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Mitigation of poultry manure pollution in the Fraser Valley Mpyisi, Edson Rurangwa
Abstract
Intensive poultry production in the lower Fraser Valley of British Columbia has resulted in large quantities of poultry manure being spread on limited land space. This manure is spread on land situated above the Abbotsford aquifer. Due to the high amount of nitrogen and phosphorus present in poultry manure, there is a danger of these nutrients leaching into the groundwater of the aquifer as nitrates. High levels of nitrates in drinking water have been linked to various health hazards such as Methemoglobinaemia, stomach cancer, and gastric cancer. The leaching problem is further compounded by the fact that the region has porous soils, a high water table, and very high annual rainfall. This problem was addressed by analyzing several dietary treatments having varying levels of crude protein from a high of 25% CP (crude protein) to a low of 18% CP and supplemented with the commercial amino acids L-LYS , DL-MET , L-THR, and L-TRY . A linear programming model was used to determine the least cost diet from the various dietary treatments. The most efficient dietary treatment was then identified by Manure disposal options such as storage, land application, and transportation were also considered along with their associated costs. Linear programming was used to identify the least cost manure disposal strategy complying with British Columbia environmental regulations by using a combination of the three options. The results from the two models above were then combined to identify the optimum manure management strategy for a poultry farm in the Fraser valley complying with environmental regulations. The results indicate that diets containing lower levels of crude protein and supplemented with amino acids costs less than those containing higher levels of crude protein. These diets perform better because the nitrogen in the protein is utilized more efficiently thereby resulting in less nitrogen excretion in the manure. Manure that contains low amounts of nitrogen costs less to dispose than that having high amounts of nitrogen. Use of diets containing low levels of crude protein and supplementing them with commercial amino acids can lower the costs of poultry farmers significantly while complying with environmental regulations.
Item Metadata
Title |
Mitigation of poultry manure pollution in the Fraser Valley
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1996
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Description |
Intensive poultry production in the lower Fraser Valley of British Columbia has
resulted in large quantities of poultry manure being spread on limited land space. This
manure is spread on land situated above the Abbotsford aquifer. Due to the high amount
of nitrogen and phosphorus present in poultry manure, there is a danger of these nutrients
leaching into the groundwater of the aquifer as nitrates. High levels of nitrates in drinking
water have been linked to various health hazards such as Methemoglobinaemia, stomach
cancer, and gastric cancer. The leaching problem is further compounded by the fact that
the region has porous soils, a high water table, and very high annual rainfall.
This problem was addressed by analyzing several dietary treatments having varying
levels of crude protein from a high of 25% CP (crude protein) to a low of 18% CP and
supplemented with the commercial amino acids L-LYS , DL-MET , L-THR, and L-TRY . A
linear programming model was used to determine the least cost diet from the various
dietary treatments. The most efficient dietary treatment was then identified by Manure
disposal options such as storage, land application, and transportation were also considered
along with their associated costs. Linear programming was used to identify the least cost
manure disposal strategy complying with British Columbia environmental regulations by
using a combination of the three options. The results from the two models above were
then combined to identify the optimum manure management strategy for a poultry farm in
the Fraser valley complying with environmental regulations.
The results indicate that diets containing lower levels of crude protein and
supplemented with amino acids costs less than those containing higher levels of crude protein. These diets perform better because the nitrogen in the protein is utilized more
efficiently thereby resulting in less nitrogen excretion in the manure. Manure that contains
low amounts of nitrogen costs less to dispose than that having high amounts of nitrogen.
Use of diets containing low levels of crude protein and supplementing them with
commercial amino acids can lower the costs of poultry farmers significantly while
complying with environmental regulations.
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Extent |
6181553 bytes
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Geographic Location | |
Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-02-10
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0086972
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1996-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.