L-肉碱对母猪胎盘绒毛膜细胞形态结构的影响
首发时间:2013-01-21
摘要:本文旨在研究妊娠期日粮中添加L-肉碱对母猪胎盘绒毛膜细胞形态结构的影响。选择遗传一致、胎次3-5胎的长大二元母猪40头,随机分为对照组(0mg/kg L-肉碱)和试验组(50mg/kg L-肉碱)两个处理组,每组20头母猪,于母猪自然分娩排出胎盘时,采集胎盘绒毛膜样品,制作石蜡切片观察母猪胎盘绒毛膜细胞形态学结构。结果表明,添加L-肉碱的母猪胎盘绒毛膜上皮完整、结构清晰,毛细血管未见淤血、坏死等变化,而没有添加L-肉碱的母猪胎盘绒毛膜上皮可见缺损,部分区域出现上皮坏死及渗出变化、形成小血栓。由此可知,日粮中添加L-肉碱可以促进母猪胎盘绒毛膜生长和发育,促使绒毛膜上皮和毛细血管形态结构完整,有利于母体与胎儿间的物质交换,从而有助于提高母猪的繁殖性能。
关键词: L-肉碱 母猪 胎盘绒毛膜细胞形态结构
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Effects of Dietary Supplementation of L-carnitine on the development of placental chorions in sows
Abstract:The research was conducted to investigate the effects of dietary supplementation of L-carnitine during pregnancy on the development of placental chorions in sows. A trial with 40 crossbred sows (Yorkshire × Landrace) was conducted which were assigned to two groups with consideration of their parity number (parity 3 to 5), fed either control diets with low native L-carnitine concentrations or the same diets supplemented with 50 mg of L-carnitine/kg during pregnancy. Collect placental chorionic samples when they were dischanged from sows. Placenta the chorionic cell morphology structure was observed through paraffin sections. The results were as follows: Epitheliums of placental chorions in sows supplemented with L-carnitine were complete. The structure of chorions was clear, capillaries developed well and no necrosis was observed in sows fed L-carnitine. Impaired Epitheliums and small thrombosis of chorions in control sows were observed. Generally, L-carnitine had the effect on promoting development of placental chorions in sows including chorionic epithelial and capillary were complete. This in turn may enhance development of the placenta and ability of tranporting nutrients.
Keywords: L-carnitine sow Placenta the chorionic cell morphology structure
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