A Histomorphological and Histochemical changes of Postnatal Developmental in the Ovaries and Uterus of Local Rabbits (Oryctolagus cuniculus) in Duhok Province

Document Type : Original Article

Authors

1 Department of Theriogenology, Physiology and Anatomy, college of Veterinary Medicine, university of Duhok. Duhok. Iraq

2 Department of theriogenology, Physiology and Anatomy, College of Veterinary Medicine, University of Duhok, Duhok

3 ‎3Department of Anatomy and Histology, College of Veterinary Medicine, University of Mosul

Abstract

This study aimed to detect histomorphology and histochemical changes of the ovaries and uterus in local rabbits ‎‎(Oryctolagus cuniculus) during postnatal development from 7 to 150 days. Eighty rabbits were acquired from local ‎breeders and divided into 8 groups, with 10 rabbits selected for each age group. The rabbits were euthanized and ‎subsequently dissected. The ovaries and uterus were obtained and stored in a solution of 10% neutral buffered ‎formalin for preservation. Subsequently, the sample is subjected to standard histology procedures. Ultimately, 5 µm ‎slices were utilized and subjected to hematoxylin-eosin Masson Trichrome staining, as well as alcian blue and ‎periodic acid shift staining. The microscopic investigation revealed notable morphological changes in the ovaries ‎and uterus during the postnatal maturation of the young. The study discovered that the rabbit ovary, which was ‎between one week and six weeks old, consisted of follicles of type 1-5b. Nevertheless, G7 and G8 exhibited the ‎presence of sizable follicles categorized as type 6 and 7. This study detected a growth in all layers of the uterus, ‎especially in the tunica mascularis, throughout postnatal development. These findings indicate that young female ‎rabbits undergo significant developmental progress and changes after being weaned. This study determined that ‎pre-ovulatory follicles and Corpus luteum were present in mature female rabbits at the age of 4 months, suggesting ‎that these rabbits reached puberty at that age. The study concluded that the maturation of the follicles and uterus ‎in this breed based on the age of the individual.‎

Keywords

Egyptian Journal of Veterinary Sciences

Articles in Press, Accepted Manuscript
Available Online from 10 July 2024

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History

  • Receive Date: 22 May 2024
  • Revise Date: 24 June 2024
  • Accept Date: 06 July 2024

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