Aktuelle Methoden zur Ausund Weiterbildung von Chirurgen bestehen überwiegend aus Selbststudium mit Fachzeitschriften oder zertifizierten Fortbildungsveranstaltungen. Zunehmend bereichern webbasierte Angebote die bestehenden Möglichkeiten. Diese beschränken sich derzeit meist auf digitalisierte Fachbücher und fördern weder den Austausch der Benutzer untereinander noch die Erzeugung benutzergene...

The aim of the present study was to determine the effect of the genetic group of the Holstein-Friesian (HF) and pasture-based feeding system (3 × 2 factorial arrangement) on locomotion score (six gait aspects scored from one to five), clinical lameness and hoof disorders within a seasonal calving milk production system. The three genetic groups compared had an average Economic Breeding Index (E...

The objective of this study was to identify claw lesions causing clinical lameness in lactating Holstein Frisian (HF) crossbred cows in dairy cattle. Seventy dairy farmers were interviewed at the monthly meetings of Progressive Dairy Farmers Association of Ludhiana, Punjab, India. Ten dairy farms were randomly selected as per probability proportional to size and a total of 450 lactating HF cros...

There is little empirical evidence to indicate that dairy cow live weight affects the extent of soil damage at the hoof-soil interface during grazing on poorly drained permanent grassland. In the present study the impact of Holstein-Friesian (HF) dairy cows with a mean (±standard deviation) live weight of 570 (±61) kg were compared with Jersey × Holstein-Friesian (JX) with a mean live weight of...

Unit for Human Reproduction, 1st Department of Obstetrics and Gynaecology, Aristotle University of Thessaloniki, Thessaloniki, Greece, Department of Reproductive Medicine and Gynaecology, University Medical Centre, Utrecht, Netherlands, Department of Gynecology and Obstetrics, Division of Gynaecological Endocrinology and Reproductive Medicine, University Clinic of Schleswig-Holstein, Campus Lue...

Plasma thyroxine (T4), triiodothyronine (T3) and iodide levels were measured from birth until 30 days of age in 17 Holstein x Friesian (HF), 7 Salers and 7 Charolais calves born at term. The response of plasma T4 and T3 levels to bovine thyrotropin (TSH) injection was also compared in two groups of 9 HF calves 3hrs and 21 days, respectively, after birth. In the HF calves, plasma T4 and T3 level...

Heat stress has negative effects on pregnancy rates of lactating dairy cattle. There are genetic differences in tolerance to heat stress; Bos taurus indicus (B. t. indicus) cattle and embryos are more thermotolerant than Bos taurus taurus (B. t. taurus). In the present study, the effects of sire and sire breed on conception and embryonic/fetal loss rates of lactating Holstein cows during the Br...

beta-lactoglobulin (lgb) is one of the proteins in the mammals’ milk synthesized by the epithelial cells of the mammary glands and affects the quality and coagulation of the milk. the aim of this study was to determine allele frequencies in lgb gene of native and holstein cattle in kerman province using pcr-rflp method. genetic polymorphism, for 100 dna samples in the locus was determined by di...

Background: Metabolic profiles have been used in efforts to predict pre parturient problems and fertility, to diagnose metabolic diseases, and to assess nutritional status in dairy cows. These profiles may help to confirm the diagnosis of sub clinical diseases, to be aware of possible causes of infertility in the herds, or to monitor improvement in herd animals. OBJECTIVES: This study investiga...