Just got home from work and googled cbc and found the interview. The link is here: CBC interview

It's all very interesting and I still want to keep reading some more about it to have a better understanding of it all.
From the sounds of it, Mark Holland is saying that Bill S-203 increases sentences for animal cruelty but doesn't aid in the convictions of abusers which he said is currently 1/4 of 1%. He indicated that his belief is that the Senate has blocked his bill two times already because he thinks that they are concerned that his bill could lead to further bills that might limit hunting, fishing and the agriculture industry. He claims that his bill would allow officers to go after the abusers of animals and I'm assuming make arrests that would stick.
But as you said, it shouldn't stop people from trying to get his bill or any other bill passed in the future. But he makes it sound like the Bill S-203 stops his bill from being passed but doesn't actually come out and say that. Maybe he's implying that if people adopt this bill, they will feel comfortable that enough has been done and won't push for his bill to go through.