a 1:1 matched case-control study of calves under 1 month of age was carried out by weekly visits to 7 dairy farms in mashhad from may 2008 to october 2008. fecal samples were collected from a total of 112 calves with clinical signs of diarrhea and from 112 matched animals without clinical signs of diarrhea as assessed by a scoring system. the samples were investigated for the presence of rotavi...

As a result of the study, new knowledge was obtained for first time about effect FXI locus polymorphism on quality reproduction in dairy cattle, degree influence frequency development pathologies reproductive organs, their clinical manifestation individuals - carriers anomaly and healthy animals established. The embryonic postembryonic mortality, condition safety newborn calves comparison with ...

Here we report dairy calf management practices used by 242 smallholder family farmers in the South of Brazil. Data were collected via a semi-structured questionnaire with farmers, inspection of the production environment and an in-depth interview with a sample of 26 farmers. Herds had an average of 22.3 lactating cows and an average milk production of 12.7 L/cow/day. Calves were dehorned in 98%...

251 Colonizing microbiome influences early intestinal development in newborn dairy calves. N. Malmuthuge1,2, G. Liang1,3, and L. L. Guan*1, 1Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada, 2Vaccine and Infectious Disease OrganizationInternational Vaccine Centre, University of Saskatchewan, Saskatoon, SK, Canada, 3Department of Microbiology,...

The article analyzes the organismal status that determines adaptive potential of newborn calves to conditions technogenic anthropobiocenosis. A complex zootechnical, clinical, hematological, morphological and statistical methods research was used. Structural functional changes in fetal parts placentas cows arise as a result aggressive impact on mother's body modern ecosystem determine peculiari...

Dairy calf death rates from birth to weaning approximate 8 to 10% in the US. Stillbirths on dairies, measured as calves dead at delivery or within the first 24 to 48 hours after delivery, are less closely monitored, but are estimated between 6 and 12%. Numerous factors influence calf health and survival, but the key contributors to calf morbidity and mortality can be managed to greatly reduce t...

Probiotics are a promising alternative to improve food animal productivity and health. However, scientific evidence that specific microbes can be used to benefit animal health and performance is limited. The objective of this study was to evaluate the effects of administering a live culture of Faecalibacterium prausnitzii to newborn dairy calves on subsequent growth, health, and fecal microbiom...

The objective of this study was to assess the effects two levels soybean hulls (0 and 400.1 g/kg) whole or ground corn in diet newborn crossbred dairy male calves on intake, performance, blood indicators, feeding cost. Twenty-eight with an average weight 33.0±6.2 kg four days age were distributed into treatment groups a completely randomized design (n = 7) for 56 days. Weekly samples feed, diet...