The aim of the present study was to investigate the relation between different indices of milk yield andbody condition score (BCS) with the commencement of the luteal activity (C-LA) during the postpartumperiod in high producing dairy cows. Seventy-one multiparous healthy (free of detectable reproductivedisorders) Holstein dairy cows (mean peak milk yield = 56.7 ± 7.4 kg) were used in the prese...

The dairy farming systems of Western Europe are based on a simple feeding system composed of grazed and preserved grass, maize silage and concentrates in variable proportions. There is, nevertheless, a great diversity of feeding strategies between dairy farms. Over 5 years, we studied the direct and delayed effects of four feeding strategies on the lactation and reproduction performances of Hol...

With the aim to review the nutrition of ruminants, this paper studies and reviews the types of nutrition method for dairy cows by the case study of dairy cow. This research is applied based on the objective, has the library type in terms of data collection, and is among the survey research based on the research methodology. The method of library documental studies was used in order to collect d...

The objective of the present study was to compare the efficacy of conventional and extendedintramammary (IMM) therapy of persistent subclinical mastitis in lactating dairy cattle using nafcillinpenicillin-dihydrostreptomycin combination (NPD). Sixty-five dairy cows with 126 infected quarters were enrolled in the study. Infected cows were allocated randomly to 1 of 3 different treatment regimens...

Increased cost of common feedstuffs and increased availability of coproducts from plant-based biofuel manufacturing has enhanced interest in the use of these coproducts in rations for dairy cattle (Donkin and Doane, 2007). Glycerol (commonly marketed as crude glycerine with a glycerol content of approximately 80%) is a coproduct produced during biodiesel production from soybean oil and is becom...

It is currently legal within the EU for dairy farmers to use antibiotics routinely for purely preventative purposes. The most common reason for antibiotic use in dairy farming is to control mastitis (inflammation of the mammary gland and udder tissue, usually due to bacterial infection). This often involves “blanket” use of antibiotics across all cows to prevent the occurrence of mastitis durin...

As our understanding of the biology underlying specifics of protein nutrition for dairy cows has increased and systems utilized to formulate diets for dairy cows have become more sophisticated, more attention has been directed toward formulating diets on an amino acid basis. This makes sense because the tissues of the cow actually require amino acids for protein synthesis, rather than protein p...

Results from the USDA:APHIS:VS National Animal Health Monitoring System (NAHMS) Dairy 2002 survey reported that approximately 5% of dairy cows die, on-farm, across the country each year. This is a very high death rate compared with that of beef cows or feedlot animals, where annual death rates were estimated at 1 to1.5%. In the NAHMS survey unknown reasons accounted for the largest percentage (...

A randomized clinical trial including 1109 cows from 12 Australian dairy herds was used to evaluate the effects of monensin on the health (n = > 686 cows), production (n = 915 cows), and reproduction (n = > 908 cows) of dairy cows. Cows were allocated to a treatment group receiving a slow-release intraruminal bolus containing 32 g of sodium monensin that was administered 40 d before and 50 d fo...

The objective of this study was to determine associations between body weight (BW) and body condition score (BCS) variables indicating a more severe negative energy balance in early lactation and events of somatic cell counts (SCC) >250,000 cells/mL and SCC >400,000 cells/mL in dairy cows. We studied lactations from 634 primiparous and 1,086 multiparous Israeli Holstein dairy cows originating f...