1 材料与方法
1.1 试验设计及饲养管理
1.2 试验饲粮
表1 饲粮组成及营养水平(干物质基础)Table 1 Composition and nutrient levels of diets (DM basis)% |
| 项目 Items | 对照组 Control group | 柠条对照组 Caragana control group | 试验1组 Experimental group 1 | 试验2组 Experimental group 2 | 试验3组 Experimental group 3 | 试验4组 Experimental group 4 | 试验5组 Experimental group 5 |
|---|---|---|---|---|---|---|---|
| 原料 Ingredients | |||||||
| 玉米秸秆 Corn stalk | 25.0 | 10.0 | 24.6 | 24.4 | 24.2 | 24.0 | 23.8 |
| 玉米 Corn | 45.0 | 45.0 | 45.0 | 45.0 | 45.0 | 45.0 | 45.0 |
| 棉籽粕 Cottonseed meal | 8.0 | 5.0 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 |
| 豆粕 Soybean meal | 7.0 | 5.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 |
| 大豆浓缩蛋白 Soybean protein concentrate | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| 菜籽粕 Rapeseed meal | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 |
| 干酒糟及其可溶物 DDGS | 5.0 | ||||||
| 甘蔗糖蜜 Cane molasses | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 |
| 氯化钠 NaCl | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |
| 石粉 Limestone | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 |
| 碳酸氢钠 NaHCO3 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 |
| 磷酸氢钙 CaHPO4 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 |
| 硫酸钙 CaSO4 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |
| 氯化铵 NH4Cl | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| 预混料 Premix1) | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 |
| 柠条 Caragana | 15.0 | ||||||
| 柠条水提取物 Caragana water extract | 0.4 | 0.6 | 0.8 | 1.0 | 1.2 | ||
| 合计 Total | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| 营养水平 Nutrient levels2) | |||||||
| 粗蛋白质 CP | 12.77 | 14.66 | 13.02 | 13.77 | 13.55 | 14.13 | 14.78 |
| 粗脂肪 EE | 3.34 | 2.98 | 2.77 | 2.48 | 2.93 | 2.91 | 2.69 |
| 中性洗涤纤维 NDF | 42.45 | 29.56 | 38.98 | 39.66 | 39.25 | 39.29 | 40.38 |
| 酸性洗涤纤维 ADF | 18.17 | 16.77 | 17.70 | 17.73 | 17.04 | 17.48 | 18.63 |
| 木质素 Lignin | 2.66 | 2.90 | 2.86 | 2.44 | 2.71 | 2.49 | 2.18 |
| 粗灰分 Ash | 8.12 | 8.61 | 8.63 | 7.31 | 7.18 | 8.79 | 8.33 |
| 钙 Ca | 1.08 | 1.18 | 0.98 | 1.06 | 1.75 | 1.33 | 1.88 |
| 磷 P | 0.57 | 0.56 | 0.46 | 0.44 | 0.56 | 0.47 | 0.58 |
| 代谢能 ME/(MJ/kg) | 9.29 | 9.31 | 9.28 | 9.27 | 9.25 | 9.24 | 9.23 |
1)每千克预混料含有 One kilogram of the premix contained the following:VA 1 000 000 IU,VD3 500 000 IU,VE 2 000 IU,烟酸 niacin 1 000 mg,Cu 4.5 g,Fe 6 g,Mn 4 g,Zn 8 g,I 80 mg,Co 40 mg。 2)代谢能为计算值,其余营养水平为实测值。ME was a calculated value, while the other nutrient levels were measured values. |
1.3 测定指标及方法
1.3.1 生长性能指标测定
1.3.2 屠宰性能指标测定
1.3.3 肌肉品质指标测定
1.3.4 肌肉脂肪酸含量测定
1.3.5 肌肉抗氧化指标测定
1.4 数据统计分析
2 结果
2.1 柠条水提取物对杜蒙杂交羊生长性能的影响
表2 柠条水提取物对杜蒙杂交羊生长性能的影响Table 2 Effects of caragana water extract on growth performance of Dumeng hybrid sheep (n=9) |
| 项目 Items | 对照组 Control group | 柠条对照组 Caragana control group | 试验1组 Experimental group 1 | 试验2组 Experimental group 2 | 试验3组 Experimental group 3 | 试验4组 Experimental group 4 | 试验5组 Experimental group 5 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 初始体重 Initial BW/kg | 20.92 ±0.74 | 20.01 ±1.16 | 21.47 ±1.10 | 22.20 ±0.68 | 22.83 ±1.35 | 21.99 ±0.56 | 21.13 ±0.80 | |||||||
| 终末体重 Final BW/kg | 29.61 ±2.44b | 29.29 ±1.59b | 33.48 ±1.96a | 34.13 ±2.79a | 34.33 ±1.96a | 28.44 ±1.05bc | 26.79 ±1.40c | |||||||
| 平均日增重 ADG/(g/d) | 173.80 ±56.37b | 185.50 ±24.55b | 211.63 ±37.20a | 232.75 ±47.93a | 230.00 ±27.06a | 133.43 ±26.55c | 111.71 ±12.98c | |||||||
| 平均日采食量 ADFI/(g/d) | 1 310.4 ±187.2 | 1 295.3 ±155.3 | 1 600.4 ±246.8 | 1 590.4 ±216.7 | 1 655.3 ±251.4 | 1 395.4 ±179.7 | 1 315.8 ±188.1 | |||||||
| 料重比 F/G | 6.93 ±0.35b | 5.64 ±0.02b | 7.56 ±0.01b | 6.83 ±0.01b | 7.19 ±0.02b | 10.75 ±0.14a | 11.77 ±0.03a | |||||||
同行数据肩标不同小写字母表示差异显著(P<0.05),相同小写字母或无字母表示差异不显著(P≥0.05)。下表同。 | |
In the same row, values with different small letter superscripts mean significant difference (P<0.05), while with the same small letter or no letter superscripts mean no significant difference (P≥0.05). The same as below. |
2.2 柠条水提取物对杜蒙杂交羊屠宰性能的影响
表3 柠条水提取物对杜蒙杂交羊屠宰性能的影响Table 3 Effects of caragana water extract on slaughter performance of Dumeng hybrid sheep (n=3) |
| 项目 Items | 对照组 Control group | 柠条对照组 Caragana control group | 试验1组 Experimental group 1 | 试验2组 Experimental group 2 | 试验3组 Experimental group 3 | 试验4组 Experimental group 4 | 试验5组 Experimental group 5 |
|---|---|---|---|---|---|---|---|
| 活重 Live weight/kg | 29.62±2.44b | 29.26±1.59b | 33.51±1.96a | 34.03±2.79a | 34.06±1.96a | 28.64±1.05bc | 26.89±1.40c |
| 胴体重 Carcass weight/kg | 13.83±0.37b | 13.13±1.44b | 18.33±1.19a | 18.77±0.18a | 17.93±1.02a | 13.85±0.55b | 13.07±0.57b |
| 屠宰率 Dressing percentage/% | 46.69±1.86b | 44.87±5.32b | 54.70±1.94a | 55.15±2.00a | 52.64±1.62a | 48.35±3.05b | 48.60±2.79b |
| 眼肌面积 Loin muscle area/cm2 | 17.42±0.58b | 21.34±0.66ab | 27.72±8.78a | 24.45±4.42ab | 20.91±2.68ab | 16.63±1.32b | 17.04±1.34b |
2.3 柠条水提取物对杜蒙杂交羊肌肉品质的影响
表4 柠条水提取物对杜蒙杂交羊肌肉品质的影响Table 4 Effects of caragana water extract on muscle quality of Dumeng hybrid sheep (n=3) |
| 项目 Items | 对照组 Control group | 柠条对照组 Caragana control group | 试验1组 Experimental group 1 | 试验2组 Experimental group 2 | 试验3组 Experimental group 3 | 试验4组 Experimental group 4 | 试验5组 Experimental group 5 |
|---|---|---|---|---|---|---|---|
| 熟肉率 Cooked meat percentage/% | 45.90±1.13 | 45.09±0.78 | 45.71±0.84 | 43.84±0.94 | 43.84±1.09 | 44.30±1.56 | 44.24±1.23 |
| pH45 min | 6.50±0.04 | 6.52±0.32 | 6.44±0.07 | 6.48±0.17 | 6.38±0.17 | 6.77±0.09 | 6.49±0.10 |
| pH24 h | 5.45±0.07d | 5.59±0.01bc | 5.58±0.03bc | 5.62±0.04abc | 5.69±0.01ab | 5.72±0.03a | 5.55±0.01cd |
| 亮度 L* | 37.13±0.50b | 40.76±0.98a | 36.78±1.31b | 36.73±1.42b | 35.53±0.37b | 37.83±1.42ab | 35.69±0.49b |
| 红度 a* | 15.10±0.95b | 16.27±1.67ab | 16.97±0.54ab | 17.68±0.47ab | 17.48±0.23ab | 18.28±0.86a | 17.13±0.36ab |
| 黄度 b* | 2.82±0.86 | 3.29±0.69 | 3.32±0.45 | 4.06±0.44 | 3.39±0.23 | 3.85±0.34 | 3.12±0.18 |
表5 柠条水提取物对杜蒙杂交羊肌肉营养成分含量的影响Table 5 Effects of caragana water extract on muscle nutrient contents of Dumeng hybrid sheep (n=3)% |
| 项目 Items | 对照组 Control group | 柠条对照组 Caragana control group | 试验1组 Experimental group 1 | 试验2组 Experimental group 2 | 试验3组 Experimental group 3 | 试验4组 Experimental group 4 | 试验5组 Experimental group 5 |
|---|---|---|---|---|---|---|---|
| 水分 Moisture | 76.46±0.46 | 76.89±0.02 | 76.31±0.90 | 76.12±0.18 | 76.65±0.63 | 77.31±0.89 | 77.46±1.18 |
| 粗蛋白质 CP | 18.84±0.44 | 19.00±0.24 | 19.80±0.67 | 19.84±0.43 | 19.50±0.74 | 18.89±1.09 | 18.55±1.24 |
| 粗脂肪 EE | 2.16±0.50 | 1.80±0.27 | 1.88±0.24 | 1.76±0.24 | 1.94±0.46 | 1.85±0.41 | 2.06±0.31 |
| 粗灰分 Ash | 1.99±0.23 | 1.83±0.12 | 2.22±0.29 | 2.17±0.41 | 1.94±0.12 | 1.95±0.28 | 2.03±0.30 |
| 总磷 TP | 0.18±0.01 | 0.17±0.01 | 0.16±0.01 | 0.18±0.02 | 0.17±0.01 | 0.16±0.01 | 0.15±0.01 |
2.4 柠条水提取物对杜蒙杂交羊肌肉脂肪酸含量的影响
表6 柠条水提取物对杜蒙杂交羊肌肉脂肪酸含量的影响Table 6 Effects of caragana water extract on muscle fatty acid contents of Dumeng hybrid sheep (n=3) |
| 项目 Items | 对照组 Control group | 柠条对照组 Caragana control group | 试验1组 Experimental group 1 | 试验2组 Experimental group 2 | 试验3组 Experimental group 3 | 试验4组 Experimental group 4 | 试验5组 Experimental group 5 |
|---|---|---|---|---|---|---|---|
| 辛酸 C8:0/% | 1.45±0.29ab | 1.30±0.10ab | 1.09±0.08b | 1.43±0.03ab | 1.27±0.22ab | 1.48±0.29a | 1.42±0.16ab |
| 癸酸 C10:0/% | 0.16±0.01 | 0.03±0.01 | 0.08±0.01 | 0.03±0.00 | 0.43±0.01 | 0.14±0.00 | 0.10±0.00 |
| 十一烷酸 C11:0/% | 1.43±0.29 | 1.27±0.10 | 1.06±0.08 | 1.42±0.03 | 1.24±0.23 | 1.44±0.30 | 1.39±0.17 |
| 月桂酸 C12:0/% | 0.33±0.00 | 0.23±0.00 | 0.28±0.00 | 0.13±0.00 | 0.44±0.00 | 0.26±0.00 | 0.21±0.00 |
| 十三烷酸 C13:0/% | 1.36±0.27 | 1.21±0.09 | 1.01±0.07 | 1.34±0.02 | 1.18±0.02 | 1.37±0.02 | 1.33±0.16 |
| 肉豆蔻酸 C14:0/% | 5.57±0.78 | 4.08±0.21 | 3.81±0.43 | 5.08±0.37 | 5.35±0.75 | 5.73±0.67 | 6.02±0.13 |
| 十五烷酸 C15:0/% | 1.76±0.33ab | 1.51±0.06ab | 1.32±0.06b | 1.65±0.09ab | 1.54±0.08ab | 1.70±0.31ab | 1.81±0.21a |
| 十五烷烯酸 C15:1/% | 9.74±0.21 | 9.30±0.58 | 8.59±0.68 | 9.31±0.43 | 8.97±0.91 | 8.96±0.87 | 9.96±0.87 |
| 棕榈酸 C16:0/% | 6.08±0.59 | 4.76±0.36 | 4.82±0.90 | 5.06±0.43 | 5.25±0.69 | 5.23±0.89 | 5.61±0.28 |
| 棕榈烯酸 C16:1/% | 3.57±0.08 | 2.94±0.21 | 3.11±0.18 | 3.50±0.18 | 3.32±0.20 | 3.81±0.84 | 3.88±0.31 |
| 十七烷酸 C17:0/% | 1.79±0.21a | 1.27±0.09ab | 1.13±0.03b | 1.38±0.02ab | 1.70±0.06a | 1.41±0.25ab | 1.37±0.14ab |
| 十七烷烯酸 C17:1/% | 1.21±0.04 | 1.08±0.01 | 0.91±0.01 | 1.20±0.02 | 1.06±0.20 | 1.23±0.05 | 1.18±0.14 |
| 硬脂酸 C18:0/% | 12.97±0.01 | 15.93±3.13 | 10.17±0.46 | 13.22±0.49 | 11.61±0.55 | 10.45±0.44 | 14.29±0.72 |
| 油酸 C18:1n9c/% | 20.17±0.64a | 13.34±0.76b | 16.61±0.80ab | 12.60±0.55b | 12.48±0.65b | 11.49±0.15b | 13.94±0.60b |
| 反油酸 C18:1n9t/% | 7.26±0.45 | 7.42±0.32 | 7.46±0.26 | 7.03±0.12 | 7.16±0.66 | 6.64±0.73 | 8.33±0.82 |
| 反亚油酸 C18:2n6t/% | 0.57±0.14 | 0.45±0.01 | 0.52±0.02 | 0.50±0.01 | 0.62±0.03 | 0.42±0.03 | 0.61±0.01 |
| α-麻酸 C18:3n3/% | 0.18±0.00 | 0.18±0.00 | 0.18±0.00 | 0.18±0.00 | 0.19±0.00 | 0.19±0.00 | 0.19±0.00 |
| γ-亚麻酸 C18:3n6/% | 0.06±0.00 | 0.08±0.00 | 0.09±0.00 | 0.10±0.00 | 0.08±0.00 | 0.10±0.00 | 0.10±0.00 |
| 二十碳一烯酸 C20:1/% | 0.30±0.00 | 0.27±0.01 | 0.23±0.01 | 0.30±0.02 | 0.26±0.01 | 0.31±0.03 | 0.29±0.00 |
| 二十碳二烯酸 C20:2/% | 5.41±0.09 | 4.82±0.01 | 4.02±0.31 | 5.33±0.02 | 4.69±0.02 | 5.45±0.03 | 5.25±0.06 |
| 二十碳三烯酸 C20:3n3/% | 4.41±0.80ab | 4.44±0.04ab | 4.08±0.05b | 4.88±0.31ab | 4.42±0.21ab | 5.47±0.11a | 4.90±0.09ab |
| 二十碳三烯酸 C20:3n6/% | 0.43±0.01 | 0.43±0.02 | 0.34±0.01 | 0.45±0.04 | 0.31±0.01 | 0.46±0.01 | 0.45±0.03 |
| 花生四烯酸 C20:4n6/% | 5.29±0.92 | 5.51±0.52 | 5.25±0.44 | 5.48±0.61 | 5.10±0.36 | 5.21±0.48 | 5.21±0.48 |
| 二十一烯酸 C21:0/% | 0.91±0.01 | 0.81±0.02 | 0.68±0.05 | 0.89±0.03 | 0.79±0.10 | 0.92±0.05 | 0.88±0.06 |
| 榆树酸 C22:0/% | 1.35±0.31 | 1.30±0.11 | 1.08±0.08 | 1.45±0.02 | 1.27±0.02 | 1.29±0.01 | 1.42±0.02 |
| 顺芥子酸甲酯 C22:1n9/% | 10.15±0.22 | 16.42±0.95 | 14.38±0.85 | 11.61±0.10 | 11.66±0.41 | 16.00±0.61 | 10.43±1.12 |
| 二十二碳二烯酸 C22:2/% | 0.99±0.20 | 0.88±0.07 | 0.73±0.05 | 0.98±0.02 | 0.86±0.02 | 1.00±0.21 | 0.97±0.12 |
| 二十二碳六烯酸 C22:6n3/% | 1.33±0.06 | 1.02±0.08 | 0.80±0.02 | 1.14±0.02 | 1.04±0.06 | 1.16±0.24 | 0.97±0.02 |
| 二十三烯酸 C23:0/% | 1.11±0.22 | 0.99±0.08 | 0.82±0.06 | 1.09±0.02 | 0.96±0.08 | 1.12±0.23 | 1.08±0.13 |
| 木腊酸 C24:0/% | 2.37±0.48 | 2.11±0.18 | 1.75±0.13 | 2.33±0.04 | 2.05±0.03 | 2.38±0.50 | 2.29±0.28 |
| 神经酸 C24:1/% | 0.69±0.06 | 0.54±0.07 | 1.04±0.01 | 0.89±0.24 | 0.61±0.02 | 0.78±0.05 | 0.91±0.04 |
| 饱和脂肪酸 SFA/% | 29.66±2.86 | 31.24±9.14 | 29.07±2.83 | 35.97±3.03 | 34.87±0.94 | 31.29±0.25 | 33.91±1.90 |
| 不饱和脂肪酸 UFA/% | 70.33±2.86 | 68.76±9.14 | 70.92±5.83 | 64.03±3.03 | 65.12±4.94 | 68.71±5.25 | 66.09±9.90 |
| 单不饱和脂肪酸 MUFA/% | 52.89±0.92 | 51.32±7.70 | 51.63±2.63 | 45.57±2.93 | 45.88±2.31 | 48.46±5.03 | 49.16±4.96 |
| 多不饱和脂肪酸 PUFA/% | 17.44±1.51 | 17.43±1.81 | 19.28±1.78 | 18.45±0.50 | 19.24±2.58 | 20.24±1.16 | 17.74±2.40 |
| n-3多不饱和脂肪酸 n-3 PUFA/% | 4.92±0.44ab | 5.53±0.54ab | 4.40±0.18b | 5.70±0.62ab | 4.83±0.06ab | 6.69±0.21a | 5.29±0.03ab |
| n-6多不饱和脂肪酸 n-6 PUFA/% | 6.17±0.94 | 6.27±0.09 | 6.15±0.08 | 6.46±0.48 | 5.85±0.38 | 7.18±0.70 | 6.30±0.42 |
| 多不饱和脂肪酸/ 饱和脂肪酸 PUFA/SFA | 0.59±0.01 | 0.61±0.02 | 0.71±0.04 | 0.52±0.01 | 0.57±0.01 | 0.66±0.12 | 0.58±0.02 |
2.5 柠条水提取物对杜蒙杂交羊肌肉抗氧化指标的影响
表7 柠条水提取物对杜蒙杂交羊肌肉抗氧化指标的影响Table 7 Effects of caragana water extract on muscle antioxidant indices of Dumeng hybrid sheep (n=3) |
| 项目 Items | 对照组 Control group | 柠条对照组 Caragana control group | 试验1组 Experimental group 1 | 试验2组 Experimental group 2 | 试验3组 Experimental group 3 | 试验4组 Experimental group 4 | 试验5组 Experimental group 5 |
|---|---|---|---|---|---|---|---|
| 超氧化物歧化酶 SOD/(U/mg prot) | 708.5 ±28.1c | 720.5 ±56.1c | 745.8 ±19.1c | 1 135.7 ±78.8ab | 1 110.6 ±95.4ab | 1 193.7 ±10.4a | 1 050.5 ±29.9b |
| 谷胱甘肽过氧化物酶 GSH-Px/(U/mg prot) | 74.30 ±14.10f | 89.81 ±9.73ef | 105.07 ±6.81e | 129.29 ±5.03d | 228.69 ±15.74c | 313.28 ±16.52a | 263.84 ±13.77b |
| 过氧化氢酶 CAT/(U/mg prot) | 74.05 ±3.28d | 76.42 ±7.03d | 84.51 ±2.49c | 89.96 ±2.14bc | 96.26 ±2.95b | 111.14 ±4.38a | 107.84 ±2.86a |
| 总抗氧化能力 T-AOC/(mmol/g prot) | 0.044 ±0.000c | 0.049 ±0.000c | 0.057 ±0.010b | 0.060 ±0.000b | 0.058 ±0.000b | 0.071 ±0.000a | 0.067 ±0.000a |
