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首页> 外文期刊>Journal of Animal Physiology and Animal Nutrition >Carcass parameters and meat quality of Tibetan sheep and Small-tailed Han sheep consuming diets of low-protein content and different energy yields
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Carcass parameters and meat quality of Tibetan sheep and Small-tailed Han sheep consuming diets of low-protein content and different energy yields

机译：藏羊羊肉参数和肉质，小尾汉羊消耗低蛋白含量的饮食和不同的能源产量

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摘要

Today, consumers are very health conscious and are more aware of the nutritional value of food, especially of meat, than they were in the past. The aim of this study was to evaluate the carcass parameters and meat quality of Tibetan sheep and Small-tailed Han sheep when consuming a diet of low-protein (7%) and different energy yields (digestible energy, 8.21, 9.33, 10.45 and 11.57 MJ/kg) in the cold season. Twelve sheep of each breed were divided randomly into four treatments of different diets with three replicates per treatment per breed. Crude protein of the meat decreased linearly (p < .05), whereas energy increased linearly (p < .05) with an increase in energy level. Tibetan sheep tended to have a higher (p < .1) dressing percentage and rib eye area, while live body weight and hot carcass weight did not differ between breeds but increased linearly (p < .01) with an increase in energy level. Water holding capacity, as indicated by pressing loss and drip loss, did not differ between breeds and was not affected by dietary energy. The concentration of n-3 polyunsaturated fatty acids (PUFAs) was greater in Tibetan sheep meat but saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs) and n-6 PUFA did not differ between breeds. With an increase in energy content of the diet, SFA decreased (p < .05), whereas MUFA increased (p < .05). The n-6:n-3 PUFA ratio was lower (p < .001) in Tibetan sheep meat, while the atherogenic index did not differ between breeds, but tended to decrease (p < .1) with an increase in dietary energy content. The essential amino acid (EAA) content and ratio of EAA:NEAA (non-essential amino acid) were close to the world standards for healthy meat. In summary, (a) Tibetan sheep meat was preferable to Small-tailed Han sheep meat, although differences between breeds were small; and (b) some carcass parameters and meat quality were improved with an increase in dietary energy level when a low-protein diet was offered.
机译：今天，消费者非常健康，更加了解食物的营养价值，特别是肉类，而不是过去。本研究的目的是在消耗低蛋白质（7％）和不同能量产量（可消化能量，8.21,9.33,10.45和11.57的饮食时，评估藏绵羊和小尾汉羊的胴体参数和肉质。 MJ / kg）在寒冷的季节。每种品种的12只绵羊分为四种不同饮食的治疗，每种治疗每次治疗三次重复。肉的粗蛋白线性下降（p <.05），而能量随着能量水平的增加而增加（p <.05）。西藏绵羊倾向于具有更高的（p <.1）敷料百分比和肋骨眼区域，而活体重和热胴体重量在品种之间没有差异，但随着能量水平的增加而导致线性（p <.01）。压损损失和滴漏表明，品种之间的含水量并不不同，并且不受膳食能量的影响。藏羊肉（PUFA）的浓度较大，藏羊肉，但饱和脂肪酸（SFA），单不饱和脂肪酸（MUFA）和N-6 PUFA在品种之间没有差异。随着饮食能量含量的增加，SFA降低（P <.05），而MUFA增加（P <.05）。 N-6：N-3 PUFA比率在藏羊肉中较低（P <.001），而血液形成指数在品种之间没有差异，但倾向于减少（P <.1）随着膳食能量含量的增加而降低（p <.1） 。 EAA的基本氨基酸（EAA）含量和比例：NEAA（非必需氨基酸）接近于健康肉的世界标准。总之，（a）藏羊肉是小尾汉羊肉，尽管品种之间的差异小; （b）在提供低蛋白质饮食时，一些胴体参数和肉质和肉质随着饮食能量水平的增加而得到改善。

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  • 来源
  • 作者

    Jiao Jianxin; Wang Ting; Zhou Jianwei; Degen Abraham Allan; Gou Nana; Li Shanshan; Bai Yanfu; Jing Xiaoping; Wang Weiwei; Shang Zhanhuan;

  • 作者单位

    Lanzhou Univ Key Lab Grassland Livestock Ind Innovat State Key Lab Grassland Agroecosyst Coll Pastoral Agr Sci &

    Technol Minist Agr &

    Rura Lanzhou Peoples R China;

    Lanzhou Univ Key Lab Grassland Livestock Ind Innovat State Key Lab Grassland Agroecosyst Coll Pastoral Agr Sci &

    Technol Minist Agr &

    Rura Lanzhou Peoples R China;

    Lanzhou Univ Key Lab Grassland Livestock Ind Innovat State Key Lab Grassland Agroecosyst Coll Pastoral Agr Sci &

    Technol Minist Agr &

    Rura Lanzhou Peoples R China;

    Ben Gurion Univ Negev Blaustein Inst Desert Res Wyler Dept Dryland Agr Desert Anim Adaptat &

    Husb Beer Sheva Israel;

    Lanzhou Univ Key Lab Grassland Livestock Ind Innovat State Key Lab Grassland Agroecosyst Coll Pastoral Agr Sci &

    Technol Minist Agr &

    Rura Lanzhou Peoples R China;

    Lanzhou Univ Key Lab Grassland Livestock Ind Innovat State Key Lab Grassland Agroecosyst Coll Pastoral Agr Sci &

    Technol Minist Agr &

    Rura Lanzhou Peoples R China;

    Lanzhou Univ Sch Life Sci State Key Lab Grassland Agroecosyst Lanzhou 730000 Peoples R China;

    Lanzhou Univ Sch Life Sci State Key Lab Grassland Agroecosyst Lanzhou 730000 Peoples R China;

    Lanzhou Univ Key Lab Grassland Livestock Ind Innovat State Key Lab Grassland Agroecosyst Coll Pastoral Agr Sci &

    Technol Minist Agr &

    Rura Lanzhou Peoples R China;

    Lanzhou Univ Key Lab Grassland Livestock Ind Innovat State Key Lab Grassland Agroecosyst Coll Pastoral Agr Sci &

    Technol Minist Agr &

    Rura Lanzhou Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 畜牧、动物医学、狩猎、蚕、蜂;
  • 关键词

    energy level; low-protein dietary; meat quality; Small-tailed Han sheep; Tibetan sheep;

    机译：能量水平;低蛋白质膳食;肉质;小尾汉羊;藏羊;

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