Effects of injectable trace element and vitamin supplementation during the gestational, peri-parturient, or early lactational periods on neutrophil functions and pregnancy rate in dairy cows.
The aim of this study was to evaluate effects of injectable trace element and vitamin combination on phagocytic, oxidative burst activity of neutrophils and reproductive outcomes in dairy cows. Cows were to assigned to the following groups: (1) injectable trace element supplementation (ITES, n = 44, containing zinc, manganese, copper, selenium); (2) injectable vitamin supplementation (VIT, n = 48, containing vitamins A, D3, E); (3) ITES + VIT (n = 46); and (4) control (CON, n = 44). Cows were administered four injections between 230 and 260 days of the gestational period, on day of parturition, and 30 days postpartum. Neutrophil function was assessed at 10 days before and after calving. Phagocytosis was greater in cows of the ITES + VIT group at 10 days prepartum (P < 0.05) while oxidative burst was similar among groups. There were greater non-esterified fatty acid (NEFA) concentrations in cows of the ITES+VIT group at 10 days prepartum (P < 0.05). Cows supplemented with ITES+ VIT had less SOD activity than those supplemented with ITES or vitamin during the pre- to post-partum transition period (P < 0.05). The total odds of pregnancy were greater in cows supplemented with trace element and/or vitamin (P < 0.05). In conclusion, supplementation of ITES and/or VIT resulted in an increased total pregnancy rate. Vitamin or trace element supplementation did not differ with the control group in both the prepartum and postpartum period for immune variables. There, however, was greater phagocytosis in cows supplemented with vitamin and trace elements during the prepartum period that might be related to metabolic-induced inflammation.
['Yazlık|Murat Onur|MO|', 'Çolakoğlu|Hatice Esra|HE|', 'Pekcan|Mert|M|', 'Kaya|Ufuk|U|', 'Küplülü|Şükrü|Ş|', 'Kaçar|Cihan|C|', 'Polat|Mert|M|', 'Vural|Mehmet Rıfat|MR|']
D000818:Animals D002417:Cattle D005260:Female D007774:Lactation D009504:Neutrophils D058725:Peripartum Period D011247:Pregnancy D018873:Pregnancy Rate D011270:Pregnancy, Animal D014131:Trace Elements D014815:Vitamins
Dairy cow Immunity Antioxidant Fertility