Cattle rearing is very popular all over the world. Animals are reared for mainly two reasons, milk or meat. It can be said that cattle rearing affects the environment in a positive as well as negative way. ADVANTAGES 1. Manure can be use to generate electricity Converting cow manure into renewable energy prevents harmful methane from reaching the atmosphere. This is important because methane on dairy farms cause majority of agricultural greenhouse gas emissions. Methane can be use to create: 1. Renewable electricity
2. Renewable vehicle fuel (bio-methane)
3. Renewable natural gas that can injected into existing pipelines for a wide range of uses (heating, power plants). Process Methane is collected in large tanks or storage ponds, where is trapped and transformed into bio gas. This resulting bio gas is burned to generate electricity or refined further to produce bio methane, which is a fuel comparable to natural gas. The remaining solid matter is a valuable soil humus and the liquid becomes an easily applied fertilizer.
2. Manure can be used as fertilizers. Maure contains most elements that plants need to grow, including potassium and micronutrients. However it is manure's organic carbon that provides it's potential environmental value. Manure if properly applied to soil: 1. Increases soil carbon and reduces atmospheric carbon levels.
2. Reduces soil erosion and runoff. Manure reduces raindrop impact by attaching soil particles and preventing them from moving off site with water run off.
3. Reduce nitrate leaching.
4. Reduce energy demands for Natural gas.
Sample of Soil Containing Organic Matter 3. Benifits the environment through grazing Grazing is a type of feeding in which herbivores feed on plants (such as grass) and also other unicellular autrophs (such as algae). Grazing promotes nutrients dense soil and stimulates the growth of different plants , which increases forage production. The hoof action of the livestock promotes growth. As the cow eats a seed from a plant falls and the hoof tramples it into the ground as it moves, and this allows the grass to continue to germinate.
Disadvantages
1. Air Pollution from Waste “Piling up too much ‘stuff’ in one place causes problems. If you spread out the animals and let manure lay where it falls in a pasture, it doesn’t bother anyone very much. But if you start collecting it, fushing it, spreading and spraying it around—all normal practices in confnement operations—it becomes air pollution
2. Manure may cause Water Pollution Nitrogen and phosphorus can aid plant growth when applied in reasonable amounts, but are dangerous in high concentrations. If these nutrients enter a water body example lake, eutrophication may accour. This will result in water organisms not been able to get oxygen and dieing.
References
1."Manure Nutrition Management 8647" last modified January 21,2008
2."Manure as a source of crop nutrients and soil amendment 8913" last modified November 1, 2007
3."A student guide to global climate change"
4. Dr. John Ikerd
University of Missouri 2001 5. http://sbt.blob.core.windows.net/storyboards/quenton4/the-eutrophication-process.png
Killing cows is against to my decisions and to my religion.
Cow is my vehicle.
Cow is sacred as my knowledge.
If you kill cows I will burn you from my third eye.
Allah can't say that ,somtimes killing cows is good.
I will fight and defeat allah the dumb god.
So,don't kill cows.
This is a message for whole universe.
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