Present Situation of Calving Problems in the EEC: Incidence of Calving Difficulties and Early Calf Mortality in Beef Herds

Estimation of Repeatability of Calving Ease in Canadian Holsteins

“…:'"~.r"'~-~ ~ ~ C~--;-f"" !! ;:"~;-~'~T""-~~,{~t--..-::--;" :;-., (Menissier and Foulley, 1979). (1976c1 andMenissier andFoulley4 (1979) reported that variation -in sizf:' of t.h"~ lY']v1c-(1j'1':lIlrlP' of dams can explain' arùund 10 percent of the Vtt r i é1 t l.rm j fi the frequency ot cpiving diffieulties (r = -0 2 to.r = -0.4) .…”

An Epidemiological Study of Calf Health and Performance in Norwegian Dairy Herds

“…Less information is available on mortality of liveborn calves. Factors affecting stillbirth rates have been extensively reviewed by among others Philipsson (1976); Smidt & Huth (1979) and Mknissier & Foulley (1979), and will not be further dealt with here. In a summary, the most important factors are breed, sire, sex, number of calves at birth (singletonshwins), birth weight and parturition number.…”

Variance component estimation and sire evaluation for calving ease and livability in Angus cattle

“…The relationship between birth weight and dystocia was found to be nonlinear (Philipsson, 1976b;Burfening et al, 1978a;Menissier and Foulley, 1979), the frequency of dystocia rises sharply when birth weight exceeds a threshold value, though deviation from linearity may sometimes be small in heifers (Hotter et al, 1978;Short et al, 1979).…”

“…are breed and parity of the dam (Menissier and Foulley, 1979). The position of the threshold will also depend on the definition of dystocia, as the frequency of more serious problems (e.g., the Caesarians) starts to rise at higher birth weights than that of less severe cases (Burfening et al, 1978b;Meijering, 1984).…”

“…The position of the threshold will also depend on the definition of dystocia, as the frequency of more serious problems (e.g., the Caesarians) starts to rise at higher birth weights than that of less severe cases (Burfening et al, 1978b;Meijering, 1984). Menissier and Foulley (1979) Philipsson, 1976a;Price and Wiltbank, 1978), is held responsible for up to 20 percent of the dystocia cases, and is more frequent in older cows than in heifers. However, sire effects on frequency of malposition of the calf or on calving problems due to malpositions, were found to be essentially zero (Meijering, 1984).…”