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N China's Inner Mongolia launches homegrown ‘Breeding No.2’ gene chip for quality dairy cattle breeding_我的网站

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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
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B |     Citing concerns about the effects of climate change, the International Olympic Committee said Friday it wants to pick two Winter Olympic host cities in July — putting Salt Lake City quickly into play for the 2034 edition.IOC president Thomas Bach said the Olympic body aims to confirm hosts for both the 2030 and 2034 Winter Games at its meeting on the eve of next year's Paris Olympics.Sweden, Switzerland and France have been working on possible bids for the 2030 edition and Salt Lake City officials have long targeted 2034. That would avoid the United States hosting back-to-back Olympics after the 2028 Los Angeles Summer Games.Picking Salt Lake City a decade in advance would give the IOC a trusted partner amid changing weather patterns and also could keep together people who have worked toward bringing the Olympics back the city that hosted the 2002 Games.The double award proposal by the IOC executive board still needs approval by the full membership at the Olympic body's annual meeting, which opens Sunday in Mumbai, India. That should be a formality.The IOC has declining options for Winter Games hosts. Bach noted that only 15 countries on three continents currently meet the criteria of having at least 80% of existing venues for snow sports and a “climate-reliable” outlook to host events in future decades.“We need to address very quickly this dramatic impact of climate change on winter sport,” Bach said in Mumbai. “By 2040, there remain practically just 10 NOCs who could host these snow events.”A likely longer-term project for the IOC is deciding on a rotation policy of a small pool of regular Winter Games hosts.The next deadline for the 2030 and 2034 Olympics will come Nov. 28-Dec. 1 at a board meeting in Paris. A single preferred candidate for each is expected to be chosen and then would enter into exclusive negotiations with the IOC.That is the new process for selecting Olympic host cities and regions, avoiding the once-traditional campaigns and votes which were at risk of vote-buying schemes.The Japanese city of Sapporo, which hosted the 1972 Winter Games, was once favored for the 2030 edition. That bid was officially dropped this week in fallout from criminal investigations and convictions for corruption tied to the Tokyo Olympics in 2021.___AP coverage of the Paris Olympics: https://apnews.com/hub/2024-paris-olympic-games。

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