Η ΛΕΙΤΟΥΡΓΙΚΗ ΕΞΕΛΙΞΗ ΤΟΥ ΓΕΝΝΗΤΙΚΟΥ ΣΥΣΤΗΜΑΤΟΣ ΣΤΟΥΣ ΑΜΝΟΥΣ ΤΩΝ ΦΥΛΩΝ ΧΙΟΥ, ΣΕΡΡΩΝ ΚΑΙ ΚΑΡΑΓΚΟΥΝΙΚΗΣ ΜΕΧΡΙ ΤΗ ΧΡΗΣΙΜΟΠΟΙΗΣΗ ΤΟΥΣ ΓΙΑ ΑΝΑ...

THE FUNCTIONAL DEVELOPMENT OF THE REPRODUCTIVE SYSTEM WAS STUDIED IN 60 RAM LAMBS OF THE CHIOS, SERRES AND KARAGOUNIKI BREEDS FROM BIRTH TO SEXUAL MATURITY. ACCORDING TO THE RESULTS OF THIS STUDY, THE ACCESSORY GLANDS BEGIN THEIR FUNCTION WELL BEFORE THE ONSET OF SPERMATOGENESIS THAT IS OCCURED AT THE AGE OF 14-15 WEEKS. THE FIRST SPERMATOZOA APPEAR IN THE EJACULATE OF LAMBS AT THE AGE OF 20-21 WEEKS AND WHEN A BODY WEIGHT OF APPROXIMATELY 35 KGS HAS BEEN ATTAINED. THE ENDOCRINE FUNCTION OF THE TESTS INCREASES AT A SLOW RATE, FROM BIRTH TO THE AGEOF 32 WEEKS; FROM THEN ONWARDS THE RATE OF INCREASE IS ACCELERATED CONSIDERABLY UNTIL THE AGE OF 48 WEEKS. THE QUALITY OF SEMEN AT THE AGE OF 20 WEEKS IS NOTSATISFACTORY, BUT IMPROVES RAPIDLY IN THE COURSE OF THE ENSUING 2-3 MONTHS. RAM LAMBS BEGIN TO MANIFEST THEIR INTEREST IN THE FEMALES IN ESTRUS AT THE AGE OF12-16 WEEKS; THEIR COPULATORY CAPACITY WAS IMPROVING, AS THE NUMBER OF SEXUAL MEETINGS WAS INCREASED, AND THE ADHESIONS OF THE PENIS TO THE PREPUCE WERE RESOLVED. LAMBS AQUIRE THEIR FULL COPULATORY ABILITY AT THE AGE OF 28-32 WEEKS. IT IS CONCLUDED THAT THE AGE AT WHICH LAMBS MAY BE USED AS SEMEN DONORS IN A.I. ORFOR NATURAL SERVICE IS 32, 36 AND 34 MONTHS, FOR THE CHIOS, SERRES AND KARAGOUNIKI BREEDS, RESPECTIVELY.

Grantor dc:publisher

Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

Year dc:date

1987

Author dc:creator

• Αλεξόπουλος, Κωνσταντίνος

• DEVELOPMENT OF SEXUAL BEHAVIOUR
• DIAMETER OF SEMINAL TUBULES IN LAMBS
• FUNCTION OF ACCESSORY GLANDS IN LAMBS
• LDH IN RAM LAMBS EJACULATES
• ONSET OF SPERMATOGENESIS
• POBERTY IN RAM LAMBS
• ΕΝΑΡΞΗ ΣΠΕΡΜΑΤΟΓΕΝΕΣΗΣ ΣΕ ΑΜΝΟΥΣ
• ΕΝΔΟΚΡΙΝΗΣ ΛΕΙΤΟΥΡΓΙΑ ΤΩΝ ΟΡΧΕΩΝ
• Η ΕΝΗΒΩΣΗ ΤΩΝ ΑΜΝΩΝ
• Η ΛΥΣΗ ΤΩΝ ΣΥΜΦΥΣΕΩΝ ΤΟΥ ΠΕΟΥΣ
• ΛΕΙΤΟΥΡΓΙΑ ΤΩΝ ΕΠΙΚΟΥΡΙΚΩΝ ΓΕΝΝΗΤΙΚΩΝ ΑΔΕΝΩΝ
• ΜΙΚΡΟΣΚΟΠΙΚΑΧΑΡΑΚΤΗΡΙΣΤΙΚΑ ΤΟΥ ΣΠΕΡΜΑΤΟΣ
• ΣΕΞΟΥΑΛΙΚΗ ΣΥΜΠΕΡΙΦΟΡΑ ΑΜΝΩΝ
• Γεωπονικές Επιστήμες και Κτηνιατρική
• Agricultural and Veterinary Sciences
• Κτηνιατρική
• Veterinary Science

Language dc:language

gre

Identifier

10.12681/eadd/0538

OAI identifier oai:identifier

oai:10442/0538