Prospective Serology and Analysis in Diagnosis of Dairy Cow Abortion

Abstract

Abstract. Leptospira pomona, hardjo, grippotyphosa, icterohemorrhagiae, canicola, szwajizak.hardjo, [8][9][10]

Actors Associated With Pregnancy Losses in Friesian Cows Raised Under Egyptian Conditions

“…The incidence of pregnancy loss in heifers inseminated at 16 to 24 months of age showed lower (10.19%) than that the older cows having more than 96 months of age (16.32 %). The results are in agreement with that reported by Thurmond et al (1990a) who reported that the abortion rate increased after cows reached 5 year of age. Heifers are generally considered to have higher pregnancy rates, and this increase seems to be associated with less embryonic mortality than in cows (Geary, 2005).…”

Serum zinc and copper concentrations in relation to spontaneous abortion in cows: implications for human fetal loss

“…In addition, periconceptional Zn deficiency has been associated with abnormalities in early embryonic growth in rats and mice (Hurley and Shrader, 1975;Peters et al, 1991) and karyotypic changes in severely Zn-deficient rats (Bell et al, 1975). Zn supplementation has been suggested to reduce pregnancy complications and improve fetal growth and pregnancy out¬ come in women (Jameson, 1976;McMichael et al, 1982; Cherry et Simmer et al, 1990) and typically managed sheep (Egan, 1972;Masters and Fels, 1980;Masters and Moir, 1983 (Hunt et al, 1984;Ghosh et al, 1985;Hunt et al, 1985;Austen et al, 1989;Mahomed et al, 1989;Apgar, 1992 (Thurmond et al, 1990b Thurmond and Picanso (1990). Period of risk for abortion was defined as gestational days (Thurmond and Picanso, 1990 (Keen and Feldman, 1987).…”

“…Endotoxin-induced inflam¬ mation has been documented to cause bovine abortion exper¬ imentally (Giri et al, 1990(Giri et al, , 1991. Increased risk of fetal loss has previously been associated with changes in antibody titres to gram-negative organisms (Leptospira) and common viral pathogens (IBRV and BVDV) in herds 1, 3 and 4 (Thurmond et al, 1990b (Kline et al, 1985). Fever was noted to precede fetal expulsion by up to 62 days, but the odds of abortion were highest for fevers that occurred during the same month as fetal loss (Kline et al, 1985 Differences in periods examined for risk of fetal loss (i.e.…”

Prevalence of Antibodies to Neospora caninum in Korean Native Beef Cattle.

“…On retrospective study of archival materials, N. caninum was identified in canine tissue dating from 1957 [9] and in bovine tissue from 1974 [6]. Exposure to N. caninum causes decrease in milk production in dairy cattle [19] and reduction in post weaning weight gain, carcass weight in beef cattle [2]. Recently, dogs have been documented as a definite host of N. caninum [16].…”