Clinical mastitis in Macedonian dairy herds

Trajcev, M.; Nakov, Dimitar; Hristov, S.; Andonov, Sreten; Joksimovic-Todorovic, Mirjana

doi:10.2298/avb1301063t

Cited by 5 publications

(11 citation statements)

References 23 publications

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“…This is the case not only in bovine, but also in other domestic animal species [80]. Therefore, any disturbances in milk quality of dams [81,82] may affect the survival of young animals.…”

Section: Igf Systemmentioning

confidence: 99%

Endocrine And Metabolic Adaptations Of Calves To Extra-Uterine Life

Kirovski

2015

Acta Veterinaria

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The transition from intra-to extra-uterine life is one of the greatest physiological challenges that occur in the life of animals. Immediately after birth, newborn calves have to adapt to new environmental and feeding conditions. Namely, at birth a break of the thermal balance occurs, since calves abruptly pass from a 38.8°C temperature in utero to an environmental temperature that is generally lower than 20°C. Additionally, at birth, the energy intake shifts from a continuous parenteral supply of nutrients (mainly glucose) to discontinuous colostrum and milk intake with lactose and fat as the main energy sources. Therefore, the most important issues related to metabolic changes during the transition from intra-to extra-uterine life are related to maintaining the homoeothermic conditions and control of energy metabolism. Those metabolic adaptations are under control of the endocrine system that is relatively mature at birth, but still requires morphological and functional changes after birth. Key hormones whose concentrations are signifi cantly changed around birth and are involved in an adequate adaptation of calves to extra-uterine life are those related to stress at birth (cortisol and cathecholamines), glucoregulatory processes (insulin and glucagon), thermogenesis (thyroid hormones) and growth (IGF axis).

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“…This is the case not only in bovine, but also in other domestic animal species [80]. Therefore, any disturbances in milk quality of dams [81,82] may affect the survival of young animals.…”

Section: Igf Systemmentioning

confidence: 99%

Endocrine And Metabolic Adaptations Of Calves To Extra-Uterine Life

Kirovski

2015

Acta Veterinaria

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“…These economic losses are caused by reduced milk yield, discarded milk, replacement cost, extra labor, costs of treatment, veterinary care and culling [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Investigation On The Etiology Of Subclinical Mastitis In Jersey And Hybrid Jersey Dairy Cows

et al. 2015

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The aim of this study was to investigate the etiology of subclinical mastitis (SCM) in dairy Jersey cows with the use of bacteriological and molecular identifi cation methods. In the study 121 Jersey and 78 hybrid Jersey cows with SCM were observed in the Samsun district of Turkey. A total of 411 California mastitis test (CMT) positive milk samples from these animals were examined bacteriologically. The prevalence of subclinical mastitis was 54.75% and 67.2% in Jerseys and hybrids, respectively. On bacteriological examination, a total of 92 strains were isolated from 411 milk samples. The most prevalent bacteria were Staphylococcus spp. (69.56%). Among them 24 isolates were Staphylococcus aureus (26.08%) the other isolates were Streptococcus dysgalactiae (23.91%), Enterococcus spp. (3.26%) and Streptococcus agalactiae (3.26%). All strains were identifi ed with bacteriological culture methods, as well as by Polymerase Chain Reaction (PCR). Gram-negative bacteria were not isolated. In conclusion, the etiology of SCM in full blood and hybrid Jersey dairy cows in Samsun and the prevalence of bacteria were determined. The relatively high prevalence of SCM indicates the potential need for the consideration of some factors contributing to the formation of mastitis (e.g. management) as well as bacterial agents. The present study and further studies may be useful to develop mastitis vaccines by means of providing true vaccine strain sources.

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“…The yearly incidence of CM in the EU countries was reported from 21% to 50% (12,13). In North Macedonia, the latest report declares 34% CM-positive cases, but the findings must be regarded with reserve since it was conducted on 3 farms (10). However, these data illustrate the CM incidence in large-scale dairy cattle farms dispersed in larger geographical area.…”

Section: Introductionmentioning

confidence: 84%

“…The highly variable reports on the CM incidence are due to different methods for identifying and categorizing mastitis cases and due to the various levels on which the studies were conducted (e.g., geographical area, number of dairy farms, time interval of sampling, etc.) (10,11). The yearly incidence of CM in the EU countries was reported from 21% to 50% (12,13).…”

Section: Introductionmentioning

confidence: 99%

Clinical Mastits Incidence In Small-Scale Dairy Cow Farms

Janevsкi

Nikolovski

Cvetkovikj

et al. 2023

Macedonian Veterinary Review

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The incidence of clinical mastitis (CM) in small and large-scale dairy cow farms can be highly variable and can be affected by age, parity, post-calving status, and atmospheric conditions. The current study aimed to assess the CM-incidence and its association with the post-calving days, number of lactations, season, and number of affected udder quarters in dairy cows in small-scale dairy farms. The study was conducted within one calendar year in 177 small-scale farms with 864 dairy cows. Clinically confirmed CM cows (n=72) were sampled from each udder quarter and processed for bacteriology examination. The CM-positive samples were grouped according to the season (spring, summer, autumn, and winter), the number of days after calving (<90, 90-180, and >180), the number of lactations (1-st, 2-5-th, and >6-th), and the number of affected udder quarters (one, two, three, and four). The CM-positive samples (n=72, 8.3%) were confirmed on bacteriology examination in significantly lower count (n=56, 6.5%). The 2-5-th lactations cows (n=35, 68.6%) were significantly more compared to the first lactation (n=6, 11.8%), and >6-th lactation cows (n=10, 19.6%). CM cows with infection of one udder quarter (n=40, 78.4%) were significantly more than the cows with two (n=6, 11.8%), and four infected quarters (n=5, 9.8%). The CM-incidence in small-scale dairy cow farms in North Macedonia was 8.3% and 6.5% by clinical and bacteriology examination, respectively. The highest CM susceptibility was observed in the cows between the second and fifth lactations. One udder quarter was most frequently affected in CM-positive cases.

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Clinical mastitis in Macedonian dairy herds

Cited by 5 publications

References 23 publications

Endocrine And Metabolic Adaptations Of Calves To Extra-Uterine Life

Endocrine And Metabolic Adaptations Of Calves To Extra-Uterine Life

Investigation On The Etiology Of Subclinical Mastitis In Jersey And Hybrid Jersey Dairy Cows

Clinical Mastits Incidence In Small-Scale Dairy Cow Farms

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