Dr. Moh, Aladdin Chomal

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, ...

Ruminants have a unique digestive physiology characterized by a pre-systemic fermentation and digestion of plant constituents such as cellulose by microorganisms comprising the ruminal flora. This particularity requires feeding regimes that include enough amounts of forage to maintain a functional rumen flora. Then ruminant nutrition consists to equilibrate diet with fiber, energy and protein in o ...

Approximately 40 percent of calves that require partial assistance at birth die immediately or later (those that survive are more likely to develop respiratory and digestive problems later in life). Dystocia is associated with 50% pre-weaned calf mortality, each dairy should implement a dystocia management program and use management practices that limit the occurrence and impact of dystocia.First- ...

IntroductionAntimicrobials, including antibiotics, antivirals, antifungals, and antiparasitics, are used to prevent and treat infections in humans, animals, and plants.1 Microbes can become resistant to antimicrobials as a result of ineffective or prolonged antimicrobial treatment. This resistance may be “innate” owing to the slow and long evolutionary process that microorganisms under ...

IntroductionSupplemental lipids are commonly included in diets for ruminants (Doreau and Ferlay 1994). These lipids are components of feedstuffs or through the addition of specific lipid additives (Loften et al. 2014). Most commonly, these lipid additives are used to increase the energy density of the diet (Hess et al. 2008), but can also be used to modulate the fatty acid (FA) comp ...

The first week of the life of calves, which belongs to the calving phase, is the most critical period, as 50% of the first-year mortality rate occurs during this period, where various stressors strongly influence health.Stress is a response of the animal's organism to a stimulus, and when it is associated with negative situations, reduced performance and productivity are inevitable, since animal h ...

Introduction Fertility is the result of so many factors that the definition of Fromageot (1978) is not surprising: reproduction can be considered a “luxury” function. In fact, several experiments have demonstrated how numerous and different are the causes of reduced fertility. Among them, nutrition has a relevant role (Wolter, 1973; Bertoni, 1990; Ferguson, 1991) related to the de ...