Subclinical mastitis in dairy cows in major milk-producing areas of Sri Lanka: Prevalence, associated risk factors, and effects on reproduction

Subclinical mastitis is associated with certain risk factors such as age, lactation stage, milk production and parity. A cross sectional study including 135 cross bred Holstein Friesian dairy cows was undertaken from June 2017 to January 2019 in surrounding villages of district Ganderbal in order to identify major risk factors. The overall prevalence of SCM was 81.48%. The highest prevalence of subclinical mastitis associated with various risk factors was 48.1% (early lactation), 44.54% (5-7 years), 49.09% (>10 litres per day) and 30.90% (3rd parity) respectively. In intensive system of rearing, prevalence was 66.36% whereas in extensive 33.63% was found. In present study, single quarter was affected in 61.81% of SCM infections. In milking method, knuckling and stripping showed more incidence of SCM. In present study, moderate form of mastitis was more predominant (40.9%).

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Dairy cattle lameness prevalence, causes and risk factors in selected farms of southern Ethiopia

Ethiopian Veterinary Journal ◽

10.4314/evj.v25i2.3 ◽

2021 ◽

Vol 25 (2) ◽

pp. 27-42

Author(s):

Desie Sheferaw ◽

Rahmeto Abebe ◽

Bekele Megersa ◽

Kebede Amenu ◽

Fufa Abunna ◽

...

Keyword(s):

Risk Factors ◽

Early Detection ◽

Dairy Cows ◽

Cross Sectional Study ◽

Southern Ethiopia ◽

Sectional Study ◽

Cross Sectional ◽

Essential Components ◽

Associated Risk Factors ◽

Causes And Risk Factors

A cross-sectional study was conducted from October 2018 to December 2019 to estimate the prevalence of lameness in dairy cows, to assess the causes and associated risk factors in southern Ethiopia. A total of 2009 dairy cows were visually and clinically examined, and the overall prevalence of lameness was found to be 14. 1% (95% CI=12.7-15.7). The prevalence of lameness was significantly (P< 0.05) higher in Arsi Negelle, Yirgalem, and Wolaita Sodo than in Wondo Genet and Hawassa. The prevalence of lameness was also associated with the stages of pregnancy and parity (P < 0.05). Generally, the prevalence of lameness in dairy cows was increasing with the increase in parity and stage of pregnancy. The main abnormalities observed in this study were hooves overgrowth (6%), lesions between hooves (4%), lesions on legs (2.2%), trauma (0.6%), arthritis (0.5%), and a sole ulcer (0.3%). Most of these abnormalities were mainly due to faulty management. Hence, based on this finding it is recommended that hoof management and trimming are very essential components of lameness control. Furthermore, early detection and treatment of lame cows; training of the owners on hoof management; and improvement of the housing are helpful to keep lameness at a lower level.

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Prevalence of Subclinical Mastitis and Associated Risk Factors at Cow Level in Dairy Farms in Jhenaidah, Bangladesh

Advances in Animal and Veterinary Sciences ◽

10.17582/journal.aavs/2020/8.s2.112.121 ◽

2020 ◽

Vol 8 (s2) ◽

Author(s):

Md. Abu Sayeed ◽

Md. Ashikur Rahman ◽

Md Saiful Bari ◽

Ariful Islam ◽

Md. Mizanur Rahman ◽

...

Keyword(s):

Risk Factors ◽

Dairy Farms ◽

Subclinical Mastitis ◽

Associated Risk Factors

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Seroprevalence and risk factors associated with Neospora caninum in crossbred dairy cows in Uberlândia

Semina Ciências Agrárias ◽

10.5433/1679-0359.2018v39n4p1585 ◽

2018 ◽

Vol 39 (4) ◽

pp. 1585 ◽

Cited By ~ 1

Author(s):

Nayara Resende Nasciutti ◽

Patrícia Magalhães de Oliveira ◽

Vinícius De Morais Barbosa ◽

Selwyn Arlington Headley ◽

Felipe Gonçalves Garcia ◽

...

Keyword(s):

Risk Factors ◽

Dairy Cows ◽

Neospora Caninum ◽

Reproductive Disorders ◽

Blood Samples ◽

Factors Associated ◽

History Of ◽

Antibody Titers ◽

Associated Risk Factors ◽

The City

Neospora caninum causes reproductive disorders in dairy cattle such as repeat breeding, abortion, and anestrus, which are risk factors associated with the seroprevalence of N. caninum in Brazil and worldwide. This study aimed to verify the risk factors related to the seroprevalence of Neospora caninum in crossbred dairy cows in the city of Uberlândia, Minas Gerais. During, January to July 2013, 740 blood samples were collected from 57 herds with a history of reproductive disorders and determinations of antibody titers against N. caninum were obtained by ELISA assay. The seroprevalence of N. caninum was 18.4% (136/740). Risk factors for N. caninum were cows greater than 2 years of age (P = 0.034), mechanical milking (P = 0.012), and frequent purchase of animals (P = 0.004), in addition to individual history of abortion (P = 0.007) and repeat breeding (P = 0.030). The highest probability of occurrence of associated risk factors was associated with individual history of abortion and repeated breeding and the frequent purchase of animals, with odds of 12.8, 5.9, and 3.8 times, respectively. In conclusion, the risk factors associated with N. caninum: members of the female sex and cows with more than 2 years-of-age, mechanical milking, and the frequent purchase of animals, in addition to individual history of abortion and repeated breeding.

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