Shambo the "sacred" bullock at the centre of a controversial three-month legal fight had lesions typical of TB, it has been confirmed.
The Welsh Assembly Government has said the result of a post mortem examination on Shambo meant "a positive TB breakdown is confirmed in the herd".
It is now considering what is needed "to protect human and animal health".
The animal was slaughtered after being removed from a multi-faith community in Carmarthenshire on Thursday evening.
It is thought there are around 50 other cattle at Skanda Vale in Llanpumsaint.
In a statement on Friday, the assembly government said it was now considering what other action was necessary "to protect human and animal health in relation to the test results from other animals in the herd".
"Further samples have been taken for further laboratory investigations, including bacteriological culture - these results will not be available for several weeks," continued the statement.
Protesters were moved by police officers from Shambo's enclosure
A Skanda Vale spokesman said they would wait for the results of culture tests before commenting on the results.
However, he said the monks' basic argument in opposition to the bullock's slaughter - that all life is sacred - still stood and would continue to do so regardless of the results of the post-mortem and any further tests.
With regard to the rest of the herd, the spokesman said that during the annual test which occurred in June, three cattle came back inconclusive.
These would be re-tested 60 days after the date of the original test, he added.
But a farmers' union said that other animals could have been put at risk because of the time it took for the issue to be resolved.
Brian Walters from the Farmers' Union of Wales (FUW) said the time the process took had endangered other animals at Skanda Vale and beyond.
Mr Walters added that the post mortem result justified the pressure that was put on the community to slaughter the bullock.
The six-year-old Friesian, who tested positive for bovine TB in April, prompted a legal battle which ended in the appeal court on Monday.
Shambo was loaded into a trailer
A judge had given the community hope when he ruled that two slaughter orders for Shambo "were unlawful and will be quashed".
But his ruling was overturned.
Shambo was eventually removed from Skanda Vale on Thursday evening after 100 protesters formed a human shield around the bullock.
It was destroyed later that night.
Hindu leaders said they seeking a meeting with the UK Environment Minister asking for reassurances about other temple animals.
Ramesh Kallidai, secretary general of the Hindu Forum of Britain, said he wanted "to check how agricultural law can cater to the needs of sacred animals in Hindu temples in Britain".
And Skanda Vale community leader Brother Alex said that, now Shambo had been taken away from them, a "nightmare" was just beginning for the Welsh assembly.
"Ignorant people have chosen to desecrate our temple and have chosen to destroy life unnecessarily," he said.
The National Secular Society said it was glad "common sense had prevailed at last" and that it was "absolutely unacceptable" for people to say their religious rights were supreme.