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首页> 外文期刊>Livestock Science >Blood biochemical parameters of bone metabolism in cows and calves kept in a beef suckler system during the early postpartum period
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Blood biochemical parameters of bone metabolism in cows and calves kept in a beef suckler system during the early postpartum period

机译：在产后期间，牛和小牛骨代谢的血液生化参数在产后期间的牛肉吸吮系统

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The early lactation and early neonatal period are characterised by intense changes in bone metabolism. The aim of this study was to evaluate blood biochemical parameters of bone metabolism during early lactation in cows and neonatal calves. The study was carried out on 13 Simmental cows and 13 beef suckler calves in cow-calf operations. Blood samples were obtained at 6 time points: 6, 12 and 48 h and 7, 14 and 30 d postpartum (pp). An increase in the concentration of total calcium (tCa) of cows 14 d pp (P = 0.04), an increase in the concentration of inorganic phosphorus (iP) 12 and 48 h pp (P = 0.001, P = 0.002, respectively), an increase in bone specific alkaline phosphatase (BALP) and parathyroid hormone (PTH) concentration 7 d pp (P = 0.02, P = 0.02, respectively) and a decrease of total alkaline phosphatase (TALP) activity during the first 14 d pp (P & 0.05) indicated that the early puerperium in cows is an intense period of change in bone and mineral metabolism. An increase of iP and magnesium (Mg) concentrations in calves at 48 h pp (P & 0.01, P & 0.01, respectively), a decrease in BALP concentration at 48 h pp (P = 0.01), higher TALP activity at 30 d pp (P = 0.02) and decreased PTH at 7 d pp (P = 0.04), indicated bone formation and growth in calves. Our results in cows indicated increased bone resorption and Ca loss through milk production. In neonatal calves we demonstrated high bone turnover during the period of intensive growth and development. The results contribute to a better understanding of bone metabolism in the early postpartum period of cows and neonatal period of calves, and also towards the elucidation of disorders of bone metabolism after calving.
机译：早期哺乳期和早期新生儿时期的特征在于骨代谢的强烈变化。本研究的目的是评估奶牛和新生牛犊早期泌乳期间骨代谢的血液生化参数。该研究在13个Saimmental奶牛和13个牛奶蹄牛犊中进行了牛犊操作。在6个时间点中获得血液样品：6,12和48小时和7,14和30d产后（PP）。奶牛14d pp总钙（TCA）的浓度增加（p = 0.04），无机磷（IP）12和48h Pp浓度的增加（P = 0.001，分别为0.002），骨特异性碱性磷酸酶（BALP）和甲状旁腺激素（PTH）浓度7d pp（p = 0.02，p = 0.02分别）和在前14d pp期间的总碱性磷酸酶（TALP）活性的降低（p ＆amp; <0.05）表明，奶牛的早期产褥期是骨骼和矿物质代谢的强烈变化。在48小时PP（P＆amp; 0.01，P＆amp; 0.01，PP）中的IP和镁（Mg）浓度的增加（P＆amp; 0.01，分别）降低（P = 0.01），更高在30 d pp（p = 0.02）的滑石活性并降低7d pp（p = 0.04），表明骨骼形成和犊牛的生长。我们在奶牛的结果表明，通过牛奶生产增加了骨吸收和CA损失。在新生儿小牛中，我们在密集增长和发展期间展现出高骨质营业额。结果有助于更好地了解产后早期的牛和新生儿时期骨代谢，也有助于在产犊后阐明骨代谢障碍。

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