{"id":{"repo_id":"greece","oai_identifier":"oai:10442/1218"},"canonical_url":"https://search.dev.ndltd.org/etd/greece/oai:10442/1218","repository":{"repo_id":"greece","name":"Greek National Archive of PhD Theses","base_url":"https://phdtheses.ekt.gr/eadd_oai/request"},"display":{"title":"ΗΛΙΚΙΑ ΤΗΣ ΗΒΗΣ ΚΑΙ ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ ΤΗΣ ΠΡΩΤΗΣ ΟΙΣΤΡΙΚΗΣ ΠΕΡΙΟΔΟΥ ΑΜΝΑΔΩΝ ΤΩΝ ΦΥΛΩΝ ΧΙΟΥ ΚΑΙ ΚΑΡΑΓΚΟΥΝΙΚΗΣ ΣΕ ΣΧΕΣΗ ΜΕ ΤΟ ΕΠΙΠΕΔΟ ΔΙΑΤΡΟΦΗΣ","abstract":"STUDY OF THE INFLUENCE OF THE FEEDING LEVEL ON THE CHARACTERISTICS OF PUBERTY AND THE FIRST BREEDING SEASON IN TWO GREEK SHEEP BREEDS, THOSE OF CHIOS AND KARAGOUNIKI. A TOTAL OF EIGHTY FEMALE LAMBS WERE USED, WHICH HAVE BEEN BORN IN TWO CONSECUTIVE EXPERIMENTAL YEARS, 1984 AND 1985. THE EWE LAMBS OF EACH YEAR WERE ASSIGNED TO TWO GROUPS, WHICH GREW ON DIFFERENT FEEDING REGIMES. DURING THE GROWTH PERIOD, THE LEVELS OF INSULIN, THYROXIN (T4) AND TRIIDOTHYRONIN (T3) IN THEBLOOD SERUM WERE MEASURED. OESTRUS WAS DETECTED DAILY BY TEASER RAMS AND THE OVARIAN ACTIVITY WAS MONITORED BY PROGESTERONE CONCENTRATION IN BLOOD SAMPLES COLLECTED TWICE WEEKLY. PROGESTERONE AND OESTRADIOL PROFILES AROUND SECOND PUBERTAL OVULATION WERE ALSO DETERMINED BY DAILY BLOOD SAMPLING AND OVULATION RATE WAS ASSESSED BY LAPAROSCOPY AT FOUR DEFINED OESTRUS CYCLES. ALL THE EWES LAMBS OFBOTH EXPERIMENTAL YEARS WERE BRED AT THE SECOND EXPERIMENTAL YEAR","abstract_html":"STUDY OF THE INFLUENCE OF THE FEEDING LEVEL ON THE CHARACTERISTICS OF PUBERTY AND THE FIRST BREEDING SEASON IN TWO GREEK SHEEP BREEDS, THOSE OF CHIOS AND KARAGOUNIKI. A TOTAL OF EIGHTY FEMALE LAMBS WERE USED, WHICH HAVE BEEN BORN IN TWO CONSECUTIVE EXPERIMENTAL YEARS, 1984 AND 1985. THE EWE LAMBS OF EACH YEAR WERE ASSIGNED TO TWO GROUPS, WHICH GREW ON DIFFERENT FEEDING REGIMES. DURING THE GROWTH PERIOD, THE LEVELS OF INSULIN, THYROXIN (T4) AND TRIIDOTHYRONIN (T3) IN THEBLOOD SERUM WERE MEASURED. OESTRUS WAS DETECTED DAILY BY TEASER RAMS AND THE OVARIAN ACTIVITY WAS MONITORED BY PROGESTERONE CONCENTRATION IN BLOOD SAMPLES COLLECTED TWICE WEEKLY. PROGESTERONE AND OESTRADIOL PROFILES AROUND SECOND PUBERTAL OVULATION WERE ALSO DETERMINED BY DAILY BLOOD SAMPLING AND OVULATION RATE WAS ASSESSED BY LAPAROSCOPY AT FOUR DEFINED OESTRUS CYCLES. ALL THE EWES LAMBS OFBOTH EXPERIMENTAL YEARS WERE BRED AT THE SECOND EXPERIMENTAL YEAR","abstract_has_math":false,"creators":["Μπιζέλης, Ιωσήφ"],"institution":"Γεωργικό Πανεπιστήμιο Αθηνών","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1989,"date_issued":"1989","date_published":"1989","updated_at":"2026-07-24T02:24:46Z","subjects":["BREEDING SEASON","Growth","Hormones","Nutrition","Puberty","Reproduction","Sheeps","Αναπαραγωγή","Ανάπτυξη","Διατροφή","ΗΒΗ","ΟΙΣΤΡΙΚΗ ΠΕΡΙΟΔΟΣ","Ορμόνες","Πρόβατα","Γεωπονικές Επιστήμες και Κτηνιατρική","Agricultural and Veterinary Sciences","Επιστήμη Ζωικής Παραγωγής","Animal and Dairy Science"],"languages":["gre"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1218"],"render_values":[{"text":"10.12681/eadd/1218","href":"https://doi.org/10.12681/eadd/1218","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10442/hedi/1218","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Μπιζέλης, Ιωσήφ"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1989"]},{"key":"dc:publisher","label":"Institution","values":["Γεωργικό Πανεπιστήμιο Αθηνών","Agricultural University of Athens"]},{"key":"dc:type","label":"Dc Type","values":["PhD Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["BREEDING SEASON","Growth","Hormones","Nutrition","Puberty","Reproduction","Sheeps","Αναπαραγωγή","Ανάπτυξη","Διατροφή","ΗΒΗ","ΟΙΣΤΡΙΚΗ ΠΕΡΙΟΔΟΣ","Ορμόνες","Πρόβατα","Γεωπονικές Επιστήμες και Κτηνιατρική","Agricultural and Veterinary Sciences","Επιστήμη Ζωικής Παραγωγής","Animal and Dairy Science"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["gre"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1218","http://hdl.handle.net/10442/hedi/1218"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["STUDY OF THE INFLUENCE OF THE FEEDING LEVEL ON THE CHARACTERISTICS OF PUBERTY AND THE FIRST BREEDING SEASON IN TWO GREEK SHEEP BREEDS, THOSE OF CHIOS AND KARAGOUNIKI. A TOTAL OF EIGHTY FEMALE LAMBS WERE USED, WHICH HAVE BEEN BORN IN TWO CONSECUTIVE EXPERIMENTAL YEARS, 1984 AND 1985. THE EWE LAMBS OF EACH YEAR WERE ASSIGNED TO TWO GROUPS, WHICH GREW ON DIFFERENT FEEDING REGIMES. DURING THE GROWTH PERIOD, THE LEVELS OF INSULIN, THYROXIN (T4) AND TRIIDOTHYRONIN (T3) IN THEBLOOD SERUM WERE MEASURED. OESTRUS WAS DETECTED DAILY BY TEASER RAMS AND THE OVARIAN ACTIVITY WAS MONITORED BY PROGESTERONE CONCENTRATION IN BLOOD SAMPLES COLLECTED TWICE WEEKLY. PROGESTERONE AND OESTRADIOL PROFILES AROUND SECOND PUBERTAL OVULATION WERE ALSO DETERMINED BY DAILY BLOOD SAMPLING AND OVULATION RATE WAS ASSESSED BY LAPAROSCOPY AT FOUR DEFINED OESTRUS CYCLES. ALL THE EWES LAMBS OFBOTH EXPERIMENTAL YEARS WERE BRED AT THE SECOND EXPERIMENTAL YEAR","ΜΕΛΕΤΗ ΤΗΣ ΕΠΙΔΡΑΣΗΣ ΤΟΥ ΕΠΙΠΕΔΟΥ ΔΙΑΤΡΟΦΗΣ ΣΤΑ ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ ΤΗΣ ΗΒΗΣ ΚΑΙ ΤΗΣΠΡΩΤΗΣ ΟΙΣΤΡΙΚΗΣ ΠΕΡΙΟΔΟΥ ΣΕ ΔΥΟ ΕΛΛΗΝΙΚΕΣ ΦΥΛΕΣ ΠΡΟΒΑΤΟΥ, ΤΗΝ ΧΙΟΥ ΚΑΙ ΤΗΝ ΚΑΡΑΓΚΟΥΝΙΚΗ. ΧΡΗΣΙΜΟΠΟΙΗΘΗΚΑΝ ΣΥΝΟΛΙΚΑ 80 ΘΗΛΥΚΑ ΑΡΝΙΑ, ΠΟΥ ΕΙΧΑΝ ΓΕΝΝΗΘΕΙ ΣΕ ΔΥΟ ΣΥΝΕΧΟΜΕΝΑ ΠΕΙΡΑΜΑΤΙΚΑ ΕΤΗ 1984 ΚΑΙ 1985. ΟΙ ΑΜΝΑΔΕΣ ΤΟΥ ΚΑΘΕ ΠΕΙΡΑΜΑΤΙΚΟΥ ΕΤΟΥΣ ΧΩΡΙΣΘΗΚΑΝ ΤΥΧΑΙΑ ΣΕ ΔΥΟ ΟΜΑΔΕΣ ΣΤΙΣ ΟΠΟΙΕΣ ΕΦΑΡΜΟΣΘΗΚΑΝ ΔΙΑΦΟΡΕΤΙΚΑ ΕΠΙΠΕΔΑ ΔΙΑΤΡΟΦΗΣ ΚΑΤΑ ΤΗΝ ΑΝΑΠΤΥΞΗ, ΟΠΟΤΕ ΚΑΙ ΜΕΤΡΗΘΗΚΑΝ ΤΑ ΕΠΙΠΕΔΑ ΤΗΣ ΙΝΣΟΥΛΙΝΗΣ ΤΗΣ ΘΥΡΟΞΙΝΗΣ (Τ4) ΚΑΙ ΤΗΣ ΤΡΙΙΩΔΟΘΥΡΟΝΙΝΗΣ (Τ3) ΣΤΟ ΑΙΜΑ. H ΩΟΘΗΚΙΚΗ ΔΡΑΣΤΗΡΙΟΤΗΤΑ ΠΑΡΑΚΟΛΟΥΘΗΘΗΚΕ ΜΕ ΑΝΑΛΥΣΕΙΣ ΠΡΟΓΕΣΤΕΡΟΝΗΣ ΣΤΟ ΑΙΜΑ ΔΥΟ ΦΟΡΕΣ ΤΗ ΒΔΟΜΑΔΑ ΕΝΩ ΚΑΘΗΜΕΡΙΝΑ ΓΙΝΟΤΑΝ ΑΝΙΧΝΕΥΣΗ ΤΩΝ ΟΙΣΤΡΩΝ ΜΕ ΚΡΙΟ. ΣΤΟ ΔΙΑΣΤΗΜΑ ΜΕΤΑΞΥ ΤΩΝ ΔΥΟΠΡΩΤΩΝ ΟΙΣΤΡΙΚΩΝ ΚΥΚΛΩΝ ΜΕΤΡΗΘΗΚΑΝ ΚΑΘΗΜΕΡΙΝΑ ΤΑ ΕΠΙΠΕΔΑ ΤΗΣ ΠΡΟΓΕΣΤΕΡΟΝΗΣ ΚΑΙΤΗΣ ΟΙΣΤΡΑΔΙΟΛΗΣ ΣΤΟ ΑΙΜΑ, ΕΝΩ ΣΕ ΟΡΙΣΜΕΝΟΥΣ ΟΙΣΤΡΙΚΟΥΣ ΚΥΚΛΟΥΣ ΣΤΗΝ ΕΝΑΡΞΗ ΚΑΙ ΣΤΟ ΜΕΣΟ ΤΗΣ ΟΙΣΤΡΙΚΗΣ ΠΕΡΙΟΔΟΥ, ΕΞΕΤΑΣΘΗΚΑΝ ΟΙ ΩΟΘΗΚΕΣ ΜΕ ΛΑΠΑΡΟΣΚΟΠΗΣΗ. ΟΛΕΣ ΟΙ ΑΜΝΑΔΕΣ ΟΧΕΥΤΗΚΑΝ ΣΤΟ ΔΕΥΤΕΡΟ ΠΕΙΡΑΜΑΤΙΚΟ ΕΤΟΣ ΚΑΙ ΜΕΤΡΗΘΗΚΑΝ ΟΙ ΑΝΑΠΑΡΑΓΩΓΙΚΕΣ ΚΑΙ ΠΑΡΑΓΩΓΙΚΕΣ ΤΟΥΣ ΑΠΟΔΟΣΕΙΣ."]},{"key":"dc:title","label":"Title","values":["ΗΛΙΚΙΑ ΤΗΣ ΗΒΗΣ ΚΑΙ ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ ΤΗΣ ΠΡΩΤΗΣ ΟΙΣΤΡΙΚΗΣ ΠΕΡΙΟΔΟΥ ΑΜΝΑΔΩΝ ΤΩΝ ΦΥΛΩΝ ΧΙΟΥ ΚΑΙ ΚΑΡΑΓΚΟΥΝΙΚΗΣ ΣΕ ΣΧΕΣΗ ΜΕ ΤΟ ΕΠΙΠΕΔΟ ΔΙΑΤΡΟΦΗΣ","PUBERTY ATTAINMENT AND CHARACTERISTICS OF FIRST BREEDING SEASON IN EWE LAMBS OFCHIOS AND KARAGOUNIKI BREEDS RAISED ON TWO PLANES OF NUTRITION"]}]}],"canonical_facts":{"dc:creator":["Μπιζέλης, Ιωσήφ"],"dc:date":["1989"],"dc:description":["STUDY OF THE INFLUENCE OF THE FEEDING LEVEL ON THE CHARACTERISTICS OF PUBERTY AND THE FIRST BREEDING SEASON IN TWO GREEK SHEEP BREEDS, THOSE OF CHIOS AND KARAGOUNIKI. A TOTAL OF EIGHTY FEMALE LAMBS WERE USED, WHICH HAVE BEEN BORN IN TWO CONSECUTIVE EXPERIMENTAL YEARS, 1984 AND 1985. THE EWE LAMBS OF EACH YEAR WERE ASSIGNED TO TWO GROUPS, WHICH GREW ON DIFFERENT FEEDING REGIMES. DURING THE GROWTH PERIOD, THE LEVELS OF INSULIN, THYROXIN (T4) AND TRIIDOTHYRONIN (T3) IN THEBLOOD SERUM WERE MEASURED. OESTRUS WAS DETECTED DAILY BY TEASER RAMS AND THE OVARIAN ACTIVITY WAS MONITORED BY PROGESTERONE CONCENTRATION IN BLOOD SAMPLES COLLECTED TWICE WEEKLY. PROGESTERONE AND OESTRADIOL PROFILES AROUND SECOND PUBERTAL OVULATION WERE ALSO DETERMINED BY DAILY BLOOD SAMPLING AND OVULATION RATE WAS ASSESSED BY LAPAROSCOPY AT FOUR DEFINED OESTRUS CYCLES. ALL THE EWES LAMBS OFBOTH EXPERIMENTAL YEARS WERE BRED AT THE SECOND EXPERIMENTAL YEAR","ΜΕΛΕΤΗ ΤΗΣ ΕΠΙΔΡΑΣΗΣ ΤΟΥ ΕΠΙΠΕΔΟΥ ΔΙΑΤΡΟΦΗΣ ΣΤΑ ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ ΤΗΣ ΗΒΗΣ ΚΑΙ ΤΗΣΠΡΩΤΗΣ ΟΙΣΤΡΙΚΗΣ ΠΕΡΙΟΔΟΥ ΣΕ ΔΥΟ ΕΛΛΗΝΙΚΕΣ ΦΥΛΕΣ ΠΡΟΒΑΤΟΥ, ΤΗΝ ΧΙΟΥ ΚΑΙ ΤΗΝ ΚΑΡΑΓΚΟΥΝΙΚΗ. ΧΡΗΣΙΜΟΠΟΙΗΘΗΚΑΝ ΣΥΝΟΛΙΚΑ 80 ΘΗΛΥΚΑ ΑΡΝΙΑ, ΠΟΥ ΕΙΧΑΝ ΓΕΝΝΗΘΕΙ ΣΕ ΔΥΟ ΣΥΝΕΧΟΜΕΝΑ ΠΕΙΡΑΜΑΤΙΚΑ ΕΤΗ 1984 ΚΑΙ 1985. ΟΙ ΑΜΝΑΔΕΣ ΤΟΥ ΚΑΘΕ ΠΕΙΡΑΜΑΤΙΚΟΥ ΕΤΟΥΣ ΧΩΡΙΣΘΗΚΑΝ ΤΥΧΑΙΑ ΣΕ ΔΥΟ ΟΜΑΔΕΣ ΣΤΙΣ ΟΠΟΙΕΣ ΕΦΑΡΜΟΣΘΗΚΑΝ ΔΙΑΦΟΡΕΤΙΚΑ ΕΠΙΠΕΔΑ ΔΙΑΤΡΟΦΗΣ ΚΑΤΑ ΤΗΝ ΑΝΑΠΤΥΞΗ, ΟΠΟΤΕ ΚΑΙ ΜΕΤΡΗΘΗΚΑΝ ΤΑ ΕΠΙΠΕΔΑ ΤΗΣ ΙΝΣΟΥΛΙΝΗΣ ΤΗΣ ΘΥΡΟΞΙΝΗΣ (Τ4) ΚΑΙ ΤΗΣ ΤΡΙΙΩΔΟΘΥΡΟΝΙΝΗΣ (Τ3) ΣΤΟ ΑΙΜΑ. H ΩΟΘΗΚΙΚΗ ΔΡΑΣΤΗΡΙΟΤΗΤΑ ΠΑΡΑΚΟΛΟΥΘΗΘΗΚΕ ΜΕ ΑΝΑΛΥΣΕΙΣ ΠΡΟΓΕΣΤΕΡΟΝΗΣ ΣΤΟ ΑΙΜΑ ΔΥΟ ΦΟΡΕΣ ΤΗ ΒΔΟΜΑΔΑ ΕΝΩ ΚΑΘΗΜΕΡΙΝΑ ΓΙΝΟΤΑΝ ΑΝΙΧΝΕΥΣΗ ΤΩΝ ΟΙΣΤΡΩΝ ΜΕ ΚΡΙΟ. ΣΤΟ ΔΙΑΣΤΗΜΑ ΜΕΤΑΞΥ ΤΩΝ ΔΥΟΠΡΩΤΩΝ ΟΙΣΤΡΙΚΩΝ ΚΥΚΛΩΝ ΜΕΤΡΗΘΗΚΑΝ ΚΑΘΗΜΕΡΙΝΑ ΤΑ ΕΠΙΠΕΔΑ ΤΗΣ ΠΡΟΓΕΣΤΕΡΟΝΗΣ ΚΑΙΤΗΣ ΟΙΣΤΡΑΔΙΟΛΗΣ ΣΤΟ ΑΙΜΑ, ΕΝΩ ΣΕ ΟΡΙΣΜΕΝΟΥΣ ΟΙΣΤΡΙΚΟΥΣ ΚΥΚΛΟΥΣ ΣΤΗΝ ΕΝΑΡΞΗ ΚΑΙ ΣΤΟ ΜΕΣΟ ΤΗΣ ΟΙΣΤΡΙΚΗΣ ΠΕΡΙΟΔΟΥ, ΕΞΕΤΑΣΘΗΚΑΝ ΟΙ ΩΟΘΗΚΕΣ ΜΕ ΛΑΠΑΡΟΣΚΟΠΗΣΗ. ΟΛΕΣ ΟΙ ΑΜΝΑΔΕΣ ΟΧΕΥΤΗΚΑΝ ΣΤΟ ΔΕΥΤΕΡΟ ΠΕΙΡΑΜΑΤΙΚΟ ΕΤΟΣ ΚΑΙ ΜΕΤΡΗΘΗΚΑΝ ΟΙ ΑΝΑΠΑΡΑΓΩΓΙΚΕΣ ΚΑΙ ΠΑΡΑΓΩΓΙΚΕΣ ΤΟΥΣ ΑΠΟΔΟΣΕΙΣ."],"dc:identifier":["10.12681/eadd/1218","http://hdl.handle.net/10442/hedi/1218"],"dc:language":["gre"],"dc:publisher":["Γεωργικό Πανεπιστήμιο Αθηνών","Agricultural University of Athens"],"dc:subject":["BREEDING SEASON","Growth","Hormones","Nutrition","Puberty","Reproduction","Sheeps","Αναπαραγωγή","Ανάπτυξη","Διατροφή","ΗΒΗ","ΟΙΣΤΡΙΚΗ ΠΕΡΙΟΔΟΣ","Ορμόνες","Πρόβατα","Γεωπονικές Επιστήμες και Κτηνιατρική","Agricultural and Veterinary Sciences","Επιστήμη Ζωικής Παραγωγής","Animal and Dairy Science"],"dc:title":["ΗΛΙΚΙΑ ΤΗΣ ΗΒΗΣ ΚΑΙ ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ ΤΗΣ ΠΡΩΤΗΣ ΟΙΣΤΡΙΚΗΣ ΠΕΡΙΟΔΟΥ ΑΜΝΑΔΩΝ ΤΩΝ ΦΥΛΩΝ ΧΙΟΥ ΚΑΙ ΚΑΡΑΓΚΟΥΝΙΚΗΣ ΣΕ ΣΧΕΣΗ ΜΕ ΤΟ ΕΠΙΠΕΔΟ ΔΙΑΤΡΟΦΗΣ","PUBERTY ATTAINMENT AND CHARACTERISTICS OF FIRST BREEDING SEASON IN EWE LAMBS OFCHIOS AND KARAGOUNIKI BREEDS RAISED ON TWO PLANES OF NUTRITION"],"dc:type":["PhD Thesis"]},"updated_at":"2026-07-24T02:24:46Z"}