Gheller Larissa S, Martins Mellory M, Silva Thiago H, Freu Gustavo, Salles Márcia S V, Júnior Luiz C R, Soares Weber V B, Netto Arlindo S
Department of Animal Science, College of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635-900, SP, Brazil.
Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga 13635-900, SP, Brazil.
Animals (Basel). 2023 Oct 19;13(20):3261. doi: 10.3390/ani13203261.
This study evaluated the effects of feeding an ultra-diluted complex to dairy cows during the transition period and early lactation. Thirty multiparous pregnant dairy cows were blocked and randomly assigned to either a placebo control (CON) group or ultra-diluted complex (UD) group. The CON group received a placebo (basal diet + 40 g/cow/day of expanded silicate), while the UD group received the ultra-diluted complex (basal diet + 40 g/cow/day of PeriParto Transição-RealH, composed of ultra-diluted substances + vehicle: expanded silicate). Cows were evaluated from 30 days before the expected calving date until 60 days in milk (DIM) for sample and data collection. Post-partum dry matter intake (DMI) was not affected by the treatment. Cows fed UD had higher DMI relative to BW. Feeding UD increased milk lactose content and decreased milk protein content. Cows fed UD had lower somatic cell counts in the third and fourth week of lactation. Cows fed UD showed a tendency for higher liver health index. Using UD during the transition period and early lactation may benefit liver and udder health of dairy cows with no detrimental effect on milk performance.
本研究评估了在围产期和泌乳早期给奶牛饲喂超稀释复合物的效果。30头经产怀孕奶牛被分组并随机分配到安慰剂对照组（CON）或超稀释复合物组（UD）。CON组接受安慰剂（基础日粮 + 每头奶牛每天40克膨化硅酸盐），而UD组接受超稀释复合物（基础日粮 + 每头奶牛每天40克围产期过渡-RealH，由超稀释物质 + 载体：膨化硅酸盐组成）。从预计产犊日期前30天到产奶60天（DIM）对奶牛进行评估以采集样本和数据。产后干物质采食量（DMI）不受处理影响。饲喂UD的奶牛相对于体重有更高的DMI。饲喂UD增加了牛奶乳糖含量并降低了牛奶蛋白质含量。饲喂UD的奶牛在泌乳第三周和第四周体细胞数较低。饲喂UD的奶牛肝脏健康指数有升高趋势。在围产期和泌乳早期使用UD可能有益于奶牛的肝脏和乳房健康，且对产奶性能无不利影响。
