The rules relateed to the sanctity of young will not be stricter than those related to the sanctity of the consecrated parent: Bechorot 14b
Differentiating between a child of an offering, and a child of an animal which has been dedicated for Temple upkeep: Temurah 31b
Dealing with a fetus inside a consecrated animal
How to slaughter the mother, if the mother is an offering and the fetus is not sanctified: Temurah 11b-12a
How to slaughter the mother, if the fetus is an offering and the mother is not sanctified: Temurah 12a
Burying a sanctified animal's miscarriage or placenta: Temurah 33b
Whether or not we hold that if the mother is to be redeemed, and its money used for certain offerings, then this is the fetus's status as well, or not: Temurah 18b-19b
Sanctifying a fetus inside its non-sanctified mother: Temurah 16b, 24b
Sanctifying a first-born fetus of a Kosher animal, as a clever means to prevent its birth as a first-born animal: Temurah 24b-25a