In this study, it was aimed to investigate the relationship between serum zinc (Zn), copper (Cu), iron (Fe) and alkaline phosphatase (ALP) and milk Zn, Cu and Fe levels in Tushin sheep during the lactation period. Seventy fout Tushin sheep, aged 2‐4, in normal feeding conditions during the lactation period, in the Research and Application Farm of were used in the research. Blood and milk samples were taken from the same sheep included in the study in March, April, May and June 2008. Zn, Fe, Cu and ALP levels were measured in serum of blood samples and Zn, Cu, Fe levels in milk samples were measured by atomic absorption spectrophotometer. The lowest values of serum Zn, Cu, Fe and ALP levels of Tushin sheep by months are respectively; 0.66±0.03 ppm (May), (p<0.001); 0.55±0.05 ppm (June), (p>0.05); While 1.25±0.13 ppm (May), (p<0.001); 80.81±5.81 IU L-1 (March), (p<0.001); If the highest values 1.21±0.05 ppm (April), (p<0.001); 0.80±0.10 ppm (March),(p>0.05); 2.27±0.16 ppm (March), (p<0.001) and 23.28±5.58 IU L-1 (May), (p<0.001). On the other hand, the lowest values of milk Zn, Cu and Fe levels by months, respectively, the lowest milk Zn levels in May (0.68±0.05 ppm), (p<0.001); 0.68±0.05 ppm (March), (p<0.01); 0.32±0.03 (June), (p>0.05); While 0.65±0.07 ppm (March),( p<0.01); the highest values were 1.17±0.06 ppm (March), (p<0.001); 0.41±0.03 ppm (April), (p>0.05); 0.90±0.09 ppm (April), (p<0.01). And also, it was determined that there was a positive correlation between serum Zn and ALP and serum Zn and Fe levels and a negative correlation between serum Zn and Cu, milk Zn and Cu and milk Zn‐Fe levels. Biochemical parameters are important in determining and controlling the health and disease status of the animal. The most important period affecting milk yield in sheep breeding is the lactation period. Due to the limited number of studies examining serum and milk some biochemical parameters in lactating tuj ewes, it is thought that changes in biochemical parameters of lactating ewes will contribute to the researches. In addition, it was concluded that comprehensive studies should be conducted.
Mehtap Odabasi and Ebru Bardas Ozkan. The Effect of Lactation Period on Some Serum and Milk Biochemical Parameters in Tushin Sheep.
DOI: https://doi.org/10.36478/10.59218/makjava.2023.1.7
URL: https://www.makhillpublications.co/view-article/1680-5593/10.59218/makjava.2023.1.7