Milk production in the temperate climates accounts for 66% of the world milk output. In North America only about 20% of beef originates from dairy herds, while in Europe beef production is a by-product of dairying. Several studies showed small genetic correlations between milk and beef traits, thus suggesting the possibility of simultaneous selection for both .characteristics. European breeding...

YILDIZ, E. and N. TODOROV, 2014. The comparison of the main protein sources for dairy cows. A review. Bulg. J. Agric. Sci., 20: 428-446 Review of now-a-day knowledge was made for nutritive value and effect on milk yield and composition of the main protein sources – soybean meal (SBM), sunflower meal (SFM), rapeseed (canola) meal (RSM), and dried distillers grain with solubles (DDGS) – in diets ...

Agricultural energy consumption is an important economic, environmental and social issue. The French national project EDEN aims at the analysis of energies consummations for two main activities: agricultural productions and dairy activities using OLAP systems. In this paper, we focus on energetic assessment of dairy activities. We present a multidimensional model allowing for monitoring of ener...

Jacqueline S. Rowarth Waikato Management School, The University of Waikato, Private Bag 3105, Hamilton 3240 ABSTRACT: New Zealand’s history of settlement and economic development has been tied to dairy production. Over the last two decades, a tipping point of public understanding has been reached, and increasing research has been directed towards understanding the economic impact of the dairy i...

Despite substantial advances in milk production efficiency of dairy cattle over the last 50 years, rising feed costs remain a significant threat to producer profitability. There also is a greater emphasis being placed on reducing the negative impacts of dairy production on the environment; thus means to lower greenhouse gas (GHG) emissions and nutrient losses to the environment associated with ...

The recent Common Agricultural Policy (CAP) reform of the financial support mechanism for farms was introduced in 2005. According to this reform, the level of support that each farm receives is paid regardless of the current level of production. The decoupling of direct payments is expected to change production decisions, as farmers will change their mainly subsidy revenue maximization objectiv...

To maximize herd profits, dairy farmers are faced with the complex dilemma of minimizing costs that are associated with rearing heifers while ensuring or enhancing lifetime economic productivity. Decisions about heifer management interact with underlying biological aspects of growth, thereby influencing future profitability. A thorough understanding of these biological interactions is lacking. ...

The CO2 production rates from various animal species were measured as well as the ventilation rates (VR) in environmental rooms at Michigan State University over the course of 15 studies that considered dietary strategies to alter air emissions, including two dairy cow studies, four steer studies, two swine studies, one turkey study, four laying hen studies, and two broiler chicken studies. The...

facultative heterofermentative lactobacilli (fhl) are responsible for enhancing unique flavour properties in traditional dairy products such as lighvan cheese through biochemical mechanisms. in addition to saving domestic genetic resources, industrial production of semi-traditional dairy products is one of the major objectives of non starter microflora identification in indigenous dairy product...

hemorrhagic bowel syndrome is a highly fatal intestinal disease of adult dairy cattle with uncertain cause. in a dairy herd in khorasanrazavi province, northeast of iran, two cows showed depression, anorexia, decrease in milk production, ruminal hypomotility, bruxism and dehydration. at necropsy, massive hemorrhage and clot formation was observed within the jejunum and bacterial culture of the ...