The latest operations confirm a sharp upward spike in winter departures from troubled Libya.
Aid groups believe the exodus is being driven by worsening living conditions for migrants in the north African state and by fears the sea route to Europe could soon be closed to traffickers.
Migrant arrivals in Italy from its former colony are up by between 57 and 81 percent this year in comparison to the opening two months of 2015 and 2016, according to Italian interior ministry figures.
The coastguard said 10 rescue operations had taken place on Friday to help migrants aboard four large rubber dinghies and six smaller wooden vessels.
Norway's Siem Pilot, part of the European border agency Frontex's mission, and the Aquarius, operated by French NGO SOS Mediterranee and Doctors without Borders (MSF), carried out the rescue operations.
Amid relatively calm seas, there were no reports of fresh casualties. The United Nations refugee agency estimates 440 people have lost their lives trying to make the crossing from Libya to Italy since the start of 2017.
More than half a million migrants have reached Italy from Libya since the current migrant crisis began to spiral out of control at the end of 2013.
The vast majority of them have been Africans but the latest batches have
included scores of Syrians and Bangladeshis.
Crew on the Aquarius told AFP that the people it had picked up included 16 nationalities, including a Syrian family of six with the twin babies.
They were among seven infants aged under a year that were rescued by the Aquarius, which also saved 12 toddlers aged one to four.
Tom Kington, a reporter for British newspaper The Times, was onboard the NGO-operated boat and recounted a lighter moment in the day's dramatic events.
“Syrian man with sense of humour picked up today on #Aquarius when told he couldn't smoke: 'I want to go back to Libya'” Kington posted on Twitter.
One of the Syrian survivors, who only wanted to be identified as M., toldcrew that he had been living in Libya for three years before deciding he had to try and get to Europe, where he has a brother living in Germany.
“My family is still in the region of Aleppo. I called them yesterday before leaving,” the 35-year-old English teacher said.
'Only the blacks'
“In Libya, it is a catastrophic situation, the militias, no money, no government, wars between two cities … I think that by the end of this year, there will not be any Syrians left in Libya,” he said.
“Myself, I was hoping to return to Syria, but I couldn't. I had no other choice.”
A Bangladeshi, identified as J., said conditions in Libya were worse than those he and his compatriots had fled.
“We all have left Bangladesh because of violence and poverty, the situation is very bad there,” said the former Dhaka resident.
“But Libya is definitely worse. You can't go to the market without fear of being shot.”
A survivor from Cameroon said black Africans were even more vulnerable.
“The Libyans sell people. You don't even realise at first that it is a kidnapping, someone tells you to go there for work but then if you ask to be paid for your work they threaten to kill you.
“The situation is very bad. When they see a black, they will take him, call his family to send money. Only the blacks, not the other people. The only way out of it is to escape. You always have to hide when you're black in Libya.”