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Effects of Dystocia on the Postpartum Complications, Milk Production and Reproductive Performance in Dairy Cows

한국임상수의학회지 제33권 제2호, 2016.4, 87-92 (6 pages)
DOI :10.17555/jvc.2016.04.33.2.87
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초록
This field study investigated the effects of dystocia on the postpartum complications, milk production, and reproductive performance in Holstein dairy cows. Calving difficulty was scored on a rank scale of 1 to 5. Cows with a calving score of three or higher were judged to have dystocia. The cows (n = 565) were categorized based on the presence (n = 61) or absence (n = 504, control) of dystocia. The incidence of retained placenta (45.9% vs. 16.3%), metritis (39.3% vs. 17.1%), endometritis (47.5% vs. 16.3%) and pyometra (9.8% vs. 1.2%) were greater in cows from the dystocia group than those from the control group (p < 0.0001); however, there was no difference in the incidence of metabolic disorders (32.8% vs. 31.0%) between the two groups (p > 0.05). The prevalence of culling was higher in cows from the dystocia group (26.2%) than in those from the control group (14.5%, p < 0.05). During the 5-month postpartum period, milk production was lower (p < 0.05) in cows from the dystocia group than in those from the control group. Furthermore, the hazard of insemination by 150 days in milk (DIM) was lower in cows from the dystocia group (hazard ratio [HR] = 0.64, p < 0.005) than in those from the control group. Logistic regression analysis revealed that the odds ratio for the probability of pregnancy after the first artificial insemination was 0.36 times (p < 0.05) higher in cows from the dystocia group than in those from the control group. The hazard of pregnancy by 360 DIM was lower in cows from the dystocia group (HR = 0.45, p = 0.0001) than in those from the control group. In conclusion, dystocia resulted in increased postpartum complications, and decreased milk production and reproductive performance in Holstein dairy cows, leading to increased culling.

목차
Abstract
Introduction
Materials and Methods
Results
Discussion
References
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  1. Atashi H, Abdolmohammadi AR, Assadi A, Akhlaghi A, Dadpasand M, Jafari Ahangari Y. Using an incomplete gamma function to quantify the effect of dystocia on the lactation performance of Holstein dairy cows in Iran. J Dairy Sci 2012; 95: 2718-2722.

  2. Benzaquen ME, Risco CA, Archbald LF, Melendez P, Thatcher M-J, Thatcher WW. Rectal temperature, calving-related factors, and incidence of puerperal metritis in postpartum dairy cows. J Dairy Sci 2007; 90: 2804-2814.

  3. Berry DP, Lee JM, Macdonald KA, Roche JR. Body condition score and body weight effects on dystocia and stillbirths and consequent effects on postcalving performance. J Dairy Sci 2007; 90: 4201-4211.

  4. Dekkers JCM. Optimal breeding strategies for calving ease. J Dairy Sci 1994; 77: 3441-3453.

  5. Dematawewa CMB, Berger PJ. Effect of dystocia on yield, fertility, and cow losses and an economic evaluation of dystocia scores for Holsteins. J Dairy Sci 1998; 80: 754-761.

  6. Djemali M, Freeman AE, Berger PJ. Reporting of dystocia scores and effects of dystocia on production, days open, and days dry from dairy herd improvement data. J Dairy Sci 1987; 70: 2127-2131.

  7. Dohmen MJW, Joop K, Sturk A, Bols PEJ, Lohuis JACM. Relationship between intra-uterine bacterial contamination, endotoxin levels and the development of endometritis in postpartum cows with dystocia or retained placenta. Theriogenology 2000; 54: 1019-1032.

  8. Domecq JJ, Skidmore AL, Lloyd JW, Kaneene JB. Relationships between body condition scores and milk yield in a large dairy herd of high yielding Holstein cows. J Dairy Sci 1997; 80: 101-112.

  9. Duffield TF, Sandals D, Leslie KE, Lissemore K, McBride BW, Lumsden JH, Dick P, Bagg R. Efficacy of monensin for the prevention of subclinical ketosis in lactating dairy cows. J Dairy Sci 1998; 81: 2866-2873.

  10. Eaglen SAE, Coffey MP, Woolliams JA, Mrode R, Wall E. Phenotypic effects of calving ease on the subsequent fertility and milk production of dam and calf in UK Holstein- Friesian heifers. J Dairy Sci 2011; 94: 5413-5423.

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