Article history: Received: 27-03-2017, Accepted: 03-08-2017, Published online: 01-09-2017
Corresponding author: Ambika Prasad Khadanga Mahapatra
E-mail: email@example.comCitation: Pradhan RR, Mahapatra APK, Mohapatra S, Jyotiranjan T, Kundu AK (2017) Electrocardiographic reference values and configuration of electrocardiogram waves recorded in Black Bengal goats of different age groups, Veterinary World, 10(9): 1020-1025.
Aim: A study on age-related electrocardiographic (ECG) changes was conducted on 20 apparently healthy Black Bengal goats with no history of cardiac disorders during 2015-2016.
Materials and Methods: The goats selected for the study belonged to four different age groups; Group 1: Goats up to 6 months of age, Group 2: Above 6 months and below 1 year of age, Group 3: Above 1 year and below 2 years of age, and Group 4: Above 2 years of age. The ECG was recorded with the animals in standing position using a 12-lead standard ECG recorder (Model-Cardiart-108 MK VII, manufactured by BPL, India). The paper speed was set to 25 mm/s with the sensitivity of the machine was adjusted at 1 (1 cm=mV).
Results: The ECG parameters were compared within different age groups, and the data were analyzed statistically using SPSS 16.0 taking a significant level of 95% (p<0.05) in all cases. The lead-I ECG revealed a significant difference in amplitude of QRS complex, PR interval, QT interval, RR interval, PQ segment, ST segment, TP segment, and heart rate among some age groups. In bipolar limb lead-II, the amplitude of T-wave, RR interval, ST segment, TP segment, and heart rate was a significant difference among some age groups. Lead-III presented significant difference among age groups in different parameters such as QRS complex duration, T-wave duration, RR interval, ST segment, TP segment, and heart rate.
Conclusion: The study concluded that there is a significant variation in the ECG parameters both in terms of values and configuration of ECG waves when age is taken into consideration. The results of the study might be used as a reference value for field veterinarians.
Keywords: age, Black Bengal goats, electrocardiogram.
1. Guyton, A.C. and Hall, J.E. (2006) Textbook of Medical Physiology. 11th ed., Vol. 11. Elsevier, Saunders, Philadelphia, PA, Pennsylvania. p123.
2. Rezakhani, A., Paphan, A.A. and Shekharfroush, A. (2004) Analysis of base apex lead electrocardiograms of normal dairy cows. Vet. Arh., 74(5): 351-358.
3. Pourjafar, M., Badiei, K., Chalmeh, A.A., Sanati, A.R. and Sabouri, H. (2011) Comparison of cardiac arrhythmias between late pregnancy and early post-partum periods in clinically healthy Iranian fat-tailed sheep. Pak. Vet. J., 31(4): 309-312.
4. Andrassy, G., Szabo, A., Dunai, A., Bengtson, J.R. and Levy, D. (2005) Heart rate correction of the QT interval during exercise. Cardiol. Hung, 35: 17-20.
5. Haque, M.N., Husain, S.S., Khandoker, M.A.M., Mia, M.M. and Apu, A.S. (2013) Selection of black Bengal buck based on some reproductive performance of their progeny at semi-intensive rearing system. J. Agric. Sci., 5(8): 142-152. [Crossref]
6. Ahmed, J.A. and Sanyal, S. (2008) Electrocardiographic studies in Garol Sheep and black Bengal goats. Res. J. Cardiol., 1(1): 1-8. [Crossref]
7. Atmaca, M., Simsek, O. and Emre, B. (2014) Some electrocardiographic values of Angora goats. Ankara Univ. Vet. Fak. Derg., 61: 15-19. [Crossref]
8. Mohan, N.H., Niyogi, D. and Singh, H.N. (2005) Analysis of normal electrocardiograms of Jamunapari goats. J. Vet. Sci., 6: 295-298. [PubMed]
9. Montes, A.M., Bernal, L.J., Bayon, A., Fernandez-Del Palacio, M.J., Sotillo, J., Ayala, I. and Trenti, F. (1994) A Study of ECG in Goats. Proceedings. 18th World Buiatrics Congress Italy. Vol. 18. p1201-1024.
10. Fakour, S., Mokhber Dezfuli, M.R., Nadalian, M.G., Rezakhani, A. and Lotfollah, Z.S. (2013) Electrocardiographic parameters of Markhoz goat using base apex lead and six standard limb leads. Iran. J. Vet. Res., 14(3): 241-244.
11. Mohapatra, S., Dwivedy, S., Mohapatra, S.S., Mahapatra, A.P.K. and Kundu, A.K. (2015) Comparison of electrocardiogram between young and adult male Ganjam sheep of Odisha. Indian Vet. J., 92(6): 66-68.
12. Mir, S.A., Nazki, A.R. and Raina, R. (2000) Comparative electrocardiographic studies and differing effects of pentazocine on ECG, heart and respiratory rates in young sheep and goats. Small Rumin. Res., 37: 13-17. [Crossref]
13. Luthra, A. (2004) ECG Made Easy. Vol. 3. Jaypee Publications, New Delhi. p100.
14. Radostits, O.M., Gay, C.C., Hinchcliff, K.W. and Constable, P.D. (2007) Veterinary Medicine: A Text Book of the Diseases of Cattle, Horses, Sheep, Pigs and Goats. Vol. 10. Elsevier, St. Louis. p399-438.15. Pourjafar, M., Badiei, K., Chalmeh, A.A., Sanati, A.R., Shahbazi, A., Badkobeh, M. and Bagheri, M.H. (2012) Age-related cardiac arrhythmias in clinically healthy Iranian Najdi goats. Bulg. J. Vet. Med., 15(1): 37-43.