Fertility, production and culling following cesarean section in dairy cattle

Barkema, Herman W.; Schukken, Y.H.; Guard, C.L.; Brand, A.; Weyden, G. C. van der

doi:10.1016/0093-691x(92)90022-j

Cited by 32 publications

(16 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A number of studies on the effect of the course of calving on productivity and survival of dairy animals have established a negative impact of dystocia. Caesarean sections (CSs) were either not included in these studies or studied independently (Thompson et al., 1983; Djemali et al., 1987; Cattell and Dobson, 1990; Oltenacu et al., 1990; Barkema et al., 1992; Rougoor et al., 1994; Dematawewa and Berger, 1997; Tenhagen et al., 1999; Gschwind et al., 2003). Most studies on CS were on cows that were sent to a clinic for surgery (Barkema et al., 1992; Rougoor et al., 1994; Gschwind et al., 2003).…”

Section: Introductionmentioning

confidence: 99%

Effect of Various Degrees of Dystocia in Dairy Cattle on Calf Viability, Milk Production, Fertility and Culling

Tenhagen

Helmbold

Heuwieser

2007

Journal of Veterinary Medicine Series A

View full text Add to dashboard Cite

The objective of this study was to analyse the effect of dystocia on calf viability, milk production, fertility and culling under field (farm) conditions in a retrospective case-control study. A total of 253 calvings that were attended by a veterinarian were classified into three categories: mild dystocia (MD), severe dystocia (SD) and caesarean section (CS). For every case of dystocia, a control was chosen from the same farm and matched for calving month, breed and parity. Cases and controls were compared concerning calf viability, milk production, fertility and culling. The proportion of stillbirths was significantly higher in cows with dystocia compared with their controls. However, the difference was lower in CS cows than in the other two groups. MD had no significant effects on milk production, fertility and culling. There were no obvious effects of SD on monthly test day milk production, while CS cows produced significantly less milk than their controls. Compared with controls, less SD (50.0% versus 61.6%) and CS cows (48.6% versus 70.3%) conceived until 200 days in milk and more CS cows (31.1% versus 16.2%) were culled in the same time interval. These data demonstrate the scope of economic and animal welfare opportunities associated with the reduction of dystocia by management and breeding.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Various Degrees of Dystocia in Dairy Cattle on Calf Viability, Milk Production, Fertility and Culling

Tenhagen

Helmbold

Heuwieser

2007

Journal of Veterinary Medicine Series A

View full text Add to dashboard Cite

show abstract

“…In regards of the known detrimental effects of some disorders on reproduction and milk yield [21,22,28,29], two interrelated questions arise: (1) how to control properly for possible confounders when assessing the 'true' effect of health disorders on culling; (2) what is the relative impact of some health disorders as either predisposing risk factors (that is, which could not induce culling per se, but having a so-called indirect effect) or determining factor for culling (that is, having a so-called current lactation (305 d milk yield expressed in breed class units for Martin et al [32], Dohoo and Martin [11]). It is reasonable to assume, even if it was not clearly stated in these studies, that part of the effect of health disorders is included in the estimated effect of milk yield.…”

Section: Direct and Indirect Effects Of Health Disorders On Cullingmentioning

confidence: 99%

“…A relative hazard ratio (HR) can be estimated for each covariate from the hazard function by taking the exponent of the difference between the estimates of β for the level of interest (e.g., "exposed" or "diseased") and a reference level (e.g., "not exposed" or "healthy"): [2] At each time point of LPL, the HR measures the instantaneous relative risk for a cow of being culled, for example, when exposed versus unexposed to a given health [4,5,17,24,27,34,37,[39][40][41]. However, it may be assumed that the effect of a given health disorder may differ depending on the culling reason.…”

Section: Standard Regression Techniquesmentioning

confidence: 99%

Effect of health disorders on culling in dairy cows: a review and a critical discussion

et al. 2000

View full text Add to dashboard Cite

-Risk of culling consequent to the main health disorders occurring in the current production systems is reviewed. Survival analysis including health disorders as time-dependent variables is considered to be the most appropriate method to assess their effects because they allow a better description of the exact follow-up of disease history. Farmers preferentially consider health events in the current lactation and/or those occurring in early stages of lactation for making culling decisions. The unfavourable direct effects on culling of dystocia and udder disorders (mastitis and teat injuries) are clearly demonstrated, whereas there are variations between studies on the association between metabolic and reproductive disorders and culling. These variations may be due to differences in study designs, populations involved and methods. Consequences, in terms of estimated effect of health disorders, of methodological choices (e.g. whether or not including in the models descriptors for milk yield and/or reproductive performance) are discussed. Metabolic and reproductive disorders may act indirectly through a subsequent decrease in milk yield and reproductive performance. The impact of health disorders on longevity is on average weak, compared to the impact of low milk yield potential and poor reproductive performance. Herd characteristics (availability of heifers, quota, farmer's attitude towards risk and uncertainty...) modify the risk for a cow to be culled for a given health disorder. Aims of further studies could be (1) to interpret the meaning and to analyse the reliability of culling reasons information, (2) to evaluate the relative effect on culling of health disorders and performance (milk yield and reproduction) in different parities, (3) to investigate the role of components of the herd effect on the risk of culling. dairy cow / culling / health disorders / risk factors / survival analysis Résumé -Risque de réforme associé à la survenue de troubles de santé chez la vache laitière : revue et discussion critique. La revue porte sur le risque de réforme consécutif à la survenue des principaux troubles de santé dans les systèmes de production actuels. Pour estimer ce risque, les modèles Ann. Zootech. 49 (2000) 293-311 293

show abstract

“…Milk production, fertility and placenta retention were lower in caesarean cows and culling was higher (Barkema et al, 1992a).…”

Section: Caesarean and Welfarementioning

confidence: 99%

“…Hereford heifers in confinement during parturition had more dystocia (mainly due to vulva constriction) and stillbirths compared with animals left to calve in either the paddock or a large yard (Duffy, 1981) Shorter dry periods (Barkema et al, 1992a) and good transition nutrition (Rogers et al, 1996;Studer, 1998) reduce the incidence of dystocia.…”

Section: Prevention Of Dystociamentioning

confidence: 99%

Scientific report on the effects of farming systems on dairy cow welfare and disease

2009

EFSA Journal

View full text Add to dashboard Cite

Fertility, production and culling following cesarean section in dairy cattle

Cited by 32 publications

References 4 publications

Effect of Various Degrees of Dystocia in Dairy Cattle on Calf Viability, Milk Production, Fertility and Culling

Effect of Various Degrees of Dystocia in Dairy Cattle on Calf Viability, Milk Production, Fertility and Culling

Effect of health disorders on culling in dairy cows: a review and a critical discussion

Scientific report on the effects of farming systems on dairy cow welfare and disease

Contact Info

Product

Resources

About