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首页> 外文期刊>Meat Science >Zilpaterol hydrochloride lowers marbling score by dilution of marbling and depression of intramuscular adipocyte volume in M. longissimus dorsi of beef steers
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Zilpaterol hydrochloride lowers marbling score by dilution of marbling and depression of intramuscular adipocyte volume in M. longissimus dorsi of beef steers

机译:盐酸盐水醇通过稀释M.Shongissimus Dorsi的肌肉凝固的大理石和抑郁症来降低大理石抚养分数。

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摘要

We hypothesized that zilpaterol hydrochloride (ZH) depresses marbling scores in beef cattle by dilution of the intramuscular (i.m.) adipose tissue in the longissimus thoracis (LT) by increased muscle cross-sectional area. Crossbred steers were treated with ractopamine hydrochloride (RH; 28 d) or ZH (20 d) or no β-adrenergic agonist (CON). ZH increased LT cross-sectional area (P ≤ .001) and depressed rib fat depth (P < .001), USDA marbling score (P ≤ .05), percent LT lipid (P ≤ .02), total lipid in a 2.54 cm-thick LM steak (P < .05) and most LT lipid fatty acids (P ≤ .05),but had no effect on mean i.m. adipocyte volume (P = .15). ZH increased the relative volume proportion of smaller i.m. adipocytes (250 to 500 pL) and decreased the proportion of larger i.m. adipocytes (2000 and 3000 pL) (P ≤ .05). We conclude that ZH reduces marbling score both by dilution of the marbling and a depression of i.m. adipocyte relative volumes.
机译:我们假设盐水盆玻璃(ZhatersoloZilpaterolol通过增加的肌肉横截面积稀释肌肉内(即)在Longissimus Thoracis(Lt)中的肌肉内(即)脂肪组织。用盐酸ractopamine(RH; 28d)或Zh(20d)或NOβ-肾上腺素能激动剂(CON)处理杂交配角。 Zh增加LT横截面积(p≤001)和抑郁肋脂肪深度(p <.001),美元大理石浆果(p≤05),百分比lt脂质(p≤.02),总脂质在2.54中CM厚的LM牛排(P <.05)和大多数LT脂质脂肪酸(p≤05),但对平均值没有影响adipocyte体积(p = .15)。 Zh增加了较小的相对体积比例。 adipocytes(250至500 pl)并降低了最大的比例。 adipocytes(2000和3000 pl)(p≤05)。我们得出结论,Zh通过稀释大理石和最近的抑郁症来减少大理石摩擦评分。 adipocyte相对卷。

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