R. Bras. Zootec.02/out/2023;52:e20220177.
Effects of herbal choline as a replacement for choline chloride on myopathy, locomotor system, and hepatic health of broilers
Allan Gabriel Ferreira Dias
, Ana Paula Iglesias Santin
, Júlio César Lopes Brasileiro
, Carla Daniela Suguimoto Leite
, José Henrique Stringhini
, Alison Batista Vieira Silva Gouveia
, Júlia Marixara Sousa da Silva
, Marcos Barcellos Café
ABSTRACT
The objective of this study was to evaluate the effects of replacing choline chloride with a plant source of choline on the locomotor system, liver health, and development of breast myopathies in broilers aged 1-42 days of age. We allocated 1,120 one-day-old Cobb broilers to four treatment groups and fed them commercial diets based on corn and soybean meal. The treatments included choline in the form of 1,800.00 mg/kg choline chloride; 1,350.00 mg/kg choline chloride + 450.00 mg/kg herbal choline; 900.00 mg/kg choline chloride + 900.00 mg/kg herbal choline; and 1,000.00 mg/kg herbal choline. Each treatment group had eight replications. Throughout the experiment, gait score, footpad dermatitis, hock burn, and leg deformities (valgus and varus) were evaluated in the birds at 28 and 35 days of age. After slaughter, parameters such as breast myopathies, tibial dyschondroplasia score, and histological slides of the pectoral muscle, liver, and proximal tibial epiphysis were assessed. The results demonstrated good hepatic and locomotor health in the broilers, as no classical signs of choline deficiency were observed. Statistical analyses indicated no significant differences between treatments in terms of liver and locomotor health, suggesting that broilers fed diets supplemented with the plant source did not experience choline deficiency. Additionally, no statistically significant differences were found between treatments regarding breast myopathies. Overall, the tested choline plant source can effectively replace choline chloride in broiler diets.
Palavras-chave: footpad dermatitis; histological analysis; liver; pectoral muscle; tibial dyschondroplasia