Infectious animal diseases: the wildlife/livestock interface
Animal Science and Livestock Production · Livestock Selection Profitability of any individual...
Transcript of Animal Science and Livestock Production · Livestock Selection Profitability of any individual...
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Animal Science and Livestock Production
Shannon DillMaryland Cooperative Extension
Talbot County
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Agenda
What is Animal ScienceLivestock SelectionLivestock Management- Nutrition - Facilities- Health - Pastures
Activity
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What is Animal Science?
Refers to the total store of knowledge relative to the breeding, feeding, care and management of animals and the marketing and processing of animals and their products as gained through practical experience and research methods.
Ensminger
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Animal Use as Food
Meat – Beef, Pork, Lamb, Goat PoultryMilk – Cheese, Ice Cream, YogurtEggs – Pastries, Mayonnaise, Custards
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Animal By-Products
Bones – Button, glue, mineral supplement for livestock feed (Ca)Fat – Chemicals, salves, creams, dressings, lubricants, soaps, foodGlands – Medicines, food additivesCollagen – Glue, GelatinIntestinal & Stomach tissue – lunch meats, surgical sutures, strings for musical and sports instrumentsFertilizer
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Animal Use as Work
Cultivate landTransportationControl other animals (herding)Assist physically & Medically handicapped
BlindEpileptic & Diabetic
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Other Animal Uses
Hides – LeatherHair – Wool, mohair, fiberLab Animals – Mice, rats, guinea pigs etc.Pets
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Future of Animal Science
Embryo Transplant – can produce 20 calves from one cow per yearCloning – using an animal cell to grow an identical duplicate animal??????????????
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Livestock Enterprises and Management
Numerous livestock enterprisesTraditional ExoticPurebred/CrossbredRecreational
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Species
Cattle, HorsesSheep, Goats, SwinePoultry, Rabbits
Different Space RequirementsDifferent Nutrition and ManagementMany co-exist well
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Beef
Great for the Part-timeLabor and facilities can be low costLand is required 1-5 acres per animalReturns can be low and seasonalEnterprises
Freezer beef, feeders, purebred, contract heifers
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Sheep
Low initial investmentLow labor – expect when lambingLittle investmentMeat/WoolNot a huge market
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Rabbits
Small acreage requirementsMinimal cash outlaySmall market – mostly pets and show
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Poultry
Small land requirementsMeat/EggsSmall amount of laborEnterprises – Pastured poultry, specialty birds
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Goats
Projects, Milk, Meat, FiberEthnic PopulationsDairy – High laborShould explore markets
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Swine
Low acreage – Higher maintenanceMore management than – sheep, cattle or goatsMore investment in housing, shelter and fencingDo not utilize forage
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Horse
Facility and acreage requirementsHigher acreage – higher maintenanceExpense to purchaseEnterprises – training, boarding, lessons, breeding
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Livestock Selection
Profitability of any individual animal or of a herd or flock of animals is determined by
Type or individuality based on the ability to produce high-quality products for a tough marketPerformance or efficiency of production which is the ability to utilize feed efficiently, in producing meat, milk, wool or power.
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Bases of Selection
Selection based onType and individualityPedigreeShow-ring winningsProduction testing
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Bases of Selection
Type or individuality Selecting those animals that most closely approach an ideal or standard of perfection and culling out those that fall short.
PedigreeUsed in most purebred operationsBased on performance of ancestors
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Bases of Selection
Show ring winningsImplies the animals that have placed well in one or more shows are superior.
ProductionGenerally look at economics such as body type and feed utilizationPerformance testing, progeny testing
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Feeding Livestock
Relative Importance of Principle Livestock Feeds
0 10 20 30 40 50
Pasture & Grazing
Corn
Hay
High-Protein Feeds
Other Grains
Silage
Other Grains
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Feed Quality
Quality of feed affects its value for animal nutrition.
Quality factors include palatability and nutrient content.
Palatability refers to how well the animal will accept feed.
Improper harvesting or handling will reduce quality.
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Feed Quality
If an animal does not find a feed palatable it will not eat enough, make good gains, grow properly or produce meat, milk or eggs.
Feeds on produced on well fertilized soils will produce feed, especially roughages, that is of a higher quality.
Vitamins, amino acid content and minerals will also be affected by soil type.
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Digestion
Monogastric (simple stomach)Pig, Dog, Human
Avain (poultry) – GizardChicken, Turkey, Duck
Polygastric (ruminants)Cow, Sheep, Goat
Pseudo-ruminants (cecum)Horse, Rabbits, Hamster
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Feeding Goals
MaintenanceGrowthFinishingReproductionWorkAge
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Nutritive NeedsEnergy
Carbohydrates, FatsProteinMineral
MacroSalt, Calcium, Phosphorous, Magnesium, Potassium, Sulfur
MicroChromium, Cobalt, Copper, Fluorine, Iodine, Iron, Manganese etc
Vitamin
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Nutritive Needs
Most ImportantWATER
Roughages (Forages)Bulk feeds that are low in weight per unit of volume, >18% curde fiber, low energyHayPastureSilageCrop Residues
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What is forage?
Vegetable matter in a fresh, dried, or ensiled state.What can you do with forage?
- graze it- machine harvest and store it- it’s animal feed
Forage allows you to raise an agricultural crop on land where other crops cannot be produced.
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Grasses
TimothyOrchard GrassKentucky BlueFescue (endophyte free)
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Legumes
White Clover AlfalfaLadino CloverRed Clover
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Mixing Forage Species
Consider the traits of each species.Aggressive vs PassiveMaturity dates: early vs late
Other traits that can be utilized:N fixation heat tolerancefast germination wet tolerancesod formation palatabilitysummer dormancy hay or grazinglife span fertility needs
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Forage Establishment
Plan at least 1-year ahead.Planning includes soil testing.Don’t be cheap with fertilizer, limestone, and seed.Do proper field preparation.Select the right forage species and best available varieties of forage.Need good seed/soil contact.Don’t bury seed too deep.
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Harvesting Forages
Making quality forage is an art.- need to know your forage species- keep on top of the weather- have flexible production options- have timely access to equipment- have equipment in good working order- have healthy forage and few weeds- have some luck!
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Forage Storage Losses
Uncovered bales stored outsideHay baled too wetBales stacked in contact with the groundHoles in plastic bags and tubes, or leaky silosPoorly packed and uncovered trenches
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Evaluating Hay Quality
LeafinessColorForeign MaterialOdor and Condition
ACTIVITY
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Hay Quality is Important
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Why Manage Pastures?
Pastures are profitablegrazed forage is good, cheap feed
pastures are inexpensive to develop and maintain
animals do the harvesting, therefore there is a reduction in the need for machine harvesting and forage handling
while on pasture, animals spread manure in the field, reducing hauling
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Protects surface and groundwater from nutrient pollution
acts as a filler to screen out and traps soil particles which contain nutrients such as N and P
the nutrients are then utilized by the pasture plants once these nutrients have moved into the root zone of the soil
Why Manage Pastures?
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Why Manage Pastures?
Reduces soil erosionthe top growth of pasture plants lessons the impact of rain drops on the soil surface and also slows down the surface runoff of water across the field
pasture plant root systems bind the soil together, thereby holding it in place
most pastures keep the soil covered year around, unlike annual crops
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Improves forage yield and qualityplants that are maintained at the optimum fertility level and are not stressed by pests or by poor grazing management will be more productive
healthy, productive plants will provide a quality product
healthy plants will have a higher nutritional value
Why Manage Pastures?
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Why Manage Pastures?
Reduces weeds and improves estheticsweeds are opportunistic; they will move rapidly into an open area or an area occupied by a weak plant
weeds cannot gain a foothold in a field with vigorously growing plants
a clean, weed free pasture reflects well on your farm manage and how people passing by view your farm
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Maintaining Pastures
RotateClipIrrigateDrag Manure
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Protecting pasture plant root reserves and maintaining plants in a vegetative state are keys to a good pasture.Overgrazing reduces root reserves which shrinks the root system and leads to fewer leaves being produced; plants also take longer to recover from grazing.Under grazing reduces quality and yield as over-mature plants become less vigorous and more fibrous.
Grazing Management
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Forage Re-Growth
Slow to recover at first
Rapid growth after recovery
Slow after rapid growth period
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How Grazing Affects Root Growth
% Leaf Vol. % RootRemoved Growth Stoppage
10%…………………………………………………………….0%20%…………………………………………………………….0%30%…………………………………………………………….0%40%…………………………………………………………….0%50%…………………………………………………………..2-4%60%…………………………………………………………...50%70%…………………………………………………………...78%80%…………………………………………………………...80%90%………………………………………………………….100%All root growth stops for 12 days with 80% removal & 18 days with 90% removal. When 60 % is removed, only half of the roots stop growing.
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A Good Grazing Rule of Thumb
Take half -----------------------------Leave half
In the long run, the animals will have more forage to graze.
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Why Timely Mowing?
Mowing prevents plants from becoming over mature.
Vegetative plants are more palatable and more nutritious.
Mowing helps to control weeds.
Flash grazing can work in place of mowing to help reduce excess forage in paddocks.
Harvesting excess forage for hay is a good way to fully utilize forage resources.
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Why Control Weeds?
Some weeds have been declared illegal noxious weeds by the State.
Weeds look bad, they reflect poorly on your management.
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Why Control Weeds?Weeds will:
Reduce the stand of desirable plants.
Reduce overall quality and yield.
Reduce overall animal yield.
Some are poisonous, or can affect the animal product.
Seeds are spread through manure.
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Weed Management
Cultural Controlmowinggrazingover seedingimproved fertility
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Chemical Weed ControlGrazing Restrictions
Ally…………………..none2,4-D…………………milk cows, 7 days+Crossbow……………milk cows, 14 days+Banvel……………….milk cows, 7 days+Roundup…………….livestock, 8 weeksSpike…………………noneStinger……………….none
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We all want to have lush, green pastures.
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Planning A Pasture SystemSources of Info and Help
Resourcessoil survey mapsoil capability assessmentaerial farm mapwalking the farm
AssistanceCooperative ExtensionN.R.C.SF.S.A.Farming Supply Companies
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Basic Types of Pastures
Continuousanimals are allowed to graze in the pasture for extended periods of time
animals often do well in this system since they are allowed to choose the plants they eat
plants are often overgrazed and undergrazed in this system
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Continuous Grazing
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Basic Types of Pastures
Rotationalanimals are allowed to graze for only a limited period of time and animals are moved when existing forage has been removed
intensive rotational grazing systems subdivide pastures into paddocks and use high stocking rates where animals are forced to eat all forages
this system is most efficient
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Rotational Grazing
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Intensive Rotational Grazing
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Basic Types of Pastures
Deferred Grazingforage is allowed to accumulate in a pasture for grazing at a later date
stockpiled tall fescue is an exampleStrip Grazing
high stocking rate of animals are put into a pasture for a limited periodusually involves a specially planted crop typically an annual species i.e. rape, turnips, or summer grasses
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Strip Grazing
previously grazedpaddock
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Co-grazing
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Rotating Pastures
BenefitsFeeding less grain and hayReduce pest populationsSlow soil erosionAllow daily exercise
BE OBSERVANT and watch your pastures
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Setting Up A Pasture SystemRecommendations
Develop a 5 year farm/business plan
You need to plan aheadplan for when fields need to be renovated
Use existing resources whenever possible (fences, water, forage crops)
Establish crops according to your plan
Existing pastures can be renovated later if needed now for grazing
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Setting Up A Pasture SystemRecommendations
Put your money into good perimeter fence. this will help to keep predators out and your animals in.
Map out farm, give each field own identity
Soil test fields individuallyeach has its own personality, so treat it accordingly
Develop a practical watering systemcommon problem for manythere are many factors to consider (costs, environmental, system)
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Setting Up A Pasture SystemRecommendations
Create a sacrificial areathis will protect your pastures
Estimate the carrying capacity of your pasturesimpacts on the number of animals and paddocks (rotational)
Calculate number of paddocks needed and days/paddock (rotational)Temporary fence works well to form paddocks
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Sacrifice Area
This is a part of your pasture system that, just as it sounds, is permitted to become trashed.
What is important here is that the trashing is confined to one small area where the mess can be controlled.
Animals are kept in here during periods (i.e. wet) when it is not fit to put animals in the pasture.
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Paddocks
Sacrifice areaTurn out lots
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PaddocksIn a rotational grazing system pastures are divided up into smaller units within the pasture
these smaller units are called paddocks.
In some smaller operations, permanent fencing is used to divide up the pasture.
Temporary electric fence is a low cost, effective method of creating paddocks.
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Fencing
ConsiderationsSafetyEfficiencyCostAesthetics
Fence height should be a minimum of 5 feet.
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Fencing MaterialsWood Fencing
Different types (3 rail, spilt rail)Low MaintenanceExpensive (@ $5 per linear foot)20-25 years life expectancy
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Fencing Materials
Wire FencingDifferent Types (board and wire, high tensile, electric, V-mesh)Less expensiveMaintenance is low to mediumExtended life expectancy
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Fencing Materials
OtherPVCPlastic grid/meshElectric Tape
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Facility Requirements
Things to think aboutWaterAir/VentilationSpace RequirementsShelter
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Animal Behavior
CausesGeneticSimple learning (training or experience)
HabituationConditioningReasoning, InsightImprinting, Socialization
Complex learning (intelligence)
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Animal Health and Disease Prevention
Signs of Good HealthContentmentAlertnessEatingSleek CoatBright eyes and pink eye membranesNormal feces and urineNormal Temperature, pulse and breathing
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Health Considerations
InfectiousCommunicability or ContagiousnessParasitesPoisonous plantsLivestock speciesEtc.
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First Aid Kit
Gauze padsCotton RollCling Wrap (vet wrap)Adhesive WrapSharp Scissors
ThermometerSurgical ScrubGlovesFlashlightStethoscopeSyringe
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Thank You!
See you next week
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References
Animal Science by EnsmingerTerry Poole, Extension Educator Fredrick County