ABSTRACT

The objective was to characterize the effects of a supplemental Herbal Antibiotics Source (HAnS) on performance, blood chemistry, blood cells, and antibody counts of Holstein calves. Forty calves (initial BW 45.8 ± 7.2 kg) were randomly assigned to treatments: 0, 3, 4, and 5 g d⁻¹ HAnS. The additive improved hip height and thoracic girth. The reduction of starter diet intake among individuals varied greatly, while milk replacer intake increased. HAnS at intermediate doses reduced the cases of pneumonia. It also linearly reduced the blood serum glucose and B-OH butyrate. Urea and monocytes showed a quadratic response, and basophils decreased. HAnS improves calf development at intermediate doses and reduces the incidence of diseases.

摘要

目的是表征补充草本抗生素来源 (HAnS) 对荷斯坦犊牛的性能、血液化学、血细胞和抗体计数的影响。四十头小牛（初始体重 45.8 ± 7.2 kg）被随机分配到处理：0、3、4和 5 gd ^-1 HAnS。添加剂改善了臀部高度和胸围。个体间开胃菜摄入量的减少差异很大，而代乳品摄入量增加。中等剂量的 HAnS 减少了肺炎病例。它还线性降低了血清葡萄糖和 B-OH 丁酸盐。尿素和单核细胞呈二次反应，嗜碱性粒细胞减少。HAnS 在中等剂量下可改善小牛发育并降低疾病发生率。