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Mid-pregnancy ewe shearing and the effects on fetus liver and muscle glycoprotein deposits

机译：妊娠中期母羊剪毛及其对胎儿肝脏和肌肉糖蛋白沉积的影响

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The reason why shearing ewes in mid-pregnancy does increase the lamb birth weight is not completely clears. Therefore, we focused on the analyses of the deposition of glycogen in different fetal tissues to investigate this issue. Thirteen pregnant Australian Merino ewes, raised in native pasture, were separated in two groups. One group (n = 7) was shorn (SE) at 70 days of pregnancy, whereas another group (n = 6) remained unshorn (NSE). Cesarean section was conducted in all the ewes at near parturition, when placenta and fetuses sampling were collected. Placenta, liver and muscle samples were fixed and stained with glycoprotein-reactive acid-Schiff acid for analysis under light microscopy. The quantification of these glycoproteins was performed with the support of a program that analyzes the measurement of the intensity of staining by field. Five random fields from each sample were used, where statistical analyzes was used as normal test T. Among the analyzed regions, the deposition of glycoprotein between SE and NSE groups was statistically different in the hepatic portal vein (54,499.23 μm 2 in SE and 34,830.73 μm 2 in NSE) and in the total muscle area of the sample fragment (41,128, 7 μm 2 and 31,942.7 μm 2 , respectively; P 0.05). We conclude that shearing ewes at the 70th day of gestation lead to accumulation of glycoproteins in the liver and muscle of fetuses, which may be responsible for the increase in birth weights in that group.
机译：怀孕中的母羊剪羊毛会增加羔羊出生体重的原因尚不完全清楚。因此，我们专注于糖原在不同胎儿组织中沉积的分析，以研究这一问题。在天然牧场饲养的十三头澳大利亚美丽诺怀孕母羊分为两组。一组（n = 7）在怀孕70天时被割断（SE），而另一组（n = 6）仍被割断（NSE）。剖腹产时对所有母羊进行剖腹产，采集胎盘和胎儿。固定胎盘，肝脏和肌肉样品，并用糖蛋白反应性酸-席夫酸染色，以在光学显微镜下进行分析。这些糖蛋白的定量是在一个程序的支持下进行的，该程序通过现场分析染色强度的测量。使用每个样本的五个随机视野，将统计分析用作正常检验T。在所分析的区域中，SE和NSE组之间的糖蛋白沉积在肝门静脉中具有统计学差异（SE分别为54,499.23μm2和34,83​​0.73μm在NSE中为2）和样品碎片的总肌肉区域（分别为41,128、7μm2和31,942.7μm2; P <0.05）。我们得出的结论是，在妊娠的第70天，母羊的剪毛导致胎儿肝和胎儿肌肉中糖蛋白的积累，这可能是该组出生体重增加的原因。

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