Performance and Iodine Metabolism of Dairy Cattle With Iodine131 Irradiation Injury

Performance in Dairy Cattle

Integration of ruminal metabolism in dairy cattle.

An important objective is to identify nutrients or dietary factors that are most critical for advancing our knowledge of, and improving our ability to predict, milk protein production. The Dairy NRC (2001) model is sensitive to prediction of microbial protein synthesis, which is among the most important component of models integrating requirement and corresponding supply of metabolizable protei...

Improving Dairy Cattle Reproductive Performance

• A calving interval of 13.5 months is an achievable goal that will produce higher daily milk yield and higher milk yield over the length of the lactation. To achieve this goal average days to first service should be <80, yearly 21-day Pregnancy Rates should average >20% and culling for reproductive failure should not exceed 10%. • Management must set standard operating procedures for all aspec...

Effect of Metabolic Stress on Ovarian Activity and Reproductive Performance of Dairy Cattle: A Review

Reproductive efficiency in dairy cattle has been decreased over the last 5 decades despite significant gains in genetic selection, improved reproductive technologies and nutritional care. In high-yielding dairy cattle, the negative energy balance (NEB) during the first week post-partum adversely affects ovarian activity, mainly follicle growth and steroidogenesis. Circulating levels of non-este...

Regulation of Amino Acid Metabolism in Dairy and Beef Cattle

Dairy cattle • In cows fed well-balanced rations, mammary uptake of amino acids is influenced more by metabolic demand than by arterial supply. • Changes in mammary blood flow accommodate changes in metabolic demand for amino acids but are unlikely to be the primary regulator of mammary uptake and utilization of amino acids or other substrates. • Capacity of Na-dependent and Na-independent syst...