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[Survey of fetal disposition and different contributing factors in dystocia of Holstein dairy cattle]
Journal of the Faculty of Veterinary Medicine-University of Tehran. 2004; 59 (1): 91-96
en Persa | IMEMR | ID: emr-171048
ABSTRACT
1- Survey of dystocia due to Malpresentation, Malposition and Malposture of fetus during calving 2- The effect of factors contributing to dystocia due to fetal Malpresentaion, Malposition and Malposture such as age and number of parturition of dam, season of parturition sex and weight of calves. A total of 2140 single calvings. Cross sectional prospective. Fetal presentation, position and posture are used to indicate the condition of calving. In a normal calving, the presentation position and posture are Anterior- longitudinal, dorso- sacral and extended posture, respectively. During 4 years survey [1988- 1992] 2140 single calvings were recorded and used to analyze the correlation between the fetal disposition due to the above fetal condition and age and number of parturition of dam season of parturition, sex and weight of calves. The data were analyzed by using Chi- square statistical method. There were 108[5.04%] faulty presentation, position and posture out of 2140 calvings. The incidence of malpresentation, malposition and malposture were 3.27%, 0.09% and 1.68%, respectively. Posterior- longitudinal [No 70, 3.27%], Dorso pubis [No 2, 0.09%] and lateral head deviation [No 18, 0.84%] were the highest Malpresentaion, Malposition and Malposture, respectively. Dams with 2 years old had the highest faulty disposition [31.48%] whereas it was observed that the 6 year old dams had the lowest [5.5%].The highest fetal disposition were observed in the first number of calving [31.42%] and the lowest was in the 5l parturition. It was observed that 65 [5.94%] male calves out of 1094 calving and 43[3.11%] out of 1046 calving had faulty condition. The average weight of calves with normal condition for male and female calves were 41.52 and 39.22 Kgs, respectively. But, calves with Malpresentation, Malposition and Malposture were 40.92, 50.3 and 53.3 Kgs for male calves whereas 39.39, 31.29 and 35.36 Kgs for female calves, respectively. The most abnormal conditions were in winter [28.7%] and the lowest [25.92%] were in autumn. There were no significant differences between fetal disposition and age of dam, parturition No. of dam, season of calving and weight of calves
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Índice: IMEMR (Mediterraneo Oriental) Idioma: Persa Revista: J. Fac. Vet. Med.-Univ. Teheran Año: 2004

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Índice: IMEMR (Mediterraneo Oriental) Idioma: Persa Revista: J. Fac. Vet. Med.-Univ. Teheran Año: 2004