ANSC Dairy lab
Terms
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- total milk production breed rank
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Holstein-Friesian
Ayrshire
Jersey
Guernsey
Brown Swiss - % fat in milk breed rank
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Jersey
Guernsey
Brown Swiss
Ayrshire
Holstein-Friesian - milk composition
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87.5% water, 12.5% solids
of solids:
3.8% fat (butterfat)
3.5% Protein
4.5% Carbohydrate (lactose)
0.7% Minerals (Ca and P) -
General Production:
calf birth weights
calving interval
longevity -
calf birth weights: 50-95 lbs
Calving interval: 13.1 mos
longevity: 3.5 lactations (5-6 yrs old) - reasons for culling dairy cow (5)
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1. reproductive failure
2. mastitis
3. low milk yield
4. feet and let unsoundness
5. disease and injury - all breed milk yield
- 16,871 lbs
- type score
- 80 out of 100
-
general trends
what has happened to total yearly MILK? -
# herds decreasing
avg. herd size increasing
total # cows in US decreasing
milk production per cow has been increasing
= total yearly milk stayed constant - Ayrshire (color, mature weight, origin, lbs milk, % butterfat)
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light to deep cherry red.
dark eyes and muzzle
horned, usually dehorned
mature: 1200 lb
Scotland
avg production: 15,100 lb milk
3.9% butterfat
hardy, can handle extremes
nervous, hard to handle. (low milk, low milk solids) - Brown Swiss (color, mature weight, origin, lbs milk, % butterfat)
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Brown, Tan, Grey
polled and horned
mature: 1400 lbs
Switzerland
avg: 10,031 lb milk
4.0% butterfat
hardy, heavy boned. dual purpose in Europe. good veal. one of oldest breeds - Guernsey (color, mature weight, origin, lbs milk, % butterfat)
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shades of golden brown with white
polled and horned
mature: 1100 lb
Channel Island
14,100 lb milk
4.5% butterfat
yellow color due to fat.
characteristic leg problems - Holstein-Friesian (color, mature weight, origin, lbs milk, % butterfat)
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Black and white
polled and horned
mature: 1500 lbs
Holland and NW Germany
20,317 lbs milk
3.6% butterfat.
large and rugged. US breed. 70% of US dairy cow production - Jersey (color, mature weight, origin, lbs milk, % butterfat)
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brown, tan
polled and horned
mature: 1000 lb
Isle of Jersey
14,275 milk
4.7% butterfat
2nd most popular. fine boned, dished forehead. high milk production compared to smaller body size - Dairy Herd Improvement Association
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most common, official testing and management recordkeeping system. primary means for genetic improvement.
provides: cow production, reproductive, mastitis data, bull test data. nutrition and breeding, due dates, dry dates. -
what is type score based on? related to milk production?
related to longevity? - based on conformation only. not much relation to type score and milk production. very related to longevity