Most producers see spring turnout as a time to ease back on concentrate feeding and make the most of production from grass. While they may see a lift in yield, particularly in mid-late lactation cows, and a drop in feed costs, this can be at the expense of milk butterfat, feed efficiency and cow health. As nutritionist Dr Sion Richards from Provimi explains, spring grass is higher in energy, protein and oil than grass silage (see Table 1), but it has to be supplemented properly to make the most of the available nutrients. As a consequence of the higher oil and sugar content as well as lower NDF levels, spring grass frequently causes a dip in milk butterfat.
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机译：具有薄皮的玻璃压塞-在热和压力下会变形，以避免形成接缝AB DE4238918A玻璃压铸塞具有薄如厚度为0.3-0.5毫米的皮肤，由于0.3％的热量和0.2％的拉伸力而分离。在塞子静止之前或之后不久，通过压力介质从芯塞上取下。压力介质也通过孔（2,3,7）供给，以去除热量，从而消除塞子分离后的变形。从玻璃杯。优点-避免在插头和盖环之间形成接缝。 AN 94168712 TI车辆防盗装置-使用弹簧锁定机构，该机构包括两部分的螺栓，上部永久固定在管中，并通过压缩弹簧连接到上管
