1 材料与方法
1.1 试验材料
1.2 试验设计及饲养管理
表1 试验饲粮组成及营养水平(干物质基础)Table 1 Composition and nutrient levels of experimental diets (DM basis) % |
| 项目 Items | 对照组 Control group | 试验Ⅰ组 Trial group Ⅰ | 试验Ⅱ组 Trial group Ⅱ | 试验Ⅲ组 Trial group Ⅲ |
|---|---|---|---|---|
| 原料Ingredients | ||||
| 玉米Corn | 37.00 | 37.00 | 37.00 | 37.00 |
| 麸皮Wheat bran | 6.00 | 6.00 | 6.00 | 6.00 |
| 豆粕Soybean meal | 3.00 | 3.00 | 3.00 | 3.00 |
| 菜籽粕Rapeseed meal | 6.00 | 6.00 | 6.00 | 6.00 |
| 干酒糟及其可溶物DDGS | 6.00 | 6.00 | 6.00 | 6.00 |
| 喷浆玉米皮Spraying corn husk | 8.36 | 8.36 | 8.36 | 8.36 |
| 预混料Premix1) | 3.64 | 3.64 | 3.64 | 3.64 |
| 玉米秸秆Corn stalk | 9.00 | 7.00 | 5.00 | 3.00 |
| 苜蓿干草Alfalfa hay | 21.00 | 18.00 | 15.00 | 12.00 |
| 白蒺藜副产物Tribulus terrestris by-products | 5.00 | 10.00 | 15.00 | |
| 合计Total | 100.00 | 100.00 | 100.00 | 100.00 |
| 营养水平Nutrient levels2) | ||||
| 代谢能ME/(MJ/kg) | 10.25 | 10.29 | 10.33 | 10.38 |
| 粗蛋白质CP | 15.16 | 15.21 | 15.27 | 15.18 |
| 中性洗涤纤维NDF | 46.42 | 45.43 | 44.51 | 42.93 |
| 酸性洗涤纤维ADF | 17.34 | 17.02 | 16.92 | 17.18 |
| 钙Ca | 1.57 | 1.34 | 1.57 | 1.47 |
| 磷P | 0.73 | 0.75 | 0.77 | 0.76 |
1)每千克预混料中含有 One kilogram of premix contained the following:VA 250 000 IU,VE 375 IU,VD3 100 000 IU,Fe 18 750 mg,Cu 875 mg,Zn 3 750 mg,Mn 3 750 mg,Se 125 mg,I 250 mg,Co 50 mg。 2)代谢能根据NY/T 816—2021计算得出,其余为实测值。ME was calculated according to NY/T 816—2021, while the others were measured values. |
1.3 样品采集和指标测定
1.3.1 生长性能
1.3.2 氮代谢指标及营养物质表观消化率的测定
1.3.3 屠宰性能及肉品质的测定
1.4 数据分析
2 结果与分析
2.1 白蒺藜副产物对滩羊生长性能和经济效益的影响
2.1.1 白蒺藜副产物对滩羊生长性能的影响
表2 白蒺藜副产物对滩羊生长性能的影响Table 2 Effects of Tribulus terrestris by-products on growth performance of Tan sheep (n=17) |
| 项目 Items | 对照组 Control group | 试验Ⅰ组 Trial group Ⅰ | 试验Ⅱ组 Trial group Ⅱ | 试验Ⅲ组 Trial group Ⅲ | P值 P-value |
|---|---|---|---|---|---|
| 初始体重IBW/kg | 26.24±1.06 | 26.78±1.33 | 26.36±1.29 | 26.04±0.84 | 0.536 |
| 终末体重FBW/kg | 39.25±1.84Bb | 40.70±1.34Aa | 39.22±0.86Bb | 38.40±1.14Bb | 0.005 |
| 平均日增重ADG/(g/d) | 216.83±19.82 | 232.00±24.74 | 214.33±23.68 | 206.00±17.15 | 0.073 |
| 干物质采食量DMI/(kg/d) | 1.42±0.29 | 1.43±0.32 | 1.38±0.30 | 1.40±0.28 | 0.658 |
| 料重比F/G | 6.60±0.59 | 6.23±0.67 | 6.51±0.73 | 6.84±0.63 | 0.234 |
同行数据肩标无字母或相同字母表示差异不显著(P>0.05),不同小写字母表示差异显著(P<0.05),不同大写字母表示差异极显著(P<0.01)。下表同。 | |
In the same row, values with no letter or the same letter superscripts mean no significant difference (P>0.05), while with different small letter superscripts mean significant difference (P<0.05), and with different capital letter superscripts mean extremely significant difference (P<0.01). The same as below. |
2.1.2 白蒺藜副产物对滩羊经济效益的影响
表3 白蒺藜副产物对滩羊经济效益的影响Table 3 Effects of Tribulus terrestris by-products on economic benefits of Tan sheep 元/(只·d) |
| 项目 Items | 对照组 Control group | 试验Ⅰ组 Trial group Ⅰ | 试验Ⅱ组 Trial group Ⅱ | 试验Ⅲ组 Trial group Ⅲ |
|---|---|---|---|---|
| 饲料成本Feed cost | 4.08 | 4.01 | 3.96 | 4.03 |
| 人工成本Labor cost | 0.50 | 0.50 | 0.50 | 0.50 |
| 增重收益Weight gain profit | 12.15 | 12.53 | 11.66 | 11.61 |
| 纯利润Net profit | 7.57 | 7.93 | 7.19 | 7.08 |
滩羊活羊价格按2024年市场价54元/kg计算。 | |
The live sheep price of Tan sheep was 54 CNY/kg, which was the market price in 2024. |
2.2 白蒺藜副产物对滩羊消化代谢的影响
2.2.1 白蒺藜副产物对滩羊营养物质表观消化率的影响
表4 白蒺藜副产物对滩羊营养物质表观消化率的影响Table 4 Effects of Tribulus terrestris by-products on nutrient apparent digestibility of Tan sheep (n=3) % |
| 项目 Items | 对照组 Control group | 试验Ⅰ组 Trial group Ⅰ | 试验Ⅱ组 Trial group Ⅱ | 试验Ⅲ组 Trial group Ⅲ | P值 P-value |
|---|---|---|---|---|---|
| 干物质DM | 73.53±1.43Aa | 74.58±0.72Aa | 72.62±0.74Aa | 69.54±1.99Bb | 0.009 |
| 粗蛋白质CP | 59.32±1.21ABab | 61.41±0.96Aa | 58.39±1.51Bb | 54.13±1.77Cc | 0.001 |
| 酸性洗涤纤维ADF | 35.60±1.34 | 37.43±1.83 | 35.89±1.16 | 34.85±1.44 | 0.254 |
| 中性洗涤纤维NDF | 52.96±2.30Aa | 53.55±1.75Aa | 52.10±1.41Aa | 44.40±2.23Bb | 0.001 |
2.2.2 白蒺藜副产物对滩羊氮代谢的影响
表5 白蒺藜副产物对滩羊氮代谢的影响Table 5 Effects of Tribulus terrestris by-products on nitrogen metabolism of Tan sheep (n=3) |
| 项目 Items | 对照组 Control group | 试验Ⅰ组 Trial group Ⅰ | 试验Ⅱ组 Trial group Ⅱ | 试验Ⅲ组 Trial group Ⅲ | P值 P-value |
|---|---|---|---|---|---|
| 进食氮Intake nitrogen/(g/d) | 32.15±0.28Cc | 33.46±0.44Bb | 34.18±0.29Aa | 34.41±0.44Aa | <0.001 |
| 粪氮Fecal nitrogen/(g/d) | 12.41±0.09Bb | 12.89±0.10Bb | 14.79±0.31Aa | 15.17±0.46Aa | <0.001 |
| 尿氮Urine nitrogen/(g/d) | 1.15±0.10 | 1.02±0.08 | 1.13±0.13 | 1.14±0.02 | 0.336 |
| 总排出氮Total nitrogen excretion/(g/d) | 13.56±0.16Bb | 13.91±0.18Bb | 15.92±0.35Aa | 16.31±0.45Aa | <0.001 |
| 可消化氮Digestible nitrogen/(g/d) | 19.73±0.24Bb | 20.57±0.51Aa | 19.39±0.18Bb | 19.24±0.26Bb | 0.004 |
| 沉积氮Retention nitrogen/(g/d) | 18.58±0.14Bb | 19.55±0.59Aa | 18.26±0.10Bb | 18.10±0.24Bb | 0.003 |
| 氮消化率Digestibility of nitrogen/% | 61.38±0.28Aa | 61.47±0.74Aa | 56.73±0.65Bb | 55.91±0.92Bb | <0.001 |
| 氮利用率Utilization rate of nitrogen/% | 57.81±0.16Aa | 58.43±1.00Aa | 53.43±0.66Bb | 52.61±0.85Bb | <0.001 |
| 氮生物学价值 Biological value of nitrogen/% | 94.19±0.46 | 95.05±0.49 | 94.19±0.60 | 94.10±0.03 | 0.100 |
2.3 白蒺藜副产物对滩羊屠宰性能及肉品质的影响
2.3.1 白蒺藜副产物对滩羊屠宰性能的影响
表6 白蒺藜副产物对滩羊屠宰性能的影响Table 6 Effects of Tribulus terrestris by-products on slaughter performance of Tan sheep (n=3) |
| 项目 Items | 对照组 Control group | 试验Ⅰ组 Trial group I | 试验Ⅱ组 Trial group Ⅱ | 试验Ⅲ组 Trial group Ⅲ | P值 P-value |
|---|---|---|---|---|---|
| 宰前活重Live weight at slaughter/kg | 39.67±0.58Bb | 41.00±0.87Aa | 39.33±0.58Bb | 38.50±0.50Bb | 0.009 |
| 胴体重Carcass weight/kg | 19.13±0.57ab | 19.90±0.56a | 18.83±0.32bc | 18.00±0.53c | 0.011 |
| 净肉重Net meat weight/kg | 12.85±0.87 | 13.56±0.92 | 12.63±0.29 | 11.71±0.74 | 0.089 |
| 骨重Bone weight/kg | 4.40±0.18 | 4.29±0.31 | 4.38±0.20 | 4.04±0.28 | 0.336 |
| 尾重Tail weight/kg | 1.80±0.30 | 1.32±0.40 | 1.35±0.39 | 1.01±0.08 | 0.088 |
| 背膘厚度Backfat thickness/mm | 4.77±0.40 | 4.29±0.66 | 4.93±0.54 | 5.08±0.21 | 0.290 |
| 眼肌面积Loin eye area/cm2 | 14.25±0.91 | 13.20±0.61 | 15.17±0.80 | 14.03±0.80 | 0.086 |
| GR值GR value/mm | 14.60±1.04 | 13.55±0.93 | 12.79±0.93 | 12.46±0.69 | 0.078 |
| 骨肉比Bone/meat ratio | 0.34±0.04 | 0.32±0.04 | 0.35±0.02 | 0.35±0.01 | 0.591 |
| 屠宰率Dressing percentage/% | 48.23±0.78a | 48.53±0.55a | 47.88±0.17ab | 46.75±0.82b | 0.039 |
2.3.2 白蒺藜副产物对滩羊肉品质的影响
表7 白蒺藜副产物对滩羊肉品质的影响Table 7 Effects of Tribulus terrestris by-products on meat quality of Tan sheep (n=3) |
| 项目 Items | 对照组 Control group | 试验I组 Trial group I | 试验Ⅱ组 Trial group Ⅱ | 试验Ⅲ组 Trial group Ⅲ | P值 P-value | |
|---|---|---|---|---|---|---|
| 滴水损失Drip loss/% | 36.60±0.69 | 37.31±0.81 | 36.23±0.57 | 36.84±0.61 | 0.324 | |
| 剪切力Shear force/N | 26.16±1.80b | 28.84±2.50b | 28.96±1.58b | 36.43±5.12a | 0.019 | |
| 熟肉率Cooked meat rate/% | 58.73±0.77 | 61.40±2.23 | 58.66±2.75 | 56.57±1.09 | 0.080 | |
| 肉色Muscle color | 红度值a* value | 5.52±0.26ab | 6.08±0.27a | 5.87±0.39a | 4.97±0.55b | 0.035 |
| 黄度值b* value | 16.16±1.34 | 15.83±0.44 | 16.03±0.83 | 15.15±0.72 | 0.554 | |
| 亮度值L* value | 34.15±1.31 | 30.58±1.83 | 30.81±1.69 | 31.80±1.27 | 0.077 | |
2.3.3 白蒺藜副产物对滩羊肌肉常规营养成分含量的影响
表8 白蒺藜副产物对滩羊肌肉常规营养成分含量的影响Table 8 Effects of Tribulus terrestris by-products on routine nutrient contents of Tan sheep (n=3) % |
| 项目 Items | 对照组 Control group | 试验Ⅰ组 Trial group Ⅰ | 试验Ⅱ组 Trial group Ⅱ | 试验Ⅲ组 Trial group Ⅲ | P值 P-value |
|---|---|---|---|---|---|
| 水分Moisture | 71.21±1.24 | 72.28±1.84 | 71.43±2.88 | 71.44±2.32 | 0.930 |
| 粗蛋白质CP | 20.04±0.35 | 19.57±0.49 | 19.75±0.51 | 19.86±0.38 | 0.633 |
| 粗脂肪EE | 7.01±0.71 | 6.16±0.27 | 6.57±0.62 | 6.96±0.69 | 0.087 |
| 粗灰分Ash | 1.45±0.05 | 1.42±0.05 | 1.47±0.04 | 1.47±0.08 | 0.685 |
表中各营养成分含量均为鲜重基础。 | |
The contents of all nutrients in the table were fresh-weight basis. |

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