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Cattle Photo: VCG
North China's Inner Mongolia Autonomous Region has launched a genomic breeding tool for dairy cattle, also known as a gene chip, enabling precise screening for key traits such as high milk yield, high fertility, disease resistance and longevity, and marking a fresh breakthrough in China's dairy cattle breeding technology, the Inner Mongolia Daily reported on Saturday.
As an iteration of the previous generation dairy cattle breeding array, which holds proprietary intellectual property rights, the new-generation "Breeding No.2" breeding array was led by the National Center of Technology Innovation for Dairy and developed by Youran Dairy Saikexing, with upgrades in loci coverage, compatibility and gene-trait prediction algorithms.
The "Breeding No.2" breeding array covers about 50,000 loci across the dairy cattle genome, with a focus on functional loci tied to milk production, reproduction, disease resistance and length of productive life. It has achieved a sample call rate of 99.65 percent and a genotyping concordance rate of 99.91 percent for duplicate samples, and is compatible with mainstream international chips, allowing historical breeding data to be shared and reused.
Drawing on a phenotype database and genome resequencing data to optimize a proprietary algorithm, advancing breeding evaluation from qualitative screening to quantitative assessment, bringing the accuracy of breeding stock selection up to advanced international levels, according to the report.
The breeding array enables more precise genomic selection of calves at an early stage, substantially shortening the generation interval in breeding bull selection and cutting spending on raising low-performing replacement heifers. Compared with imported high-density chips, the "Breeding No.2" chip carries a lower per-sample testing cost and delivers stronger input-output returns, making it highly suited to large-scale dairy cattle breeding operations in China, the report said.
Global Times
。今年冬天清原又整“新活”了多项特色冰雪项目将为游客带来一场新意多、心意足的冰雪盛宴　　今年，清原2024-2025年冰雪旅游季以“冰雪清原行相约十五冬”为主题，从游客视角策划冰雪产品，规划布局了七大冰雪场景和七项冰雪赛事娱乐活动，旨在积极推动“冰雪+旅游”“冰雪+赛事”“冰雪+商贸”深度融合发展，着力突出“林海雪乐园冰河欢乐场”特征，构筑全域冰雪旅游产业新格局。那么问题来了今冬清原都有哪些冰雪场景焕新升级？又是咋花式“宠且”的走，带您一探究竟 ↓↓↓ 玉龙溪冰雪大世界北三家镇黑石木村全新建设“依水小筑”，包含60个冰雪项目，体验感十足；　　南山城镇　　打造大北岔和兰青溪两个景区，通过套票方式，用更实惠的价格吸引游客前来享受丰富的冰雪游乐服务。

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