1 材料与方法
1.1 试验设计和饲养管理
表1 基础饲粮组成及营养水平(风干基础)Table 1 Composition and nutrient levels of the basal diet (air-dry basis) % |
| 原料Ingredients | 含量Content | 营养水平Nutrient levels2) | 含量Content | |
|---|---|---|---|---|
| 玉米Corn | 66.70 | 代谢能ME/(MJ/kg) | 12.59 | |
| 豆粕Soybean meal | 27.35 | 粗蛋白质CP | 17.68 | |
| 豆油Soybean oil | 2.41 | 钙Ca | 0.75 | |
| 石粉Limestone | 1.21 | 总磷TP | 0.56 | |
| 食盐NaCl | 0.21 | 赖氨酸Lys | 0.92 | |
| 磷酸氢钙CaHPO4 | 0.92 | 蛋氨酸Met | 0.42 | |
| L-赖氨酸盐酸盐L-Lys·HCl | 0.11 | 非植酸磷NPP | 0.34 | |
| DL-蛋氨酸DL-Met | 0.09 | |||
| 预混料Premix1) | 1.00 | |||
| 合计Total | 100.00 |
1)预混料为每千克饲粮提供 The premix provided the following per kg of the diet:VA 9 000 IU,VB1 5 mg,VB2 10 mg,VB6 12 mg,VB12 30 μg,VD3 2 500 IU,VE 25 mg,VK3 3 mg,生物素 biotin 0.10 mg,叶酸 folic acid 3 mg,D-泛酸 D-pantothenic acid 20 mg,烟酸 nicotinic acid 30 mg,Cu 20 mg,Fe 320 mg,Mn 100 mg,Zn 200 mg,I 0.60 mg,Se 0.30 mg。 2)代谢能、非植酸磷为计算值,其他为测定值。ME and NPP were calculated values, while the others were measured values. |
1.2 样品采集
1.3 指标测定
1.3.1 饲粮营养成分
1.3.2 生长性能
1.3.3 睾丸组织抗氧化指标
1.3.4 睾丸组织结构
1.3.4.1 组织切片制作
1.3.4.2 苏木素-伊红(hematoxylin-eosin,HE)染色
1.3.4.3 免疫组织化学(immunohistochemistry,IHC)
1.3.5 实时荧光定量PCR(quantitative real-time PCR,qRT-PCR)
表2 qRT-PCR相关基因引物序列Table 2 Related gene primer sequences for qRT-PCR |
| 基因名称 Gene names | 引物序列 Primer sequences (5'—3') | 产物长度 Product length/bp | 登录号 Accession number | ||||
|---|---|---|---|---|---|---|---|
| 核因子红细胞2相关因子2 Nrf2 | F:GATGTCACCCTGCCCTTAGA R:TCGTTCCATTTGTTCCTTCTG | 108 | NM_205117.1 | ||||
| 半氧合酶-1 HO-1 | F:TCATTGGCAAGAAGCATCCAGAGC R:GAACTTGGTGGCGTTGGAGACTC | 176 | HM237181.1 | ||||
| 谷胱甘肽过氧化物酶1 Gpx1 | F:ACGGCGCATCTTCCAAAG R:TGTTCCCCCAACCATTTCTC | 73 | NM_001277853.2 | ||||
| B细胞淋巴瘤-2相关X蛋白 Bax | F:GTGATGGCATGGGACATAGCTC R:TGGCGTAGACCTTGCGGATAA | 90 | XM_015290060.3 | ||||
| B-细胞淋巴瘤-2 Bcl-2 | F:AGTAGAGTCACCCAGTTTATCG R:CTTTAGCCAGGAAGTTGTTT | 113 | NM_205339.2 | ||||
| 半胱氨酸天冬氨酸蛋白酶3 Caspase3 | F:AAGGCTCCTGGTTTATTC R:CTGCCACTCTGCGATTTA | 102 | NM_204725.1 | ||||
| 核因子κB NF-κB | F:TCAACGCAGGACCTAAAGACAT R:GCAGATAGCCAAGTTCAGGATG | 162 | NM_205134.1 | ||||
| 肿瘤抑制基因p53 p53 | F:GAGATGCTGAAGGAGATCAATGAG R:GTGGTCAGTCCGAGCCTTTT | 145 | NM_205264 | ||||
| 类固醇激素合成急性调节蛋白 StAR | F:TCAGCCGGCGGATTTAAGG R:TGGTGGCTGCTACAAACACT | 64 | NM_204686.2 | ||||
| 3β-羟基类固醇脱氢酶1 Hsd3b1 | F:AAGGCAGATGGCCAGATGT R:TGATGCGTCTGGCTTTCTGT | 250 | FJ_607242.1 | ||||
| 细胞色素P450家族成员11A1 Cyp11a1 | F:TTTGCCTTGGAGTCTGTG R:GCCATGTCTTGGTGTTGA | 178 | NM_001001756.1 | ||||
| β-肌动蛋白 β-actin | F:CAGCCATCTTTCTTGGGTAT R:CTGTGATCTCCTTCTGCATCC | 169 | NM_205518.1 |
1.3.6 蛋白免疫印迹(Western blot)
1.4 数据统计分析
2 结果与分析
2.1 饲粮中添加GSPs对DQ诱导的公鸡生长性能的影响
表3 饲粮中添加GSPs对DQ诱导的公鸡生长性能的影响Table 3 Effects of dietary GSPs on growth performance of roosters induced by DQ |
| 项目 Items | 组别Groups | SEM | P值 P-value | ||
|---|---|---|---|---|---|
| CON | DQ | GSPs+DQ | |||
| 初始体重IBW/g | 235.28 | 245.28 | 244.80 | 2.89 | 0.19 |
| 终末体重FBW/g | 685.92 | 704.65 | 704.04 | 18.33 | 0.71 |
| 平均日增重ADG/(g/d) | 15.02 | 15.31 | 15.30 | 0.61 | 0.86 |
| 平均日采食量ADFI/(g/d) | 56.79 | 56.72 | 56.70 | 0.05 | 0.50 |
| 料重比F/G | 3.78 | 3.70 | 3.71 | 0.19 | 0.41 |
同行数据肩标无字母表示差异不显著(P>0.05)。 | |
In the same row, values with no letter superscripts mean no significant difference (P>0.05). |
2.2 饲粮中添加GSPs对DQ诱导的公鸡睾丸组织氧化应激指标的影响
图1 饲粮中添加GSPs对DQ诱导的公鸡睾丸组织氧化应激指标的影响数据柱标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)。下图同。 Fig.1 Effects of dietary GSPs on oxidative stress indices in testis tissue of roosters induced by DQ Value columns with the same small letter mean no significant difference (P>0.05), while with different small letters mean significant difference (P<0.05). The same as below. |
2.3 饲粮中添加GSPs对DQ诱导的公鸡睾丸组织结构损伤的影响
图2 饲粮中添加GSPs对DQ诱导的公鸡睾丸组织结构损伤的影响A1~A3:CON组睾丸组织的HE染色;B1~B3:DQ组睾丸组织的HE染色;C1~C3:GSPs+DQ组睾丸组织的HE染色。A1 to A3: HE staining of testis tissue in CON group; B1 to B3: HE staining of testis tissue in DQ group; C1 to C3: HE staining of testis tissue in GSPs+DQ group. SM:被膜;P:实质;L:睾丸间质细胞;Sc:生精细胞;ST:生精小管。图3同。SM: serous membrane; P: parenchyma; L: leydig cells; Sc: spermatogenic cell; ST: seminiferous tubule. The same as Fig.3. Fig.2 Effects of dietary GSPs on testis tissue structural damage of roosters induced by DQ |
2.4 饲粮中添加GSPs对DQ诱导的公鸡睾丸组织生精细胞增殖的影响
图3 饲粮中添加GSPs对DQ诱导的公鸡睾丸组织生精细胞增殖的影响A:CON组睾丸组织的PCNA染色;B:DQ组睾丸组织的PCNA染色;C:GSPs+DQ组睾丸组织的PCNA染色;D:阴性对照,CON组睾丸组织;E:各组睾丸组织PCNA阳性生精细胞数目统计。PCNA:增殖细胞核抗原。 Fig.3 Effects of dietary GSPs on spermatogenic cells proliferation in testis tissue of roosters induced by DQ A: PCNA staining of testis tissue in CON group; B: PCNA staining of testis tissue in DQ group; C: PCNA staining of testis tissue in GSPs+DQ group; D: negative control, the testis tissue in control group; E: count of PCNA-positive spermatogenic cells in testis tissue of each group. PCNA: proliferating cell nuclear antigen. |
2.5 饲粮中添加GSPs对DQ诱导的公鸡睾丸组织细胞凋亡的影响
图4 饲粮中添加GSPs对DQ诱导的公鸡睾丸组织细胞凋亡的影响Bax:B细胞淋巴瘤-2相关X蛋白 B cell lymphoma-2 associated X protein;Bcl-2:B细胞淋巴瘤-2 B cell lymphoma-2;Caspase3:半胱氨酸天冬氨酸蛋白酶3 cysteinyl aspartate specific proteinase 3;NF-κB:核因子-κB nuclear factor-kappa B;β-actin:β-肌动蛋白。 Fig.4 Effects of dietary GSPs on testis tissue apoptosis of roosters induced by DQ |
2.6 饲粮中添加GSPs对DQ诱导的公鸡睾丸组织中睾酮合成相关调控分子表达的影响
图5 饲粮中添加GSPs对DQ诱导的公鸡睾丸组织中睾酮合成相关调控分子表达的影响StAR:类固醇激素合成急性调节蛋白 steroidogenic acute regulatory protein;Hsd3b1:3β-羟基类固醇脱氢酶1 3β-hydroxysteroid dehydrogenase 1;Cyp11a1:细胞色素P450家族成员11A1 cytochrome P450 family 11 subfamily A member 1;β-actin:β-肌动蛋白。 Fig.5 Effects of GSPs on expression of testosterone synthesis-related molecules in testis tissue of roosters induced by DQ |

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