Abstract
The Black-and-White (BW) breed, which until recently had dominated in Europe, was replaced by the Holstein-Friesian (HF) breed. As a result, the incidence of dystocia has increased. Dystocia occurs most frequently in heifers, and it is associated with high calf weight and/or too narrow pelvic openings in heifers. The aim of this study was to evaluate retrospectively the effects of pelvic dimensions and rump angle on calving ease in two cattle breeds. The research was carried out in four barns where BW and HF cattle were used. The course of parturition was evaluated in 317 heifers (BW, n=169; HF, n=148) based on direct observations. Calves were weighed, external and internal pelvic measurements were performed (using the Rice pelvimeter), and rump angle was determined in heifers. Based on the course of parturition, heifers of both breeds were divided into easy calving (EC) and difficult calving (DC) groups. The frequency of DC was 24.3% in HF heifers and 13.1% in BW heifers. In comparison with DC heifers, EC heifers had a larger pelvic area, in particular the internal dimensions of the bony pelvis, and a higher rump angle. In comparison with BW heifers, HF heifers had a smaller rump angle, a narrower pelvis and a lower ratio of pelvic area to calf weight. High dystocia rates in HF heifers could result from a relatively large fetus size and a less preferable pelvic size and rump angle. High variation in the internal pelvic dimensions in HF heifers indicates that the incidence of dystocia can be reduced through selection for a larger pelvic size and the optimal rump angle.
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Bibliography
1. Bila L, Fourie PJ, Tyasi TL (2022) Using pelvic areas and linear body measurements in the selection for reduced dystocia rates in Sussex heifers. Indian J Anim Res 56: 928-932.
2. Bila L, Tyasi TL, Fourie P, Katikati A (2021) Classification and regression tree analysis to predict calving ease in Sussex heifers using pelvic area dimensions and morphological traits. J Adv Vet Anim Res 8: 164-172.
3. Gaafar HMA, Shamiah SM, El-Hamd MA, Shitta AA, El-Din MAT (2011) Dystocia in Friesian cows and its effects on postpartum re-productive performance and milk production. Trop Anim Health Prod 43: 229-234.
4. Gundelach Y, Essmeyer K, Teltscher MK, Hoedemaker M (2009) Risk factors for perinatal mortality in dairy cattle: cow and foetal fac-tors, calving process. Theriogenology 71: 901-909.
5. Holm DE, Webb EC, Thompson PN (2014) A new application of pelvis area data as culling tool to aid in the management of dystocia in heifers. J Anim Sci 92: 2296-303.
6. Johanson JM, Berger PJ (2003) Birth weight as a predictor of calving ease and perinatal mortality in Holstein cattle. J Dairy Sci 86: 3745-3755.
7. Johanson JM, Berger PJ, Tsuruta S, Misztal I (2011) A Bayesian threshold-linear model evaluation of perinatal mortality, dystocia, birth weight, and gestation length in a Holstein herd. J Dairy Sci 94: 450-460.
8. Kolkman I, Hoflack G, Aerts S, Murray RD, Opsomer G, Lips D (2009) Evaluation of the rice pelvimeter for measuring pelvic area in double muscled Belgian Blue cows. Livest Sci 121: 259-266.
9. Maeda T, Kitahara G, Osawa T (2022) Establishment of a method to predict dystocia due to physical imbalance between foetus and ma-ternal pelvis in Japanese black cattle. Reprod Domest Anim 57: 1029-1037.
10. Mee JF (2008) Prevalence and risk factors for dystocia in dairy cattle: A review. Vet J 176: 93-101.
11. Micke GC, Sullivan TM, Rolls PJ, Hasell B, Greer RM, Norman ST, Perry VEA (2010) Dystocia in 3-year-old beef heifers; relationship to maternal nutrient intake during early- and mid-gestation, pelvic area and hormonal indicators of placental function. Anim Reprod Sci 118: 163-170.
12. Nahkur E, Ernits E, Jalakas M, Järv E (2011) Morphological characteristics of pelves of Estonian Holstein and Estonian native breed cows from the perspective of calving. Anat Histol Embryol 40: 379-388.
13. Nogalski Z (2003) Relations between the course of parturition, body weights and measurements of Holstein-Friesian calves. Czech J Anim Sci 48: 51-59.
14. Nogalski Z, Mordas W (2012) Pelvic parameters in Holstein-Friesian and Jersey heifers in relation to their calving. Pak Vet J 32: 507-510.
15. Olson KM, Cassell BG, Mcallister AJ, Washburn SP (2009) Dystocia, stillbirth, gestation length, and birth weight in Holstein, Jersey, and reciprocal crosses from a planned experiment. J Dairy Sci 92: 6167-6175.
16. Steinbock L, Nasholm A, Berglund B, Johansson K, Philipsson J (2003) Genetic effects on stillbirth and calving difficulty in Swedish Holsteins at first and second calving. J Dairy Sci 86: 2228-2235.
17. Tyczka J (1998) Characteristics and evaluation of some factors influencing the course of calving in Red-and-White cows. Zesz Nauk AR Wroc 350: 173-197 (in Polish).
18. Zaborski D, Grzesiak W, Szatkowska I, Dybus A, Muszynska M, Jedrzejczak M (2009) Factors affecting dystocia in cattle. Reprod Domest Anim 44: 540-551.
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