Just got my Eurostar report for the beef data scheme. A load of my cows lost stars!!. Gone from 4 to 3 stars in several cases. One cow in particular I sold a Weanling heifer calf off her last year, 6 months old 260 kgs €1040 yet the cow drops a star!! like wtf
They could at least give a reason behind the ratings but it seems to be a wink and nod Science with ICBF
A cows own performance makes very little difference to her star rating compared with all the information and figures that's coming back from all the animals that are related to her,
It's like aiming at a moving target now to get a 5 star.
A four or five star cow is in the top 40℅ of cows in the country. How are we going to all have 50℅ 4 or 5 star in 2020
The original ratings where based on predictions reliability was low especially in young cows which had few offspring, the new ratings from genotype samples that where send off are supposedly more reliable, also another way they can lose stars is half brother/half sister performance, I bought 9 heifers from one herd in April with view to breeding, 5 five 4 four stars, all dropped to 2 & 3 stars I rang up was told was likely due to the bull performance dropped their half sisters/half brothers the year before may have killed out poorly in the mean time
Ok here's one for ye.I have twin sim heifers both 5 star one with a replacement value of 113e and the other 111e,why in gods name don't they have the same values?????????
One is older than the other.
Seriously though, were they genotyped?
If there wasn't genomics tests done it'd be down to their individual growth rates.
When their progeny comes along, their values will change again
Without genotyping, it's assumed that half of the good genes come from each of the parents, genotyping can tell different.
That's the way i understand it anyway.
Genotyping can give them different values, probably where the difference in yours has come from.
Hope they hold their 5 star rating
I'd still be breeding pedigree sheep only for the same feckin stars. total bull****
A presentation at the ploughing by sheep ireland revealed that the difference between lambs out of a 1 star and a 5 star rams was 1kg at weaning!!!!!!
Its just that over 100 lambs its worth 200£ more but its still stupid no doubt
If they've been genotyped it's down to them having different DNA. It's possible for full siblings (even twins) to have very different DNA which means it's actually possible for twins to have different star ratings never mind replacement values.