Risk factors associated with on-farm mortality in Swedish dairy cows

Lamb mortality is a key factor influencing ewe productivity and profitability. The current study investigated risk factors associated with and management practices implemented on sheep farms to reduce lamb mortality. A survey consisting of 13 multiple-part questions (57 separate questions) was administered to all sheep farmers participating in the Teagasc National Farm Survey, representative of the Irish national population of sheep farms. A total of 60% of respondents identify mating or lambing date, and this practice tended to be associated with reduced lamb mortality (1.2%, p = 0.08). Individual lambing pens were used by 88% of farmers, but 26% did not clean or disinfect them. A total of 79% and 9.5% of farmers applied iodine to all lambs’ navels and administered antibiotics to all lambs to treat and/or prevent diseases, respectively. Most farmers vaccinated their ewes (86%) and lambs (79%) against clostridial diseases and/or pasteurellosis; 13% vaccinated against abortion agents. Lamb mortality tended to be lower (Kruskal–Wallis (KW) = 2.749; p = 0.09) on farms that used stomach tubing, heat box, iodine, hospital, and individual pens compared with farms that do not implement all those practices. Predators, lamb birth weight, and diseases were perceived by respondents to be the three main causes of live-born lamb mortality. The gross margin is significantly higher on lowland farms by €37 per ewe compared with hill farms (Kruskal–Wallis (KW) = 4.056; p < 0.001). The combination of full-time farming and the use of hospital and individual pens improved gross margin (€18/ewe, p = 0.028). It is concluded that on-farm management practices affect both lamb mortality and flock gross margin.

Download Full-text

Risk factors associated with subclinical mastitis in dairy cows reared in district Ganderbal, Jammu and Kashmir

Journal of Veterinary and Animal Sciences ◽

10.51966/jvas.2021.52.4.418-422 ◽

2021 ◽

Vol 52 (4) ◽

Author(s):

Ali A. ◽

Ganie S.A. ◽

Mir M. R. ◽

Ahmad S.B. ◽

Bhat R.R. ◽

...

Keyword(s):

Risk Factors ◽

Dairy Cows ◽

Subclinical Mastitis ◽

Cross Sectional Study ◽

Cross Sectional ◽

Jammu And Kashmir ◽

Factors Associated ◽

Lactation Stage ◽

Holstein Friesian ◽

Intensive System

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%).

Download Full-text

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.

Download Full-text