Avaliação dos efeitos do tratamento com zinco orgânico sobre a reprodução e no comportamento de ratas (Rattus norvegicus)
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Data
2007-06
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This article aims at evaluating the effects of the organic zinc treatment over the reproductive performance and
behavior through forced swimming tests, open fi eld, and barbiturate-induced sleep. 21 female Wistar rats (Rattus norvegicus)
were used, distributed into three groups of seven animals, placed in individual boxes, and submitted to different treatments:
SZn (control - without zinc), ZnP (zinc for intramuscular administration), and ZnO (organic zinc in the diet, 5 mg/kg). Statistic
differences were not observed (p > 0,05) among the treatments SZn (10.4 ± 2.4 nestlings), ZnP (6.9 ± 2.6 nestlings), and ZnO
(3.3 ± 2.6 nestlings), in relation to the number of nestlings. In the behavioral despair test, the immobility time of the animals
treated with SZn (91.1 ± 15 seg.), ZnP (71.2 ± 17 seg.), and ZnO (79.9 ± 20 seg) did not present any statistic differences (p >
0,05). Statistic differences (p > 0,05) were neither present at the induction time (SZn = 6.6 ± 2; ZnP = 5.3 ± 2; ZnO = 3.6 ±
0.3 min), nor in the recovery time (SZn = 295 ± 15; ZnP = 320 ± 34; ZnO = 355 ± 38 min) at the hypno-sedative evaluation.
The other behavioral parameters evaluated (number of risings, self-cleaning, time in the periphery, and number of invaded
squares) were not altered as well. It was concluded that zinc, in its organic form, either parenterally or orally administered,
neither infl uences the reproduction nor the behavior of female rats.
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Zinco, Ratas, Comportamento, Reprodução animal, Zinc, Female rats, Animals reproduction, Behavior
Citação
JORGE, Lorena Pereira Marum et al. Avaliação dos efeitos do tratamento com zinco orgânico sobre a reprodução e no comportamento de ratas (Rattus norvegicus). Arquivos de Ciências Veterinárias e Zoologia da Unipar, Umuarama, v. 10, n. 1, p. 15-20, jan./jun. 2007.