What about traits that are not so obvious? Like temperment, poor feeding response, infertility problems, poor nesting skills, egg eating, poor imune systems. There are many traits that can be passed down which are not easy to detect as in the Blood Reds of old. They seemed to be healthy but they would not thrive and fertility was a big problem. They had poor eating responses and often remained thin, untill they were outcrossed.
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King Snakes! Who can make a better mouse trap?
J Sierra

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