Fred's Hens posted this about a week ago.
Actually, there are studies. 0% calcium group, 2% calcium group, and 4% calcium group. Blood tests drawn and sperm mobility and health were checked.
Since poultry is a Trillions of dollars world wide industry, you must know everything about the chicken has been studied to death. LOL There is far too much at stake and the industry has lots of money to spend on research.
Layer feed is 4% calcium. Well, it just happens that the 4% calcium group tested the poorest of the three test groups, in this study. Also interesting thatsome calcium, ie, the 2% group were tested the best. Interesting too that 2% calcium is the amount of calcium in a Grower or Raiser type formula.
http://www.ncbi.nlm.nih.gov/pubmed/20434855
Does all this matter to most backyarders? Likely not. But to those who breed? Oh certainly. It matters greatly.
Actually, there are studies. 0% calcium group, 2% calcium group, and 4% calcium group. Blood tests drawn and sperm mobility and health were checked.
Since poultry is a Trillions of dollars world wide industry, you must know everything about the chicken has been studied to death. LOL There is far too much at stake and the industry has lots of money to spend on research.
Layer feed is 4% calcium. Well, it just happens that the 4% calcium group tested the poorest of the three test groups, in this study. Also interesting thatsome calcium, ie, the 2% group were tested the best. Interesting too that 2% calcium is the amount of calcium in a Grower or Raiser type formula.
http://www.ncbi.nlm.nih.gov/pubmed/20434855
Does all this matter to most backyarders? Likely not. But to those who breed? Oh certainly. It matters greatly.