Male Holstein calves (n = 120) purchased from local dairy farms were fed one of three calf milk replacers for 42 d. Experimental milk replacers were formulated to contain whey protein concentrate (WPC) as the primary protein source or WPC plus 5% spray-dried bovine plasma (SDBP) or spray-dried porcine plasma (SDPP). The SDPP was heated to remove heat-insoluble materials and provide products wit...

The ventricular septal defect is the most common congenital cardiac defects in sheep, cattle and horses. It occurs frequently as a subaortic defect. Echocardiography is a rapid and noninvasive method for evaluation of cardiac congenital disease in animals. This diagnostic technique that can provide a wealth of helpful information including the size and shape of the heart, its pumping strength a...

AIMS This study aimed at elucidating the effects of recombinant human follicle stimulating hormone (r-hFSH) on the ovarian follicular dynamics, progesterone, estradiol-17β profiles, and pregnancy of dairy cows. MATERIALS AND METHODS Three groups (G, n=5 cows) of multiparous dairy cows were used. G1 (C) control cows were given controlled internal drug release (CIDR) and prostaglandin F2α; G2 (...

Large sticky traps were evaluated for stable fly, Stomoxys calcitrans (L.), and house fly, Musca domestica L., (Diptera: Muscidae) capture under field conditions in 5 dairy calf greenhouse facilities in New York. The farm with the highest stable fly capture had the highest house fly capture, and the farm with the lowest stable fly capture had the lowest house fly capture, suggesting that fly ma...

Viruses closely related to Norwalk-like viruses (NLVs) were recently found in stored stool samples from two calves (United Kingdom and Germany) and four pigs (Japan), sparking discussions about the potential for zoonotic transmission. To investigate if NLVs are commonly present in farm animals, pooled stool samples from 100 pig farms, 48 chicken farms, 43 dairy cow herds, and 75 veal calf farms...

Clinical symptoms from the respiratory tract were observed in cattle after the introduction of pregnant heifers into the dairy herd. Sera and nasal swabs from all animals and tissue samples from two dead animals were tested for BHV1. Specific antibodies against BHV1 were found in serum samples of 24 animals. Only one sample reacted doubtfully in gB ELISA. The virus was isolated only from nasal ...

Aims The purpose of this study was to investigate the occurrence Escherichia coli O157 and O26 on Belgian dairy cattle farms, presence virulence genes in confirmed isolates association E. with calf diarrhoea. Methods Results In total, 233 recto-anal mucosal swabs (RAMS) were obtained from healthy diarrheic calves three each alternately visited consecutive times. RAMS analysed for O26, stx1, stx...

The development of a simulation model, "JohneSSim", was part of a research program aimed at designing a national Johne's disease control program for The Netherlands. Initially, the focus was mainly directed towards different compulsory "test-and-cull" strategies. However, the results from the JohneSSim model showed that eradication of Johne's disease based on such strategies would not be possib...

Breeding objectives for beef cattle in Ireland were derived and used to define selection sub-indexes. The intention of the sub-indexes was to simplify selection decisions by commercial bull and semen buyers for situations where all of the resulting progeny are slaughtered, or when some female progeny are kept as replacement breeding cows. Separate sets of economic values for calving ease and ge...

Despite increased emphasis in recent years on declining dairy cow reproductive performance, there has been very little focus on the management of the periparturient dairy heifer and cow at calving time. Perhaps as a result, US producers are now reporting increasing perinatal calf losses at calving. A critical determinant in reducing periparturient losses is good calving management. The tenets o...