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    The effect of twinship on mineral matter, immunoglobulin G and lamb birth weight in late pregnant ewes and their newborn lambs
    (2021) Atalay, Hasan; Yenilmez, Kudret; Arslan, Sezai; Kılıç, Servet
    The aim of this study was to investigate the effects of twinship on the mineral matter, immunoglobulin G (IgG), andlamb birth weight in late pregnant ewes and their lambs. The material of the study consisted of the 18 Kıvırcık breedewes, which were 130-150 days pregnant, and their 27 newborn lambs. The ewes included in the study weredivided into two groups by ultrasound as those carrying a single pregnancy (n=9) and a twin pregnancy (n=9). BodyCondition Scores (BCS) were determined and then their blood samples were taken. The lambs born from these eweswere weighed with precision scales as soon as they were born, and blood samples were taken 24 hours after birth.Mineral substance determination from blood samples was made by ICP-OES, and IgG determination was made byELISA. It was found that serum IgG and mineral matter levels were not affected by twinship in ewes (p>0.05).Calcium (Ca) level was significantly higher in twin lambs compared to single lambs (p<0.05). There was nostatistical difference between single and twin lambs in terms of other minerals and IgG concentrations (P>0.05).Total protein and globulin values were significantly higher in single lambs than twin lambs (P <0.05). It wasdetermined that single-born lambs were significantly heavier than twins (P<0.05), and while male lambs wereheavier than females, the difference between them was not statistically significant (P>0.05). As a result, it wasdetermined that twinship and BCS did not affect the mineral substance, total protein, albumin, globulin and IgGlevels in late pregnant ewes, while twinship in lambs affected lamb birth weight, total protein, globulin and Cavalues, but not other mineral and IgG levels. Significantly low total protein and globulin concentrations in twinlambs suggest that these animals cannot absorb enough colostrum.
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    The effect of twinship on selected hematological and biochemical parameters in late pregnant ewes
    (Polskie Towarzystwo Nauk Weterynaryjnych, 2021) Yenilmez, Kudret; Arslan, Sezai; Kılıç, Servet; Atalay, Hasan
    This study aimed to determine the effect of twinship on the hematological and biochemical parameters in ewes of the Kıvırcık breed commonly raised in the Thrace region of Turkey. The study material consisted of 30 Kıvırcık ewes at days 130-150 of gestation, aged 3-5 years, weighing 55.61 ± 0.76 kg. After ultrasound examination, the ewes included in the study were divided into a single-pregnant group (n = 15) and a twin-pregnant group (n = 15), and their blood samples were taken. The levels of red blood cells (RBC), hematocrit (HCT), hemoglobin (HGB) white blood cells (WBC), lymphocytes (LYM), monocytes (MON), non-esterified fatty acid (NEFA), ?-hydroxybutyrate (BHBA), glucose, cholesterol, total protein, aspartate aminotransferase (AST), alanine aminotransferase (ALT) were determined in their blood samples. It was found that, although twinship did not affect hemogram values in ewes (p > 0.05), the biochemical parameters, BHBA, ALT, and AST values, were significantly affected by twinship (p < 0.05). A high positive correlation was found between BHBA and NEFA. Thus it was concluded that twin pregnancy did not cause any significant changes in hematological parameters in Kıvırcık ewes. However, the significantly higher BHBA in twin-pregnant ewes and the high positive correlation between BHBA and NEFA indicate that the negative energy balance started to affect these animals, and a carbohydrate deficiency emerged. Therefore, twin-pregnant ewes should be monitored closely to reduce the risk of ketosis. © 2021 Polskie Towarzystwo Nauk Weterynaryjnych. All rights reserved.
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    The effect of vitamin E administration to dairy cows in the prepartum period on some metabolic, oxidative, and reproductive parameters
    (Massimo Morgante, 2022) Yenilmez, Kudret; Atalay, Hasan; Cellat, Mustafa; Etyemez, Muhammed; Atmaca, Gizem; Gürsel, Feraye Esen
    The purpose of this study was to investigate how vitamin E affected oxidative stress, metabolic biomarkers, and reproductive parameters in cows during late gestation. The study used forty healthy, multiparous cows in late gestation. The animals were di-vided into two groups, control (n.20) and experimental (n:20) group, ten (±5) days before birth. On the same day, 10 ml of blood sample was drawn from each animal’s tail vein, and the cows in the experimental group received 3000 mg of vitamin E (DL-al-pha-tocopherol acetate) intramuscularly, whereas the cows in the control group received 20 ml of 0.9% NaCl. On calving day and on the 15th day after the calving, blood samples were taken again. The serums of the blood samples taken were separated and stored at-80 C until the analysis. Malondialdehyde (MDA), Glutathione Peroxidase (GSH-Px), Catalase (CAT), Glutathione (GSH), Glucose (GLU), Triglyceride (TG), Cortisol (COR), Glutamic Oxaloacetic Transaminase (GOT), Gamma Glutamyl Trans-ferase (GGT) and Glutamic Pyruvic Transaminase (GPT) in the samples were measured. Calving-first estrus, calving-first in-semination, calving-conception, and artificial insemination per pregnancy were recorded to determine the reproductive performance of the cows involved in the study. Vitamin E administration to cows during the peripartum period was found to boost GSH and GSH-Px levels at birth while decreasing GPT levels (p<0.05). Furthermore, the period of calving-first estrus, calving-first insemination, and calving-conception was shortened compared to the control group, however this was not statistically significant (p>0.05). Vitamin E was proven to be useful in lowering birth stress and protecting the liver when given to cows in late gestational stages. It is thought that it may also be effective in improving reproductive parameters, but the study should be replicated with more animals. © 2022, Massimo Morgante. All rights reserved.