Sözcü, A.Ak, İbrahim2024-07-022024-07-022020-01-171612-9199https://doi.org/10.1399/eps.2020.293https://www.european-poultry-science.com/effects-of-span-classws-name-in-ovospan-injection-of-glutamine-on-late-term-embryo-development-hatchability-one-day-old-chick-quality-and-small-intestine-morphological-tr,QUlEPTYzNDU1ODYmTUlEPTE2MTAxNA.html?UID=7824E8156F90BD1A5F6CDC57C21AF462D36F6AD2149025DDhttps://hdl.handle.net/11452/42732This study investigated the effects of in-ovo injection of glutamine on late term embryo development, hatchability, one-day old chick quality and small intestine morphological traits in broilers. Hatching eggs were obtained from a Ross 308 breeder flock at 36 weeks of age and were injected with glutamine into the air sac on day 17 of incubation. Six treatment groups were created as follows: negative control (no injection), positive control (injected with only distilled water), and four groups injected with different doses of glutamine dissolved in 0.5 ml distilled water, dose 1: 20 mg; dose 2: 40 mg; dose 3: 60 mg; dose 4: 80 mg. On day 20 of incubation, embryo weight, yolk absorption and embryo body and leg length were found to be highest in embryos given 40 mg of glutamine (P < 0.01). Chick hatching weight and relative chick weight were highest in the 40 mg treatment (dose 2) (45.9 g and 72.2% respectively). At hatch, villus growth in the duodenum, jejenum and ileum was stimulated by glutamine injection at dose 2 (40 mg). These findings showed that a 40 mg glutamine in-ovo injection gave the optimum increase in embryonic growth and liveability, chick quality and villus development in broilers.eninfo:eu-repo/semantics/closedAccessGrowth-performanceBreeder eggsGastrointestinal-tractHistologyVilliGlutamineIn-ovo injectionYolk absorptionVillus growthBroilerScience & technologyLife sciences & biomedicineAgriculture, dairy & animal scienceAgricultureArticle0005112952000018410.1399/eps.2020.293