Association of milk flow curve and prevalence of mastitis pathogens in dairy cows

The objective of this work was to evaluate the association of bimodality of milk flow curves with microbiological status of mammary glands and parity of cows. We selected 167 primiparous and 148 multiparous Lithuanian Black and White dairy cows in 2nd to 4th month of lactation. The bimodality of milk flow was determined in 22.2% primiparous and in 38.6% multiparous cows (P less than 0.001). The most prevalent pathogens of mastitis were Staphylococcus aureus (15.3%), other staphylococci (22.2%) and streptococci (5.8%). Prevalence of mastitis pathogens in multiparous cows was 1.4 times and the bimodality of milk flow curves –1.7 times higher in comparison with primiparous cows (P less than 0.001). The bimodality of milk flow curve was mostly associated with the prevalence of Streptococcus agalactiae and Staphylococcus aureus (P less than 0.001). The increased frequency of mastitis pathogens (21.5%) in cows with the bimodal milk flow curves supports the negative effect of bimodality on udder health of cows (P less than 0.001).

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Milkability Evaluation of Jersey Dairy Cows by Lactocorder

Macedonian Veterinary Review ◽

10.2478/macvetrev-2019-0026 ◽

2020 ◽

Vol 43 (1) ◽

pp. 5-12 ◽

Cited By ~ 1

Author(s):

Tina Bobić ◽

Pero Mijić ◽

Vesna Gantner ◽

Gjoko Bunevski ◽

Maja Gregić

Keyword(s):

Statistical Analysis ◽

Dairy Cows ◽

Flow Curve ◽

Cattle Breed ◽

Flow Curves ◽

Daily Production ◽

Udder Health ◽

Milk Flow ◽

Jersey Cows ◽

Lower Production

AbstractSince there is not enough data about milkability of the Jersey cows, the aim of this paper is to show basic milkability traits of this cattle breed depending on the parity and milk flow curve types. Cows had average daily production (DMY) of 22.23 kg, milk yield per milking (MYM) of 9.72 kg, and average and maximum milk flow about 1.66 and 2.49 kg/min, respectively. Statistical analysis showed that DMY and MYM of the cows in 4th parity was significantly (p<0.05) higher comparing to cows in 1st and 3th parity. The duration of entirely milking is similar regarding the paritiesand only the cows in 3th and 4th differ significantly (p<0.05). Regarding the effect of milk flow curve, the significant (p<0.05) difference between unspecified and rectangular milk flow curve has been found for the average milk flow (AMF) and descending phase of the milk flow curve (TD). Cows with unspecified milk flow curve, have significantly (p<0.05) lower AMF and longer TD compared to cows with rectangular curve. Cows with bimodal milk flow curve have significantly (p<0.05) longer duration of the ascending phase compering to: unspecified, descending and rectangular. The results of this study have shown that Jersey cows have lower production and milk flow compared to other dairy cattle breeds. Nonetheless, they have uniform milkability traits, and a large representation of desirable milk flow curves which are associated with a beneficial effect on the udder health.

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Vacuum Dynamics as an Alternative Method for Detection of Bimodal Milk Ejection in Dairy Cows

Animals ◽

10.3390/ani11071860 ◽

2021 ◽

Vol 11 (7) ◽

pp. 1860

Author(s):

Matthias Wieland ◽

Christina Marie Geary ◽

Gloria Gioia ◽

Kerry Lynn Case ◽

Paolo Moroni ◽

...

Keyword(s):

Dairy Cows ◽

Predictive Value ◽

Primary Objective ◽

Cow Milk ◽

Kappa Statistics ◽

Flow Meter ◽

Flow Curves ◽

Cross Sectional ◽

Gold Standard Method ◽

Milk Flow

The primary objective of our study was to assess the ability of a vacuum recorder to detect the presence of bimodal milk flow curves in dairy cows compared with a portable milk flow meter. In a cross-sectional study, 241 individual cow milking observations were analyzed. We simultaneously collected (1) individual cow vacuum events during milking using portable vacuum recorders, and (2) individual cow milk flow curves by attaching a portable milk flow meter to the same milking unit. Presence of bimodality was assessed with the vacuum recorder visually (BIMVA) and with the gold standard method of a milk flow meter through automatic detection (BIMLA). Kappa statistics revealed moderate agreement between BIMVA and BIMLA [κ, 95% confidence intervals (95% CI) = 0.59 (0.46–0.71)]. Diagnostic test statistics for BIMVA for detection of bimodality indicated moderate performance for sensitivity [0.65 (0.52–0.76)] and positive predictive value [0.71 (0.58–0.82)] and high values for specificity [0.92 (0.87–0.95)] and negative predictive value [0.93 (0.84–0.93)]. We conclude that milking vacuum dynamics are a suitable measure to assess bimodal milk flow curves in dairy cows.

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Changes in the physicochemical properties of whey and cottage cheese produced from the milk of Ukrainian black-and-white dairy cows with different genotypes of kappa-casein during storage

Theoretical and Applied Veterinary Medicine ◽

10.32819/2021.93018 ◽

2021 ◽

Vol 9 (3) ◽

pp. 115-121

Author(s):

I. О. Polieva ◽

I. V. Korh

Keyword(s):

Physicochemical Properties ◽

Shelf Life ◽

Dairy Cows ◽

The Body ◽

Cottage Cheese ◽

State Enterprise ◽

Hydrogen Ions ◽

Black And White ◽

Duration Of Storage ◽

Negative Effect

The article presents experimental materials on the study of changes in the whey and cottage cheese physicochemical properties which are made from the milk of Ukrainian black-and-white dairy cows with different kappa-casein genotypes during storage. The experimental part of the work was carried out in the conditions of a pedigree plant for breeding Ukrainian black-and-white dairy breed of the «Profintern» unit of the State Enterprise «Gontarivka» in the Institute of Animal Science of the National Academy of Agrarian Sciences (NAAS). Based on the analysis results of the chemical composition, there were no significant differences between the groups for most indicators during storage in the period from the first to the 15th day, although in absolute values they can be placed in the following order: cottage cheese made from milk of cows with the BB genotype, AB and AA. It was found that the concentration of active acidity, similar to most quality indicators of cottage cheese, was determined at the beginning of storage by a higher value in cows with genotype BB by 0.9 and 0.5% compared to animals with genotypes AA and AB. With the extension of the shelf life, the rate of acid formation tended to decrease and on the 15-th day was 3.8–3.1%, compared the initial values. In contrast, the difference between the samples from the representatives with the BB and AA genotype in terms of the activity of hydrogen ions during this period was 1.6% and the AB genotype – 0.9%. Despite the fact that the duration of storage had a negative effect on the hydrogen ions’ concentration in cottage cheese, made from cow’s milk with different genotypes of kappa-casein, its moisture-retaining properties, on the contrary, have improved. It was found that cottage cheese and whey, regardless of the cows’ genotype at the kappa-casein locus, during storage have a relatively stable composition and meet the requirements of the current DSTU. The recommended shelf life is 15 days. The best combination of the studied parameters in the production of BB genotype cows reflects the higher course of metabolic processes in the body, which led to an improvement in its quality.

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The level of udder emptying and milk flow stability in Tsigai, Improved Valachian, and Lacaune ewes during machine milking

Czech Journal of Animal Science ◽

10.17221/5922-cjas ◽

2012 ◽

Vol 57 (No. 5) ◽

pp. 240-247 ◽

Cited By ~ 4

Author(s):

L. Mačuhová ◽

V. Tančin ◽

M. Uhrinčať ◽

J. Mačuhová

Keyword(s):

Milk Production ◽

Flow Curve ◽

Frequency Of Occurrence ◽

Flow Curves ◽

Machine Milking ◽

Milk Flow ◽

Total Milk ◽

The Stability ◽

June July ◽

Daily Milk

The objective of this investigation was to evaluate the stability of milk flow curves and the volume of residual milk in relation to milk flow curves in breeds Tsigai, Improved Valachian, and Lacaune (n = 16 heads per breed) milked twice daily. Milk flow type stability was evaluated at morning milking (stabile milkings) during three successive days in the middle of two months (June, July). After the following fourth morning milking (OT milkings) in both months, oxytocin was injected intravenously at a dose of 2 UI. Afterwards the ewes were milked again in order to remove residual milk. The milk flow curves were classified into four types: 1 peak (1P), 2 peaks (2P), plateau I (maximal milk flow over 0.4 l/min) (PLI), plateau II (maximal milk flow less than 0.4 l/min) (PLII). If all milk flow curves of one animal were of the same type within one month and within both months, respectively, the animal was characterized as the ewe with the stabile type of milk flow. Frequency of occurrence of single milk flow types (1P : 2P : PLI : PLII) during stabile milkings was 42 : 49 : 9 : 0% in June and 51 : 37.5 : 11.5 : 0% in July. 33 ewes (i.e. 69%) had the stabile type of milk flow within both months. But, more than 51% of them had 1P type of milk flow. Milk production varied according to milk flow curve during OT milkings (0.427 ± 0.015, 0.498 ± 0.024, and 0.655 ± 0.035 l for 1P, 2P, and PLI, respectively). The highest percentage of residual milk from total milk yield (RM/TMY) was observed in ewes with 1P (20.29 ± 0.85%), followed by ewes with PLI (12.31 ± 1.99%) and 2P (9.72 ± 1.36%) (P < 0.0001). Lacaune ewes had the lowest amount of residual milk (0.054 ± 0.006 l) and RM/TMY (9.86 ± 1.16%) compared to breeds Tsigai (0.088 ± 0.008 l; 16.47 ± 1.44%) and Improved Valachian (0.069 ± 0.010 l; 15.99 ± 1.78%) indicating their better udder emptying.  

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Evaluation of a Postmilking Teat Disinfectant Containing a Phenolic Combination for the Prevention of Mastitis in Lactating Dairy Cows

Journal of Food Protection ◽

10.4315/0362-028x-62.11.1354 ◽

1999 ◽

Vol 62 (11) ◽

pp. 1354-1357 ◽

Cited By ~ 6

Author(s):

S. P. OLIVER ◽

M. J. LEWIS ◽

B. E. GILLESPIE ◽

S. J. IVEY ◽

L. H. COLEMAN ◽

...

Keyword(s):

Dairy Cows ◽

Mammary Glands ◽

Clinical Mastitis ◽

Negative Control ◽

Coagulase Negative Staphylococcus ◽

Intramammary Infections ◽

Treatment Groups ◽

Streptococcus Uberis ◽

Lactating Dairy Cows ◽

Mastitis Pathogens

A trial was conducted for 12 months in a herd of 120 Holstein cows in order to determine the efficacy of a teat disinfectant, which contained a phenolic combination, for the prevention of bovine intramammary infections during lactation. Postmilking teat disinfection was compared to a negative control using a split-udder experimental design. The percentage of quarters newly infected by mastitis pathogens was 45% lower in mammary glands with teats that had been dipped in the experimental teat disinfectant after milking than it was in undipped controls. New infections caused by Streptococcus uberis, Staphylococcus aureus, coagulase-negative Staphylococcus species, and Corynebacterium bovis were significantly lower in mammary glands with teats that had been dipped in the experimental teat disinfectant than in undipped controls. No statistical differences in the incidence of clinical mastitis between treatment groups were observed. No irritation or chapping of teats dipped in the experimental teat disinfectant were observed. The results of this study suggest that the experimental teat disinfectant containing a phenolic combination is an effective postmilking teat disinfectant for use in the prevention of new intramammary infections by both contagious and environmental mastitis pathogens.

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Milking procedures, milk flow curves and somatic cell count in dairy cows

Italian Journal of Animal Science ◽

10.4081/ijas.2005.2s.215 ◽

2005 ◽

Vol 4 (sup2) ◽

pp. 215-217 ◽

Cited By ~ 4

Author(s):

A. Sandrucci ◽

L. Bava ◽

A. Tamburini ◽

L. Zanini

Keyword(s):

Dairy Cows ◽

Somatic Cell ◽

Cell Count ◽

Somatic Cell Count ◽

Flow Curves ◽

Milk Flow

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Identification and antimicrobial susceptibility of methicillin-resistant Staphylococcus aureus-associated subclinical mastitis isolated from dairy cows in Bogor, Indonesia

Veterinary World ◽

10.14202/vetworld.2021.1180-1184 ◽

2021 ◽

pp. 1180-1184

Author(s):

Evi Nur Qolbaini ◽

Miftahudin Majid Khoeri ◽

Korrie Salsabila ◽

Wisiva Tofriska Paramaiswari ◽

Wisnu Tafroji ◽

...

Keyword(s):

Staphylococcus Aureus ◽

Dairy Cows ◽

Antibiotic Susceptibility ◽

Clinical Symptoms ◽

Subclinical Mastitis ◽

Diffusion Method ◽

Disk Diffusion Method ◽

Methicillin Resistant ◽

Polymerase Chain ◽

And Staphylococcus Aureus

Background and Aim: Subclinical mastitis is an udder infection devoid of clinical symptoms, and Staphylococcus aureus is one of the bacteria causing this disease. This study aimed to identify and determine the prevalence and antibiotic susceptibility of methicillin-resistant S. aureus (MRSA)-associated subclinical mastitis isolated from dairy cows in Bogor, Indonesia. Materials and Methods: S. aureus was isolated from subclinical mastitis milk specimens. All strains were confirmed by polymerase chain reaction-based detection of staphylococcal nuc, and MRSA was confirmed by the presence of mecA. Antibiotic susceptibility was determined using the disk diffusion method. Results: From 86 milk samples, 49 isolates (57%) were confirmed as S. aureus. All S. aureus isolates were susceptible to tetracycline, gentamicin, chloramphenicol, erythromycin, and trimethoprim/sulfamethoxazole. Nine isolates were identified as MRSA (10.5%). Conclusion: In this study, we reported MRSA-associated subclinical mastitis in Bogor, Indonesia.

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STATUS MIKROBIOLOGI (Total Plate Count dan Staphylococcus aureus) SUSU SAPI PERAH DI KABUPATEN TANGGAMUS PROVINSI LAMPUNG

Jurnal Riset dan Inovasi Peternakan (Journal of Research and Innovation of Animals) ◽

10.23960/jrip.2020.4.3.197-204 ◽

2020 ◽

Vol 4 (3) ◽

pp. 197-204

Author(s):

Oktora Luhur Handika ◽

Veronica Wanniatie ◽

Purnama Edy Santosa ◽

Arif Qisthon

Keyword(s):

Staphylococcus Aureus ◽

Dairy Cows ◽

Plate Count ◽

Survey Method ◽

Milk Samples ◽

Fresh Milk ◽

Census Methods ◽

Total Plate Count ◽

And Staphylococcus Aureus ◽

Microbiological Status

This study aimed to determine the microbiological status (Total Plate Count and Staphylococcus aureus) of milk of dairy cows of people's farms. Research location was in Tanggamus Regency, Lampung Province. This research used survey method with census methods. Fresh milk samples were taken during milking in the morning, which is as much as 250 ml from all lactating cows. In addition, this study also used questionnaire to know the condition of the dairy cows. Nineteen milk samples were analyzed at the Veterinary Public Health Laboratory of Lampung Veterinary Center, Bandar Lampung. Analysis of milk microbiological status was based on Total Plate Count and Staphylococcus aureus. The results of this study indicated that 100% of milk samples had Total Plate Count and Staphylococcus aureus values ??below the maximum SNI number of 3141.1: 2011. Milk of dairy cow in Tanggamus Regency, Lampung Province is feasible and safe for consumption. Keywords: Dairy cows, Microbiological status, Milk.

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Cranial superficial epigastric vein phlebitis and septicemia in dairy cows in Brazil

Journal of Veterinary Diagnostic Investigation ◽

10.1177/1040638719847520 ◽

2019 ◽

Vol 31 (4) ◽

pp. 554-556 ◽

Cited By ~ 1

Author(s):

Douglas R. N. Gonzaga ◽

Daniel R. Rissi ◽

Dayse H. Lages ◽

Antonio U. Carvalho ◽

Elias F. Filho ◽

...

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Dairy Cows ◽

Microscopic Examination ◽

Rare Condition ◽

Dairy Farms ◽

Minas Gerais ◽

Southeastern Brazil ◽

Fibrin Deposition ◽

And Staphylococcus Aureus

Cases of cranial superficial epigastric vein (CSEV) phlebitis with subsequent septicemia were observed in dairy farms in Minas Gerais, Brazil. Autopsy on 4 affected cows, from 2 farms, revealed CSEV thrombophlebitis with perivascular abscesses, pulmonary abscesses, valvular endocarditis, arthritis, thromboembolic nephritis, and renal infarcts. Microscopic examination revealed fibrosing and lymphoplasmacytic phlebitis with occasional endothelial loss, subendothelial areas of necrosis, and abundant fibrin deposition. Trueperella pyogenes, Escherichia coli, and Staphylococcus aureus were isolated from lesions of 3 different cows. Thrombophlebitis of the CSEV is a rare condition in dairy cows; however, it has become more frequent in dairy farms in southeastern Brazil after repeated venipuncture of this vein, likely with contaminated needles used for administration of oxytocin.

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