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    Investigation of the effects of in ovo taurine injection on hatching characteristics and stress reduction potential
    (Wiley, 2024) Baykalir, Yasin; Simsek, Ulku Gulcihan; Seker, Ibrahim; Koseman, Abdurrahman; Gul, Burcu; Eroglu, Mehmet; Mutlu, Seda Iflazoglu
    BackgroundIn ovo application is the process of administering some nutrients or components into the egg. The main purpose of this application is to ensure that some nutrients are provided to chicks with a short incubation period. Few studies were conducted with taurine in fertile eggs; especially, no observation of hatchability and chick quality has been found. In addition, taurine has an anti-stress impact that fights oxidative factors.ObjectiveTo assess the hatchability and chick quality after in ovo taurine administration. To determine the stress that may occur as a result of in ovo application and whether taurine has a stress-reducing effect.MethodsA total of 1200 fertile eggs from a 34-week-old broiler breeder (Ross 308) flock were categorized into 4 groups with 75 eggs per replicate: control (uninjected), taurine group (0.30 mL dissolved taurine in distilled water), sham control (sterile distilled water) and perforation (eggs perforated and then waxed). On day 14 of incubation, an in ovo injection was administered to the albumen. Data on hatching parameters and hepatic HSP70 levels were obtained using relevant formulas and western blotting, respectively.ResultsControl chicks exhibited higher hatchability than other groups, with the taurine group showing the lowest hatchability. The HSP70 levels were the highest in the perforation group compared to the control group. An increase of 21.37% in the taurine group and 83.45% in the sham control group was observed compared to the control group.ConclusionsThe findings suggest that in ovo application may induce increased stress, whereas taurine may have positive effects in mitigating the stress caused by in ovo application. In ovo application causes stress. In ovo taurine administration showed a stress reduction effect the stress caused by in ovo application. Control chicks exhibited higher hatchability. image
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    Rock salt and boron supplementation: Effects on oxidative stress in blood and semen of rams
    (Hellenic Veterinary Medical Soc, 2025) Akarsu, Selcukhan; Simsek, Ulku Gulcihan; Erisir, Mine; Sonmez, Mustafa; Gungor, Ibrahim Halil; Acisu, Tutku Can; Erdem, Mehmet
    This study aimed to investigate the effects of boron and rock salt minerals, which are interesting as antioxidant minerals on malondialdehyde (MDA) and some antioxidants; glutathione level (GSH), glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), and catalase (CAT) enzyme activities in blood and sperm cells. For this purpose, a total of 36 rams were divided into six research groups, with six rams in each group. The research groups were designed as Control (Just 40 ml water), Salt (10 g rock salt/day), B20 (20 mg boric acid/day), B40 (40 mg boric acid/day), BT20 (20 mg boric acid + 10 g rock salt/day), BT40 (40 mg boric acid + 10 g rock salt/day). The additives were dissolved in 40 ml of water and administered orally with 50 ml syringes for 80 days. Semen and blood samples were taken from the rams at the end of the experiment. Salt added to the diet significantly increased MDA levels in blood and sperm cells. A significant decrease in plasma MDA levels were observed in the BT40 group and sperm cells in the B40 and BT40 groups. Salt and boric acid were found to be effective on GSH and antioxidant enzymes. In conclusion, it was found that boric acid added to the diet at a dose of 40 mg enhanced antioxidant metabolism and significantly reduced salt-induced lipid peroxidation.