1 材料与方法
1.1 试验材料
表1 辣椒秸秆营养成分Table 1 Nutrients of pepper stalk% |
| 项目 Items | 含量 Content |
|---|---|
| 干物质 DM | 92.02 |
| 粗蛋白质 CP | 6.81 |
| 粗脂肪 EE | 1.13 |
| 中性洗涤纤维 NDF | 54.66 |
| 酸性洗涤纤维 ADF | 38.17 |
| 粗灰分 Ash | 7.16 |
| 钙 Ca | 1.01 |
| 磷 P | 0.12 |
除干物质外,其余营养成分含量均为干物质基础。 | |
Except for dry matter, the contents of the other nutrients were based on dry matter. |
1.2 试验时间及地点
1.3 试验设计和试验饲粮
表2 试验饲粮组成及营养水平(干物质基础)Table 2 Composition and nutrient levels of experimental diets (DM basis)% |
| 项目 Items | 对照组 Control group | 5%辣椒秸秆组 5% pepper stalk group | 10%辣椒秸秆组 10% pepper stalk group | 15%辣椒秸秆组 15% pepper stalk group | 20%辣椒秸秆组 20% pepper stalk group |
|---|---|---|---|---|---|
| 原料 Ingredients | |||||
| 苜蓿干草 Alfalfa hay | 10.88 | 9.21 | 7.54 | 6.38 | 5.22 |
| 大豆秸秆 Soybean stalk | 14.03 | 12.27 | 10.45 | 8.55 | 6.80 |
| 稻草 Straw | 18.12 | 16.38 | 14.49 | 12.39 | 10.22 |
| 辣椒秸秆 Pepper stalk | 5.01 | 10.00 | 15.00 | 20.00 | |
| 玉米 Corn | 31.04 | 30.76 | 30.75 | 30.69 | 30.48 |
| 麸皮 Wheat bran | 7.89 | 7.89 | 7.74 | 7.60 | 7.67 |
| 棉籽粕 Cottonseed meal | 8.88 | 9.73 | 10.29 | 10.71 | 11.35 |
| 向日葵粕 Sunflower meal | 4.98 | 4.57 | 4.57 | 4.50 | 4.09 |
| 石粉 Limestone | 0.12 | 0.13 | 0.12 | 0.13 | 0.11 |
| 氯化钠 NaCl | 0.53 | 0.53 | 0.53 | 0.53 | 0.53 |
| 磷酸氢钙 CaHPO4 | 0.51 | 0.50 | 0.50 | 0.50 | 0.51 |
| 小苏打 NaHCO3 | 0.51 | 0.51 | 0.51 | 0.51 | 0.51 |
| 预混料 Premix1) | 2.51 | 2.51 | 2.51 | 2.51 | 2.51 |
| 合计 Total | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
| 营养水平 Nutrient levels2) | |||||
| 总能 GE/(MJ/kg) | 15.80 | 16.19 | 15.69 | 16.02 | 15.57 |
| 粗蛋白质 CP | 13.11 | 13.63 | 13.46 | 13.74 | 13.86 |
| 可消化粗蛋白质 DCP | 9.07 | 9.54 | 9.39 | 9.64 | 9.74 |
| 粗脂肪 EE | 2.12 | 2.56 | 1.97 | 2.49 | 2.45 |
| 中性洗涤纤维 NDF | 55.50 | 56.65 | 54.06 | 56.59 | 54.81 |
| 酸性洗涤纤维 ADF | 25.15 | 25.37 | 24.56 | 26.78 | 28.52 |
| 钙 Ca | 1.35 | 1.57 | 1.79 | 1.72 | 1.63 |
| 磷 P | 0.47 | 0.42 | 0.31 | 0.48 | 0.42 |
1)每千克预混料中含有 One kilogram of premix contained the following:VA 150 000 IU,VD3 56 500 IU,VE 8 000 IU,Se (as sodium selenite) 14 mg,I (as potassium iodide) 58 mg,Cu (as copper sulfate) 290 mg,Mn (as manganese sulfate) 1 925 mg,Zn (as zinc oxide) 2 050 mg,Co (as cobalt sulfate) 24 mg。 2)营养水平中可消化粗蛋白质以《肉羊营养需要量》(NY/T 816—2021)中附表给出的可消化粗蛋白质公式进行计算,其余指标均为实测值。DCP in nutrient levels was calculated according to DCP formula given in attached table of Nutrient Requirements of Meat-Type Sheep and Goat (NY/T 816—2021), and the other indicators were measured values. |
1.4 饲养管理
1.5 样品采集和指标测定
1.5.1 生长性能
1.5.2 养分表观消化率
1.5.3 血清生化指标
1.5.4 血清抗氧化指标
1.5.5 血清免疫指标
1.6 数据统计与分析
2 结果与分析
2.1 不同水平辣椒秸秆饲粮对杜湖杂交羔羊生长性能的影响
表3 不同水平辣椒秸秆饲粮对杜湖杂交羔羊生长性能的影响Table 3 Effects of different pepper stalk level diets on growth performance of Dorper×Hu hybrid lambs (n=10) |
| 项目 Items | 时间 Time | 对照组 Control group | 5%辣椒秸秆组 5% pepper stalk group | 10%辣椒秸秆组 10% pepper stalk group | 15%辣椒秸秆组 15% pepper stalk group | 20%辣椒秸秆组 20% pepper stalk group | P值 P-value |
|---|---|---|---|---|---|---|---|
体重 BW/kg | 第1天 Day 1 | 29.93±1.42 | 30.27±2.24 | 29.43±2.26 | 29.64±2.44 | 29.23±2.57 | 0.87 |
| 第29天 Day 29 | 38.40±1.90 | 38.73±3.27 | 39.30±3.40 | 38.03±3.37 | 35.37±2.40 | 0.07 | |
| 第57天 Day 57 | 44.52±2.36a | 45.79±4.66a | 46.23±4.19a | 45.74±4.65a | 40.60±2.93b | 0.02 | |
平均日增重 ADG/(g/d) | 第1~28天 Days 1 to 28 | 302.38±76.20ab | 302.38±60.50ab | 352.38±121.34a | 299.60±70.43ab | 219.05±87.46b | 0.04 |
| 第29~56天 Days 29 to 56 | 218.65±48.21 | 251.98±73.28 | 247.62±67.13 | 275.40±94.70 | 186.90±44.43 | 0.08 | |
干物质采食量 DMI/(kg/d) | 第1~28天 Days 1 to 28 | 1.74±0.10BCb | 1.78±0.12Bb | 1.90±0.20Aa | 1.66±0.15CDc | 1.62±0.13Dc | <0.01 |
| 第29~56天 Days 29 to 56 | 2.04±0.08Bb | 2.02±0.13BCb | 2.28±0.05Aa | 2.05±0.11Bb | 1.96±0.09Cc | <0.01 | |
料重比 F/G | 第1~28天 Days 1 to 28 | 6.16±1.76 | 6.13±1.43 | 6.38±3.32 | 5.87±1.72 | 8.52±3.45 | 0.19 |
| 第29~56天 Days 29 to 56 | 9.72±2.01 | 8.69±2.75 | 10.00±3.32 | 8.37±3.22 | 11.04±2.74 | 0.31 |
同行数据肩标无字母或相同小写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 small 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. |
2.2 不同水平辣椒秸秆饲粮对杜湖杂交羔羊养分表观消化率的影响
表4 不同水平辣椒秸秆饲粮对杜湖杂交羔羊养分表观消化率的影响Table 4 Effects of different pepper stalk level diets on nutrient apparent digestibility of Dorper×Hu hybrid lambs (n=5)% |
| 项目 Items | 对照组 Control group | 5%辣椒秸秆组 5% pepper stalk group | 10%辣椒秸秆组 10% pepper stalk group | 15%辣椒秸秆组 15% pepper stalk group | 20%辣椒秸秆组 20% pepper stalk group | P值 P-value |
|---|---|---|---|---|---|---|
| 干物质 DM | 67.67±4.17ABab | 72.15±6.92Aa | 74.76±5.64Aa | 69.04±6.55ABa | 60.64±2.38Bb | <0.01 |
| 有机物 OM | 70.70±3.73ab | 74.73±6.23ab | 77.41±5.03a | 72.15±5.91ab | 67.93±2.28b | 0.04 |
| 粗蛋白质 CP | 70.03±3.06b | 76.42±6.63ab | 79.39±4.13a | 76.40±5.16ab | 71.46±2.61b | 0.02 |
| 粗脂肪 EE | 59.77±5.21 | 63.77±7.35 | 57.26±7.05 | 59.08±0.34 | 50.95±10.56 | 0.10 |
| 中性洗涤纤维 NDF | 66.52±6.60 | 73.63±7.19 | 74.27±7.49 | 70.64±7.11 | 66.02±2.62 | 0.17 |
| 酸性洗涤纤维 ADF | 51.27±11.31 | 60.73±15.28 | 60.72±12.16 | 59.50±8.31 | 54.94±4.97 | 0.58 |
| 总能 GE | 67.40±4.26bc | 74.17±6.11ab | 75.83±5.52a | 70.80±5.85abc | 65.80±2.63c | 0.02 |
2.3 不同水平辣椒秸秆饲粮对杜湖杂交羔羊血清生化指标的影响
表5 不同水平辣椒秸秆饲粮对杜湖杂交羔羊血清生化指标的影响Table 5 Effects of different pepper stalk level diets on serum biochemical indices of Dorper×Hu hybrid lambs (n=10) |
| 项目 Items | 对照组 Control group | 5%辣椒秸秆组 5% pepper stalk group | 10%辣椒秸秆组 10% pepper stalk group | 15%辣椒秸秆组 15% pepper stalk group | 20%辣椒秸秆组 20% pepper stalk group | P值 P-value |
|---|---|---|---|---|---|---|
| 葡萄糖 GLU/(mmol/L) | 5.35±0.54a | 4.97±0.37ab | 4.84±0.43ab | 4.51±0.52b | 4.71±0.44b | 0.04 |
| 乳酸脱氢酶 LDH/(U/L) | 5 290.57±822.61ab | 5 487.94±905.03ab | 5 904.61±764.90a | 4 588.82±277.37b | 5 504.39±683.28ab | 0.04 |
| 肌酸激酶 CK/(U/L) | 230.10±100.56 | 150.63±63.45 | 210.23±80.16 | 225.12±73.78 | 165.55±71.53 | 0.32 |
| 甘油三酯 TG/(mmol/L) | 0.41±0.08 | 0.37±0.08 | 0.35±0.08 | 0.36±0.07 | 0.36±0.09 | 0.78 |
| 总胆固醇 TC/(mmol/L) | 1.75±0.21 | 1.72±0.22 | 1.83±0.24 | 1.93±0.27 | 1.64±0.23 | 0.28 |
| 高密度脂蛋白胆固醇 HDL-C/(mmol/L) | 0.80±0.07 | 0.77±0.09 | 0.80±0.09 | 0.81±0.05 | 0.76±0.08 | 0.74 |
| 低密度脂蛋白胆固醇 LDL-C/(mmol/L) | 0.73±0.14 | 0.76±0.15 | 0.82±0.18 | 0.86±0.18 | 0.67±0.13 | 0.30 |
| 总蛋白 TP/(g/L) | 74.00±5.31b | 78.83±7.69ab | 82.64±3.30a | 77.99±4.12ab | 84.42±4.25a | 0.02 |
| 白蛋白 ALB/(g/L) | 30.36±2.02 | 30.53±1.45 | 30.96±1.79 | 31.80±2.09 | 32.78±1.90 | 0.18 |
| 球蛋白 GLB/(g/L) | 43.63±3.73 | 48.30±7.91 | 51.68±2.68 | 46.19±5.41 | 51.65±5.79 | 0.07 |
| 白球比 A/G | 0.70±0.04 | 0.65±0.12 | 0.60±0.05 | 0.70±0.13 | 0.65±0.12 | 0.39 |
| 尿素氮 UN/(mmol/L) | 9.83±1.18 | 10.04±1.19 | 10.29±1.63 | 9.36±0.98 | 9.11±1.56 | 0.54 |
| 谷丙转氨酶 ALT/(U/L) | 5.70±1.62 | 7.17±2.65 | 7.29±2.06 | 6.09±1.68 | 8.02±2.29 | 0.33 |
| 谷草转氨酶 AST/(U/L) | 20.46±4.75 | 21.18±5.76 | 21.75±5.35 | 17.49±0.83 | 25.03±3.40 | 0.09 |
2.4 不同水平辣椒秸秆饲粮对杜湖杂交羔羊血清抗氧化指标的影响
表6 不同水平辣椒秸秆饲粮对杜湖杂交羔羊血清抗氧化指标的影响Table 6 Effects of different pepper stalk level diets on serum antioxidant indices of Dorper×Hu hybrid lambs (n=10) |
| 项目 Items | 对照组 Control group | 5%辣椒秸秆组 5% pepper stalk group | 10%辣椒秸秆组 10% pepper stalk group | 15%辣椒秸秆组 15% pepper stalk group | 20%辣椒秸秆组 20% pepper stalk group | P值 P-value |
|---|---|---|---|---|---|---|
| 谷胱甘肽过氧化物酶 GSH-Px/(U/mL) | 172.47±16.92Bb | 201.30±10.68ABa | 216.62±20.01Aa | 174.29±29.20Bb | 171.17±27.34Bb | <0.01 |
| 超氧化物歧化酶 SOD/(U/mL) | 130.23±11.46 | 141.41±11.98 | 126.54±13.85 | 137.27±16.86 | 145.21±17.53 | 0.18 |
| 丙二醛 MDA/(nmol/mL) | 2.34±0.22ABb | 2.22±0.25Bb | 2.34±0.24ABb | 2.66±0.30Aa | 2.74±0.19Aa | <0.01 |
| 总抗氧化能力 T-AOC/(mmol/L) | 1.07±0.03 | 1.11±0.04 | 1.14±0.08 | 1.12±0.05 | 1.11±0.05 | 0.33 |
2.5 不同水平辣椒秸秆饲粮对杜湖杂交羔羊血清免疫指标的影响
表7 不同水平辣椒秸秆饲粮对杜湖杂交羔羊血清免疫指标的影响Table 7 Effects of different pepper stalk level diets on serum immune indicators of Dorper×Hu hybrid lambs (n=10) |
| 项目 Items | 对照组 Control group | 5%辣椒 秸秆组 5% pepper stalk group | 10%辣椒 秸秆组 10% pepper stalk group | 15%辣椒 秸秆组 15% pepper stalk group | 20%辣椒 秸秆组 20% pepper stalk group | P值 P-value |
|---|---|---|---|---|---|---|
| 白细胞介素-1β IL-1β/(ng/L) | 21.55±2.67abc | 19.31±2.19c | 22.62±1.99ab | 21.17±2.41bc | 24.26±2.26a | 0.02 |
| 干扰素-γ IFN-γ/(ng/L) | 57.37±6.60b | 66.63±11.15ab | 75.28±10.23a | 70.36±14.77ab | 79.19±11.42a | 0.03 |
| 白细胞介素-2 IL-2/(ng/L) | 30.19±6.25 | 33.34±4.64 | 37.04±4.14 | 31.65±5.45 | 33.04±4.36 | 0.22 |
| 白细胞介素-10 IL-10/(ng/L) | 104.46±21.79 | 117.94±29.22 | 125.80±26.13 | 100.87±21.23 | 100.13±16.19 | 0.25 |
| CD4+ T细胞ATP CD4+ T cell ATP/(ng/mL) | 176.38±33.69 | 187.68±54.67 | 234.88±37.74 | 184.77±28.63 | 177.51±42.86 | 0.10 |

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