Results from large multicentre epidemiological studies suggest an association between the consumption of raw milk and a reduced incidence of allergy and asthma in children. Although the underlying mechanisms for this association are yet to be confirmed, researchers have investigated whether bacteria or bacterial components that naturally occur in cow's milk are responsible for modulating the im...

This study investigated the hormonal regulation of lactate production and the lactate production/glucose utilization ratio in sheep and cow adipose tissue (AT) explants. The effects of insulin (2 mU/mL) and/or dexamethasone (DEX, 100 nM) were measured in perirenal AT of adult non-lactating non-pregnant cows (n = 5) or ewes (n = 5) given a restricted diet followed by overfeeding. The AT explants...

Plasma alpha-tocopherol (vit E) and blood selenium (Se) concentrations in February were determined in samples from 314 dairy cows in Norway, selected to provide a representative subset of the Norwegian dairy cow population. Each sample was followed by a questionnaire with information about feeding of the cow at the time of sampling. The results were correlated to herd data and to calving and he...

Forty-seven dairy herds (approximately 3,129 lactating cows) from northeast of Spain that were offering exactly the same lactating ration were surveyed to determine the effect of nondietary factors on herd performance. The survey collected information on the profile of the owners (their future intentions, the number of workers, and time devoted to the enterprise), information regarding the anim...

The objectives were to assess incidence of pregnancy losses, associate this outcome with immunization programs against reproductive diseases, and evaluate the effects of vaccination against bovine herpesvirus-1 (BoHV-1), bovine viral diarrhea virus (BVDV), and Leptospira spp., on reproductive efficiency of Brazilian cow-calf operations. In experiment 1, 7614 lactating Nelore cows from 18 ranche...

thirtyfrieswal lactating cows were screened for clinical and subclinical mastitis and subsequently classified into healthy, subclinically affected and clinically affected groups each group comprising of 10 cows. polymorphism of cow lactoferrin (ltf) gene promoter was determined by polymerase chain reaction-restriction fragment length polymorphism (pcr-rflp). the results showed that lft gene pro...

Forages comprise 35% to 70% of the dry matter (DM) in diets for lactating dairy cows. Variation in forage quality can impact DM intake, diet energy density, dietary grain and protein supplementation amounts, feed costs, lactation performance, and cow health. Forage quality is highly variable among and within forage types (NRC, 2001). Forage species, variety or hybrid, stage of maturity at harve...