For the source text click/tap here: Beitzah 7
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In our daf we learn any species that cohabitates by day will bear offspring by day. Any species that cohabitates at night will bear offspring by night. Any specie that cohabitates by day or by night will bear offspring either by day or by night. This determines the halachic status of the egg that is found delivered.
We explore the biology of fertilized vs non fertilized eggs followed by an examination of the horrors of the poultry farm industry, for its workers and for the animals. We end with attempts by the new eco-kosher system that holds kashrus hechsher to higher ethical and environmental standards.