The objective of this field study was to compare the udder health status as well as the clinical mastitis rate during the first 100 d of lactation in cows that received long-acting dry cow antibiotic alone (group AB) or in combination with an internal teat sealant (group AB + OS). The study was conducted during a 9-month period and included 136 Holstein cows from 12 dairy farms in Hessia, Germa...

Refining the recommended approach to mastitis control in dairy herds is a continual process. Recently developed concepts and practices are described. INTRODUCTION Even though great technological advances have been made, mastitis continues a major economic issue for dairy producers. Thus, researchers and dairy advisors continue to refine the National Mastitis Council (NMC) recommended mastitis c...

AIM The aim of the study was to assess the effect of udder morphological characteristics on milk yield in zebu cows of Cameroon. MATERIALS AND METHODS The diameter and height of the udder, length and diameter of the teat, and the milk yield were measured in 29 Djafun (Red Mbororo) and 19 Aku (White Fulani) cows in Louggueré zootechnical station in the North region of Cameroon. RESULTS Overa...

Progress in sensor technique and electronics has led to a decrease in the costs of electronic and sensor components. In modern dairy farms, having udders in good condition, a lower frequency of udder disease and an extended service life of dairy cows will help ensure competitiveness. The objective of this study was to develop a teat-end vacuum control system with individual quarter actor reacti...

Estimation of genetic variability and correlations between production traits (milk yield, fat content, protein content) selected type (angularity, fore udder height, rear front teat placement, length, depth) was done using data sets 10,860 first-calving Holstein-Friesian cows raised in the territory Republic Serbia. Genetic variance covariance were obtained Restricted Maximum Likelihood (REML) ...

Infection of the mammary gland with environmental bacterial pathogens is the most significant udder health problem facing the dairy industry in North America. Forty years ago, Neave et al. (1966) stated that the rate of new intra-mammary infection is related to the number of bacteria that the teat end is exposed to, and several studies have made associations between clean housing, clean cows an...

________________________________________________________________________________ Abstract Udder health considerably affects the economics of dairy farming. There are different reasons for poor udder health; one of them is the milking technique. In earlier studies it was shown that automatic milking systems (AMS) have advantages over conventional milking systems (CMS). Quarter individual milking...

Background: A limited number of studies in non-dairy sheep breeds have investigated the assessment udder morphology on a linear scale. The aim this study was to use scoring approach determine morphological traits Norduz ewes. Methods: Udder were measured once mid-lactation (approximately 90 days) for each ewe before milking. measurements included following traits: width, circumference, length, ...

Skin pathologies of the teat and udder are rare but a difficult to diagnose challenge for large animal practitioners. Due to their localisation, the milkability can be compromised partly or completely so that the economic value of the animals is seriously at risk. Skin pathologies of the udder can be of infectious or non-infectious nature. Most prevalent non-infectious skin lesions are primaril...

GIESECKE, W. H. & VILJOEN, M. H ., 1974. The diagnosis of subclinical mastitis in lactating cows: a comparison of cytological methods and a monovalent radial immunodiffusion test. Onderstepoort J. vet. Res., 41(2) 51 74 (1974). The diagnostic accuracy of conventional methods for the diagnosis of subclinical mastitis, such as the direct microscopic count (DMC) and electronic cell count (ECC) eit...