This experiment was conducted to evaluate and compare the effects of inorganic organic selenium sources with carriers on growth performance, starter feed intake, blood parameters, concentration glutathione peroxidase in suckling Holstein calves. To this objective, 40 calves (38.47±2.52 kg average birth weight) at 7 days age were selected randomly divided into four experimental groups (10 replic...

The present study was conducted to clarify the relationship between colostral and plasma vitamin A and b-carotene, and to evaluate the effect of vitamin status on diarrhea and anemia of 46 Holstein newborn calves at 6 days of age. Colostral b-carotene and vitamin A concentrations at parturition ranged from 17.8 to 342.9 and from 32.9 to 450.0 mg/dl, respectively. Plasma b-carotene and vitamin A...

BACKGROUND This preliminary study was aimed at evaluating the association between single nucleotide polymorphisms (SNPs) on Toll like receptor 9 (TLR9) gene and some immunological parameters in a population of Italian Holstein calves. METHODS The study was carried out in a commercial farm on 68 Holstein calves aging about 6 months. Genomic DNA was extracted from peripheral blood mononuclear c...

The objective of this study was to investigate the effects of different early weaning programs on growth performance and blood parameters of dairy calves. To meet this objective, thirty Holstein calves with initial body weight of 36 ± 5 kg were randomly assigned at birth to one of the three weaning programs. Experimental groups were: 1) starter diet and whole milk from birth to 6 weeks and wean...

this study was done for identification of bacterial agents in calf pneumonia and determination of their antimicrobial susceptibility. bronchoalveolar lavage was done on fourteen pneumonic and seven normal holstein calves between 1-3 month old. in bacteriological examination on the fluid of bronchoalveolar lavage, mycoplasma spp. were isolated from 4 (28.6%) pneumonic calves and 1 (14.3%) health...

The objective of this experiment was to evaluate the effect of dietary supplementation of glutathione (GSH) on health, solid feed consumption, nutrient intake, body weight gain (BWG), feed efficiency, blood metabolites and the occurrence of diarrhea in Holstein neonatal calves. The calves were fed plain milk as a control (CON) or milk with GSH supplementation. Sixteen calves were separated from...