Effects of previous days open, previous days dry, and present days open on lactation yield

Influences of days open present lactation, days open previous lactation, and days dry previous lactation were fit simultaneously to determine their effects on measures of yield, which were fat-corrected milk, milk, and milk fat, all adjusted to a 305-d mature equivalent basis. Best linear unbiased estimates were obtained. Multiparity analyses were conducted using a model in which later parity records could be compared with more unselected first parity records. Additional parity information made little difference in the influence of previous days dry and previous and present days open on yield. As present days open increased from 20 to 300 d, lactation yields for FCM, milk, and milk fat increased approximately 1250, 1350, and 45 kg. As previous days open increased from 20 to 300 d, lactation yields for FCM, milk, and milk fat increased approximately 625, 650, and 25 kg. Cows dry 60 to 69 d gave the most milk the following lactation. Cows dry less than 40 d produced much less milk the next lactation. Heritability estimates for previous days dry were less than 7%. Multiplicative adjustment factors were developed to adjust lactation yield records for the largely environmental effects of days open and days dry.     

多销工作台--镂铣加工的领先手段

在英国CNC构件公司内，具有创新特色的多销工作台是第一台莱亨巴赫(Reichenbacher)公司ECO型加工中心的现代型装置，指出这是一种领先手段，适用于“一次性”或短周期快速生产办公家具和橱柜、门等元件。     

Challenges ahead for food science

Over the last decades, market forces have pushed many food companies into a process of continuous cost cutting and rationalization. The only way to escape this 'spiral of death' is to innovate.
  This presents new challenges to food technologists: they have to connect the right functional benefits to the emotional benefits to support brand strengths. To achieve the desired speed to market, companies should build skills to utilize the latest technology and learn to work in an open innovation environment.     

数字相机的技术发展对印刷的推动

近几年,随着信息技术的进步,特别是互联网和多媒体技术的高速发展,人们对获取、复制、传播图像信息的质量、速度、手段提出了更高的要求,数字相机的技术发展在一定程度上满足了这一需要.     

欧美玩具市场在矛盾中发展

回顾2013年的海外玩具市场,可以用“在矛盾中发展”一句话概括。在“i”世代产品为代表的科技玩具继续低龄化渗透的同时,也引起了家长的担忧,在玩具领域产生了“传统”与“科技”之间的矛盾;史上最严玩具标准欧盟玩具新指令的全面实施,令玩具企业面临着“检测成本高企”与“低价吸引顾客”之间的矛盾;电商在玩具零售领域渗透加深和消费...     

2011玩具市场或延续好景

很多人也许认为小孩子更喜欢新潮电子游戏玩具,但事实上恐非如此,综合分析各种市场信息和数据．在过去的一年,普通玩具显然比电子游戏机更受孩子们欢迎。     

携手幼教 云和木玩业迎新机

11月1-3日,第五届中国木制玩具文化节在“中国木制玩具城”——浙江省丽水市云和县举行。