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In meat producing sheep and goat breeds the selection of rams and bucks is most effective as you need a limited number of them to produce the next generation. Simple breeding goals for these species are weight and muscularity at a fixed age. With the use of young rams and bucks the generation interval can be kept short and creates genetic improvement. From a farm economics point of view, the ewes should produce litters as long as possible. So, the generation interval on the dam’s side is rather long. In more intense sheep and goat production systems fertile dam breeds are crossed with males from specialised specialized meat breeds, resulting in a lot of lambs with a good growth and slaughter quality. The Dutch Texel breed is famous for these traits and is globally often used as a terminal sire line to produce crossbreds lams from females of local fertile breeds. In milk producing sheep and goat breeds, the selection of the dams of the males used for breeding is practisedpracticed. Progeny testing of males is hardly performed at stake in sheep due to a low percentage of milk sheep and milk goats in milk recording schemes. Up to now, little genetic improvement is obtained in milk sheep and goatsWith the growth of goat milk production in intensive systems, milk recording is introduced widely and this facilitates progeny testing of bucks.

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