title: Effect of a phytogenic feed additive on performance, ovarian morphology, serum lipid parameters and egg sensory quality in laying hen.
abstract: This present study was conducted to evaluate the effects of dietary inclusion of 4, 8 and 12 g kg(-1) phytogenic feed additives mixture on performance, egg quality, ovary parameters, serum biochemical parameters and yolk trimethylamine level in laying hens. The results of experiment have shown that egg weight was increased by supplementation of 12 g kg(-1) feed additive whereas egg production, feed intake and feed conversion ratio (FCR) were not significantly affected. There were no significant differences in egg quality parameters by supplementation of phytogenic feed additive, whereas yolk trimethylamine level was decreased as the feed additive level increased. The sensory evaluation parameters did not differ significantly. No significant differences were found in serum cholesterol and triglyceride levels between the treatments but low- and high-density lipoprotein were significantly increased. Number of small follicles and ovary weight were significantly increased by supplementation of 12 g kg(-1) feed additive. Overall, dietary supplementation of polyherbal additive increased egg weigh, improved ovary characteristics and declined yolk trimethylamine level.
authors.affiliation: Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran;
authors.forename: Ali Asghar
authors.initials: AA
authors.lastname: Saki
authors.affiliation: Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran;
authors.forename: Hassan
authors.initials: H
authors.lastname: Aliarabi
authors.affiliation: Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran;
authors.forename: Sayed Ali
authors.initials: SA
authors.lastname: Hosseini Siyar
authors.affiliation: Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran;
authors.forename: Jalal
authors.initials: J
authors.lastname: Salari
authors.affiliation: Department of Analytic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran.
authors.forename: Mahdi
authors.initials: M
authors.lastname: Hashemi
keywords: Herbal medicine; Laying performance; Ovary follicle; Sensory evaluation; Trimethylaminuria