Prime lamb returns continue to lead the industry and putting a Poll Dorset ram in with ewes this spring could reap rewards in just 12 months.

And with prices at record highs and supply down, turning off prime lambs with rapid growth that are in high demand from processors is an obvious option.

New season Poll Dorset-sired lambs have been making close to $250 for 22kg carcass weight lots already this year and the Eastern States Trade Lamb Indicator still sits at 800c/kg, despite the spring flush having started to hit the market in NSW.

At Valley Vista Poll Dorset Stud in Coolac, prime lamb sires are bred for high growth rate, length and muscle, as well as being structurally sound and ready to work in any environment.

The stud has focused on keeping its best genetics in good order.

"We have been consistently culling out under achieving stock so that selection pressure flows through to our clients," principal Andrew Scott said.

"One of the main selection criteria is selecting for high growth rate. All lambs are weighed at weaning and then twice more at thirty day intervals.

"These weights are converted to grams/day. Lower than 300 to 350 grams/day are culled and generally the lambs doing better than 300 to 350 grams/day are retained in the stud."

The Graham family's operation at Adjungbilly produces more than 10,000 lambs a year, consistently hitting processing grids.

"From my perspective we've been consistently using Scott's rams since 1992," David Graham said. "They breed consistent to type and that assists in the marketing program and finishing ability, because they have excellent growth with the right amount of eye muscle and fat.

"We achieve about 95 per cent ewes scanned in lamb to ewes joined after an eight week joining. Rams are functional that way, with plenty of productivity and producing lambs that hit the grid."

The early growth and maturity, as well as structural correctness, of the rams was on show at the NSW Dorset Championship in Cowra earlier this year, where Valley Vista sires won the junior champion and reserve junior champion awards.

At the Australasian Dorset Championships in Bendigo, the stud was awarded Champion Poll Dorset Ewe, with Valley Vista 334-18, as well as reserve senior champion ram and fifth and sixth in the Champion of Champions competition, with 12 of the best rams from across the country being judged.

Last week the stud was the most successful exhibitor of Poll Dorsets at the Royal Melbourne Show.

Valley Vista will hold its 16th annual on-property sale on October 4, offering 10 select sires and 130 flock rams. Stockscan and Lambplan data is available for all rams, which are OJD vaccinated and Brucellosis accredited.

Inspections from 10am, auction kicks off at 1.30pm.