日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

US EUROPE AFRICA ASIA 中文
Business / Industries

Bringing home the bacon

By Zhong Nan (China Daily) Updated: 2014-05-06 15:00

China's grain security is facing a challenge caused by excessive imports of breeding pigs, especially from North America and Europe, to enlarge their herds of swine.

Keen to resolve the problems caused by frequent shortages of pig products and rising pork prices in the 1990s, China began to import breeding pigs in large quantities into the domestic market in 2007. The number of foreign pig breeds has soared every year since.

Bringing home the bacon
Domestic pig breeds at risk of dying out

Bringing home the bacon
Chinese pork firm launched $5.3b IPO in Hong Kong

The country imported 173,000 breeding pigs from the world market in 2013, up 13.8 percent from a year earlier and hit a new record, according to the General Administration of Customs. In the meantime, China also opened a new channel to allow large quantities of British pig semen into China this year.

However, in the hope of making quick money, the majority of pig farmers are inclined to put the pigs straight to work instead of making efforts such as quality checks and selective breeding to develop their businesses in a sustainable way.

"Despite the fact these foreign species can grow faster, have a better fat-to-meat ratio and yield higher returns compared with native species, their quality and future generations will decline. They cannot retain normal survival rates and fertility," said Wang Lianzeng, vice-president of the Beijing-based China Animal Agriculture Association.

Affected by the high mortality rates caused by nationwide crossbreeding, Wang said a sow's reproduction rate in China has declined from 16 piglets in 2006 to 14 last year, with two of them often dying when they grow to between 40 and 55 kilograms (pigs are normally slaughtered at a weight of around 60 to 80 kg in the UK). It costs pig farmers up to 420 kilograms of feed to get them to reach this weight, including feed for the sow and better quality nutrition for piglets.

In contrast to China, the average reproduction rate for a sow is more than 20 annually in the United States and Denmark.

Previous Page 1 2 Next Page

Hot Topics

Editor's Picks
...
...
主站蜘蛛池模板: 国产免费一级视频 | 日本中文在线观看 | 国产91在线播放精品91 | 国产东北露脸精品视频 | 天堂中文在线播放 | 福利视频一区 | 日韩精品在线播放 | 成人久久久久久久 | 免费av中文字幕 | 黄色一级大片在线免费看国产一 | aaaaaaa毛片| 免费看av大片 | 美女黄页在线观看 | 亚洲一区在线播放 | 毛片黄片免费看 | 国产成人综合网 | 国产3级在线观看 | 超碰成人福利 | 欧美成人做爰大片免费看黄石 | www欧美视频 | 欧美激情天堂 | 伊人网在线观看 | 亚洲最新在线 | 亚色在线观看 | 日韩av成人在线观看 | 亚洲精品高清视频 | 欧美日韩中文字幕在线观看 | 8x国产一区二区三区精品推荐 | 久久久久久99 | 小视频在线播放 | 极品久久久久久久 | 精品久久久久久久久久久国产字幕 | 99在线免费观看视频 | 久久久国产精品一区二区三区 | 亚洲综合久 | 国产精品成人国产乱一区 | 殴美一级片 | 欧美久久影院 | 超碰免费在线 | 日韩一级网站 | 黄色av大全|