Article 1 
Member States shall ensure that, without prejudice to animal health rules, there is no prohibition or restriction of or obstacle to: — the acceptance of pure-bred breeding female pigs for breeding, — the acceptance of pure-bred breeding male pigs for natural service, — the use of ova and embryos from pure-bred breeding female pigs.
Article 2 
1. A Member State may not prohibit, restrict or impede: — the acceptance for artificial insemination within its territory of pure-bred breeding male pigs or the use of their semen when those animals have been accepted for artificial insemination in a Member State on the basis of tests for monitoring their performance and assessing their genetic value to be carried out in accordance with Commission Decision 89/507/EEC ( 2 ) , — the acceptance for official testing of pure-bred breeding male pigs or the use of their semen within the quantitative limits necessary for the tests for monitoring their performance and assessing their genetic value to be carried out in accordance with Decision 89/507/EEG by officially approved associations or organizations. 2. Where implementation of the provisions of paragraph 1 would give rise to disputes, particularly with regard to interpretation of the tests, operators shall have the right to seek the opinion of an expert. In the light of the expert's opinion, measures may be adopted at the request of a Member State in accordance with the procedure laid down in Article 4. 3. The general rules for implementing paragraph 2 shall, where necessary, be adopted in accordance with the procedure set out in Article 4.
Article 3 
Member States shall ensure that, without prejudice to animal health rules, for marketing, the semen, ova and embryos are collected, treated and stored by an officially approved centre or officially approved staff.
Article 4 
Where the procedure laid down in this Article is to be followed, the Standing Committee on Zootechnics, set up by Decision 77/505/EEC ( 3 ) shall act in accordance with the rules set out in Article 11 of Directive 88/661/EEC ( 4 ) .
Article 5 
Member States shall bring into force the laws, regulations and administrative provisions necessary to comply with this Directive by not later than 1 January 1991. They shall forthwith inform the Commission thereof. However, the Kingdom of Spain and the Portuguese Republic shall have an additional period of time of two years within which to comply with this Directive.
Article 6 
This Directive is addressed to the Member States. Done at Brussels, 5 March 1990. For the Council The President J. WALSH Done at Brussels, 5 March 1990. For the Council The President J. WALSH For the Council The President J. WALSH