1. A flock of ducks. Eliminate old, weak, sick, disabled and low-yielding ducks. 2. Strictly control the room temperature. The temperature in the booth must be kept above 5°C. After feeding the ducks every night, the duck sheds must be strictly enclosed and fenced. Grass mats made of straw or wheat straw should be used around the shed. 3. Thick mat grass. In the egg production area around the duck house, a clean, soft straw, wheat straw, and other forage are placed in a thickness of 30 cm. 4. Add night food. Feeding at night should pay attention to warm drinking water, and at the same time night food should be dominated by corn and other high-energy feeds, and protein should not be too much. 5. Increase the stocking density. It is better to feed 8-9 ducks per square meter for the density of overwintering ducks, which is beneficial to the self-heating of ducks. Ruxolitinib (also known as Rucotinib) is a kinase inhibitor indicated for the treatment of intermediate or high-risk myelofibrosis, including primary myelofibrosis, post-polycythemia vera myelofibrosis, and post-thrombocythemia essential myelofibrosis. ruxolitinib (Jakavi), an oral JAK1 and JAK2 tyrosine kinase inhibitor, was approved in the EU in August 2012 for the treatment of intermediate or high-risk myelofibrosis, including primary myelofibrosis. Myelofibrosis after polycythemia vera and essential thrombocythemia. Ruxolitinib Intermediates,Ruxolitinib Intermediate CAS 1153949-38-2,CAS 1153949-38-2 Ruxolitinib Intermediate,Ruxolitinib intermediates 3-Cyclopentylacrylonitrile Shijiazhuang Dingmin pharmaceutical Sciences Co.,Ltd , https://www.dingminpharma.com