SCEP or Sceptical

You can see the myostatin results on herdplus from any calves you have got dna tested in the last 2/3 years.Saves you the additional charge .You can't see it from the mobile app.Only on desktop version.

I assume you have to sign up to herdplus with ICBF to join the SCEP?

That will tell you the stars for your animals pretty quick

It’s 80 percent of reference number required?

so if you have 15 cows divide by 1.5 to get 10 as reference number.80 percent of 10 is 8. So 8/15?cows need to be 4/5 star.

thst correct?

393 going by the icbf report

Yeah they can, as an animal has more calves they generally increase, add to that progeny that get slaughtered at a certain weight, how their siblings get on, how their sires progeny perform. Loads of factors involved, how do they calculate all these stats? No idea but there's a lot involved, much of the time it's out of the farmers control.

I'd say it's more a scheme which suits pedigree cattle more so than commercials.

Definitely continental biased.

If they were 4 stars when they were genotyped They were eligible at the end of the scheeme

It definitely is a flawed system. I joined last week and as I posted in the chic chat thread nearly all the feeder cull dairy cows that are in the herd are 5 star including pure Jersey and crossbred Jersey cows. It's a ridiculous system that promotes dairy beef over beef bred animals.

That’s been mentioned here before, also a bias to PG/Munster bulls. Herdplus has done harm to beef production, but maybe that’s the intention

I have given up trying to understand how they calculate star ratings for cows. It's a pile of nonsense if you ask me. I think its gimmick to sell more of c AI straws to be honest. Attached is a screenshot of one of my worst rated cows. One star since forever. 12 lactation, 16 calves, adg never below 1kg even with multiple sets of twins. And mainly heifer calves. Bulls hitting above 1.4 to 1.5kg. Extremely quiet, good for milk. Calving interval of exactly 365 over 12 lactations. She wouldn't breed my best calf but she would hold her own in the middle of the pack. You would think with that much data behind a cow she would be higher than 1 star. She is not my only example of abnormal star scoring. Some too high, some to low. Wouldn't instill confidence in the calculations/genomic testing

Interesting article on Agriland about weanling weights from starred cows -

It’s on Agfood, click on SCEP, the numbers for the six years and the reference number are there.

Interesting as in no definitive conclusion can be obtained to say the star rating is progressing beef progeny. Less than half of the 1000e weanlings are from 4 and 5 star herds and over half are from 1 to 3 star herds. Marginal difference at best. If the star rating was credible this differential should be significantly higher. Load of assumptions then from the icbf commentator about meal quantity fed and cow size with no data to back it up. Its no wonder there's still no increase in certainty around the star rating since 2015 if this is the level of data analysis the icbf are presenting. If a 12 year old presented that you would have to bite your tongue instead of laughing i out of the room. Another quango masquerading as intellects.

There is inaccuracies been input for sure. But these would be consistent across the entierity of data range and should balance out. All one needs to do is look inside there own herd and compare the stars across their cows and try comprehend why some cows are rated 1 star when they should be 4 or 5 and why some cows are 4 or 5 when they should be 1. Surely the guy that inputs incorrect birth dates is doing it for his 1 star cows as well as his 5 star cows.