日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

Global EditionASIA 中文雙語Fran?ais
Lifestyle
Home / Lifestyle / News

New findings suggest that geese were the first domesticated fowl

China Daily | Updated: 2022-03-24 09:00
Share
Share - WeChat

HANGZHOU-Findings of an international team of researchers from Japan and China suggest that geese might have been the first poultry species to have been domesticated by humans-as far back as 7,000 years ago.

Scientists have long held different opinions on the history of the domestication of birds, with a belief that it was chickens which were the first to be domesticated.

In 2014, Chinese researchers reported ancient DNA sequences taken from the earliest archaeological chicken bone discovery in China, suggesting chickens were domesticated in northern China as early as 10,000 years ago.

The researchers behind the latest findings say that the 2014 study lacks firm evidence.

In the new study, the team excavated the archaeological site of Tianluoshan, a 7,000-year-old rice cultivation village in the lower Yangtze River valley in what is today known as East China's Zhejiang province. They found a total of 232 goose bones at the site. The inhabitants of the village were hunter-gatherers.

The researchers used multiple approaches to study the bones, and found evidence of domestication.

Four bones were from goslings ranging from eight to 16 weeks old, suggesting they hatched near the site. Geese were domesticated from wild geese. These migratory birds fly to northern Siberia to breed after the spring equinox and then fly south for the winter, according to researchers from the Zhejiang Provincial Institute of Cultural Relics and Archaeology.

They said the goslings were too young to have flown in from elsewhere. At the time, Tianluoshan did not have the conditions to be a natural breeding place for wild geese, so it follows that the goslings were born after domestication.

The researchers also analyzed the chemical makeup of adult goose bones, which contained evidence of the water they drank. Their analysis indicated that the adult geese also seemed to have been locally bred. They were all roughly the same size, suggesting captive breeding. Carbon dating also showed that the bones belonged to geese that lived about 7,000 years ago.

The findings have been published in the US journal Proceedings of the National Academy of Sciences.

Researchers say ancient DNA analysis is required in further studies to investigate which species were bred to become local geese populations.

Xinhua

Most Popular
Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 日本xxxx18高清免费 | 九九热视频这里只有精品 | 视频二区 | 久久av热 | 一区二区三区视频免费观看 | 色中色综合网 | 日韩电影第一页 | 亚洲区视频 | 国产精品毛片一区二区三区 | 色淫湿视频 | 啪啪网页 | 日韩成人一区 | 国产一区二区三区在线看片 | 国产福利一区二区在线精品 | 91视频进入 | 毛片999| 日韩欧美二区在线观看 | 一级毛片特级毛片免费的 | www一区二区| 成人在线播放 | 无遮挡啪啪成人免费网站 | 天天插夜夜 | 91日日 | 一级色黄 | 中文字幕一区在线观看视频 | 国产日| 久久久久久国产精品 | 成人一级视频 | 天天在线欧美精品免费看 | 99热精品在线 | 久久精品国产99久久久古代 | 色视频在线观看 | av在线播放免费 | 亚洲国产综合久久精品 | 国产正在播放 | 黄色精品| 欧美一级高清免费 | 伊人久久综合 | 色aaa| 538亚洲欧美国产日韩在线精品 | 免费a视频在线观看 |