A Queensland baby boy suffered broken bones and a severe burn to the face after spending the weekend with his father, a court has heard.

A jealous Queensland father broke two bones in his baby son’s body and burned his face with a bottle of hot milk, a court has heard.

Disturbing photos showing the 11-month-old’s face and body covered in bruises and with a large burn beside his mouth were shown in the Brisbane District Court on Monday.

The child was also found to have suffered a broken rib, a broken lower leg bone and a missing tooth after spending the weekend in his father’s care in June last year, the court heard.

He was hospitalised for two weeks.

His 25-year-old father has pleaded not guilty to five counts of assault and one count each of assault while armed and child cruelty.

The man’s trial, which began on Monday, heard he and the child’s mother were separated when the alleged cruelty occurred.

She’d left the baby and their other son in his care so she could spend the weekend socialising.

Crown Prosecutor Belinda Merrin said the father had sent several Facebook messages to his ex-girlfriend that weekend asking who she was with and indicating he wanted to rekindle the romance.

“He was jealous maybe that she was seeing someone else,” the prosecutor said.

He also sent messages about their son.

“WTF. I just went to change his nappy and there are bruises on his chest,” he allegedly said in one message, which was read in court.

His ex-partner, 21, testified that when she noticed the bruises on the child’s face the man chuckled and said that wasn’t the worst of it, and showed her the burn.

She took the baby to hospital where an examination revealed the full extent of the child’s injuries.

The man told police he’d accidentally given the baby a bottle that was too hot and didn’t know how the other injuries occurred, Ms Merrin said.

She added a pediatrician would testify that the injuries were inconsistent with being accidental.

Under cross-examination the baby’s mother said it was the first time she’d seen her children injured after spending time with their father.

The trial continues.