Dr. Judith Ringel likes this technical article:
IntroductionIn late years, genetic studies on broiler chickens for selection of traits such as high growth rate and larger size of the body shows there is a negative correlation between reproductive traits and increasing yield. So that's in the roosters, physiological disorders like decreased libido, decreased mating numbers and reduced sperm production have increased (Dawkins and Layton, 2012 ...
This member had joined Engormix
June 25, 2020