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زمانی مقدم, دکتر, Hosseini, Farzaneh, Hassanpour, Hossein, Soroori, Sarang, Yadegari, Mehrdad, Askari, Elaheh. (1391). Effects of long-term calcium deficiency on the electro-and echocardiography in laying hens. , 6(2), 105-112. doi: 10.22059/ijvm.2012.28955
دکتر زمانی مقدم; Farzaneh Hosseini; Hossein Hassanpour; Sarang Soroori; Mehrdad Yadegari; Elaheh Askari. "Effects of long-term calcium deficiency on the electro-and echocardiography in laying hens". , 6, 2, 1391, 105-112. doi: 10.22059/ijvm.2012.28955
زمانی مقدم, دکتر, Hosseini, Farzaneh, Hassanpour, Hossein, Soroori, Sarang, Yadegari, Mehrdad, Askari, Elaheh. (1391). 'Effects of long-term calcium deficiency on the electro-and echocardiography in laying hens', , 6(2), pp. 105-112. doi: 10.22059/ijvm.2012.28955
زمانی مقدم, دکتر, Hosseini, Farzaneh, Hassanpour, Hossein, Soroori, Sarang, Yadegari, Mehrdad, Askari, Elaheh. Effects of long-term calcium deficiency on the electro-and echocardiography in laying hens. , 1391; 6(2): 105-112. doi: 10.22059/ijvm.2012.28955

Effects of long-term calcium deficiency on the electro-and echocardiography in laying hens

Iranian Journal of Veterinary Medicine
مقاله 7، دوره 6، شماره 2 - شماره پیاپی 1177763، شهریور 2012، صفحه 105-112    اصل مقاله (1.13 M)
شناسه دیجیتال (DOI): 10.22059/ijvm.2012.28955
نویسندگان
دکتر زمانی مقدم1؛ Farzaneh Hosseini1؛ Hossein Hassanpour2؛ Sarang Soroori3؛ Mehrdad Yadegari4؛ Elaheh Askari1
1گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه شهرکرد
2بخش فیزیولوژی، دانشکده دامپزشکی دانشگاه شهرکرد
3گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه تهران
4گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه آزاد اسلامی واحد شهرکرد
چکیده
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<0.05) increased in the Ca-deficient group II (in lead II) at 36 weeks of age in compared to control. There were also elevations of the QRS wave amplitudes in 28 and 36 weeks of age at two Ca-deficient groups (leads II, III, aVR, aVL and aVF) but were only significant (p<0.05) in Ca-deficient group II (leads II and aVF) in compared to control. Left ventricular free wall diameter at end-systole were significantly (p<0.05) increased in the Ca-deficient group II at 28 and 36 weeks of age compared to the control group. Inter-ventricular septal diameters at end-systole were decreased in two Ca-deficient groups at 28 and 36 weeks (p<0.05). Left ventricular free wall diameter at post-mortem were significant-ly (p<0.05) increased in two Ca-deficient groups at 36 weeks of age compared to the control group. CONCLUSIONS: From these results, it can be suggested that long-term dietary calcium deficiency alters in electro- and echocardiographic parameters, which could reflect pathological left ventricular hypertrophy in the laying hens.
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