Postmortem examination of a 5.5-year-old Holstein cow with history of sudden death showed a veryhuge spleen (120 × 45 × 10 cm) associated with severe haemoperitoneum. Histopathological findingsincluded extensive infiltration of medium to large sized lymphocytic and lymphoblastic cells with smallamounts of cytoplasm, round nuclei with coarsely granular chromatin in the spleen, and limited foci o...

Intramammary infections in dairy cattle are frequently caused by staphylococci, resulting in mastitis and associated economic losses. A draft genome sequence was determined for Staphylococcus equorum UMC-CNS-924, isolated from the milk of a Holstein cow, to better understand the genetic basis of its pathogenesis and adaptation to the bovine mammary gland.

The effects of inbreeding, heterosis, recombination loss, and percentage Holstein on the estimation of predicted transmitting abilities for fertility traits (calving interval, number of days from calving to first insemination, nonreturn rate, number of inseminations) and correlated traits (milk yield at test nearest d 110 and body condition score) were examined in a mixed population of Holstein...

A 4.5-year-old Holstein-Friesian cow underwent surgery because of left abomasal displacement. Intra-operative palpation of the pyloric region revealed a phytobezoar. The abomasum containing the phytobezoar was exteriorized, and an incision was made directly over the mass in the region of the greater curvature of the pyloric part of the abomasum.

Coagulase-negative staphylococci are frequently isolated from cases of subclinical bovine mastitis. Reported here is a draft genome sequence of Staphylococcus simulans UMC-CNS-990, an isolate recovered from a chronic intramammary infection of a Holstein cow. Unexpectedly, a cluster of genes encoding gas vesicle proteins was found within the 2,755-kb genome.

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 study was carried out on 120 crossbred Holstein × Shahiwal dairy cows for a period of 150 days to quantify the influence of dietary energy and protein intake on yield and composition of milk. Total 12 dairy farms having similar housing systems and holding at least 20 dairy cows in between mid to late lactation were selected for study purposes. The farms were located in the peri-urban and ur...