In pasture-based seasonal calving systems, failure to become pregnant during the breeding season results in important economic losses as maximum profit is attained by minimising costs and increasing the proportion of grass in the diet of the lactating dairy cow. In the United States, dairy producers primarily strive to maximise production potential but are becoming increasingly aware of the eco...

Four months back calved crossbred dairy cow had history of coffee coloured urine. Blood smear and Blood samples of this cow were collected on the day of acute stage of infection and then 15th day of post treatment for haematological parameters. Based on the clinical pathonomonic symptom (coffee coloured urine) and blood smear examination presence of Babesia bigemina organisms the disease was di...

The objective of this trial was to measure performance of paired pens of lactating Jersey and Jersey-Holstein crossbred (JX) vs. Holstein (H) cows over a year in a Wisconsin confinement dairy herd. Average daily milk yield of JX was 5.5 kg/ cow less than H, whereas average milk fat and true protein percentages were 0.61 (4.26 vs. 3.65%) and 0.19 (3.05 vs. 2.86%) percentage units, respectively, ...

The objective of this study was to evaluate effects dietary supplementation a seaweed-originated product (SOP) on milk productivity, quality and health milking cows under Vietnam weather conditions at the dairy farm One Member Dairy Beef Joint Stock Company HCMC, from October 2019 February 2020. A total 40 Holstein Friesian crossbred were randomly allotted into 2 treatments in randomized comple...

To implement precision feeding for dairy cow, an intelligent multiconcentrates feeding system was developed. The system consists of two parts, one is precision ingredients control subsystem, the other is multi-concentrates discharge subsystem. The former controls the latter with 4 stepper motors. The precision ingredients control subsystem was designed based on Samsung S3C2440 ARM9 microprocess...

Johne's disease ('paratuberculosis') is a chronic, infectious, wasting disease that affects dairy cattle. Estimation of its impact on herd productivity and corresponding economic loss on US dairy operations was part of the USDA National Animal Health Monitoring System's (NAHMS) 1996 national dairy study. Johne's-positive herds experience an economic loss of almost US$ 100 per cow when compared ...

The modern dairy cow has been selected over generations for high milk production, with many successful dairy operations averaging over 13,500 kg of milk per lactation cycle per cow. This amount of nutrient output in the form of milk components puts a tremendous amount of pressure on the metabolism of the dairy cow, especially during early lactation. In fact, it is common to all mammals, includi...

The number of dairy cows in Idaho has increased by approximately 80% in the last decade with concentrated dairy production facilities being the norm. The majority of these production facilities are located in southern Idaho, which has generated regional air quality concerns. To determine the potential air quality impacts of these facilities, we determined emissions of ammonia (NH3) and methane ...

The use of additives in ruminant diets has occurred more intensely recent years to increase animalperformance, through changes the ruminal microbiota. Thus, this study aimed evaluate: 1) Isomix (Iso)and virginiamycin (Vir) concentrate, a 2x2 factorial (without and with 30 g Isomix/cow/day; without 210mg virginiamycin/cow/day), on productive performance mixed cows pasture; 2) multiplesupplement ...