Wolverhampton Wanderers drew 0-0 with Birmingham City earlier today.
Jackett caused controversy when he did not start Zyro against Birmingham City, instead opting to bring the 23-year-old on at half-time.
However, the former Millwall boss has defended his decision, suggesting that Zyro is only being left out on a precautionary basis.
"We felt he needs to come off the bench at the moment, that's the opinion of the medical people,” he said.
"We do need him in the short term, but we want him in the long term to be a very good player. (It's about) managing his body and making sure he doesn't break down again.
"He didn't have his full energy when he came on either. He lacked a bit of energy, which is to be expected.”
Zyro has been out of action for almost two months with injury, and his initial progress at the club has been dented due to his fitness issues.
The ex-Legia Warsaw man scored three times in his first three appearances for the Midlands club after arriving in January.
He looks to have been a very valuable addition, but he was unable to make much of an impact against Birmingham.
The Blues had the better of the match after Zyro was introduced and yet Wolves battled well to hold out for a 0-0 draw against their Midlands rivals.