城镇居民鸡蛋品牌转换行为及其影响因素分析——以北京市为例

笔者利用2016年5—6月份北京市城镇居民家庭农产品消费调研数据,以消费品牌鸡蛋的家庭为样本,运用二元Logit回归法对城镇居民鸡蛋品牌转换行为及其影响因素进行分析和研究。结果表明:影响消费者转换鸡蛋品牌的主要因素有消费者对食品安全、品牌鸡蛋属性的认知及消费者的鸡蛋消费习惯等,而除了年龄外消费者自身及家庭的特征并不能显著影响品牌转换的概率;注重食品安全以及追求高质量产品的消费者对鸡蛋品牌的转换概率较低,而对品牌鸡蛋满意度较低以及对价格比较敏感的消费者往往更偏好于转换鸡蛋品牌;此外,品牌鸡蛋的购买频率以及品牌鸡蛋消费占鸡蛋消费比例对品牌转换决策没有显著的影响。     

城镇居民品牌鸡蛋购买决策行为及其影响因素分析——以北京市为例

本文以北京市为例,在对北京市城镇居民家庭鸡蛋消费行为进行实地调研的基础上,定量分析了城镇居民品牌鸡蛋的购买决策行为,实证研究了影响城镇居民品牌鸡蛋购买决策的关键因素。研究结果表明:消费者在购买品牌鸡蛋时比较注重品牌鸡蛋的价格、营养和食用的安全性,消费者的收入是影响品牌鸡蛋购买的重要因素。此外,购买的渠道也会影响决策的制定。基于此,生产企业应当把控好产品质量、合理定价、拓宽销售渠道。政府要加强对品牌鸡蛋行业的监管、扶持以及宣传,以促进该行业的健康、可持续发展。     

影响鸡蛋消费者购买的因素——基于甘肃省的调查报告

随着消费者生活水平和对饮食营养健康要求的提高,鸡蛋作为一种家庭消费品,已经离不开人们的生活,但是现在的市场上对于鸡蛋生产行业和消费市场均呈现出了一种不健康的发展态势。本研究的主要目的在于,调查影响甘肃本地鸡蛋消费者的购买因素,通过分析得出其主导因素,这一研究对鸡蛋生产和销售行业的发展有重要意义。本文以调查问卷的形式,面向广大消费群体对鸡蛋消费者购买意向做了一个系统详实的调查报告。经本文调查分析表明,鸡蛋的价格变动和鸡蛋品牌等因素与消费者对鸡蛋的消费量之间没有呈现出明显的正相关,影响广大鸡蛋消费者购买的外部主导因素是鸡蛋安全健康问题;同时发现,消费者对鸡蛋正确认知也是鸡蛋生产行业发展的关键。本文的研究,不仅给当前鸡蛋生产行业的方向做了一个科学的展望,对当地广大消费者的消费观念也给出了一个正确的参考。     

基于联合分析的城乡居民液态奶消费偏好研究——以黑龙江省756位消费者为例

为了研究我国城乡居民对液态奶的消费偏好,笔者采用联合分析的方法,调查了黑龙江省哈尔滨市、齐齐哈尔市、佳木斯市等10个地区的756个消费者,运用最小二乘法的回归模型分析了城乡居民对液态奶4个产品属性(价格、品牌、脂肪含量、口味)及其不同属性水平的消费偏好。结果表明:品牌是最受消费者关注的因素,价格对消费者购买液态奶的影响有所下降,城市和农村居民更加关注"脂肪含量",乡镇居民更关注"口味";对于大多数消费者而言,液态奶的4个属性的相对重要性为品牌价格脂肪含量口味,最受消费者欢迎的液态奶产品为2元/250 m L的本地品牌的低脂肪含量的风味奶或酸奶。     

某品牌猪肉消费情况分析

文章以消费者为研究对象,通过调查问卷的方式在兰州市展开调查,了解当前品牌猪肉消费情况,针对兰州市消费者个人信息和对某品牌猪肉的消费现状与了解程度及影响消费者购买意愿的主要因素设计问答题,然后对调查结果数据进行统计,采用二元回归方法进行分析对购买意愿有显著影响的因素;由统计结果和回归分析结果可得消费者的年龄、收入、受教育程度、购买喜好、价格因素、品牌了解程度对猪肉购买意愿影响较大,其中年龄、受教育程度、对品牌的了解程度对购买意愿的影响显著。     

城市消费者购买品牌猪肉意愿的影响因素研究——基于济南市的调查数据

本文以济南市722个消费者的调查数据为依据,对消费者购买安全生鲜猪肉意愿的影响因素进行了实证分析。研究结果表明,消费者是否愿意选择购买安全生鲜猪肉受其年龄、文化程度、收入水平、婚姻状况、消费者是否有未成年孩子、消费者对安全品牌猪肉的认知程度以及安全猪肉价格等因素的影响,但是不同因素对消费者购买安全猪肉意愿的影响各不相同。在此基础上,本文最后提出了提高消费者对安全猪肉的认知水平和增强消费者选择购买品牌猪肉意愿的政策与建议。     

兰州市品牌猪肉消费者购买行为的影响因素分析

文章为了找出影响猪肉消费者购买行为的因素,以兰州市236名猪肉消费者为样本,用调查问卷等方式对兰州市品牌猪肉消费者进行调查。运用二元Logistic回归模型对大量的调查数据进行对比分析,得出影响消费者购买品牌猪肉行为的因素,如消费者的个人特征、品牌猪肉价格以及对品牌猪肉的了解程度等。调查数据表明,61.02%以上的消费者了解该品牌猪肉,也有83.1%以上的人愿意购买这个品牌的猪肉。在以上结论的基础上,提出增强品牌猪肉购买意愿和加强猪肉品牌建设的建议。     

山东省鸡蛋及其加工制品的消费调研

为分析山东省城乡居民的鸡蛋及其制品消费行为特征,研究影响鸡蛋消费的关键因素,对鸡蛋及其加工制品的消费状况进行问卷调查。以青岛、济南、潍坊、临沂、聊城五地市的消费者为主要对象,以调查问卷的形式对鸡蛋的购买地点、购买频率、质量安全、价格及对鸡蛋加工制品的了解等方面展开调研。结果显示:各地消费者在超市和零售点购买鸡蛋是消费的两大方向;购买频率集中在2~4周1次;鸡蛋消费价格基本趋势为5~10元/500 g;购买鸡蛋时最为关心的还是内在的质量安全问题;在对鸡蛋的用途方面的了解中最熟悉的是添加在蛋糕等面点中,其中营养成分被广泛了解的是卵磷脂。从调研结果分析,建议通过网络销售等新型模式降低直销点的成本、提高生产要求、加强监管力度,严格保证新鲜鸡蛋的质量安全、促进龙头企业与养殖户及科研部门联合,对鸡蛋进行深加工并进一步促进鸡蛋及其制品的消费市场。     

咯咯哒:鸡蛋也专业营销

蛋品属于传统产业,仅仅在中国,蛋品行业的市场规模每年约为2000亿元。虽然市场规模大,但是蛋品生产企业发展不平衡,主要以价格为竞争手段,普通鸡蛋和品牌鸡蛋鱼龙混杂,品牌鸡蛋中缺乏领导品牌,消费者对品牌鸡蛋的认知不足,品牌意识比较淡。     

酸奶消费者购买行为的实证研究

以在校大学生问卷调查为例,应用联合分析法,运用极差分析、方差分析的统计学方法得出结论:价格是影响消费者酸奶购买行为的最显著因素;品牌和包装类型对酸奶购买的影响不相上下;净含量和保质期对消费者酸奶购买影响较小。乳品企业应针对不同的消费群体开发相应的产品、制定不同的市场营销策略。     

城镇居民普通鸡蛋购买行为影响因素分析——基于北京与河北的实地调研

为摸清城镇居民家庭鸡蛋消费情况,国家蛋鸡产业技术体系产业经济研究室于2019年7月,在北京市城区以及河北省石家庄市、邯郸市、保定市城区开展大范围调研活动。研究利用实地调研获取的城镇居民家庭普通鸡蛋购买行为数据资料,定量分析了影响城镇居民普通鸡蛋购买行为及消费量的主要因素。研究发现:经济和家庭结构因素对消费行为与消费量均产生显著影响;社会客观因素主要影响消费行为;消费者主观认知因素则对消费量具有显著影响。基于以上结论,提出促进鸡蛋消费的对策建议。     

Developing logistic regression models using purchase attributes and demographics to predict the probability of purchases of regular and specialty eggs

1. Consumers’ interest in specialty eggs appears to be growing in Europe and North America. The objective of this research was to develop logistic regression models that utilise purchaser attributes and demographics to predict the probability of a consumer purchasing a specific type of table egg including regular (white and brown), non-caged (free-run, free-range and organic) or nutrient-enhanced eggs. These purchase prediction models, together with the purchasers’ attributes, can be used to assess market opportunities of different egg types specifically in British Columbia (BC).

2. An online survey was used to gather data for the models. A total of 702 completed questionnaires were submitted by BC residents. Selected independent variables included in the logistic regression to develop models for different egg types to predict the probability of a consumer purchasing a specific type of table egg.

3. The variables used in the model accounted for 54% and 49% of variances in the purchase of regular and non-caged eggs, respectively. Research results indicate that consumers of different egg types exhibit a set of unique and statistically significant characteristics and/or demographics. For example, consumers of regular eggs were less educated, older, price sensitive, major chain store buyers, and store flyer users, and had lower awareness about different types of eggs and less concern regarding animal welfare issues. However, most of the non-caged egg consumers were less concerned about price, had higher awareness about different types of table eggs, purchased their eggs from local/organic grocery stores, farm gates or farmers markets, and they were more concerned about care and feeding of hens compared to consumers of other eggs types.

     

Beef traders’ and consumers’ perceptions on the development of a natural pasture-fed beef brand by smallholder cattle producers in South Africa

Beef traders’ and consumers’ perceptions on the development of a natural pasture-fed beef (NPB) brand by smallholder cattle producers were investigated. In total, 18 meat traders (five abattoirs and 13 beef retailers) and 155 beef consumers were interviewed using structured questionnaires. All meat traders had the potential but were not willing to support the development of a NPB brand citing smallholder farmers’ limited ability to supply sufficient volumes of high-quality cattle. Consumers (81%) were prepared to purchase NPB upon availability on the market but were not willing (80%) to pay a brand premium. Logistic regression model results showed that consumers’ willingness to buy NPB and pay a premium were influenced (P < 0.05) by gender, household size, income source, meat preference, meat consumption frequency, money spent on beef, frequency of beef purchases and consumption. Overall, beef traders and consumers held positive impressions regarding the development of a NPB brand by smallholder cattle producers but were not willing to support its development. Positive impressions held by value chain partners on the development of a NPB brand provide a basis for advancing development of a NPB brand. Initial efforts should enhance farmers’ capacity to supply sufficient volumes of high-quality cattle.     

乌鲁木齐市居民生鲜牛肉消费偏好分析

为了调查乌鲁木齐市居民对生鲜牛肉的消费偏好,采用随机抽样方法对132名消费者进行问卷调查或访谈。结果表明,喜欢吃牛肉的人占84.09%,但每天消费牛肉的人仅占8.33%;50.00%的消费者喜欢无包装产品;多数消费者家庭月均牛肉消费量在3kg左右。根据以上调查结果,提出了扩大优质肉牛养殖规模,加强品牌建设,改进包装设计,优化牛肉分割,提高生鲜牛肉质量等建议。     

营养和安全因素对北京消费者牛奶产品选购的影响

目的:研究营养和安全因素对牛奶产品选购种类的影响.方法:以自填式问卷调查北京市713名消费者牛奶产品的选购行为,采用SPSS 18.0进行数据分析.结果:购买牛奶的消费者看重其中的营养益处,乳糖不耐和不喜欢牛奶味道是最大的障碍.对健康相关障碍因素的认知虽然抑制了全脂奶的选购意图,但是有利于各类营养成分调整牛奶产品或有机产品的选购.结论:对营养和安全因素的关注促进消费者对多样化健康宣称产品的接受度.     

Comparative Pigmentation Efficiency of High Dietary Levels of Apo-Ester and Marigold Extract on Quality Traits of Whole Liquid Egg of Two Strains of Laying Hens

This trial was carried out to compare the effect of the dietary supplementation of high doses of either synthetic pigment ethyl ester of β-apo-8′-carotenoic acid (apo-ester) or natural pigments, mainly lutein and zeaxanthin, extracted from Tagetes erecta, on egg quality of hens laying brown shell eggs (ISA Brown) and white shell eggs (Hy-Line White W-36). The hens of each strain were divided into 6 groups and fed a corn-soybean basal diet supplemented either with 40, 60, and 80 ppm of apo-ester (APO) or with 120, 180, and 240 ppm of marigold extract (MAR). Egg pigmentation rose linearly and significantly (P < 0.01) as the dietary levels of apo-ester increased, but this did not occur when MAR supplementation was used. The amount of β-carotene equivalents in whole liquid egg of MAR treatments was almost constant with varying pigment dietary dose and was significantly lower (P < 0.01) than in APO treatments. In both hen strains, whole liquid egg redness (a*) and yellowness (b*) were higher with APO supplementation. The egg component weights were highly affected (P < 0.01) by the hen strain, with yolk:egg ratio higher in the Hy-Line. The trial confirms that in spite of the higher level of MAR supplementation, APO has a better efficiency in whole liquid egg pigmentation. The ISA Brown hens showed a better ability to absorb dietary carotenoids than did the Hy-Line White.     

文昌鸡MTNR1B基因的多态性及其与产蛋性状的关系

本研究旨在了解褪黑激素受体基因MTNR1B的多态性及其与文昌鸡产蛋性状的关系。用直接测序的方法检测MTNR1B5′调控区、外显子1和外显子2的单核苷酸多态性,并将其与文昌鸡的产蛋性状进行关联分析。结果表明,在外显子1和2的编码区未发现碱基突变或缺失,而在5′调控区发现15个单核苷酸多态位点。其中-778位点突变(A→G)对文昌鸡中期(22～31周龄)产蛋数和46周龄总产蛋数的显性效应分别达到了2.3和6.2枚(P<0.05)。对后期(32～46周龄)产蛋数和46周龄总产蛋数而言,-216位点C对A为优势等位基因,加性效应值分别为2.5和3.2枚,显性效应分别为3.5和6.8枚,且表现为超显性。在4种单倍型中,AA单倍型个体的后期产蛋数和46周龄总产蛋数最低,GC单倍型个体的开产日龄最早。AC/GA联合基因型母鸡拥有最高的中期产蛋数、后期产蛋数和46周龄总产蛋数。综上所述,MTNR1B基因的外显子高度保守,而5′调控区的SNPs有望成为影响产蛋性状潜在的遗传标记。     

Effect of magnesium deficiency in the hen on egg production and hatchability of eggs

The influence of the level of magnesium (Mg) in the ration on reproduction by the hen was studied in 2 experiments. In experiment 1, it was found that feeding a semi‐purified ration, containing 56 p.p.m. of Mg, resulted in decreased egg production and reduced serum Mg concentration within 10 to 14 days. Although fertility of eggs was not affected noticeably by Mg deficiency, hatchability of fertile eggs was decreased markedly. The influence of inadequate dietary Mg was partially alleviated by adding 250 p.p.m. Mg to the ration. In experiment 2, a decline in hatchability preceded decreases in egg production and food consumption. A decrease in Mg concentration in egg contents accompanied the decline in hatchability. Hens fed rations containing 50 or 150 p.p.m. added Mg produced eggs of relatively low hatchability by day 14 of the trial. Subsequent to being fed a ration containing 550 p.p.m. added Mg, these hens increased in rate of egg production while hatchability of fertile eggs also increased. The results indicate that the dietary Mg requirement of the laying hen, sufficient to maintain a high rate of production of eggs which hatch satisfactorily, is 400 or more p.p.m.     

Optimization of Proliferation Parameter of H1N1 Influenza Virus in Chicken Embryo

In order to study the best propagation parameters of H1N1 subtype influenza virus in chicken embryo,this study was conducted to research the effects of egg selection and preservation before hatching and hatching parameters setting on production of H1N1 subtype influenza virus.In the egg selection and preservation,we mainly investigated the egg weight,egg shape index,storage period,disinfection time and method and other factors,the results showed that egg weight of 55 to 65 g,egg shape index of 1.30 to 1.35,egg storage period of 1 to 4 d,storage temperature of 16 to 18 ℃,humidity of 70% to 80%,during storage period,eggs formaldehyde fumigation time 30 min,we could provide the best eggs for H1N1 subtype influenza vaccine production.The effect of hatching parameters on production of H1N1 subtype influenza virus,this experiment mainly investigaed incubation temperature,humidity,times of turning over eggs,aeration and other parameters,the results showed that in the production of H1N1 subtype influenza virus,the optimal parameter set to hatch:temperature 1 to 7 d was 38.2 ℃,8 to 9 d was 38.0 ℃,10 d was 37.8 ℃;Humidity was 65% to 70% from 1 to 10 d;Turning over eggs frequency was 1 times/2 h,before and after each dip 45°;1 to 5 d aeration set to 4,6 to 10 d set to 5.The results provided quality chicken hatchery technology for H1N1 subtype influenza vaccine production in order to ensure the quality and yield of allantoic fluid.     

H1N1亚型流感病毒鸡胚增殖参数的优化

为了研究最佳的H1N1亚型流感病毒鸡胚增殖参数,本试验进行了孵化前种蛋的选择与保存、鸡胚孵化中各参数设定等因素对H1N1亚型流感病毒产毒量影响的研究。其中种蛋的选择与保存,主要考察了蛋重、蛋形指数、保存期、消毒时间及方法等因素,结果显示,蛋重为55~65 g,蛋形指数为1.30~1.35,种蛋保存期为1~4 d,保存温度为16~18 ℃,保存湿度为70%~80%,保存期种蛋的甲醛熏蒸消毒时间为30 min时,可以为H1N1亚型流感疫苗生产提供最佳的种蛋。孵化过程中孵化参数对H1N1亚型流感病毒产毒量的影响,本试验主要将孵化温度、湿度、翻蛋、通风等参数作为研究对象,结果显示在生产H1N1亚型流感疫苗时,最佳孵化参数设定为:温度1~7 d为38.2 ℃、8~9 d为38.0 ℃、10 d为37.8 ℃,湿度1~10 d为65%~70%,翻蛋频率为1次/2 h,前后倾角各为45°,通风风门设定为1~5 d为4、6~10 d为5。本试验结果为H1N1亚型流感疫苗生产提供优质的鸡胚孵化技术,确保鸡胚尿囊液的质量和收获量。