Dr. Goudarzi

An increase in the velocity of air, at a temperature lower than the surface temperature of the animal, has the potential to increase the sensible heat loss of the animal. An augmentation in air velocity will shift the upper critical temperature upwards. An effective ventilation system to reduce heat stress should emphasize the production of high air speed as much as the commonly accepted goal of r ...

Trace elements are required for numerous metabolic functions in livestock. Optimal production and performance require adequate intake of balanced trace minerals. As trace mineral status of the animal declines from adequate to marginal, immunity and enzyme functions are compromised followed by the loss of performance and reproduction.CopperCopper deficiency is a serious problem for dairy cattle. Co ...

1 IntroductionFungi have the ability to transform organic materials into a rich and diverse set of useful products and provide distinct opportunities for tackling the urgent challenges before all humans. Fungal biotechnology can advance the transition from our petroleum-based economy into a bio-based circular economy and has the ability to sustainably produce resilient sources of food, feed, chemi ...

When talking about the negative impact of heat stress on milk production, we usually refer to the impact on milk volume (liters per cow per day or per lactation). The reality is that this is only part of the problem, which causes economic losses to farmers and dairy industry. As will be presented in this article, heat stress negatively affects milk fat and protein content and reduce milk quality, ...

BackgroundProviding adequate amounts of essential minerals is critical to maintain health and maximize productivity of dairy cows (NRC, 2001). Organic minerals can be described as nutritionally essential minerals attached to a carbon–hydrogen based molecule which acts as a ligand. Ligands that are used most frequently include amino acids, peptides and proteins. In particular, complexes where ...

Many European dairy farmers suffered a lot from the bad milk price situation in the past few years. Fortunately, prices have stabilized over the last two years and farmers look to continue to be profitable. Nonetheless, a more volatile price situation for dairy products is expected for the future. With feed costs representing the largest input in cost of production, it is of high importance to use ...

For the most part, most dairies include at least some supplemental or additive products in their feeding programs. We build diets starting with the forage base, using the best forages we can, and then add different feed and grain components to provide protein and energy. Once the main nutrients are provided, it is then common to “fill in the holes” of the nutrient profile. Next, we of ...