The objective of this study was to benchmark the herd-level housing and management strategies automated milking system (AMS) farms across Canada assess associations these factors practices with milk production quality. Canadian AMS (n = 197; Western Canada: n 50, Ontario: 77, Quebec: 59, Atlantic 11) were each visited once from April September 2019, details collected related barn design herd pr...

BACKGROUND Peripheral nerve sheath tumors (PNSTs) are frequently found in Danish cattle at slaughter. Bovine PNSTs share several gross and histopathological characteristics with the PNSTs in humans with heritable neurofibromatosis syndromes. The aim of the present study was to investigate a possible hereditary disposition to PNSTs in dairy cattle by statistical analysis performed on data from 5...

CXC chemokine receptors 1 (CXCR1) play a key role in inflammatory response and eventual activation of the innate immunity. Mastitis is a big problem in dairy industry. In the presented study the bovine CXCR1 gene was considered a candidate gene of anti-mastitis defense in Chinese Holsteins. Polymorphism of bovine CXCR1 was investigated and its associations with Somatic Cell Scores (SCS) and mil...

BACKGROUND Schistosoma reflexum (SR) is congenital syndrome briefly characterized by visceral eventration, severe dorsoflexion and ankylosis of the spine and arthrogryposis. A genetic etiology has been proposed, but conclusive evidence has not yet been provided. METHODS Pedigree analysis was carried out in 29 cases of SR in Czech Holsteins and Holstein crosses. Genetic relationship was evalua...

the main objective of this study was to estimate the genetic parameters for multi-trait evaluation of birth weight (bw), gestation length (gl) and calving difficulty (cd) in first-parity iranian holstein dairy cattle. the data included 29,950 calving records collected during 1995 to 2014 by the animal breeding and improvement center of iran. a threshold-linear sire-maternal grandsire model was ...

The paper presents the results of study into composition and properties milk in black and- white dairy cows improved using black-and-white Holsteins different lines. It has been found that Vis Ideal line produce with a high casein phosphorus content, Poseidon give content whey proteins, Annas Adema lactose calcium content. Milk from is most suitable for production high-quality products such as ...