Gert ultrasound results

[TK Ranch]

A while ago some one was asking for carcass info on santa Gertrudis cattle. we had 2 in a bull test station and i thought i would share tha results with all of you.
-------------bull#1----bull#2
Marbling----- 3.30 ----- 5.20

Backfat------.21--------.29

REA in^2 -----9.77------11.02

wieght adj
REA in^2 -----1.04 ----1.28
per 100 #

%lean
meat yield-----61.19-----59.91


Hope this makes sense I have more test info pm me with your email and I will send it if any one is interested.


TK

 

[BC]

What is the breeding behind bull #2?

 

[TK Ranch]

The sire is an AI son of a J&S Fullen Farms Bull #310 and the dam is one of our own.

TK

 

[MikeC]

What age were these bulls? Are the numbers adjusted or actual?

Personally, I cull bulls with REA's that small. But each to his own.

 

[OK Jeanne]

I agree Mike re ribeye. We sold a bull to a NM ranch that
had a 20 inch ribeye---still have his mom; and one of her
daughters scanned a 14+inch ribeye at 2 yrs of age
(she's a keeper).

 

[TK Ranch]

Thes bulls are 12 and 11 months old. I'm curios on the info about the bull with the 20 inch ribeye any data on him. Out of 240+ yearling and long yearling bulls 17 inch was the top. What were they on for feed???

TK

 

[OK Jeanne]

This was OK Major at 3 1/2 yrs old. Gearld Fry scanned him
and said he had a 20 inch ribeye - shortly after this photo
was taken. He wasn't on any particular type of feed & was
in the pasture. The photo was in Oct, so he had been away
from the cows since mid-August.The grass was pretty good
then as I recall. He had 1/2 inch of backfat. Our forage
base is really peaks/valleys it seems. It has always been
my guess that bulls generally don't reach their full mature
size until they are close to 4 yrs old---unless of course,
they are on "full feed" to rush up their growth rate.[/img]

 

[MikeC]

Usually people don't ultrasound them much older than yearlings. I would see no use to scan one at 3 1/2 years. Would tell you nothing.

My main herdbull scanned 19.4 sq. in. REA at 1 year of age. Doesn't mean his sons REA's are that big either.

 

[OK Jeanne]

Gearld Fry was looking to buy a bull for one of his friends.
He said he could tell from the angle of the ribeye muscle
fibres whether or not the animal would be genetically
tender & therefore pass on that trait. He was also measuring
heart girth, flank girth, etc etc. In addition, he wanted to
see how the bull acted while standing around in the loading
chute while being measured.
The Tallgrass beef folks, as I understand, like to scan at
about 800 to 900 lbs in order to forecast a final ribeye
size at slaughter.

 

[OK Jeanne]

Purebred Murray Grey.

 

[purecountry]

Great-lookin' bull. It's always great to hear of cattle doing amazing things on grass-basesd systems. It can be done.

 

[TSR]

Usually people don't ultrasound them much older than yearlings. I would see no use to scan one at 3 1/2 years. Would tell you nothing.

My main herdbull scanned 19.4 sq. in. REA at 1 year of age. Doesn't mean his sons REA's are that big either.

I agree Mike on the scanning at 3-4 yrs of age, it wouldn't be particularly useful with respect to REA. Question : What about scanning at that age to fine %imf ? Would you consider that data useful on a 3-4 yr old animal?

 

[MikeC]

Usually people don't ultrasound them much older than yearlings. I would see no use to scan one at 3 1/2 years. Would tell you nothing.

My main herdbull scanned 19.4 sq. in. REA at 1 year of age. Doesn't mean his sons REA's are that big either.

I agree Mike on the scanning at 3-4 yrs of age, it wouldn't be particularly useful with respect to REA. Question : What about scanning at that age to fine %imf ? Would you consider that data useful on a 3-4 yr old animal?

I would not. The scans that are used to calculate EPD's are adjusted and have to be done within a particular window of age.

Beef that is three to four years of age won't grade choice or prime anyway.

 

[Jeanne - Simme Valley]

The actual size of the ribeye measurement on these tested bulls isn't as important as the %REA /100# wt - anything over 1.0 is considered good.