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    Effect of Oreganum onites L. Aromatic Water Supplemented to Whole Milk on Performance, Blood Metabolites and Oxidative Status of Holstein Calves During the Pre-Weaning Period
    (Zoological Soc Pakistan, 2023) Ozkaya, Serkan; Ozkan, Oktay; Erbas, Sabri; Yalcin, Isa Gokhan; Piwczynski, Dariusz; Neja, Wojciech
    In intensive growing systems, the growth and yield of livestock are suppressed due to the oxidative stress to which they are also exposed. In the present study, it was investigated whether Oreganum onites L. aromatic water (OW) could serve as an agent of reducing the effects of oxidative stress while improving the growth performance of suckling Holstein calves. Twenty-eight newborn calves (n=7, in each group) were randomly selected and assigned to the following four treatments: Control, 40, 60 and 80 ml OW supplemented whole milk (WM) per day. The applied 60 and 80 ml OW tended to improve the antioxidative stress mechanism of calves while supporting their growth (e.g., total and daily weight gain, body measurements). The findings of the present study showed that Oreganum onites L. aromatic water, a by-product, can be used safely in alleviating the problems such as oxidative stress that may occur in intensive growing systems.
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    Effect of supplementing milk replacer with aromatic oregano (Oreganum onites L.) water on performance, immunity and general health profiles of Holstein calves
    (Csiro Publishing, 2018) Ozkaya, Serkan; Erbas, Sabri; Ozkan, Oktay; Baydar, Hasan; Aksu, Taylan
    The purpose of this study was to examine the effects of supplementing milk replacer (MR) with aromatic oregano (Origanum onite L.) water on weaning age, performance during the pre- and post-weaning periods, immune systems, blood parameters and general health of 40 Holstein Friesian calves. The calves fed with oregano water (OW)supplemented MR were weaned earlier than those in the Control group. There were no statistical differences in the liveweight and body measurements among the groups at the weaning age and post-weaning period. The feed intake of the calves fed with OW was higher than that of calves in the Control group in the pre-weaning period. The OW supplementation significantly increased the faecal firmness of calves (P < 0.05). It also decreased the number of E. coli, Coliforms and Enterobacteriaceae pathogens, but only the amount of Enterobacteriaceae was significantly decreased (P < 0.05). Non-pathogens, such as Lactic acid bacteria, were not affected by OW supplementation. The OW supplementation had no significant effect on hematologic and biochemical blood values. There was significant interaction between age and groups in gamma-glutamyl transpeptidase (P < 0.05). The immunoglobulins (IgA, IgG and IgM) values of calves were steadily higher than those of the calves in the Control group. The general health profiles of the calves improved. It can be concluded that MR containing 1-2% OW fed to calves in the early weaning period is a promising treatment to improve their wellbeing and shorten the weaning period.