Expanding the dairy herd in pasture-based systems: the role for sexed semen use on virgin heifers.


A model was developed to examine the effects of sexed semen use on replacement heifer numbers and rate of herd expansion in a seasonal dairy production system. Three separate herds were established according to the type of semen used on virgin heifers: conventional frozen-thawed (Conv), sexed fresh (SFre), or sexed frozen-thawed (SFro). In the model, sexed… (More)
DOI: 10.3168/jds.2012-6126


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