饲粮中添加白藜芦醇对“杜×长×大”猪空肠抗氧化能力及紧密连接蛋白表达的影响     

罗云彦  高小童  韦崇万  胡旭旭  蒋钦杨  黄艳娜 《饲料研究》2022,45(1):25-29

试验旨在研究饲粮中添加白藜芦醇(resveratrol,RES)对"杜×长×大"猪空肠抗氧化酶活性及抗氧化基因指标和紧密连接蛋白相关基因表达水平的影响。试验选用12头体重约为65 kg的育肥猪分为2组,每组6头。对照组育肥猪饲喂基础饲粮,试验组育肥猪饲喂在基础饲粮中添加400 mg/kg的RES的饲粮,试验期41 d。结果表明,与对照组相比,饲粮中添加400 mg/kg的RES显著提高了育肥猪空肠过氧化氢酶(CAT)、总超氧化物歧化酶(T-SOD)、谷胱甘肽过氧化物酶(GSH-Px)的活性及总抗氧化能力(T-AOC)(P<0.05),显著降低丙二醛(MDA)的含量(P<0.05);显著提高育肥猪空肠抗氧化基因铜/锌超氧化物歧化酶(Cu/Zn-SOD)、锰超氧化物歧化酶(Mn-SOD)、谷胱甘肽过氧化物酶-1 (GPx-1)和谷胱甘肽过氧化物酶-4 (GPx-4)活性(P<0.05);显著提高育肥猪空肠抗氧化酶活相关基因CAT、T-SOD和GSH-Px的表达水平(P<0.05),显著降低MDA的表达水平(P<0.05);显著提高育肥猪空肠紧密连接蛋白咬合蛋白(Occludin)、闭合蛋白-1 (Claudin-1)和链接黏附分子A (JAM-A)的表达水平(P<0.05)。研究表明,饲粮添加400 mg/kg的RES能够显著提高育肥猪空肠抗氧化能力及紧密连接蛋白的表达,改善动物肠道健康。  相似文献   

肉牛场生命周期估计及环境影响评价   总被引：1，自引：0，他引：1  

程琼仪  张言  陈昭辉  刘继军 《家畜生态学报》2015,36(1):63-69

试验采用生命周期估计(life cycle assessment,LCA)方法对江西高安某存栏1 800头的肉牛育肥场在整个育肥期间(7个月)的污染物排放量,以及污染物在全球变暖、环境酸化、富营养化、光化学臭氧合成方面对环境的影响进行了评估。系统边界包括化肥生产、农作物种植、饲料运输、肉牛生产和粪便处理。结果表明:温室气体排放量为(以CO2当量计)为11 908t,环境酸化气体排放量(以SO2当量计)为84.6t,富营养化气体排放量为(以PO43-当量计)为14.4t,光化学臭氧合成问题气体排放量为(以C2H4当量计)为1.68t。其中饲料运输主要影响全球变暖(占总排放量的49.8%)和光化学臭氧合成问题(占总排放量的54.1%),而粪便处理主要影响环境酸化(占总排放量的70.1%)和富营养化(占总排放量的76.4%),肉牛生产对环境的影响主要是全球变暖(占总排放量的18.1%)和光化学臭氧合成问题(占总排放量的30.9%)。因此,可考虑通过降低运输距离,改善饲料配方、粪便处理方式等降低污染物排放量。  相似文献   

青贮甜高粱与玉米秸秆饲喂肉牛效果研究   总被引：1，自引：1，他引：0  

张元来  白晶晶 《中国牛业科学》2014,(5):35-36

[目的]饲喂青贮甜高粱与玉米秸秆对肉牛增重的效果研究,选择11月龄、体重280Kg 的西门塔尔公牛20头进行饲喂效果对比试验。[结果]显示：对照组、试验组平均每头日增重为0.98 kg、1.45 kg。试验组比对照组平均日多增重0.47 kg,提高47.96%;净收益每头每天比对照组多9.78元。[结论]表明：青贮甜高粱饲喂育肥肉牛增重效果明显,经济效益较好。  相似文献   

断乳牦牛犊的育肥试验及其生长发育情况的研究     

常明华 《中国牛业科学》2014,(2):27-28,31

[目的]为了探索在育肥条件下高寒牧区牦牛犊的生长发育情况,促使牦牛犊商品化,实施牦牛高效饲养技术与适时出栏技术相结合,改变本地区传统饲养模式,促进牦牛业向效益型畜牧业转变,为今后普及牦牛犊舍饲育肥,提供可靠数据和标准化饲养管理技术。[方法]于2012年12月~2013年5月,在贵南县开展了断乳牦牛犊舍饲育肥及生长发育效果观测试验。[结果]显示育肥牦牛犊的体高、体斜长、胸围、管围、体重分别达到了86.19cm、94.07cm、113.50cm、12.10cm、91.63kg与对照组相比差异均显著(P0.05)。[结论]对断乳牦牛犊进行舍饲育肥是牧区加快牦牛出栏、调整牛群结构、增加牧民收入的好方法。  相似文献   

饲用微生物添加剂育肥杂种肉羊效果的试验     

贠忠林  袁涛  李春佑 《畜牧兽医杂志》2014,(1):8-10

为比较青贮玉米秸秆添加与不添加饲用微生物添加剂的效果,进行了饲用微生物添加剂青贮玉米秸秆饲喂陶赛特×小尾寒羊F1代杂种肉羊育肥效果的试验。结果表明,用饲用微生物添加剂制作青贮玉米秸秆饲喂3～6月龄杂种肉羊,全期只均日增重达230．56g,较青贮玉米秸秆对照组提高7．44％．试验组只均盈利253．5元．盈利提高29．60％,经济效益显著。饲用微生物添加剂适宜在杂种肉羊生产上推广应用。  相似文献   

牦牛犊牛全哺乳及育肥试验     

才让卓玛 《畜牧与饲料科学》2014,35(9):84-85

根据月龄相近的原则选择60头牦牛犊牛进行全哺乳及育肥试验,研究全哺乳对牦牛犊牛生产发育的影响。结果表明,全哺乳不但能提高牦牛犊牛的体重,而且能提高养殖者的经济效益。  相似文献   

盘江黄牛及其杂交牛育肥中干物质、粗蛋白、综合净能需要研究     

何光中  王华  艾方林  罗启华  艾显琼 《中国牛业科学》1999,(5)

将３６ 头盘江黄牛及其杂交牛分成１２ 组，采用不同的日粮，进行两期育肥试验，得到不同的增重水平和实际营养物质摄入量。用各组实际采食的干物质（ ＤＭ） 、粗蛋白（ＣＰ） 、综合净能（ＮＥｍｆ） 与我国试行的《肉牛饲养标准》进行比较。结果表明，除干物质与标准相差较多（ － ６ ．３ ％ ） 外，粗蛋白和综合净能与标准相当接近（ 仅相差－ １ ．５ ％ 和２ ．８ ％ ） ，说明盘江黄牛及其杂交牛在育肥中的营养需要基本与标准相符，在配制日粮时，可以参考我国的《肉牛饲养标准》。  相似文献   

Effect of Different Dietary Nutrition Levels on Fattening Effect of Holstein Bulls     

LI Xiao-meng  LI Qiu-feng  CAO Yu-feng  YU Chun-qi  LI Jian-guo  GAO Yan-xia 《中国畜牧兽医》2015,42(7):1705-1710

This experiment was conducted to study the effect of different dietary nutrition levels on fattening effect of Holstein bulls.48 4-month-old Holstein bulls with an average body weight of 128 kg were allocated into two groups,group Ⅰ was fed a low nutrition level diet,group Ⅱ was fed a high nutrition level diet.Each group had 24 Holstein bulls.The pre-test period lasted for 7 days and the trial period lasted for 245 days.The results showed that compared with group Ⅰ,the ADG in group Ⅱ was significantly increased by 6.36% (P<0.01),while the F/G in group Ⅱ was decreased by 6.55%.With the increasing of dietary nutrition levels,the apparent digestibility of CP,EE,NDF,ADF,Ca and P were rising,but there was no significant differences between two groups (P>0.05).Compared with group Ⅰ,the serum GLU,AST,ALT and GH contents in group Ⅱ were increased by 12.52%,12.85%,9.68% and 13.24% (P<0.05),respectively,while the serum BUN content in group Ⅱ was decreased by 10.98% (P<0.05).Compared with group Ⅰ,the feeding profits of group Ⅱ increased by 1.37 yuan/(head·day),the total economic benefit of group Ⅱ increased by 335.65 yuan/head.In conclusion,the improvement of dietary nutrition levels could improve the fattening performance and the economic benefit of Holstein bulls.  相似文献   

饲料突然变换对配套系生猪肥育性能影响的研究     

冯选明 《畜牧与饲料科学》2011,32(1):36-38

选择配套系生猪为研究对象,研究饲料突然变换对配套系生猪育肥性能的影响。虽然配套系生猪的生长速度快、饲料利用率高、瘦肉率高、饲养时间短,但其适应能力、耐粗饲能力、抗应激能力却很差,因此,必须在科学的饲养管理条件下才能取得良好的饲养效果。否则易发生"PSS"(应激综合征)、"PSE"(肉色苍白/蛋白质松软无弹性、切面渗水的劣质肉),给养殖户造成重大损失。  相似文献   

Effect of Different Crossbred Combinations on Fatting Performance in Beef Cattle     

WANG Jun  LIU Xiao-fei  JIA Ya-xiong  GUO Jiang-peng  LU Yong-qiang  QI Zhi-guo  CHANG Liang  YANG Jian-jun  XU Meng 《中国畜牧兽医》2017,44(7):2071-2078

This study was aimed to determine the effects of different crossbred combinations on fatting performance in beef cattle. Using single factor randomized block design, 30 bulls (health, similar weight and age) were chosen, Simmental cattle×Kerqin beef cattle (group A), Charolais cattle×Kerqin crossbred beef cattle (group B) and Kerqin beef cattle (group C) were divided into three groups with 10 bulls per group. After 95 d, the body weight, slaughter performance, meat quality and the economic benefits of fattening were measured. The results showed that there were no significant influence on dry matter intake among trials (P>0.05). The F/G, ethanolic extract (EE) of muscle in crossbred groups (groups A and B) were significant lower than group C (P<0.05). The weight of carcass, weight of meat, rate of carcass, and the weight of shank, plate, chine and rump in crossbred groups were significant higher than group C (P<0.05). There were no significant difference in content of amino acids among groups (P>0.05),and it had difference in the content of palmitoleic acid (PAA),stearic acid(SA) and linoleic acid (LA). In this trial, it had better fattening performance and the economic benefits in crossbred cattle groups than Kerqin beef group cattle, but the ethanolic extract and unsaturated fatty acids of muscle in Kerqin beef cattle were higher than the crossbred groups, and it had better fattening performance by crossbred.  相似文献