This study demonstrated that the bovine viral diarrhea virus (BVDV; types 1 and 2) fractions of a multivalent vaccine protected pregnant heifers and their fetuses at 149 to 217 days of gestation against exposure to calves persistently infected with BVDV type 2a. Eighty percent (eight of 10) of the control heifers were viremic at least 1 day following challenge, whereas all (20 of 20) BVDV-vacci...

Fecal samples were collected from diarrheic camel-calves owned by nomadic pastoralists in the Butana Region. They were examined for 5 types of bacteria reported to cause the diarrhea. Sixty nine E. coli (66%), 14 Salmonella spp. (13%) and 11 Clostridium perfringens (10%) isolates were obtained from the samples. However, neither Campylobacter spp. nor Yersinia enterocolitiaca were isolated. The ...

Twenty-four pregnant cows were vaccinated intramuscularly with K99 extract from enterotoxigenic Escherichia coli and inactivated rotavirus as follows: six cows were injected with 2 ml of oil-adjuvanted vaccine; six cows were injected with 0.5 ml of oil-adjuvanted vaccine; six cows were injected with 4 ml of aluminum hydroxide-adjuvanted vaccine twice with a four-week interval; and six cows were...

This study aimed to evaluate the effects of Enterococcus faecium 669 supplementation on performance, health, parasitological, microbiological, and hematological responses pre-weaning dairy calves. Forty-two newborn Holstein female calves [initial body weight (BW) 44 ± 4.5 kg] were used in present study. At birth, ranked by initial BW assigned 1 2 treatment groups: 1) whole milk (CON; n = 21) 2)...

Neonatal diarrhea is the main cause of morbidity and mortality in calves, Rotavirus viral etiology. vaccines are one important methods for control neonates’ calves. In current study, Deoxyribonucleic acid (DNA) sequencing phylogenetic analysis Bovine Group a (BRVA) were performed our study. 1 Calf guard® vaccine genotype (G6P1) 5 different field genotypes (2 G6P5, G10P5, G10P? G10P11) subjected...

Abstract Two experiments (EXP1 and EXP2) evaluated the effects of NutraGen (NG) on calf health following exposure to bovine viral diarrhea virus (BVDV) d -3 Mannheimia haemolytica (Mh) infection 0. For each EXP, steers (BW = 251 ± 38.2 kg) were randomly allocated 1 3 treatments (TRT). Treatments included a placebo (CON; EXP1 n 5; EXP2 5), fed from -18 followed by NG 28 (CHLG; 6), (PREC; 6; 5). ...