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Culture method for reducing emission of nitrogen and phosphorus from pig raising and application

A breeding method and nitrogen and phosphorus technology, applied in animal husbandry and other directions, can solve the problems of high total nitrogen and total phosphorus, adoption of end-treatment by small and medium-sized farmers, severe pollution situation, etc., to improve dietary structure, save breeding costs, reduce The effect of handling the burden

Inactive Publication Date: 2012-10-24
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Excess nitrogen and phosphorus cannot be absorbed and will be excreted from the body, resulting in higher total nitrogen and total phosphorus in pig feces and urine
As for pollution control, most farmers are unwilling to spend a lot of financial and material resources on effective treatment units due to economic factors, which prevents terminal treatment from being widely adopted by small and medium-sized farmers, and the pollution situation is still severe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The effect was verified with fattening pigs with an average weight of about 58±2kg in the breeding farm of Hainan Experimental Station. Two treatments were set up in the experiment, and 6 fattening pigs in good growth condition and basically the same body weight were used for the experiment in each treatment.

[0019] In this experiment, one ingredient is concentrated feed for twins, and wheat bran and rice bran are rationed. The daily dosage of each pig is 1kg, 0.5kg, and 0.5kg respectively, and the cost is about 3.90 yuan. The total daily crude protein intake of each pig is 315g. , The total phosphorus intake is 23.5g.

[0020] The second batching is twin brand concentrate feed, combined with wild water spinach (85% water content), the daily dosage of each pig is 0.75kg and 1.75kg respectively, and the cost is about 2.85 yuan. In this feeding method, each pig has daily crude The total protein intake is 315g, and the total phosphorus intake is 17.5g.

[0021] A 2-mon...

Embodiment 2

[0024] The effect of the new breeding method was verified again with fattening pigs with an average weight of about 55kg in Wenchang Gesong Farm, Hainan. Two treatments were set up in the experiment, and 5 fattening pigs with good growth and basically the same body weight were selected for the experiment in each treatment.

[0025] In this experiment, one ingredient is Gesong brand concentrate feed, wheat bran and rice bran are rationed, and the daily dosage of each pig is 1kg, 0.5kg, and 0.5kg respectively. The cost is about $4.00. The total daily crude protein intake of each pig was 315g; the total phosphorus intake was 19.5g.

[0026] The second ingredient for processing is Songsong brand concentrated feed combined with sweet potato vines (73% water mass percentage), and the daily dosage of each pig is 0.75kg and 2.05kg respectively. The cost is about 2.80 yuan. In this feeding method, the total daily crude protein intake of each pig is 315g, and the total phosphorus int...

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Abstract

The invention discloses a culture method for reducing emission of nitrogen and phosphorus from pig raising and application. The method comprises the step of feeding growing and fattening pigs by adopting a manner of mixing green feed and fine feed, wherein the green feed provides 30-35 percent of the acceptable daily intake of crude protein every day for the feeding growing and fattening pigs, and the fine feed provides 65-70 percent of the acceptable daily intake of the crude protein every day for the feeding growing and fattening pigs. The fine feed is commercial pig feed, the green feed is made from sweet potato stems, melon vines or wild water spinach usually planted in the farmland, and the water content of the green feed is 80-90 percent by mass. The method can effectively reduce the content of main pollutants in waste and excrements, has a little influence on the weight increase of the growing and fattening pigs, realizes the pollution and emission reduction of the pig breeding industry, and can save the breeding cost and improve the economic benefit.

Description

technical field [0001] The invention belongs to the field of source control of pollutant discharge from pig raising, and in particular relates to a breeding method and application for reducing nitrogen and phosphorus discharge from pig raising. Background technique [0002] With the development of the economy and the improvement of people's living standards, the people's demand for pork is increasing. The year-on-year increase in market demand has made the previous small-scale pig farming by individual households gradually develop into large-scale and intensive pig farming. Pig sewage is more concentrated, and environmental pollution is more serious. At present, there are many treatment methods for pig pollution, but most of them stay at the terminal treatment method. This treatment method generally needs to consume a lot of manpower, material and financial resources, the treatment cost is high, and the effect is not very satisfactory. [0003] Large-scale pig farms mostly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K67/02
Inventor 许振成吴根义蔡信德丘锦荣贺德春
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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