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51 Cards in this Set

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