Cut the BS said:
Mill Iron A said:
I use some angus as well, they definately have brought some positives to the industry. I wouldn't give them all the credit for the high prices but I will say they have done some good. Where my bias comes into play is the demoting of crossbreeding. The only real given we can have and they tell everyone it's a bad idea. It's just sad how nieve people can be on this subject. I don't think I need to go to much into the fact that heterosis brings longer cow life, much higher fertility, more calves, bigger calves, healthier calves etc. I apologize about my comment about the quality grading. I heard that from a trusted source who as according to the USDA reports I shouldn't have trusted on that. However, while I was looking at the yearly averages I did find that YG 4's were signficantly higher 4.9% in 2007 vs. 7.9% now. My other struggle comes with how angus have been selecting for growth when it was there the whole time. The same guy that bashes continentals for being "way too big and coarse" is breeding up angus bulls that are just that. Continental cattle at this point might have similar growth patterns in weight as the high performing angus but composition is extremely different. There is so much more muscle in a crossbred steer than a purebred angus steer. (as long as you are comparing the "average" crossbred steer with the "average" angus steer if there is such a scenario. Point being continental cattle typically have more muscle). Even if the angus cattle become heavier muscled than the continental cattle you still can't breed heterosis into a purebred animal.
the only disagreement I have with your entire statement.. is heterosis counter-acts consistancy...
This isn't completely true...
I would argue that you can breed cattle of different breeds and take advantage of heterosis while using cattle that have the same type, design, etc. and the offspring should be very uniform. A lot of breeders do this and make more uniform calves than a lot of purebred breeders! There is as much genetic diversity within any breed as you'll ever find between different breeds, and that's proof enough to me that uniformity is not only found in purebred herds.
Where your argument is valid is if you're talking about mating cattle that are very different in terms of breed, color, frame size, etc. The more different the two parents are, the more heterosis you'll see in the first mating, but also the more inconsistency you will probably see in the next generation. The reason is because genetically, the animal you're using might be a frame score 6, but if his mother was a 4 and his daddy was an 8, then genetically he's a 4 and an 8 that LOOKS like a 6. Cattle like that can't breed true because their phenotype and genotype aren't exactly the same.