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1.
试验采用1050只31周龄尼克-T蛋鸡研究了维生素A(VA,1500IU/kg、5750IU/kg、10000IU/kg)、维生素E(VE,10mg/kg、55mg/kg、100mg/kg)、维生素B2(VB2.2.2mg/kg、7.7mg/kg、13.2mg/kg)对其生产性能、免疫功能和抗氧化机能的影响。结果表明:(1)不同维生素组合对蛋鸡生产性能产生显著影响(P〈0.05),但第3、5、6、7、8组间生产性能差异不显著(P〉0.05);中等水平维生素组合试验蛋鸡血清抗新城疫抗体滴度最高;添加10000IU/kgVA、10mg/kgVE、13.2mg/kgVB2,蛋鸡抗氧化机能最好;(2)主效应分析表明,VA、E、BE对生产性能有显著影响(P〈0.05),VA、B2对血清抗新城疫抗体滴度有显著作用(P〈0.05);(3)交互作用分析表明,以产蛋率、平均蛋重和血清GSH-Px为指标,VA和VE之间存在相互拮抗关系;以平均蛋重和抗新城疫抗体滴度为指标,VA与VB,相互拮抗。  相似文献   

2.
不同剂量的维生素E对产蛋后期蛋种鸡繁殖性能的影响   总被引:1,自引:0,他引:1  
此试验选择50周龄海兰褐父母代种母鸡452只,公鸡18只,随机分为6组。对照组饲喂基础日粮,试验组在基础日粮上分别添加维生素E501U/kg、1001U/kg、175IU/kg、2501U/kg、5251U/kg。结果表明:①对照组产蛋率与试验Ⅰ、Ⅴ组差异不显著(P〉0.05),与其他各组差异显著(P〈0.05);试验Ⅰ组和Ⅴ组料蛋比分别比对照组提高了2.54%、1.0%,试验Ⅱ,Ⅲ、Ⅳ组分别比对照组降低了15.48%、7.97%、19.25%,试验Ⅳ料蛋比最低。试验各组的平均采食量与对照组差异均不显著(P〉0.05);②试验Ⅰ组与其他各组差异显著(P〈0.05),试验其他组间差异不显著(P〉0.05);试验各组种鸡产蛋后期入孵蛋孵化率、受精蛋孵化率、死胎率与对照组相比差异不显著(P〉0.05);⑤种鸡产蛋后期种蛋合格率试验Ⅱ、Ⅴ与其他各组差异显著(P〈0.05);试验Ⅱ组破软蛋率与其他各组相比差异显著(P〈0.05),其他各组间差异不显著(P〉0.05);试验各组畸形蛋率差异不显著(P〉0.05)。  相似文献   

3.
本试验选用480只48周龄的海蓝褐蛋鸡,分成5个试验组和1个对照组,日粮中添加不同水平的维生素E对鸡蛋中(1)-3多不饱和脂肪酸富集的影响进行研究。结果表明:①维生素E的添加对蛋鸡生产性能的影响差异不显著(p〉0.05),但随着维生素E添加量的增加,其料蛋比降低,蛋重、产蛋率都有所增加。②试验进行15d,组I(0.17g/kg)、组Ⅱ(O.12g/kg)维生素E对ω—3多不饱和脂肪酸富集的影响显著(P〈O.05),其他各组差异不显著(P〉0.05):试验进行30d,组Ⅰ(0.17g/kg)、组Ⅱ(0.12g/kg)、组III(0.1Og/kg)与对照组间差异显著(P〈0.05),组Ⅰ(O.17g/kg)与组Ⅱ(0.12glkg)、组Ⅲ(O.10g/kg)之间也存在一定差异(p〈0.05)。维生素E的添加对生产富含ω一3多不饱和脂肪酸的鸡蛋具有一定的作用,其中添加0.17g/kg效果最好。  相似文献   

4.
采用3×3随机交叉试验设计,研究中能中蛋白水平下日粮VA、VD3对肉仔鸡生产性能的影响。1日龄AA肉仔鸡540只随机分为9组,每组3个重复,每重复20只鸡。3个VA添加水平为3000、6000、12000IU/kg;3个VD3添加水平为200、400、800IU/kg;0~3和4~6周龄基础日粮代谢能、粗蛋白水平分别为12.34MJ/kg,21%;12.76MJ/kg,19%。结果表明:①日粮VA水平对体增重、耗料量、料重比、存活率均无显著影响(P〉0.05);②随VD3添加水平的增加,体增重、耗料量、存活率显著增加(P〈0.05);③综合考虑生产性能和经济效益,认为0~3和4~6周龄肉仔鸡日粮VA添加量均以3000IU/kg较为适宜,VD3添加量均以800IU/kg较为适宜。  相似文献   

5.
选用4因素3水平正交试验设计,研究日粮维生素A、D3、E对生长期蛋鸡的影响。结果如下:6周末体重随VE水平的提高而提高,但差异不显著。14周末体重受VE的显著影响。高水平(100mg/kg)组显著大于低水平(10mg/kg)组与中水平(40mg/kg)组(P<0.01),中、低水平之间差异不显著。血清新城疫抗体效价随VA水平的提高而显著提高(P<0.05)。高水平VA和高水平VE组合组显著高于其它组(P<0.05)。胫骨中的钙含量随VA水平的提高显著提高(P<0.01)。VD3对体重、抗体滴度和胫骨Ca含量无显著影响。  相似文献   

6.
本研究在较低的能量蛋白水平下,测定日粮中添加维生素A(VA)对0~6周龄肉仔鸡的影响。将180只1日龄AA肉仔鸡(公母各半)随机分为3组,每组3个重复,每重复20只,第1、2、3组VA添加水平别为(IU/kg):3000、6000和12000。结果表明,VA添加量为6000IU/kg的组体重显著大于添加量为3000IU/kg的组(P〈0.05),和添加量12000IU/kg的体重差异不显著(P〉0.05);VA添加量对0~3周龄料重比有显著影响(P〈0.05),添加量3000IU/kg的组最大,其他2个组差异不显著;VA添加量没有对4~6周龄和0~6周龄料重比产生显著影响(P〉0.05)。综合结果说明0~6周龄肉仔鸡日粮VA6000IU/kg较为适宜。  相似文献   

7.
日粮维生素E水平对种公猪精液品质的影响   总被引:2,自引:2,他引:0  
王怀禹 《猪业科学》2010,27(2):50-52
选择年龄、体重、精液质量较一致、正在使用的健康壮年长白公猪5头,采用5×5拉丁方设计,在不同的阶段分别饲喂含维生素E10 IU/kg(处理1)、25IU/kg(处理2)、40IU/kg(处理3)、55IU/kg(处理4)、70IU/kg(处理5)的饲粮,探索日粮中添加维生素E对长白种公猪精液品质的影响。结果表明:随着日粮中维生素E浓度的增加,处理4采精量最高,处理3精子密度最高,但采精量和精子密度各处理间差异不显著(P〉0.05);处理3、4、5之间精子活率、精子畸形率差异不显著(P〉0.05),但它们显著高于处理1(P〈0.05)。结论:日粮中添加维生素E有助于改善长白种公猪精液品质,长白种公猪饲粮中维生素E的含量以40IU/kg为宜。  相似文献   

8.
旨在探讨日粮中铁和VA对商品代海兰褐蛋鸡血清蛋白代谢的影响。选用26周龄健康育成母鸡432只,随机分成6组,每组6个重复,采用3×2(铁×VA)完全随机试验设计方法,日粮中铁的添加量分别为0、30、60mg/kg,VA的添加量为4000、8000IU/kg。从27周龄开始进行正试期为8周的饲养试验,分别于30周龄和34周龄时测定蛋鸡血清总蛋白含量和血清尿素氮含量。结果表明,日粮铁和VA交互作用对30周龄和34周龄蛋鸡的血清总蛋白浓度影响不显著(P〉0.05);日粮VA的添加水平对30周龄蛋鸡血清总蛋白浓度影响显著(P〈0.05),并且高水平VA添加组(8000IU/kg)显著高于低水平VA添加组(4000IU/kg)。日粮铁和VA交互作用对30周龄和34周龄蛋鸡的血清尿素氮浓度影响不显著(P〉0.05);日粮VA的添加水平对30周龄蛋鸡的血清尿素氮浓度影响极显著(P〈0.01),并且高水平VA添加组(8000IU/kg)显著低于低水平VA添加组(4000IU/kg)。综上提示,日粮中添加VA能够改善蛋鸡的蛋白代谢过程。  相似文献   

9.
本试验旨在研究维生素A、D及其相互作用对肉仔鸡生长及组织维生素A、E浓度的影响。试验采用4×4完全随机试验设计,将384只8日龄健康艾维茵雄性肉仔鸡称重后随机分为16个处理组,每个处理组3个重复,每个重复8只。其中,VA设4个添加水平,分别为1500、3000、15000和45000 IU/kg日粮;VD设4个添加水平,分别为500、1 250、2500和5000 IU/kg日粮,共构成16个处理组。结果表明,日粮VA水平为3000 IU/kg时,血清VA浓度趋于稳定,生长速度最快;日粮VA水平为45000 IU/kg时,肝脏、肾脏VA浓度显著升高,VE浓度显著下降,生长速度有明显下降的趋势;日粮VA水平为15000 IU/kg时,肝脏、肾脏VA浓度显著上升,同时对VE产生明显的拮抗作用,引起血清、肾脏的VE浓度显著下降;日粮VA水平为1 500 IU/kg时,血清、肝脏、肾脏VA浓度及生长速度均呈明显的降低趋势。日粮VD水平在500~5000 IU/kg内增加,对肉仔鸡生长性能无显著影响(P>0.05)。日粮VA为15000 IU/kg时,肉仔鸡VA有过量的可能;日粮VA为45000 IU/kg时,肉仔鸡VA过量;日粮VA为1500 IU/kg时,肉仔鸡VA有临界缺乏的可能。日粮VA与VD在对血清、肝脏VA浓度的影响方面存在一定互作效应,主要表现在高剂量VD对过量VA有一定拮抗作用。  相似文献   

10.
选用4因素3水平正交试验设计,研究日粮维生素A、D3、E对生长期蛋鸡的影响。结果如下:6周末体重随VE水平的提高而提高,但差异不显著。14周末体重受VE的显著影响。高水平(100mg/kg)组显著大于低水平(10mg/kg)组与中水平(40mg/kg)组(P<0.01),中、低水平之间差异不显著。血清新城疫抗体效价随VA水平的提高而显著提高(P<0.05)。高水平VA和高水平VE组合组显著高于其它组(P<0.05)。胫骨中的钙含量随VA水平的提高显著提高(P<0.01)。VD3对体重、抗体滴度和胫骨Ca含量无显著影响。  相似文献   

11.
本文主要综述了维生素A、维生素D和维生素E在动物体内的相互作用及其可能的机制,为科学确定这些维生素在动物日粮中的适宜添加量,提高动物的生产性能提供依据。  相似文献   

12.
Vitamin E   总被引:2,自引:0,他引:2  
Vitamin E activity was first identified as a dietary factor essential for reproduction in the rat. It is now known that this vitamin has a far wider range of functions in the body than its role in fertility. It interacts with selenium-containing glutathione peroxidase to prevent the oxidative breakdown of tissue membranes associated with the hydroperoxides of polyunsaturated fatty acids. Relationships with other factors such as stress and vitamin C, have been proposed. The symptoms of deficiency of vitamin E vary according to species. With so many variables it is difficult to estimate the optimum allowances of the vitamin for the many types of livestock diets. These problems are discussed and the calculation of allowances of vitamin E in rations for both monogastric and ruminant animals is explained.  相似文献   

13.
Abstract

The influence of vitamin E supplementation on blood serum vitamin E concentration as well as the seasonal variation of serum vitamin concentration was investigated. Forty horses were divided into a control and three vitamin E supplementation (experimental) groups. The levels of the vitamin E supplementation in the three experimental groups were 1, 3 or 5 mg/kg body weight (bwt) per day. The vitamin was dosed orally. The supplementation was started either at the beginning or in the middle of the indoor (winter) feeding period. There was seasonal variation in the serum vitamin E content; the serum vitamin concentration increased during the grazing and decreased during the indoor feeding period. The basal feeding and a daily supplement of 1 mg/kg bwt were not adequate to maintain or increase the serum vitamin E concentration during the indoor feeding period in an exercising horse. The minimum daily intake of vitamin E would seem to be greater than 1.5 mg/kg bwt. It is suggested that a daily supplement of 3 to 5 mg/kg bwt may be required by horses in training to increase the serum vitamin E levels. This amounts to 1500–2500 mg/day for a horse weighing 500 kg. Supplementation should be started at the beginning of the indoor feeding period.  相似文献   

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17.
Deficiencies of vitamins A, D, K, E and thiamin can cause severe limitations in beef production. In particular, vitamin A and E can be common causes of lost profit, secondary to limitations of reproductive and growth potential. Prolonged dry periods will reduce available A and E in pasture forage, as can ensiling and prolonged storage of harvested feedstuffs. Polioencephalomalacia is a thiamin responsive disorder, associated with high concentrate feeding and lush pastures. Antimetabolites, such as amprolium, will cause thiamine deficiency when fed in excess. Recent information has shown improved performance with supplemental beta carotene and niacin. The positive responses in reproductive performance, noted with cattle fed supplemental beta carotene, was independent of vitamin A. Supplementation of vitamins above National Research Council recommendations can be justified. However, proper evaluation of feed and animal status, and documentation of a response to supplementation is necessary before diagnosing deficiencies of specific nutrients.  相似文献   

18.
以216只VC-Ⅱ生长獭兔为研究对象,研究了日粮中锌与维生素A的不同水平对獭兔体内维生素A代谢的影响。结果表明:日粮锌水平可显著影响血清维生素A含量,而不影响肝脏维生素A含量;日粮维生素A水平可显著影响血清及肝脏维生素A含量。证明日粮锌与维生素A水平在血清维生素A浓度上存在互作效应。  相似文献   

19.
实际生产中人们对维生素A缺乏问题很关注.近期报道维生素A和维生素E之间有拮抗作用,日粮中维生素E量对动物机体脏器中维生素A含量有很大影响.为了验证此说法,笔者进行了喂服维生素E缺乏的饲料来测定动物肝脏中维生素A含量的试验,具体过程报道如下:  相似文献   

20.
AIM: To determine the effect of increasing the Vitamin B12 status of the ewe on the Vitamin B12 supply to the suckling lamb. METHODS: The Vitamin B12 status of the ewe was increased during gestation and lactation by three injections of a long-acting preparation of Vitamin B12 microencapsulated in an organic acid polymer. The Vitamin B12 status of the ewes and suckling lambs was assessed from changes in serum and liver Vitamin B12 concentrations. RESULTS: Compared to untreated animals, serum and liver Vitamin B12 concentrations of the treated ewes were increased at least 70% during gestation. Foetal liver Vitamin B12 concentrations were increased 270%. Over the lactation, ewe serum and milk Vitamin B12 concentrations were increased at least 200% and 44%, respectively. The liver Vitamin B12 stores of the newborn lambs from Vitamin B12-treated ewes were depleted within 58 days. There were no significant differences in the serum Vitamin B12 concentrations of suckling lambs from Vitamin B12-treated and untreated ewes. CONCLUSION: Ewes with a high Vitamin B12 status will ensure an adequate supply of Vitamin B12 to their lambs for at least the first 30 days of life. CLINICAL SIGNIFICANCE: In flocks grazing Co-deficient pastures, treating ewes with a long-acting Vitamin B12 supplement at mating will prevent Vitamin B12 (Co) deficiency in ewes, as well as their lambs, until they can be treated at tailing at 4-6 weeks of age.  相似文献   

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