From the start of this season players aged under-25 can be borrowed by other counties for a period of up to six weeks.
They would be able to play Championship and National League matches, even if they have already taken part in these competitions for their own county.
They would only be 'cup-tied' for games in the Nat West Trophy and Benson and Hedges Cup.
Moores said: "I see it as something that will benefit both players and counties, it's an initiative that perhaps should have been introduced a while back.
"No one wants to be loaned out because they might look on it as an admission that they are not good enough, but if you approach it sensibly you're not going to lose your loyalty to your county and it has obvious benefits.
"It's the same as football. It would give players the chance to get first team experience elsewhere and has been introduced to help them and their careers."
Moores believes Sussex are more likely to loan players out rather than bring them in.
"I feel all the guys we have on the staff now are good enough to play first team cricket and that is certainly the way they look at it, whereas in the past you had guys drifting along which wasn't healthy for them or the club.
"But if we had both our wicketkeepers injured for instance then the loan system would be very useful.
"Bringing someone in and trying to fit them into your system would be difficult but not impossible, but I think we would be looking to try and give players opportunities elsewhere if we felt it would benefit them."
Sussex continue their pre-season build-up with a three-day game against Durham, starting at Hove on Monday (11am).
Their opening match of the new season is on Saturday when they travel to Canterbury for a zonal tie in the Benson and Hedges Cup against Kent.
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