产蛋鸡日粮上下午营养分档饲喂效果研究

根据产蛋母鸡的生殖生理和消化生理特点，白天以形成蛋黄和蛋清为主，夜间以形成蛋壳为主，饲料通过消化道的时间为４小时左右，改变传统的一日几餐不变的饲喂方式，采用上下午营养分档配料，上午以高蛋白高能量低钙日粮促进排卵及卵黄和卵清的快速形成，下午以低蛋白低能量高钙日粮促进蛋壳的形成，按需供给母鸡的营养，加速蛋的形成过程，提高养鸡效益。试验结果表明，在产蛋高峰期试验组比对照组可提高产蛋率３．０６个百分点，差异显著（Ｐ＜０．０５）；增加蛋重１．５０克，差异显著（Ｐ＜０．０５）；每千克蛋饲料成本降低１６．０２％，差异显著（Ｐ＜０．０５）。在产蛋后期，试验组比对照组可提高产蛋率２．６８个百分点，差异显著（Ｐ＜０．０５）；增加蛋重１．０７克，差异不显著（Ｐ＞０．０５）；每千克蛋饲料成本降低６．７４％，差异显著（Ｐ＜０．０５）。故产蛋鸡日粮采用上下午营养分档饲喂比传统的饲喂方式可显著提高经济效益，尤其是产蛋高峰期     

蜂花粉对蛋种鸡生产性能及蛋品质影响的研究

选择海兰蛋种鸡２４０羽，随机分为四组，对照组饲喂基础日粮，试Ⅰ、Ⅱ、Ⅲ组分别饲喂在基础日粮中添加 ０． ５％、 １． ０％、 １． ５％蜂花粉的日粮。试验期２８天。试验结果表明：种鸡产蛋率分别提高了 ３. １６％、 ４．９６％（ｐ ＜０. ０５）、３． ９９％，（ｐ ＜０． ０５），料蛋比分别下降了 ２.７２％、 ６．３６％（ｐ＜０．０５）和３．１８％，死淘率各下降了１．６７％，种蛋合格率分别提高了 １． ３７％， ３． ０３％（ｐ＜０． ０５）和 １． ６４％，种蛋受精率试验组均高于对照组，但差异不显著，孵化率分别提高了２.２４％，３.７１％和６．４１％（p＜０．０５）。蛋品质测定结果表明，试验Ⅱ组较对照组的蛋形指数与蛋黄指数分别提高了３.９７％（ｐ＜０．０５）和７．１０％（ｐ＜ ０．０５），蛋比重、蛋黄相对重、蛋壳相对重、蛋壳厚度和哈夫单位，试验组与对照组无显著差异。     

蛋鸡饲喂稀土饲料添加剂的效果

１９９５年１１月到１９９６年７月在平安县种鸡场对罗曼商品代蛋鸡进行２３４ｄ饲喂稀土试验。试验设４个组，每组２９５只。试验１，２，３组鸡日粮中分别添加０．０１％、０．０１５％和０．０２％的ＲＣＴ－３有机稀土饲料添加剂，对照组鸡不喂稀土。结果：试验１，２，３组母鸡日产蛋总重比对照组鸡分别提高１３．９１％（Ｐ＜０．０１），８．３６％（Ｐ＜０．０５）和０．９７％（Ｐ＞０．０５）；产蛋率分别提高９．５９，５．７２和０．８３百分点；只均纯收入增加８．５２元，５．０１元和０．２１元。     

喂大快对产蛋鸡后期生产性能的影响

选择４６周龄海兰褐蛋鸡１２００只，随机分为３组，每组４００只。Ａ组为对照组，Ｂ组为试验Ⅰ组，基础日粮加０．２％喂大快，Ｃ组为试验Ⅱ组，基础日粮加４．３％玉米，加０．５％的芝麻粕，减去０．５％动物蛋白及１．５％的油和３％沸石粉，再加０．２％的喂大快，营养水平与对照组接近。饲喂４周，结果表明：试验Ⅰ组比对照组平均蛋重提高７．８９％，料蛋比下降６．８５％，试验Ⅱ组比对照组平均蛋重提高７．０３％，料蛋比下     

维生素A对肉用仔鸡锌吸收利用的影响

以玉米—豆饼型基础日粮不添加维生素Ａ（ＶＡ，５５００单位／千克）或锌（锌，前期５５、后期４４毫克／千克）或两者均添加（对照）饲喂１—６周龄ＡｒｂｏｒＡｃｒｅｓ（ＡＡ）肉用仔鸡。结果显示，日粮ＶＡ或锌不足均明显降低了３周龄（Ｐ＜０．０１）和６周龄（ＶＡ不足Ｐ＜０．０５，锌不足Ｐ＜０．０１）血清锌浓度；显著减少了３周龄胫骨锌（Ｐ＜０．０１）和胫骨灰锌（ＶＡ不足Ｐ＜０．０５，锌不足Ｐ＜０．０１）含量；ＶＡ不足组胫骨和胫骨灰中锌含量都显著高于锌不足组（Ｐ＜０．０１），但两组间３周龄和６周龄血清锌均无显著差异。不同处理对６周龄胫骨锌沉积未见有明显影响（Ｐ＞０．０５）。     

不同限饲水平对产蛋期肉种鸭生产性能的影响

本研究旨在探讨不同限饲水平对产蛋期肉种鸭生产性能和孵化指标的影响。试验选取 ４０周龄父母代 ＳＭ３樱桃谷种鸭 ３２００只（母鸭 ２６００只,公鸭 ６００只）,随机分成 ４组,每组 ５个重复,每个重复 １６０只鸭（母鸭 １３０只,公鸭 ３０只）。以玉米 －豆粕 －小麦型配合饲料（代谢能 １１．５０ＭＪ／ｋｇ,粗蛋白质 １８．００％）为基础饲粮。Ｔ１组日饲喂料量最大,为每只鸭 ２２５ｇ,其他组依次降低 １５ｇ,分别为 ２１０（Ｔ２组）、１９５（Ｔ３组）和 １８０ｇ（Ｔ４组）,试验期 ３５ｄ。结果表明：１）当日饲喂料量由２２５ｇ下降到２１０ｇ时,公、母鸭的体增重均显著下降（Ｐ＜０．０５）,产蛋率略有上升,蛋重略有下降,但二者变化均不显著（Ｐ＞０．０５）,当日饲喂料量继续下降到 １９５和 １８０ｇ时,与日饲喂料量 ２２５ｇ时相比,公、母鸭体增重、产蛋率和蛋重均显著下降（Ｐ＜０．０５）;２）经回归分析,公、母鸭体增重、产蛋率、蛋重与日饲喂料量有显著的直线或二次曲线关系（Ｐ＜０．０５）,产蛋率与蛋重之间也有显著的二次曲线关系（Ｐ＜０．０５）;３）日饲喂料量对种鸭死淘率及种蛋合格率、受精率、健雏率、入孵蛋孵化率和受精蛋孵化率均无显著影响（Ｐ＞０．０５）。结果提示,适当限制饲喂料量可降低体增重,提高产蛋率,但过度限饲会影响生产性能。     

三黄种鸡蛋重和蛋形指数对孵化率的影响

本试验选取３８周龄三黄种鸡蛋９９０枚，分别测定其蛋重和蛋形指数（短径／长径），采用４×４两因子交叉分组设计，将蛋重分成Ａ１（５０　ｇ以下）、Ａ２（５０．１～５５　ｇ）、Ａ３（５５．１～６０　ｇ）和Ａ４（６０．１　ｇ以上）四个水平，将蛋形指数分成Ｂ１（０．７２以下）、Ｂ２（０．７２１～０．７６）、Ｂ３（０．７６１～０．８０）和Ｂ４（０．８０１以上）四个水平，然后进行交叉分组，以研究不同蛋重和蛋形指数对种蛋孵化率的影响。结果表明，蛋重Ａ２（５０．１～５５　ｇ）和Ａ３（５５．１～６０　ｇ）受精蛋孵化率显著高于Ａ１和Ａ４（Ｐ　＜　０．０５），且Ａ２、Ａ３间差异不显著（Ｐ　＞　０．０５）　；蛋形指数在Ｂ２（０．７２１～０．７６）范围内，受精蛋孵化率极显著高于Ｂ１、Ｂ３和Ｂ４（Ｐ　＜　０．０１）。故蛋重在５０．１～６０　ｇ、蛋形指数在０．７２１～０．７６范围内，受精蛋孵化率最高。     

蛋鸡无鱼粉全价饲料的研究

通过５次６０４４只蛋鸡产蛋全程试验结果表明，无鱼粉全价饲料完全可以代替有鱼粉全饲料。平均产蛋率，平均蛋重试验组与对照组差异不显著（Ｐ＞０．０５），但试验组呈较好趋势，分别比对照组提高０．８－２．１和１．８－２．２个百分点之间；平均料蛋比试验组极显著地好于对照组（Ｐ＜０．０１）。     

饲料铅污染对蛋鸡生产性能、蛋品质以及抗氧化性能的影响

本试验旨在研究不同剂量铅对蛋鸡生产性能、蛋品质以及血清、肝脏和肾脏中与抗氧化性能相关指标的影响。选用 ４０周龄生产性能相近的海兰褐蛋鸡 ５７６羽,随机分为 ４组：对照组、试验 １组（Ｔ１组）、试验 ２组（Ｔ２组）、试验 ３组（Ｔ３组）,每组 ４个重复,每个重复 ３６羽。对照组饲喂基础饲粮,Ｔ１、Ｔ２、Ｔ３组分别饲喂在基础饲粮中添加 １５、３０、６０ｍｇ／ｋｇ铅的试验饲粮。试验期 ８周。结果表明：１）各组间产蛋率和料蛋比均无显著差异（Ｐ＞０．０５）,１～８周 Ｔ３组平均蛋重显著低于对照组（Ｐ＜０．０５）,１～８周 Ｔ１、Ｔ２、Ｔ３组平均日采食量分别较对照组降低了３．７２％（Ｐ＜０．０５）、１．９３％（Ｐ＞０．０５）、３．６３％（Ｐ＜０．０５）。２）与对照组相比,试验组蛋白高度和哈夫单位均有降低趋势,除 Ｔ３组蛋白高度（Ｐ＜０．０５）外均差异不显著（Ｐ＞０．０５）;Ｔ３组蛋壳强度和蛋壳厚度最低,第 ４周和第 ８周时 Ｔ３组蛋壳强度分别比对照组降低了 ２１．８９％、１６．８４％（Ｐ＜０．０５）;蛋壳厚度的变化趋势与蛋壳强度一致,均随着铅添加量的增加而降低,呈现一定的剂量 －效应关系。３）与对照组相比,各试验组血清、肝脏和肾脏中谷胱甘肽过氧化物酶活性均显著降低（Ｐ＜０．０５）;丙二醛（ＭＤＡ）含量均在一定程度上升高,Ｔ３组血清和肝脏中 ＭＤＡ含量均较对照组显著上升（Ｐ＜０．０５）,各试验组肾脏中 ＭＤＡ含量均显著高于对照组（Ｐ＜０．０５）;血清、肝脏和肾脏中还原型谷胱甘肽含量和总抗氧化能力以及总超氧化物歧化酶活性均呈现降低趋势。综上所述,饲料中铅污染可以导致蛋品质降低,诱导脂质过氧化作用,降低蛋鸡抗氧化能力。     

SP—96营养添加剂在蛋鸭的应用研究初报

ＳＰ－９６为一种具有重要生理活性物质的营养添加剂。在产蛋鸭饲料中添加一定剂量的ＳＰ－９６营养添加剂，存活率提高３．９７百分点；产蛋率提高３．３３百分点；蛋增重３．６５克／个；全蛋水分下降１．８百分点；蛋黄水分下降３．１８百分点；粗蛋白量提高０．５百分点；粗脂肪量提高１．９２百分点；蛋清中１７种氨基酸（含７种必需氨基酸）含量增加；全蛋灰分高出０．００８百分点；蛋清中锌含量提高０．１毫克／千克，锰含量下降０．１毫克／千克，钴、硒含量未变化     

大豆黄酮对肉种鸡产蛋和繁殖性能的影响

本试验旨在探索添加大豆黄酮后对肉种鸡产蛋和繁殖性能的影响。选取43周龄体况接近一致(体重、产蛋率)的肉种鸡S2系母鸡240只,随机分成4组,每组6个重复,每个重复10只:选取1组作为对照组,饲喂无大豆黄酮的基础饲粮,其余3组分别在基础饲粮基础上添加5、10、20 mg/kg大豆黄酮。再挑选20只强健的S2系公鸡采集精液,混精对试验鸡进行人工授精,试验期为15周。结果表明:与对照组相比,1)添加大豆黄酮对S2系母鸡体增重、采食量及死亡率无显著影响(P0.05)。2)添加大豆黄酮后能显著提高产蛋率(P0.05),其中10 mg/kg组产蛋率提高了4.1%(P0.05),日产蛋量提高了3.5%(P0.05),为3组最佳。5、10 mg/kg组料蛋比分别降低了8.0%和11.2%(P0.05)。3)10 mg/kg组受精率、孵化率和健雏率分别提高了13.1%、20.5%和5.8%(P0.05)。由此可见,饲粮中添加大豆黄酮能显著影响肉种鸡产蛋和繁殖性能,其中10 mg/kg组综合效果最佳。     

Effect of different levels of bee pollen on performance and blood profile of New Zealand White bucks and growth performance of their offspring during summer and winter months

The effect of bee pollen on productive and reproductive performances of adult buck rabbits and their offspring was studied during winter and summer seasons. Forty New Zealand White bucks were equally divided among four groups feeding the same commercial diet and receiving a water solution containing, respectively, 0 (control), 100, 200 and 300 mg bee pollen/kg body weight, twice per week along two experimental periods. The experimental periods were listed for ten weeks both during winter (30–40 weeks of age) and summer seasons (56–66 weeks of age). During the trials body weight, body weight gain, total feed intake, semen quality, fertility and blood constituents were determined. Fertility was determined after natural mating with no treated females. For each season, 80 weaned rabbits obtained from the bucks of the control group were equally divided (20 per group) among 4 levels (0, 100, 200 and 300 mg/kg BW) of bee pollen, given as a water solution twice per week. The offspring sired by bucks given 100, 200 and 300 mg (20 for each group and season) were not administrated bee pollen. The effect of bee pollen on growth performance of rabbits was studied from 4 to 12 weeks of age. Bee pollen at 200 mg/kg BW significantly (p < 0.01) improved semen quality, increased fertility percentage, improved biochemical profiles of blood and helps outstanding of bucks during both seasons. The same concentration of bee pollen increased body weight gain and survival rate and reduced feed intake and feed conversion ratio of offspring up to 12 weeks of age.     

葡萄原花青素对产蛋后期蛋鸡生产性能和抗氧化能力的影响

本试验旨在研究葡萄原花青素(grape procyanidins,GPC)对产蛋后期蛋鸡生产性能、蛋品质及血浆、肝脏和蛋黄抗氧化能力的影响。选取产蛋率、体重相近,健康状态良好的64周龄罗曼蛋鸡288只,随机分为4组,每组6个重复,每个重复12只鸡。对照组:饲喂基础饲粮;GPC50组和GPC100组:分别在基础饲粮中添加50和100 mg/kg的GPC;抗氧化剂特丁基对苯二酚(tert-butyl hydroquinone,TBHQ)组:基础饲粮+200 mg/kg TBHQ。预试期7 d,正试期56 d。结果表明:1)GPC显著抑制了产蛋后期蛋鸡产蛋率和鸡蛋哈夫单位下降(P0.05),显著增加了蛋壳厚度(P0.05)。2)GPC50组蛋鸡血浆和肝脏总超氧化物歧化酶(T-SOD)活性和总抗氧化能力(T-AOC)均显著提高(P0.05),血浆和肝脏丙二醛(MDA)含量显著降低(P0.05);TBHQ显著提高了蛋鸡血浆T-SOD活性(P0.05),显著降低了肝脏M DA含量(P0.05)。3)GPC显著提高了蛋黄T-SOD活性(P0.05),显著降低了蛋黄M DA和胆固醇含量(P0.05);TBHQ显著降低了蛋黄M DA含量(P0.05)。综上,饲粮添加GPC可改善产蛋后期蛋鸡产蛋率和哈夫单位,增加蛋壳厚度,改善机体抗氧化能力,其中以50 mg/kg GPC添加效果较好,优于200 mg/kg TBHQ。     

The effects of withdrawal of vitamin and trace mineral supplements from layer diets on egg yield and trace mineral composition

1. This study was conducted as three trials. 2. In the first trial, zinc, manganese, copper and iron concentrations were determined in dietary raw materials collected from various regions of Turkey. 3. In the second trial, 200 Hisex Brown laying hens, 30 weeks of age, were divided into two groups. The first group served as controls and were fed on a standard commercial layer diet. The second group were fed on a commercial layer diet that was not supplemented with trace minerals and vitamins. Egg production, egg weight, specific gravity, food consumption and food efficiency of the birds in each group were determined. In the unsupplemented group, egg production (0.75 vs 0.83) and food intake (114 vs 122 g) were lower than the those of the control group (P < 0.05). Food efficiency was 2.42 (kg food/kg gain) in the group consuming the unsupplemented diet and 2.36 in the controls. 4. In the third trial, as in Trial 2, Hisex Brown laying hens, 62 weeks of age were used. In the unsupplemented group, the mean egg weight was significantly lower than that of controls (68.0 vs 69.6 g) (P < 0.01). 5. At the end of the second and third trials, egg samples collected from experimental groups were hard boiled in water. The levels of zinc, manganese, copper and iron in the egg yolk were determined. The zinc level of the egg yolk from the control group of second trial was higher (23.5 mg/kg) than those of the unsupplemented group (13.6 mg/kg).     

维生素E对蛋鸡产蛋后期产蛋性能和蛋品质的影响

文章旨在研究日粮中不同梯度维生素E添加水平对蛋鸡产蛋后期产蛋性能和蛋品质的影响。试验选择60周龄罗曼白壳商品蛋鸡300羽,试验随机分为5组,添加水平分别为0(对照组),30、60、120、240 mg/kg,每组6个重复,每个重复10羽鸡,预试期1周,正试期8周。结果表明:与对照组相比,蛋鸡产蛋后期日粮中添加120 mg/kg的维生素E可显著提高蛋鸡产蛋后期产蛋性能(P<0.05);与对照组相比,蛋鸡产蛋后期日粮中添加120 mg/kg的维生素E可显著提高蛋壳硬度、蛋壳相对重、蛋黄相对重以及蛋黄颜色(P<0.05),蛋黄总胆固醇含量极显著降低(P<0.01)。综上所述,在蛋鸡产蛋后期日粮中添加120 mg/kg的维生素E可显著改善其产蛋性能和蛋品质。     

大蒜素对产蛋鸡生产性能和血清生化指标的影响

选用240只62周龄宝万斯褐壳蛋鸡,随机分成4个处理组,每组设置4个重复,每个重复15只鸡,大蒜素的添加量分别为0,50,100 mg/kg和150 mg/kg日粮,各处理基础日粮相同,试验期5周。研究不同水平大蒜素对蛋鸡生产性能、盲肠微生物和血清生化指标的影响。结果显示,50 mg/kg和100 mg/kg的大蒜素可显著降低蛋鸡料蛋比(P<0.05),各大蒜素组显著抑制盲肠大肠杆菌(P<0.05),提高了血清白蛋白的水平(P<0.05)。     

维生素D3对产蛋期种鹅蛋品质、血液生化指标及蛋壳超微结构的影响

试验基于饲粮中添加不同水平维生素D₃对种鹅生产繁殖性能、血清激素等的研究,进一步探索其对种鹅蛋品质、血液生化指标、二者相关性及蛋壳超微结构的影响。选择体况相近的34周龄五龙鹅种鹅180只,随机分为6组,每组6个重复,每重复1只公鹅和4只母鹅。6组的维生素D₃添加量分别为0、100、200、300、400、500 IU/kg。预试期1周,正试期10周。结果表明:0 IU/kg组蛋壳强度低于其他各组(P<0.01);400、500IU/kg组蛋壳厚度厚于0、100IU/kg组(P<0.01);300、400IU/kg组血清钙含量高于0IU/kg组(P<0.05);200、300、400 IU/kg组血清磷含量高于0、500 IU/kg组(P<0.01);血清钙含量与蛋重和蛋壳强度、血清磷含量与蛋壳强度呈显著正相关关系;300、400、500 IU/kg组蛋壳乳突层厚度大于0、100 IU/kg组(P<0.01)。可见,适宜维生素D₃水平可显著改善蛋壳乳突层厚度;血清钙磷含量与种蛋的蛋重、蛋壳强度...     

Effect of bee pollen levels on productive, reproductive and blood traits of NZW rabbits

Forty New Zealand White (NZW) rabbit does were equally divided among four groups feeding the same commercial diet and receiving a water solution containing, respectively, 0 (control), 100, 200 and 300 mg bee pollen/kg body weight (BW), 1 week before and after mating during moderate (October-February) and hot seasons (May-September) for three consecutive mating in each season. Does were mated with non-treated adult NZW male rabbits 11 days after kindling. Body weight of does, number of service per conception, conception rate, feed intake, litter size, milk production, blood constituents, weight of kits from birth up to weaning and survival rate were determined. For each season, 80 weaned rabbits originated from the does of the control group (untreated does) were equally divided into four groups (0, 100, 200 and 300 mg/kg BW) of bee pollen, given as a water solution twice per week from 4 to 12 weeks of age. The kit of the does given 100, 200 and 300 mg/kg BW did not receive bee pollen during the growing period (4-12 weeks of age). The effect of bee pollen on growing rabbit's performance was studied from 4 to 12 week of age. Bee pollen at 200 mg significantly (p < 0.01) increased body weight of does, conception rate, milk yield, litter size; improved biochemical profiles of blood and helps outstanding of does during both seasons. The same dose of bee pollen significantly increased kit growth and their survival rate until weaning. Growth and feed conversion ratio (FCR) of kits from the treated does during 4-8 weeks of age were significantly better than growth of kits from the untreated does that administrated bee pollen during 4-12 weeks of age. Meanwhile, during the following period (8-12 weeks of age) growth and FCR of kits given bee pollen from the untreated does were significantly better than that of treated does.     

茶多酚和酵母硒及其互作对绿壳蛋鸡生产性能、蛋品质及蛋黄中胆固醇和硒含量的影响

本研究旨在探讨茶多酚和酵母硒及其互作对绿壳蛋鸡生产性能、蛋品质及蛋黄中胆固醇和硒含量的影响。试验选用810只44周龄健康绿壳蛋鸡,随机分成9个组,每组5个重复,每个重复18只鸡。采用2因素3水平试验设计,在基础饲粮中分别添加不同剂量的茶多酚和酵母硒构成试验饲粮,茶多酚设0、200、400 mg/kg 3个添加水平,酵母硒(按硒计)设0、0.25、0.50 mg/kg 3个添加水平。预试期7 d,正试期28 d。结果表明:1)饲粮中添加茶多酚和酵母硒均有提高平均蛋重的趋势(P>0.05),添加200、400 mg/kg茶多酚能显著提高产蛋率且显著降低料蛋比(P<0.05);2)饲粮中添加茶多酚和酵母硒对蛋黄指数、蛋黄色泽和哈氏单位均有提高的趋势(P>0.05),添加0.50 mg/kg酵母硒能显著提高蛋形指数(P<0.05),同时使蛋壳厚度显著下降(P<0.05),添加200、400 mg/kg茶多酚能显著减缓鸡蛋在贮藏过程中哈氏单位的下降(P<0.01);3)饲粮中添加200、400 mg/kg茶多酚均能显著降低蛋黄胆固醇含量(P<0.01),添加0.25、0.50 mg/kg酵母硒均能显著提高蛋黄硒含量(P<0.01);4)茶多酚和酵母硒的互作对生产性能、蛋品质及蛋黄中胆固醇和硒含量均无显著影响(P>0.05)。由此可见,在基础饲粮中采用400 mg/kg茶多酚和0.25 mg/kg酵母硒的添加组合对蛋鸡生产性能和蛋品质不会产生拮抗作用,并可有效生产"富硒+低胆固醇"的绿壳鸡蛋。     

饲粮添加不同水平苜蓿粗多糖对蛋鸡生产性能和蛋品质的影响

本试验旨在研究饲粮添加不同水平苜蓿粗多糖对蛋鸡生产性能和蛋品质的影响。选取540只27周龄的海兰褐壳蛋鸡,随机分为6组,每组6个重复,每个重复15只鸡。对照组饲喂基础饲粮,试验组分别饲喂在基础饲粮中添加250、500、1 000、2 000和4 000 mg/kg苜蓿粗多糖的试验饲粮。试验期24周。结果表明:与对照组相比,1)试验1~8周,500、2 000和4 000 mg/kg苜蓿粗多糖添加组产蛋率均显著提高(P0.05);试验9~16周、17~24周和1~24周,250、500、1 000和2 000 mg/kg苜蓿粗多糖添加组产蛋率显著提高(P0.05),料蛋比显著降低(P0.05),且在试验17~24周和1~24周,总产蛋重量显著提高(P0.05),而平均蛋重和采食量无显著差异(P0.05);2)250、500和1 000 mg/kg苜蓿粗多糖添加组在试验第6、8、12、16、20和24周蛋壳颜色显著加深(P0.05),且在试验第8、12、16周较4 000 mg/kg苜蓿粗多糖添加组蛋壳颜色亦显著加深(P0.05);3)2 000 mg/kg苜蓿粗多糖添加组在试验第6、20、24周蛋壳强度显著提高(P0.05);4)试验第8、12、16、20和24周,250、500、1 000和2 000mg/kg苜蓿粗多糖添加组蛋壳厚度显著增加(P0.05),且4 000 mg/kg苜蓿粗多糖添加组在试验第8、20、24周蛋壳厚度亦显著增加(P0.05);5)2 000 mg/kg苜蓿粗多糖添加组在试验第10、12和24周蛋白高度和哈夫单位显著提高(P0.05),且2 000 mg/kg苜蓿粗多糖添加组在试验第10和12周蛋白高度和哈夫单位显著高于250、1 000和4 000 mg/kg苜蓿粗多糖添加组(P0.05)。试验表明,产蛋期蛋鸡饲粮中添加适宜水平的苜蓿粗多糖可以显著提高蛋鸡生产性能,改善蛋品质,且推荐适宜添加水平为250 mg/kg。