Effects of long-term calcium deficiency on the electro-and echocardiography in laying hens
2012
زمانی مقدم, دکتر | Hosseini, Farzaneh | Hassanpour, Hossein | Soroori, Sarang | Yadegari, Mehrdad | Askari, Elaheh
Background: Ca is the most important minerals in the body that plays a key rols in the physiological activities, anzymatic reaction and the regulation of myocardial contraction and relax-ation. Ca deficiency causes the heart failure and decrease cardiac contractility. OBJECTIVES: To determine the effects of long-term dietary calcium deficiency on the heart function of layer hens based on the electro- and echocardiography. METHODS: Ninety Hyline W36 hens were kept for 21 weeks and fed by rations with different amounts of calcium. At 20, 28 and 36 weeks of age, electrocardio-graphic, echocardiographic and post-mortem left ventricular parameters were assessed. RESULTS: S wave amplitude was significantly (p
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