Background: Soil and plant contamination in copper exposure causes chronic copper poisoning (CCP) in animals following the consumption of plants in these soils. Objectives: The present study was carried out on 10 clinically affected copper poisoned cases (in each season) from autumn 2015 to the end of summer 2016, in four seasons in Kerman province to evaluate the seasonal effects of CCP in sheep. Methods: All samples were taken from clinically affected cases of copper poisoning that were then necropsied and the poisoning was confirmed by pathognomic pathological findings and serum copper concentration. Samples from liver, lung, kidney, heart and spleen were collected immediately after death and their copper concentration was measured. Results: The highest levels of copper in lung, heart, spleen and kidney were observed in the summer. Liver had the highest amounts of copper in spring and the levels of copper in wool and serum were detected in winter. The copper levels of liver and kidney were positively correlated in autumn, but the copper levels in these tissues were negatively correlated in both spring and winter. Conclusions: Severity of the copper toxicity (judged by the liver copper concentration) is season-dependent in sheep and seasonal variations affect this toxicity. Environmental climate and stressors may be the main causes of copper contents of different tissues and the liver is the main organ to reserve copper in poisoned sheep.

BACKGROUND: Vitamin A which is found in different tissuesand organs plays a particular role in detecting clinical signs invarious deficiency conditions. However, sometimes the marginaldeficiency is present in a way that clinical signs are not visible butperformance defects, such as infertility is seen. OBJECTIVES: Inthis study, the normal baseline levels of vitamin Aand β-carotene inclinically healthy camels (Camelus dromedarius) in the Yazdprovince were investigated. METHODS: A total of 168 Iraniancamels of both sexes were sampled from February 2009 to July2010. Spectrophoto-metry was used for measuring the serumvalues. RESULTS: The mean±SE concentration of vitamin Aand β-carotene were 63.9±4.7 and 9±1.1 μg/dL, respectively. Although,the β-carotene concentr-ation was significantly higher in summer,vitamin Awas not influenced by season. No significant differencein the serum levels of the measured parameters was observed indifferent ages and sexes. CONCLUSIONS: The results of this study,for the first time, indicate the concentration of vitamin A and β-carotene in the camels in Iran. This finding can be used as a referenceguide for evaluation of the deficiency or excess of vitamin Aand β-carotene in camels in Iran. Furthermore, due to the lower levels ofvitamin A and β-carotene in Iranian dromedaries during winter,supplementary feeding of vitamin A is recommended during thisseason.

Background: The hair goat of Anatolia is a breed that has adapted to rugged and mountainous areas and is known to be very resistant to diseases. As the world faces the problem of climate change, we believe that knowing the hematological characteristics of hair goats will provide great benefits for goat breeding.Objectives: This study was performed to determine possible differences in the blood parameters of adult (male and female) hair goats during and out of the breeding season.Methods: For this purpose, blood samples were taken from clinically healthy adult male and female hair goats (n=36, 3-4 years old) in the spring and autumn seasons. Regarding the whole blood, white blood cell (WBC), red blood cell (RBC), hemoglobin (Hb), hematocrit (Hct), mean red blood cell volume (MCV), mean red blood cell hemoglobin (MCH), average red blood cell hemoglobin concentration (MCHC) and red blood cell distribution width (RDW) values were determined. Results: In the study, MCV values in males were not significantly (P≥0.05) different between spring and autumn, while all other parameters showed significant differences (P≤0.05). In females, WBC, RBC, Hb, Hct, and RDW blood values were higher in the autumn (estrus period) than in the spring (anestrus period), and the differences were found to be significant (P≤0.05). Comparing males and females between the estrus and anestrus seasons, WBC and MCHC were found to be significantly different (P≤0.05) between males and females in May. In contrast, the difference between other parameters was not significant. In October (estrus season), the MCV value was not significantly different between males and females; however, all other parameters were significantly different (P≤0.05). Conclusion: As a result, there were significant differences in hematological parameters of hair goats based on gender and the breeding season.