Page 9 - Bar JV Angus Bull and Heifer Production Sale – March 23, 2021

Reference Sires

D U INNOVATION 816
I I MAR INNOVATION 251 # [ CONNEALY REFLECTION #
CONNEALY IMPRESSION #
PEARL PAMMY OF CONANGA 194
MAR FINAL KAHUNA 856 # [ S A V FINAL ANSWER 0035 #
REG. # MAR KAHUNA PRECISION 328 674 #
*19228663
SHIPWHEEL CHINOOK # [ H A IMAGE MAKER 0415 #
D U RITO LASS 15Y APEX ERISKAY 5506 #
D U RITO LASS 921W [ S A V 004 PREDOMINANT 4438 #
D U RITO LASS 24M
CED BW WW YW SC MILK MARB REA $W $B
4 1.7 69 110 1.40 15 0.46 0.58 61 119
816 was the high selling bull of the 2019 Mt Rushmore Angus sale. We selected him for his
extra length and capacity. He has excellent feet and is very correct. Look for his sons to add
extra pounds and performance in the feedlot. Owned with David Uhrig, Mt Rushmore Angus.
D U Innovation 816
D U Innovation 816

PRA 141 249
J J A A R REALLY WINDY 1205 # [ A A R WINDY RIDGE 362
CROOK MT REALLY WINDY 141 # A A R LADY KELTON 2170
REVOLUTION 155 OF CROOK MT [ HERO 6267 OF R R 2418 #
REG. # REVOLUTION 51 OF CROOK MT #
#17352892
B BAR FRONTRUNNER 2616 [ BCC FRONTRUNNER 27K
PRA FRONTRUNNER 888 0111 B BAR LYNDA 611
PRA 888 BENZ 5123 # [ BON VIEW NEW DESIGN 888 #
PRA BENZ FAME 2129
CED BW WW YW SC MILK MARB REA $W $B
13 -1.6 54 85 .88 15 0 .12 50 85

PRA 141 249
PRA 141 249

Birth Weight & Calving Ease
University studies in Wyoming and data from Montana and Colorado lend credence to the following conclusions:

1. The birth weight itself infl uences calving ease by 65%.
2. The female has 60-70% infl uence on the birth weight of her calf.
3. The bull has 30-40% infl uence on birth weight of his progeny.
4. Pelvic measurement and angle as well as the shape of the calf have 35-40% infl uence on calving ease.
5. Length of gestation greatly affects birth weight. A fetus can gain over one pound per day in the last days of gestation.
6. Weather and temperature the last 30 days affect the length of gestation.
7. Size and maturity of the cow infl uence calving ease.
Most commercial producers do not take birth weights. Guessing is as inaccurate as driving with a broken speedometer – what’s thought to be 55 mph
may in fact be 65 or 70 mph, and what’s thought to be 70-80 lb. may actually be 80-90 lb. Remember, everything is relevant. Increased growth, frame
and performance will increase BW. A longer-bodied calf will weigh more. If a calf is expected to have genetics for growth, it will display this prior to
birth as well as after. As a rule of thumb, it takes a calf weighing 85 lb. at birth to fi nish at 1200-1250 lb. A cow should easily give birth to a calf weigh-
ing 8% of her own body weight. Thus, a 1200 lb. cow should give birth to a 96 lb. calf with ease.
Continued selection for light birth weights will ultimately reduce the mature sizes and performance of your cattle.
Angus bulls have long been known for their paramount calving ease. If you are breeding heifers, Angus in the go-to breed of choice. But what about the
so-called “big” birth weight Angus bulls – where do they fi t in? The vast majority of mature cows calve unassisted – it is pretty rare for a mature cow
to need assistance, except for abnormal deliveries (backwards, breech, twins, etc.). Data reported to the AAA shows that 99% of Angus cows, second
calf or beyond, calf unassisted and only 1% need some type of assistance (abnormal deliveries excluded from this data). Back to the question at hand:
where do the “big” birth weight Angus bulls fi t in? Example: If you have a bull with a Birth EPD of +5, he would be 3.2 pounds heavier than the average
(breed average BW EPD 1.8) (5-1.8 = 3.2 pounds difference). However, his superior growth EPDs mean he will wean bigger calves and put way more
money in your pockets than the average Angus bull! The moral of the story: If you are breeding mature cows to an Angus bull, don’t make birth weight
be your focus.

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