| 日粮中添加不同水平紫苏籽对湖羊生长性能、瘤胃发酵及养分表观消化率的影响 |
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| 引用本文： | 邓凯平,王锋,马铁伟,王震,于晓青,丁立人,陶晓强,樊懿萱. 日粮中添加不同水平紫苏籽对湖羊生长性能、瘤胃发酵及养分表观消化率的影响[J]. 草业学报, 2017, 26(5): 205-212. DOI: 10.11686/cyxb2016254 |
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| 作者姓名： | 邓凯平 王锋 马铁伟 王震 于晓青 丁立人 陶晓强 樊懿萱 |
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| 作者单位： | 1.南京农业大学江苏省肉羊产业工程技术研究中心,江苏 南京 210095；2.江苏省泰州市海伦羊业有限公司,江苏 泰州 225500 |
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| 基金项目： | 公益性行业(农业)科研专项;南方地区肉羊育肥与高品质肉生产技术研究，国家现代肉羊产业技术体系项目 |
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| 摘 要： | 本试验旨在研究日粮中添加不同水平紫苏籽(Perilla frutescens seed,PFS)对湖羊生长性能、血清生化指标、养分表观消化率及瘤胃发酵的影响。选取2月龄、平均初始体重为(23.02±1.36) kg的湖羊公羔60只,依据日粮中PFS含量随机分成为:对照组(Control)、5%紫苏籽组(5%PFS)、10%紫苏籽组(10%PFS)和15%紫苏籽组(15%PFS)。预试期14 d,正试期70 d。饲喂试验结束前21 d,从各组随机挑选4只羊进行7 d的消化代谢试验。试验结束后称重,计算平均日增重(ADG),并采集瘤胃液和血液分别用气相色谱法、比色法、全自动生化分析仪和酶联免疫分析法测定瘤胃液挥发性脂肪酸(VFA)、氨态氮(NH3-N)、血清中总蛋白(TP)、尿素氮(UN)、葡萄糖(Glu)和血清中生长激素(GH)、胰岛素样生长因子-1(IGF-1)等。结果表明,日粮中PFS水平对湖羊生长性能(干物质采食量、平均日增重和料重比)、血清生化指标(TP、UN、Glu、GH和IGF-1)、瘤胃pH和瘤胃液乙酸、丙酸及总挥发性脂肪酸(TVFA)等含量的影响不显著(P>0.05),但随着PFS添加水平的升高,乙酸、丁酸和TVFA的含量呈降低趋势,丙酸呈上升趋势;与对照组相比,15% PFS组中NH3-N和乙酸/丙酸极显著降低(P<0.01);添加PFS不影响日粮中粗脂肪(EE)和酸性洗涤纤维(ADF)的表观消化率(P>0.05),但干物质(DM)、有机物(OM)和中性洗涤纤维(NDF)的表观消化率随着PFS添加水平升高而下降,且15% PFS 组的DM和OM的表观消化率均极显著低于对照组(P<0.01);与对照组相比,10% PFS组的粗蛋白(CP)表观消化率极显著提高(P<0.01),而15% PFS组的极显著降低(P<0.01)。综上所述,湖羊日粮中添加PFS水平为10%时,饲喂效果较好。
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| 关 键 词： | 湖羊 紫苏籽 生长性能 瘤胃发酵 养分表观消化率 |
| 收稿时间： | 2016-06-22 |
| 修稿时间： | 2016-08-05 |
Effect of dietary Perilla frutescens seed intake on rumen fermentation characteris-tics,apparent nutrient digestibility,and growth performance of Hu sheep |
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| DENG Kai-Ping,WANG Feng,MA Tie-Wei,WANG Zhen,YU Xiao-Qing,DING Li-Ren,TAO Xiao-Qiang,FAN Yi-Xuan. Effect of dietary Perilla frutescens seed intake on rumen fermentation characteris-tics,apparent nutrient digestibility,and growth performance of Hu sheep[J]. Acta Prataculturae Sinica, 2017, 26(5): 205-212. DOI: 10.11686/cyxb2016254 |
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| Authors: | DENG Kai-Ping WANG Feng MA Tie-Wei WANG Zhen YU Xiao-Qing DING Li-Ren TAO Xiao-Qiang FAN Yi-Xuan |
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| Affiliation: | 1.Jiangsu Engineering Technology Research Center of Meat Sheep & Goat Industry, Nanjing Agricultural University, Nanjing 210095, China;2.Jiangsu Taizhou Helen Sheep Industry Co. LTD, Taizhou 225500, China |
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| Abstract: | The objective of this study was to evaluate the effect of the amount of Perillafrutescensseed (PFS) in the diet on the serum biochemical parameters,rumen fermentation characteristics,apparent nutrient digesti-bility,and growth performance of Hu sheep.Sixty male Hu lambs aged 2 months and weighing on average (23.02±1.36)kg were randomly divided into four groups and fed on diets containing varying proportions of PFS:0% (control),5% (5%PFS),10% (10%PFS)and 15% (15%PFS)for 70 days.At 21 days before the end of the feeding experiment,four lambs were randomly selected from each experimental group for a 7-day di-gestion and metabolism experiment.At the end of the feeding period,lambs were weighed to calculate average daily gain (ADG).Blood and rumen fluid samples were collected for analysis.Volatile fatty acids (VFA),am-monia nitrogen (NH3-N),total protein (TP),urea nitrogen (UN),glucose (Glu),growth hormone (GH), and insulin-like growth factors 1 (IGF-1 )were quantified in the samples using gas chromatography,colorimet-ric,automatic biochemical analyzer,and ELISA methods.The results showed that the amount of PFS did not significantly affect growth performance (dry matter intake,ADG,and feed/gain ratio),blood biochemical in-dices (TP,UN,Glu,GH and IGF-1),rumen pH,or the concentrations of acetic acid,propionic acid,and to-tal VFA (P>0.05).With increasing dietary PFS,the concentrations of acetic acid,butyric acid,and total VFA tended to decrease,whereas the concentration of propionic acid tended to increase.Compared with the control group,the 15%PFS group showed significantly decreased NH3-N content and acetate:propionate ratio (P<0.01 )in the rumen fluid.The amount of PFS did not affect the apparent digestibility of ether extract (EE)and neutral detergent fiber (NDF)(P>0.05).However,the apparent digestibility of dry matter (DM), organic matter (OM),and NDF decreased with increasing amounts of PFS in the diet.The apparent digestibili-ty of DM and OM was lower in the 15%PFS group than in the other groups (P<0.05).Compared with the control group,the 10%PFS group showed significantly increased apparent digestibility of crude protein (CP) (P<0.01),while the 15%PFS group showed a significant decrease in this parameter (P<0.01).In conclu-sion,10% PFS in the diet is the appropriate level of supplementation for Hu sheep. |
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| Keywords: | Hu sheep Perilla frutescensseed growth performance rumen fermentation nutrient apparent di-gestibility |
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