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51 Cards in this Set
- Front
- Back
Months of winter lambing
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Nov - Feb
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Months of spring lambing
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March - early May
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Months of fall lambing
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Sept - early Nov.
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4 data bits concerning feeder lambs
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Feed out in fall & winter; use spring born lambs, use fall pastures and grain gleaning, finish with grain
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Advantages of winter lambing
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Easter Holiday market (100-125lbs at 4-6months)
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Disadvantages of winter lambing
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covered facilities required, high grain diet
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Advantages of spring lambing
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Barn & pasture lambing, lambing % is the highest, forage-based system, higher profit margin
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Disadvantages of spring lambing
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Predators, insufficient grass in summer, lower prices in fall market
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Advantages of fall lambing
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Use fall forages, capture high-priced winter & spring markets, Easter market: 125lb lambs
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Disadvantages of fall lambing
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In November need stored feeds, try to market Easter lambs before too much finish (fat), normal conception rates and lambing rates are lower (conception: 50-60%, lambing 120%)
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# of ewes on full-time farms
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>500; per Pelzer, probably need 1000
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Avg net income per ewe
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$30
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Accelerated lambing season
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lamb 5x in 3 years or 3x in 2 years; controlled via hormones
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2 market reasons for decline of sheep industry
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low per capita consumption, cheap wool via world markets
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6 Production reasons for decline of sheep industry
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predation, anthelmintic resistance, lack of land, lack of labor, lack of market, expense of slaughtering
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Western Ewe
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Suffolk x Rambouillet
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out-of-season breeders & multiple births
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Dorset x Finnsheep
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benefit of purebred rams with crossbred ewes
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3-way cross and hybrid vigor
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What breed of ram is used to sire the majority of market lambs?
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Dorset
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3 common breeds of rams
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Suffolk, Hampshire, Dorset
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Advantages of crossbred ewes
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More available, less expensive, higher lambing %, lambs with hybrid vigor (survival), wean more pounds of lamb
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5 main breeds of dairy goats
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Toggenburg, Alpine, Nubian, Saanen, La Mancha
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Average production of dairy goats
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3.5 quarts per day, 305 day lactation
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Disadvantages of dairy goats
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Need Grade A certification in order to sell milk and cheese; costs thousands
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Fiber goats
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Angora
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Pet goats
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Pygmy, any breed
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Meat goats
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Boer and male dairy goats
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management at 6 weeks before breeding
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trim feet, check udders, determine # of rams needed, palpate testicles & scrotal circumference, serology for Brucella ovis, BCS, shear rams, vax for Chlamydia and Campylobacter, clostridial booster to ewe lambs
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management at 2 weeks before breeding
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treat ewes & rams for internal parasites (FAMACHA), flush ewes, place ewes on high-quality pasture
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management at breeding
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marking harness on rams, divide flock into single-ram units, change rams at least q 2 weeks
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How long is the breeding season?
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60 days
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Management from breeding to 6 weeks BEFORE lambing
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Separate ewe lambs from ewes, thin ewes 1-1.5lbs grain per head per day, preg u/s 35 days into gestation
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management 6 weeks before lambing
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Feed 0.5lb of grain per head per day to prevent pregnancy toxemia; when needed, feed 4 lbs of hay too; ensure plenty of trough space
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management at 3-4 weeks before lambing
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Shear wool from head, udder, perineal area of pregnant ewes; vax ewes w/ Clostridium C, D, T; deworm ewes, vax for PI3 w/ intranasal; +/- selenium injection; every week, check ewes for impending parturition and separate them, prep lambing jugs
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protocol for ewes w/in week before parturition
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increase grain to 1lb per day, observe for pregnancy toxemia
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Sign of onset of pregnancy toxemia
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sluggish
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Tx for pregnancy toxemia
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propylene glycol
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General periparturient management (ewes & lambs)
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Check ewes 4x per day, move ewe & lambs to lambing jug?, strip milk from teats, make sure lambs nurse w/in 30 minutes of birth, dip navels, check on lambs/ewes several times per day, Vit E & Se?, feed ewe
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T/F: Ewes should be checked once in the middle of the night, because they often lamb then.
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Checking ewes during the night may stimulate ewes to lamb 3-4 hours earlier than they normally would.
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Why should milk be stripped from teats before lamb begins to nurse?
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check for colostrum
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If lambs fail to nurse w/in 30 minutes of birth, what should you do?
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Tube and give 2-4 oz of colostrum
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How much colostrum should lambs receive within the first 40 hours of life?
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20mls/lb
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Average weight of newborn lambs
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8-10lbs
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What should navels be dipped in?
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iodine or chlorhexidine
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Biggest causes of neonatal lamb mortality
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starvation, hypothermia, trauma
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If selenium is a problem, how much should be administered?
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0.25mg/10lbs body weight
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Best means to prevent selenium deficiency?
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Feed selenium to ewes via a good quality mineral
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What should a ewe be fed on the day of parturition?
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good quality hay only and fresh water
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When can an ewe be fed grain after parturition?
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2nd day: per nursing lamb: 1lb grain (15% CP) and 5lbs
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spring lambing %
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150% or more
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fall lambing %
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120%
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