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- Title
AGE MORPHOMETRY OF SOME INTERNAL ORGANS IN COMMON PHEASANT (PHASIANUS COLCHICUS COLCHICUS).
- Authors
Yovchev, D.; Dimitrov, R.; Kostov, D.; Vladova, D.
- Abstract
AIM: To determine some morphometrical parameters of colchis pheasant internal organs. MATERIALS: We studied 30 colchis pheasants, divided in three groups (each group was consisted of 5 males and 5 females) at 15, 17 and 19 weeks of age. METHODS: Following euthanasia and evisceration, the digestive tract was separated in segments, corresponded to its different parts (esophagus, crop, proventriculus, gizzard, small intestine, caeca and rectum). The weight of digestive structures, heart, liver, spleen and testicles was determined by electronic scale and the length of the tubular digestive organs was measured with ruler and graph paper. The results were collected and recorded. The obtained data was processed via variable statistical methods. RESULTS: The body weight of the female birds was significantly lower than that of the male ones. In males the gizzard's percent decreased significantly through the whole investigative period. The proventriculus and heart proportions were almost the same with age advancing. Females were with heavier livers and spleens than males, but the spleen difference was without statistical significance. The length of the crop, esophagus and intestines had lower values in males, compared to females CONCLUSION: The older male and female pheasants had significantly shorter tubular digestive organs. The youngest male individuals had heavier liver, compare to the females. These alterations of the morphometrical parameters in the pheasant internal organs are provoked by sex dimorphism influence.
- Subjects
RING-necked pheasant; PHEASANTS; EUTHANASIA; BODY weight; SEXUAL dimorphism in animals
- Publication
Trakia Journal of Sciences, 2012, Vol 10, Issue 3, p48
- ISSN
1312-1723
- Publication type
Article