CaA + 0.75% CA。评估了生产性能、肠道形态学、血液生化参数和骨骼质量。饲喂含盐霉素日粮的鸡采食量、8周龄平均体重和体重增加较低，各处理对饲料转化率和均匀度无影响。各处理对十二指肠形态学参数无影响，然而，观察到在空肠和回肠中，饲喂含不同CaA + CA组合日粮的鸡隐窝宽度值最低。添加CaA + CA降低了血液中尿酸浓度，盐霉素处理影响了骨骼质量。因此，不建议在生长阶段的蛋鸡中使用盐霉素，而0.25% CaA + 0.25% CA组合可安全用于这些动物。
