Huddersfield (6) 24
Tries: D Hodgson 3, Lolesi
Goals: B Hodgson 4
David Hodgson clocked up the fifth Super League hat-trick of his career
Huddersfield winger David Hodgson ran in a hat-trick as a rejuvenated Giants comfortably bounced back from their shock Easter Monday defeat at Salford.
Hodgson scored the only try of the first half before adding his second six minutes after the break.
He then bagged his third and 10th try of the season before fellow winger Jamahl Lolesi completed the scoring.
And the Giants held on to 'nil' a side on home soil at the Galpharm Stadium for the first time in Super League.
Brett Hodgson landed all four conversions to cement Huddersfield's place at fourth in the table.
Troubled Cas revealed before the game that they had dropped Kiwi half-back Rangi Chase and young England forward Joe Westerman as a "disciplinary measure".
The Tigers were already weakened by injuries to half-back Brent Sherwin (shoulder), centre Kirk Dixon (sternum) and prop Nathan Massey.
And, after losing 19-6 at local rivals Wakefield on Good Friday, before getting thumped 52-18 at home to St Helens on Easter Monday, this third defeat in eight days simply compounded Cas's problems.
This was the the struggling Tigers' eighth loss in 11 Super League games this season. And, ahead of next weekend's tricky Challenge Cup fourth round date with last season's Championship winners Barrow Raiders, it increases the mounting pressure on coach Matterson.
Yet, despite that, the Tigers produced a spirited performance to frustrate the Giants for long periods - and it was only in the final quarter of an hour that a home victory was assured.
The Giants finally made weight of possession tell when they broke through for the opening try on 14 minutes, Kevin Brown offloading brilliantly in a tackle before Lee Gilmour and Paul Whatuira spread the ball wide for Hodgson to go over in the corner.
But it was not until after the break that the Giants managed to stretch their lead when Brett Hodgson found his namesake after a fine run and the winger slid over to double his tally.
Cas were still not broken, responding with a sustained spell of pressure and four quick penalties close to the Giants line threatened to haul them back into the game.
But they were unable to capitalise and Huddersfield emerged unscathed when Michael Cooper lost the ball attempting to touch down.
And Huddersfield made it safe when Brown broke up the middle and Whatuira sent Hodgson racing clear to complete his hat-trick.
Another followed in quick succession as Danny Brough weaved his way through, Luke Robinson took up the attack on the right and Lolesi finished off.
Huddersfield Giants coach Nathan Brown said:
"I understand Terry is getting a hard time from the Cas fans but when you have got all those players watching they are not going to do any good. The blokes that had to stand down have just done the wrong thing.
"I have coached Rangi and he is a good young kid but he has let his team down. Joe Westerman is a kid with all this talent and it bothers you when coaches get put under pressure because blokes with talent don't do the right thing by their club.
"Terry took that side to the semis last year, but now he's got half his side watching and everyone wants to give him a hard time. It's just not right. If some of those blokes pull their heads out of the clouds and have a go every week they will be good players and their club will do well."
Castleford Tigers coach Terry Matterson said:
"It wasn't a hard decision. They didn't prepare properly and it wasn't fair on their team-mates, the club and the fans.
"It is up to each player to prepare in the right manner. We have dealt with it, they will be fined, they were stood down for this week and we move on.
"They let their team-mates down tonight, they know that and they don't feel good.
"I'm really proud of the boys though. The expectations on Huddersfield after seeing our team would have gone through the roof. But we tackled our hearts out."
Huddersfield Giants: B Hodgson, Lolesi, Lawrence, Whaturia, D Hodgson, Brown, Brough, Mason, Robinson, D Griffin, Gilmour, Fa'alogo, Aspinwall.
Replacements: Raleigh, Crabtree, Faiumu, Grix.
Castleford Tigers: Thompson, Ainscough, Shenton, Clayton, Wainwright, McGoldrick, Netherton, Jackson, Hudson, Huby, Cooper, Snitch, Jones.
Replacements: Sargent, Higgins, Holmes, Tuson.
Referee: Steve Ganson (St Helens).