The current experiment was performed to examine the acute and cumulative effects of chronic manual teat stimulation on the tonic pattern of luteinizing hormone (LH) secretion in beef cows. Additionally, we characterized the plasma profile of prolactin and cortisol release to evaluate whether changes in the concentrations of these hormones occurred in response to teat stimulation and whether suc...

The prevention of bovine mastitis is the most important component of a mastitis control program, and both preand postmilking teat antisepses are the most effective procedures for preventing new intramammary infections (IMI) in dairy cows. These procedures involve dipping teats of dairy cows before and after milking with an appropriate germicidal preparation to reduce teat skin colonization and ...

Abstract This study aimed to verify the relationship between parameters of physicochemical composition, microbiological quality, and volume milk delivered a dairy in northern region Rio Grande do Sul, Brazil, at four different times 2020. For this purpose, volume, protein, fat, lactose, total solids, somatic cell count (SCC), standard plate (SPC) were evaluated. The data collected January, Apri...

Different levels of claw vacuum during machine milking may influence milking performance and teat condition. The claw vacuum acts on the teat and is responsible for removal and transport of milk but is also causing potential effects on the teat tissue. In the absence of milk flow, the claw vacuum is similar as the system vacuum. During milk flow, the claw vacuum drops to lower levels depending ...

In the dairy industry world wide, several hundred types of liners are used to milk dairy cows. The enormous amount of liner types with different characteristics in size, form, consistency and other design and manufacturing characteristics indicate that no ‘best’ liner has been identified in the last 60 or so years since machine milking has become the common method for milk harvesting. Mechanica...

In this study 8 genes of growth factors and their receptors were investigated that are known to play a significant role in signaling pathways involved in the ontogenetic, but also tumorigenic, development of breast and mammary glands. Differential expression of fibroblast growth factor receptor 2 (FGFR2), GH receptor (GHR), hepatocyte growth factor (HGF), hepatocyte growth factor receptor (HGFR...

Received: Revised: Accepted: Online available: September 02, 2015 October 14, 2015 October 25, 2015 January 13, 2016 The purpose of the present study was to describe the normal ultrasonographic characteristics of the udder and teats in lactating Jennies. Seven lactating Baladi Egyptian Jennies were examined ultrasonographically using 6-8 MHz linear probe. Sagittal and transverse scans of the ud...

This study determined association of some morphometric characteristics of udder with mastitis in dairy cattle. For this purpose; 100 animals each negative and positive for mastitis by California Mastitis Test and bacteriology, were selected from amongst those brought for slaughter at Faisalabad abattoir. Morphometric observations on udder were recorded pre-slaughter; whereas, samples from mamma...

On most dairy farms teat dips are applied to the teats of cows either before or after milking in order to prevent pathogens from gaining access to the mammary gland via the teat canal. In the present experiments, a natural teat dip was developed using a fermentate containing the live bacterium Lactococcus lactis DPC 3251. This bacterium produces lacticin 3147, a two-component lantibiotic which ...