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马晓文 周文静 刘鑫 寇宇斐 张智安 李发弟 李飞

引用本文: 马晓文,周文静,刘鑫,寇宇斐,张智安,李发弟,李飞. 大麦粉碎粒度对育肥湖羊生长育肥性能和养分消化及肉品质的影响. 欢乐牛牛, 2020, 37(0): 1-11 doi: shu
Citation:  MA X W, ZHOU W J, LIU X, KOU Y F, ZHANG Z A, LI F D, LI F. Effects of barley particle size in diets on growth performance, nutrient digestion, and meat quality of fattening sheep. Pratacultural Science, 2020, 37(0): 1-11 doi: shu

大麦粉碎粒度对育肥湖羊生长育肥性能和养分消化及肉品质的影响

    作者简介: 马晓文(1996-),女,甘肃武威人,在读硕士生,主要从事反刍动物营养研究。E-mail: .cn;
    通讯作者: 李飞, .cn
  • 基金项目: 农牧交错带牛羊牧繁农育关键技术集成示范项目(16190050);甘肃现代农业(草食畜)产业技术体系(GARS-09);长江学者和创新团队发展计划资助(IRT_17R50)

摘要: 为研究饲粮中大麦(Hordeum vulgare Linn)粉碎粒度对育肥湖羊生长性能、养分消化、瘤胃液挥发性脂肪酸、屠宰性能和肉品质的影响,本研究选取54只(初始体重约为29.85 ± 0.23 kg)3月龄湖羊公羔,随机分为3个处理,每个处理18个重复,每个重复1只羊。3个处理分别为整粒大麦经过2、3和4 mm的筛片孔径粉碎,即小粉碎粒度(small particle size, SPS)组、中粉碎粒度(middle particle size, MPS)组和大粉碎粒度(large particle size, LPS)组。整个试验期包括: 适应期14 d,预饲期7 d,正试期63 d。结果表明: 1)各处理末重、干物质采食量(dry matter intake, DMI)、平均日增重(average daily growth, ADG)和料重比(feed to gain ratio, F/G)无显著差异(P > 0.05)。2)大麦粉碎粒度对干物质(dry matter, DM)、有机物(organic matter, OM)和粗蛋白(crude protein, CP)消化率无显著影响(P > 0.05),但中性洗涤纤维(neutral detergent fiber, NDF)和酸性洗涤纤维(acid detergent fiber, ADF)表观消化率受大麦粉碎粒度的显著影响(P < 0.05)。LPS组NDF消化率较SPS和MPS组显著提高了14.3%和7.8% (P < 0.05)。LPS组ADF表观消化率较SPS组显著提高了22.1% (P < 0.05),LPS和MPS组之间无显著差异(P > 0.05)。3)各处理总挥发性脂肪酸(total volatile fatty acid, TVFA)、乙酸、丙酸、异丁酸、丁酸、异戊酸和戊酸含量均无显著差异(P > 0.05),乙丙比和瘤胃液pH也无显著差异(P > 0.05)。4)各处理宰前活重、胴体重、屠宰率及瘤胃腹囊和背囊的亮度、红度和黄度均无显著差异(P > 0.05)。5)各处理0和24 h pH、滴水损失、失水率和肌肉亮度、红度、黄度均无显著差异(P > 0.05),但LPS组剪切力显著高于SPS和MPS组(P < 0.05)。在本研究饲粮配方下,大麦粉碎粒度未对育肥湖羊的生长性能、屠宰性能和瘤胃液挥发性脂肪酸产生影响,但大麦4 mm粉碎处理对育肥湖羊的表观消化率影响效果最佳,有提高纤维消化的作用。

English

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  • 亚博滚球

    表 1  亚博滚球 试验饲粮组成及营养水平

    Table 1.  Composition and nutritive value of experimental diets

    项目
    Item
    2 mm粉碎组
    Small particle size
    3 mm粉碎组
    Middle particle size
    4 mm粉碎组
    Large particle size
    原料 Ingredients (air-dry basis)
    大麦秸秆 Barley straw/% 15 15 15
    大麦 Barley/% 48 48 48
    玉米皮 Corn bran/% 15 15 15
    棉籽粕 Cottonseed meal/% 6 6 6
    豆粕 Soybean meal/% 8 8 8
    碳酸氢钙 Calcium bicarbonate/% 0.6 0.6 0.6
    石粉 Limestone/% 1.2 1.2 1.2
    食盐 NaCl/% 0.7 0.7 0.7
    膨化尿素 Extruded urea/% 0.5 0.5 0.5
    糖蜜 Molasses/% 4 4 4
    预混料 Premix1/% 1 1 1
    合计 Total 100.0 100.00 100.00
    营养水平 Nutrient levels (DM basis)2
    代谢能 Metabolizable energy, ME/(MJ·kg−1) 8.42 8.42 8.42
    干物质 Dry matter, DM 91.85 91.81 91.92
    有机物质 Organic matter, OM 85.41 85.51 85.50
    粗蛋白质 Crude protein, CP 14.58 14.44 14.30
    中性洗涤纤维 Neutral detergent fiber, NDF 34.07 35.07 34.95
    酸性洗涤纤维 Acid detergent fiber, ADF 10.87 11.80 12.35
     1预混料为每千克饲粮提供 The premix provided the following per kg of diets: 铁 Fe 25 mg,锰Mn 40 mg,锌 Zn 40 mg,铜 Cu 8 mg,碘 I 0.3 mg,硒Se 0.2 mg,钴 Co 0.1 mg,维生素A VA 940 IU,维生素D VD 111 IU,维生素E VE 20 IU。
     2代谢能为计算值,其余为实测值。ME was a calculated value, while the others were measured values.
    下载: 导出CSV

    表 2  大麦粉碎粒度对育肥湖羊生长性能的影响(n = 18)

    Table 2.  亚博滚球 Effects of barley particle size in diets on growth performance of fattening Hu sheep

    项目
    Item
    2 mm粉碎组
    Small particle size
    3 mm粉碎组
    Middle particle size
    4 mm粉碎组
    Large particle size
    标准误
    SEM
    P
    始重 Initial body weight/kg 29.95 29.51 30.08 0.233 0.604
    末重 Final body weight/kg 46.83 45.11 46.25 0.476 0.382
    干物质采食量 DMI/(kg·d−1) 1.65 1.58 1.63 0.021 0.380
    平均日增重 ADG/(g·d−1) 267.90 247.71 256.68 5.958 0.356
    料重比 F/G 6.24 6.43 6.51 0.100 0.531
     同行不同字母表示差异显著(P < 0.05),有相同或没有字母表示无显著差异(P > 0.05);下表同。
     Different lowercase letters within the same row indicate significant differences at the 0.05 level, but the same or no letters indicate no significant differences at the 0.05 level. this is applicable for the following tables as well.
    下载: 导出CSV

    表 3  大麦粉碎粒度对育肥湖羊养分表观消化率的影响(n = 6)

    Table 3.  Effects of barley particle size in diets on nutrient apparent digestibility of fattening Hu sheep/%

    项目
    Item
    2 mm粉碎组
    Small particle size
    3 mm粉碎组
    Middle particle size
    4 mm粉碎组
    Large particle size
    标准误
    SEM
    P
    干物质消化率 Digestibility of DM 65.52 64.87 65.73 0.524 0.805
    有机物质消化率 Digestibility of OM 67.81 67.39 68.19 0.469 0.805
    粗蛋白质消化率 Digestibility of CP 78.30 77.31 77.24 0.500 0.652
    中性洗涤纤维消化率 Digestibility of NDF 49.83b 53.58b 58.13a 1.087 0.002
    酸性洗涤纤维消化率 Digestibility of ADF 23.27b 28.80ab 29.88a 1.221 0.050
    下载: 导出CSV

    表 4  大麦粉碎粒度对育肥湖羊瘤胃中挥发性脂肪酸的影响(n = 10)

    Table 4.  Effect of barley particle size in diets on volatile fatty acids in the rumen of fattening Hu sheep

    项目
    Item
    2 mm粉碎组
    Small particle size
    3 mm粉碎组
    Middle particle size
    4 mm粉碎组
    Large particle size
    标准误
    SEM
    P
    总挥发性脂肪酸
    Total volatile fatty acids(TVFA)/(mmol·L−1)
    101.75 109.61 112.7 3.488 0.447
    乙酸 Acetate/(mmol·L−1) 49.72 49.58 54.47 1.334 0.235
    丙酸 Propionate/(mmol·L−1) 34.75 39.78 38.73 2.648 0.738
    异丁酸 Isobutyrate/(mmol·L−1) 0.77 0.34 0.44 0.098 0.171
    丁酸 Butyrate/(mmol·L−1) 12.15 15.85 14.64 1.211 0.472
    异戊酸 Isovalerate/(mmol·L−1) 1.30 0.44 1.28 0.224 0.198
    戊酸 Valerate/(mmol·L−1) 3.06 3.63 3.10 0.279 0.659
    乙酸/丙酸 Acetate/propionate 1.65 1.40 1.61 0.110 0.624
    瘤胃液 Rumen fluid pH 5.31 5.24 5.26 0.041 0.843
    下载: 导出CSV

    表 5  大麦粉碎粒度对育肥湖羊屠宰性能、瘤胃重和瘤胃色度的影响(n = 10)

    Table 5.  亚博滚球 Effects of barley particle size in diets on slaughter characteristics, rumen weight, and rumen chromaticity of fattening Hu sheep

    项目
    Item
    2 mm粉碎组
    Small particle size
    3 mm粉碎组
    Middle particle size
    4 mm粉碎组
    Large particle size
    标准误
    SEM
    P
    宰前活重* Live weight before slaughter/kg 45.96 45.20 45.98 0.268 0.403
    胴体重 Carcass weight/kg 26.35 25.93 26.37 0.201 0.615
    屠宰率 Dressing percentage/% 52.13 52.03 52.58 0.276 0.707
    瘤胃重 Rumen weight/kg 1.35 1.32 1.30 0.020 0.641
    瘤胃亮度 L Rumen lightness
    腹囊 Ventral sac 38.64 39.29 39.22 1.091 0.967
    背囊 Dorsal sac 33.41 33.76 32.95 0.580 0.858
    瘤胃红度 A Rumen redness
    腹囊 Ventral sac 3.86 3.74 4.53 0.234 0.350
    背囊 Dorsal sac 3.35 3.39 3.29 0.123 0.944
    瘤胃黄度 B Rumen yellowness
    腹囊 Ventral sac 3.96 3.72 4.88 0.504 0.625
    背囊 Dorsal sac 2.63 2.71 3.17 0.327 0.781
     *宰前活重为饱饲后的称重。
     Live weight before slaughter was the weight after full feeding.
    下载: 导出CSV

    表 6  大麦粉碎粒度对育肥湖羊肉品质的影响(n = 10)

    Table 6.  亚博滚球 Effect of barley particle size in diets on meat quality in fattening Hu sheep

    项目
    Items
    2 mm粉碎组
    Small particle size
    3 mm粉碎组
    Middle particle size
    4 mm粉碎组
    Large particle size
    标准误
    SEM
    P
    pH 0 h 6.44 6.53 6.44 0.020 0.095
    24 h 5.11 5.10 5.15 0.017 0.412
    滴水损失 Drip loss/% 1.13 1.21 1.22 0.082 0.892
    剪切力 Shearing force/N 63.12b 60.96b 77.50a 2.589 0.012
    失水率 Water loss rate/% 30.30 30.00 29.06 1.078 0.893
    肌肉亮度 L*
    Meat lightness
    0 h 36.91 37.34 37.46 0.339 0.790
    24 h 39.50 38.61 39.08 0.402 0.682
    肌肉红度 A*
    Meat redness
    0 h 17.86 18.41 18.89 0.198 0.102
    24 h 19.62 19.32 19.32 0.254 0.861
    肌肉黄度 B*
    Meat yellowness
    0 h 1.59 1.84 2.12 0.122 0.211
    24 h 6.80 6.45 7.15 0.393 0.776
    下载: 导出CSV
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                          • 通讯作者:  李飞, .cn
                          • 收稿日期:  2019-03-18
                          • 网络出版日期:  2019-11-21
                          通讯作者: 陈斌,
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