Livestock influences on Agricultural environments

Agricultural Biotechnology and Livestock in Agricultural Environments: Comprehensive Notes

  • Developed vs. developing countries (basic classification and examples)

    • Developed (industrialized) countries are identified by a high level of economic development (FAO reference):

    • North America: Canada, United States

    • Europe: Belgium, Denmark, France, Germany, Greece, Iceland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Turkey, United Kingdom

    • Oceania: Australia, New Zealand

    • Asia: Israel, Japan, Hong Kong, Singapore, South Korea, Taiwan

    • Africa: South Africa

    • Developing countries are broadly classified as subsistence and primitive, with ranges from relatively poor with higher living standards to least developed where conditions are extremely poor.

    • (Note: The slide provides a table labeled as “Table of Developed Countries” and lists regions, indicating the geographic spread of development status.)

  • Three levels of agricultural development (Developed – Subsistence – Primitive)

    Three levels of agricultural development (Developed – Subsistence – Primitive)

    • Developed

      • <10\% total population actively engaged in farming

      • Highly specialized and mechanized agriculture

      • High per capita income and literacy rate

    • Primitive

      • >90\% total population actively engaged in farming

      • General scarcity of food

      • Not mechanized; almost all hand labor

      • Extremely low per capita income; very few literate individuals

    • Subsistence

      • \sim 50\% total population actively engaged in farming

      • Each farm produces what it consumes with a small surplus

      • Much hand and draft animal labor

      • Low per capita income and literacy rate

  • Three levels of agricultural development (reiterated for understanding)

    • Developed: as above (machine-based, high income/literacy)

    • Subsistence: as above

    • Primitive: as above

  • Link between agricultural systems and livestock systems

    • Livestock systems depend on the underlying agricultural system of a region.

    • An agricultural system is determined by multiple factors, including:

    • Climate, topography, soil type

    • Socioeconomic issues (markets, institutions, culture)

    • This leads to different livestock production patterns across regions.

  • Factors determining agricultural systems

    • Climate (rainfall) interacts with other factors to shape practices.

    • Topography and soil types influence cropping and pasture options.

    • Socioeconomic factors (markets, technology access, institutions) determine intensity and efficiency of production.

  • Influence of climate (rainfall) on agricultural systems (Damron, 6th edition; Table 4-2)

    • Primitive agriculture

    • Low technology and heavy reliance on household labor to produce a small crop output.

    • No chemicals, fertilizers, pesticides, or modern technology.

    • Subsistence agriculture

    • Farmers grow crops to meet the needs of themselves and their families on smallholdings.

    • Developed agriculture

    • Farmers raise products for profit; higher input use and market orientation.

  • Nomadism and Transhumance (pastoral mobility)

    • Nomadism: strategic movement of people without a permanent dwelling in accordance with the animals they herd or hunt; movement responds to feed availability.

    • Transhumance (pastoralism): movement of grazing animals to exploit shifting water resources and grazing conditions; may involve cattle, sheep, goats, camels, yaks, horses, reindeer.

    • Common regions: deserts, steppes, savannahs with limited rainfall; also observed in some developed countries (e.g., Italy, Germany) in certain contexts.

    • FAO reference: pastoralism supports livelihoods and can contribute to peace and stability through mobility and resource use.

  • Slash-and-burn (shifting cultivation)

    • Farmers clear a small plot of land, cultivate it, and later move to another plot once fertility declines.

    • Common crops: corn, rice, bananas, sweet potatoes.

    • Livestock may be present but are not the primary focus of this system.

    • Visuals and examples available via referenced sources.

  • Rudimentary sedentary tillage

    • Found in areas previously devoted to slash-and-burn; movement to a single location over time.

    • Focuses on subsistence agriculture.

    • Common crops: cereal grains (sorghum, maize, millets), tobacco, tubers (cassava, potatoes).

    • Some grazing animals used for milk, urine, and manure.

    • Geographic zones: tropical and some temperate regions in developing areas (SE Asia, Sub-Saharan Africa).

  • Subsistence crop and livestock farming

    • Primarily subsistence-focused with local consumption needs.

    • Livestock: sheep, cows, goats, chickens; milk can be more important than meat.

    • Crops: root crops, sorghum, rice, millet.

    • Geographic zones: poorer regions of Europe, Sub-Saharan Africa, Southeast Asia.

    • Credits: Depecol et al. (various authors) as cited.

  • Aquaculture (as a separate system)

    • Aquaculture focuses on aquatic production for human consumption in marine settings, freshwater ponds, and rice paddies.

    • Primary products: fish, lobster, crab, shrimp, seaweed, and other aquatic organisms.

    • Common locations: Asia-Pacific dominates; U.S. Mississippi is a notable aquaculture state.

  • Paddy rice farming (integrated with aquaculture)

    • Paddy rice farms are often coupled with aquaculture (rice and aquatic species such as fish/shrimp) for consumption, crop support, or both.

    • Ducks may be included in paddies.

    • Surrounding crops: cash crops like tea and sugarcane may be grown around paddies.

    • Typical geography: tropical and temperate regions such as East Asia (China, Japan) and South Asia (India).

  • Ranching

    • Commercial use of dry areas for raising and breeding livestock for products (meat, leather, wool) for market sale.

    • Common species: cattle, sheep; occasional goats; horses often used for ranch operations.

    • Regions: desert, semi-arid, temperate zones of the western U.S., Mexico, Argentina.

  • Commercial livestock finishing or feedlots

    • Focus: buy, house, and feed livestock on energy-dense diets to promote rapid growth and desirable fat cover for slaughter.

    • Often integrated with crop/livestock farming to secure feed resources.

    • Typical species: pigs, cows, sheep.

    • Major locations: developed countries; notable activity in the U.S., with production also in Brazil, Argentina, Australia, and parts of Europe.

  • Commercial dairy farming

    • Involves large-scale milking and dairy production.

    • Primary milking animals: cows; also goats, sheep, buffalo in some regions.

    • Common housing: drylots or factory-style farms with limited outdoor access.

    • Geographic emphasis: remote areas in New Zealand; pastures in Wisconsin (U.S.).

  • Commercial grain farming

    • Large-scale grain production for profit.

    • Primary crops: wheat, barley, oats, corn.

    • Livestock use: stocker cattle, lambs, cows/calves may graze on grain pastures or utilize crop residues.

    • Geographic zones: arid and temperate regions; North America; parts of Eastern Europe (e.g., Ukraine); Southern Hemisphere (Australia, Argentina).

  • Commercial plantations

    • Large land holdings focused on a single crop for commercial markets.

    • Crops: fruits, coffee/tea, spices, sugar, vegetable oils, tobacco.

    • Little to no animal use.

    • Geographic zones: developing countries in South/Central America, Indonesia, Caribbean, India, Sri Lanka, West Africa.

  • Urban agriculture and market gardening

    • Small-scale commercial farming in urban settings; crop sales at local markets.

    • Market gardening focuses on non-tropical fruits, vegetables, vine crops, and flowers.

    • Urban agriculture integrates farming practices into urban environments (backyards, rooftops, roadsides, public areas).

    • Livestock examples: poultry, rabbits, goats, sheep, cattle, fish, bees.

    • Geographic emphasis: urban areas in the United States and Europe (e.g., Chicago, New York).

  • Livestock waste impacts on the environment

    • Primary goal: prevent surface and groundwater pollution.

    • Waste must be held until it can be properly disposed of on land.

    • Amount of waste produced depends on ration fed, size, and age of the animal.

    • Key factors affecting manure nutrient content: time in storage, methods of treatment, bedding, and water content in manure.

  • Reducing livestock waste impacts (general approaches)

    • Selecting an appropriate manure handling system.

    • Considerations include: kind of animal, size/type of operation, budget, climate (rainfall, temperature, wind direction), soil type/terrain, crops grown, federal/state/local laws, and neighbors.

    • Manure handling options include solids collection or liquid extraction; most waste is eventually spread on land.

    • In large confinement operations, lagoons may be used; all systems should follow EPA regulations and recommendations.

  • Federal and State laws regulating livestock waste production and cleanup

    • Federal laws (examples listed in slides):

    • Federal Water Quality Act of 1965

    • Reuse Act of 1899

    • Solid Waste Disposal Act of 1965

    • Federal Clean Air Act

    • State laws: state environmental protection agency (EPA) equivalents and nuisance laws (addresses odors, dust, chemicals, water pollution, animal noise)

    • Note: EPA stands for Environmental Protection Agency.

  • Water pollutants monitored by EPA (typical indicators)

    • Biochemical oxygen demand (BOD)

    • Fecal coliform

    • Fecal Streptococcus

    • Suspended solids

    • Phosphorus

    • Ammonia

  • Methods of handling livestock wastes to reduce environmental pollution (general strategies)

    • Selecting a manure handling system based on animal type, operation size, budget, climate, soil, crops, and laws.

    • Manure can be collected as solids or dissolved into a liquid; most waste is spread on land; lagoons may be used in large operations.

    • Lagoons rely on bacteria; can be aerobic (with oxygen) or anaerobic (no oxygen).

    • Aerobic lagoons: shallower, less odor, require more area.

    • Anaerobic lagoons: do not require oxygen, handle larger volumes with lower ongoing costs.

  • Liquid manure systems and storage (detailed concepts)

    • Pits and storage basins (above or below ground).

    • Lagoons (aerobic vs anaerobic) and their treatment processes.

    • Regular recharging with fresh water is sometimes used in lagoon management.

    • Liquid manure pumps unload contents to fields for application.

  • Runoff control for feedlots (specifics used to minimize water pollution)

    • Diversion: divert runoff water away from feedlots using drainage channels and terraces.

    • Debris basins: capture runoff, allowing solids to settle and liquids to move on.

    • Detention ponds: temporary storage for evaporation and treatment.

    • Holding ponds: used for storage and possible subsequent irrigation use.

  • Disposal options for waste water and manure after collection

    • Holding ponds can be pumped or allowed to evaporate; treated water may be reused for irrigation.

  • Odors from livestock waste and odor control options

    • Masking agents: cover odors with a different smell (one of the most effective categories).

    • Counteractants: neutralize odor (less effective than masking agents).

    • Deodorants: kill odor-causing bacteria (less effective than masking agents).

    • Digestive deodorants: bacteria-based products that chemically help break down odorous compounds (least effective).

  • Handling and disposal of dead animals

    • Disposal should occur within 24 to 48 hours to minimize disease transmission.

    • Approved methods vary by state; disposal plants are less common due to cost and farm numbers, with liability concerns for air/water pollution.

    • Incineration: burning is sometimes used but can be costly and produce odors.

    • Burial: typically at least four feet below the surface with four feet of earth cover; avoid standing water in the excavation.

    • Disposal pits: suitable for smaller animals; may involve added chemicals for odor control and faster decomposition.

    • Composting: more common for poultry and swine; usually built on a concrete floor with a roofed bin; cover materials include sawdust, wood chips, corn cobs, shavings, or poultry litter (poultry manure with bedding).

    • Poultry litter: poultry manure with bedding used for birds; depicted in poultry-litter examples.

  • What’s next / Preparatory guidance for students (summary of upcoming activities)

    • Before class: review Chapters 1, 4 and 11; review lecture slides.

    • MindTap review opens Sept 5; due Sept 10.

    • In-class lecture on Sept 9; work on and submit the debate by end of class time (in-class group work) to be eligible for points.

    • Next lecture on Sept 11; Exam 1 will be in person on paper, with a 75-minute time limit.

  • Pet Debate work – Agriculture systems slides

    • Students will work with groups on agriculture systems slides as part of the debate preparation.

  • Quick recall of key terms and cross-links

    • Agricultural biotechnology: genetic engineering, embryo transfer, CRISPR; regulatory oversight by US agencies (USDA, FDA, EPA).

    • Agricultural development levels and their characteristics: percent of population involved in farming, mechanization, income, literacy.

    • Livestock systems as a function of agricultural systems and climate; mobility strategies (nomadism, transhumance); shifting cultivation vs. sedentary farming.

    • Aquaculture and paddy rice farming as integrated and specialized systems.

    • Large-scale commercial production systems (ranching, feedlots, commercial dairy, grain farming, plantations) vs. subsistence systems.

    • Waste management and regulatory landscape (EPA monitoring, federal/state acts) and practical approaches to reduce nutrient leakage and odor.

    • Practical disposal of dead animals and management of poultry litter.

  • Connections to broader principles and real-world relevance

    • The classification of development levels helps explain disparities in technology adoption, efficiency, and environmental impact between regions.

    • Understanding livestock waste management has direct implications for water quality, air quality, and community health in both rural and urban-adjacent farming areas.

    • Integrated systems (e.g., paddy rice farming with aquaculture) illustrate sustainable intensification opportunities and potential risk of nutrient overload if not managed properly.

    • Regulatory frameworks shape farm practices and innovation (e.g., biotechnology approvals, waste management standards).

  • Ethical, philosophical, and practical implications

    • Balancing productivity with environmental stewardship and community impacts.

    • Equity in access to modern biotechnologies and waste-management technologies across regions.

    • The trade-offs of large-scale farming (economic efficiency vs. ecological footprints).

  • Key numerical references (LaTeX-formatted whenever appropriate)

    • Developed agriculture: < 10\% of population engaged in farming.

    • Primitive agriculture: > 90\% of population engaged in farming.

    • Subsistence agriculture: \sim 50\% of population engaged in farming.

    • Exam duration: 75\text{ minutes}.