Miqueo Evangelina, Mattioli Guillermo A, Moore Dadin P, Bilbao María G, Moran Karen D, Relling Alejandro E
Departamento de Producción Animal, Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Balcarce 7620, CP, Argentina.
Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires C1033AAJ, CP, Argentina.
Animals (Basel). 2024 Jun 25;14(13):1868. doi: 10.3390/ani14131868.
Oxidative stress may affect new born calves due to high stress suffered around birth. We hypothesized that maternal supplementation with micronutrients and vitamins in late gestation enhance the neonatal calf's antioxidant system, decreasing the occurrence and duration of diarrhea, and improving growth from birth through weaning. To test this hypothesis, 80 multiparous cows were cluster-assigned to treatment groups. Treated group (TG) cows received mineral and vitamin supplementation while control group (CG) cows received saline solution. Feed intake and fecal score were measured daily until the ninth week. Weight and body measurements were registered weekly, and blood samples were collected from postpartum cows and calves after birth and at 7, 14, and 63 days of life. Although CG calves had greater fecal scores ( = 0.01), diarrhea characteristics did not differ. Calves in the TG showed greater starter intake ( = 0.04). Feed efficiency showed a trend with treatment-age interaction ( = 0.06). Calves in the CG had wider hips in the first week ( = 0.03), but not by the ninth week. Total antioxidant status, thiobarbituric acid reactive substances, and haptoglobin did not differ between treatment groups. Serum metabolites showed no differences. Supplementation did not impact calf antioxidant system or growth in the first two months.
氧化应激可能会因新生犊牛出生前后遭受的高应激而影响它们。我们假设，在妊娠后期给母牛补充微量营养素和维生素可增强新生犊牛的抗氧化系统，减少腹泻的发生率和持续时间，并改善从出生到断奶期间的生长情况。为了验证这一假设，将80头经产母牛聚类分配到各治疗组。治疗组（TG）的母牛接受矿物质和维生素补充，而对照组（CG）的母牛接受盐溶液。每天测量采食量和粪便评分，直至第九周。每周记录体重和身体测量数据，并在产后母牛和犊牛出生后以及出生后第7天、14天和63天采集血样。尽管CG组犊牛的粪便评分更高（P = 0.01），但腹泻特征并无差异。TG组犊牛的起始采食量更高（P = 0.04）。饲料效率呈现出治疗-年龄交互作用的趋势（P = 0.06）。CG组犊牛在第一周时臀部更宽（P = 0.03），但到第九周时则没有差异。治疗组之间的总抗氧化状态、硫代巴比妥酸反应性物质和触珠蛋白并无差异。血清代谢物也没有差异。补充营养在前两个月对犊牛的抗氧化系统或生长没有影响。
