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Odorless pig farms breed fortune

Date: 2020-11-16 17:45:58     
Source: Xinhua

Unlike traditional pig farms where the surrounding area is penetrated by the smell of the livestock, Xiang Chengbing's farm is almost odorless.


In a two-story hog house in Chongqing, China, the pigs are raised on the upper floor made of carbon steel net, with a waste collection machine equipped on the lower floor.


The machine automatically collects waste then pushes it outside, which, when mixed with crop straw and probiotics, is made into organic manure.


"When pigs live a happy and comfortable life, their meat will be better," said Xiang while watching the pigs on a surveillance monitor.


Xiang, 55, is the general manager of an ecological farming company in Wanzhou District, southwest China's Chongqing Municipality.


The farm is among 86 ecological pig farms set up in the rural area of the district in 2018.
Xiang, who has raised pigs for over 20 years, said it is the first time that he has not used water to clean his farm.


Chen Rong, a consultant with the district's commission of agriculture and rural affairs, said traditional pig farms use a large amount of water for cleaning, and the dirty water mixed with waste is hard to process, emitting foul smells.


"After being washed by water, the humid hoggery also makes it easier for the pigs to get sick," he said, adding that the new hoggery form has avoided the use of water, and therefore, largely eliminated the odor.


Chen said the commission has also promoted the use of a water feeding facility, which collects and recycles the pigs' spilled drinking water.


Xiang said probiotics and some traditional Chinese medicine are added to the feed, which helps improve the pigs' immunity.


The healthier pigs that are free of antibiotics are sold at 20 percent higher than the market price, said Xiang, adding that the pig waste can also be sold as manure.


Yang Bo, a local orange farm manager, often comes to buy the manure for the 7,000 orange trees on his farm.


"The waste used to be too wet to transport, as it was mixed with water," he said. "Now that the new hoggery has been adopted, we can buy the manure, at a price lower than the organic fertilizer."


According to plans, about 1 million pigs will be raised in the ecological farms in Wanzhou by the end of next year. The industrial chain, which includes feed production and pork processing, will bring 16 billion yuan (about 2.4 billion U.S. dollars) of output annually to the district, according to Chen.