A Brazilian mum who killed her son because he was gay will spend the next 25 years behind bars.

Tatiana Ferreira Lozano Pereira was sentenced in a jury trial last week to 25 years and eight months in prison after she was convicted of killing her 17-year-old son Itaberli Lozano.

The two men who were supposed to carry out the crime but could not go through with it - Victor Roberto da Silva and Miller da Silva Barissa - will each serve 21 years and eight months in prison.

Out Magazine reports that 35-year-old supermarket manager Pereira from the small town of Cravinhos in Sao Paulo state had never accepted her son after he came out.

Lured son to death

In December 2016, the pair had a huge row and Lozano left home to live with his grandmother.

Shortly afterwards, in early January 2017, Pereira lured her boy to his death by telling him she wanted to make up.

However, she had secretly employed da Silva and Barissa to kill him.

Although the pair were happy to beat him up, they did not kill the youth - and his mother stabbed him to death.

Lozano's stepfather Alex Pereira then took the body to a sugarcane field where he set it alight.

The teen's remains were found on January 7.

Tatiana Ferreira Lozano Pereira with her 17-year-old son Itaberli Lozano. Credit: Supplied / Facebook

During the trial, Tatiana Pereira said she was not homophobic but rather she had clashed with Lozano because he used drugs and brought men home.

However, police found social media evidence of Pereira hiring neighbourhood men to beat her son up.

Lozano's paternal uncle Dario Rosa told Brazilian TV station EPTV that Lozano was a well-behaved youth and a hard worker - but Pereira could never accept his sexuality.

"He had a job, he was very polite, (and) he never quarrelled with anyone," he told the network.

Chevron Right Icon 'His mother ... did not accept that he was a homosexual.'

"He only had problems with his mother, who did not accept that he was a homosexual."

Deadly hate crimes against gay, lesbian, bisexual and transgender people in Brazil have been steadily increasing in recent years.

In 2008, 187 LGBTQI people were killed in hate crimes.

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That shot up to 445 deaths in 2017, falling marginally to 420 people in 2018.

Brazil's president Jair Bolsonaro has been accused of fanning the flames of hatred.

He has said he would rather have a dead son than a gay son and has boasted about being homophobic.

This year, he said Brazil would not become "a gay tourism paradise".

"Brazil can't be a country of the gay world, of gay tourism. We have families," he said.