LYCOS RETRIEVER 
Castration: Procedure
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Castration of lambs may be appropriate to prevent indiscriminate breeding, produce more manageable groups of sheep or alter carcass characteristics (fatter lambs). However, as these reasons are only valid when lambs are kept past puberty for slaughter in the autumn or winter, castration is not recommended as a routine procedure - see the SERD (Scottish Executive Rural Directorate, formerly SEERAD) Welfare Codes for Sheep (link on the right).
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Sexually mature llamas may show positive changes as early as two weeks after castration, but most show a gradual decline in stud behaviors around four to six months after the procedure. After two years, any behavioral changes resulting from castration are complete in all llamas.
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In veterinary practice an "open" castration refers to a castration in which the inguinal tunic is incised and not sutured. A "closed" castration refers to when the procedure is performed so that the inguinal tunic is sutured together after incision.
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