نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه علوم دامی و طیور، دانشکده علوم دامی ، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران
2 گروه علوم دامی و طیور، دانشکده علوم دامی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.
3 گروه علوم دامی و طیور . دانشکده علوم دامی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، مازندران، ایران.
4 گروه علوم دامی و طیور، دانشکده علوم دامی شیراز، دانشگاه شیراز، شیراز، ایران.
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This research was conducted to evaluate the effect of the cold period on female Chukar partridges and its impact on reproductive traits and hematological parameters. A total of 104 adult breeding partridges were used in this study. The experimental treatments included a control group (without cold exposure) and a cold-exposed group. The research was carried out over 3 weeks in a completely randomized design with five repetitions in the control group and five repetitions in the cold-exposed group. The evaluation of reproductive parameters was performed at the end of the period, and the evaluation of hematological parameters was conducted once a week in three phases. The results of the analysis of reproductive indices showed that the cold period did not significantly differ in terms of egg production rate, fertility rate, and hatching rate compared to the control group (P>0.05). The heterophil-to-lymphocyte ratio significantly increased in different phases of the winter period compared to the control group (P<0.05). The total plasma protein, albumin, globulin, and hemoglobin levels after cold exposure in different blood sampling phases showed a significant increase compared to the control group (P<0.05). The findings of this study showed that cold exposure had a stimulating effect on the immune response, leading to a decrease in lymphocyte count and an increase in heterophil count. It is suggested that cold exposure may enhance immune responses and reduce egg production rates in Chukar partridges, possibly resulting in reproductive performance disorders.
کلیدواژه‌ها [English]
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