carl said:
Just wanted to voice my opinion on the birth weight issue. We are the breeders of Wiseguys bull so maybe I am a little biased. I don't think you can compare the birth weights of a bull born in Saskatchewan and one born in Kansas. Everything else being equal the one in Kansas will alway weigh less at birth. I would suggest at least 10 lbs less. Now that may still be too big for some people but we routinely use Shorthorn (and Hereford and Charolais) bulls with birth weights up to 110 lbs on our commercial cows with no trouble at all. I would think our cow herd is run under range conditions. Our cows calve on grass, with little or no supervision, and we sleep very well at night. We don't get the weaning and yearling weights wiseguy is showing but that is probably just a case of different management practises
I am not suggesting everybody should do what we do but I am not willing to settle for a 75 lb calf out of a 1200-1400 lb cow. I like to see my bull calves weighing at least close to 90 lbs at birth or I start to think the cow has taken the year off.
In my opinion, the birth weight is the lesser factor to calving ease. I moved farms about 9 years ago and my birthweights from the same sires jumped about 7kg (15lbs). My calves now average about 41kg (90lbs). My cows have an average weight at weaning of 537kg (1181lbs). It was a move of about 300km (187m). My calving has not suffered at all.
The bigger calves, in the environment, definitely have more vigour at birth and more growth to weaning.
To put into perspective, here are a number of bulls used in the USA/Canada, and also in my herd, showing the average birth weight and number of calves in my herd respectively:
Sprys All Gold D052 39kg/86lbs (56)
Homedale Accomplished 42kg/92lbs (5)
JSF Gauge 137W 35kg/77lbs (19)
Shadybrook Scotty 83K 38kg/84lbs (10)
Crawfdown Fighter Pilot 1W 43kg/95lbs (4)
Shadybrook Powerplay 802U 42kg/92lbs ( 8 )
Saskvalley Yesterday 116Y 38kg/84lbs (1)
I received 30 more doses of Saskvalley Yesterday in my tank a week ago and have ordered another 30 doses of JSF Gauge to be delivered in July 2016 for my October TAI programme.
Carl, I hope I have made the right decision here, I put in 17 doses of Yesterday, of my first consignment of 30, on Monday. I used a few doses in 2015, only about 5, so will expect a few more calves in July, if successful. I have about a 60% hit rate on my TAI programme.
Without any prejudice, the Shadybrook Powerplay 802U and Crawfdown Fighter Pilot 1W calves have been the worst as far as fleshing ability goes and I have dumped the remaining Powerplay semen. I will give the Fighter Pilot one more chance. I was stuck when I couldn't get more Scotty or any Major Leroy at the time and settled for my third and fourth choices. I should have just put my herdsires in.
That is the joy of farming Shorthorns in this corner of the world, no choice!