A5069280508- Reproductive Physiology in Livestock
- Genetic and phenotypic traits in livestock
- Reproductive Biology and Fertility
- Effects of Environmental Stressors on Livestock
- Milk Quality and Mastitis in Dairy Cows
- Ruminant Nutrition and Digestive Physiology
- Sperm and Testicular Function
- Animal Behavior and Welfare Studies
- Ovarian function and disorders
- Probiotics and Fermented Foods
- Birth, Development, and Health
- Animal Disease Management and Epidemiology
- Reproductive System and Pregnancy
- Microbial infections and disease research
- Epigenetics and DNA Methylation
- Animal health and immunology
- Fatty Acid Research and Health
- Agriculture and Farm Safety
- Zoonotic diseases and public health
- Veterinary Practice and Education Studies
- T-cell and Retrovirus Studies
- Agriculture Sustainability and Environmental Impact
- Meat and Animal Product Quality
- Genetic Syndromes and Imprinting
- Brucella: diagnosis, epidemiology, treatment
Swedish University of Agricultural Sciences
2016-2025
WSP Sverige (Sweden)
2019-2021
Science for Life Laboratory
2001-2018
Uppsala University
2003
It is widely recognized that subclinical mastitis (SCM) an extensive problem in the dairy industry worldwide. of particular concern developing countries. The aim this study was to establish prevalence SCM cattle urban and peri-urban areas Kampala, Uganda gain information about pathogens antibiotic resistance patterns. conducted as a field 18 smallholder farms Uganda. All cows at were physically examined, with signs clinical excluded. Cows (n = 195) tested California Mastitis Test (CMT),...
The aim of this cross-sectional study was to evaluate the prevalence subclinical mastitis (SCM) and associated risk factors in dairy cows peri-urban areas Kigali, Rwanda, identify causative udder pathogens. A sample 256 from 25 herds screened with California Mastitis Test (CMT), quarters CMT score ≥ 3 (scale 1-5) were milk sampled for culture final bacteriological identification matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS). All resultant...
The aim of this study was to generate knowledge on the most important milk quality and safety attributes, including somatic cell count (SCC), total bacterial (TBC), Escherichia coli, Salmonella, Brucella spp. antibodies antibiotic residues in chain from farm collection center (MCC) Rwanda. In addition, we investigated management factors associated with high TBC, SCC, Salmonella counts. Raw sampled at MCC levels. Milk samples were taken dairy farms linked 2 selected each 4 provinces total,...
Abstract A cross-sectional study on 156 smallholder dairy farms in Rwanda was carried out to assess the association between farm management practices and milk yield quality. pre-tested questionnaire used collect data cow characteristics practices. Milk recorded at household level, composition monitored using a Lactoscan device (Milk Analyzer). Somatic cell count (SCC) determined DeLaval counter (DCC). Delvotest SP-NT kit determine antibiotic residues raw milk. Most cows were kept...
The study aimed to investigate the superovulatory responses and embryo yield in pure Friesian, Inyambo, crossbreed cows Rwanda. research was conducted from 2018 2019, using 38 breeding donor Rwanda Agriculture Animal Resources Development Board cattle farms. Donor represented five breed genotypes: various crossbreeds (Inyambo × Inyambo Jersey Sahiwal). Superovulation induced two commercial preparations of follicle stimulating hormone (FSH): Stimufol Pluset, with three inseminations at 12-h...
<title>Abstract</title> <bold>Background:</bold> In Rwanda, various intervention initiatives have led to progress in reducing maternal and child undernutrition. However, the rate of stunting, chronic form malnutrition, remains high with about 33% children under five years stunted countrywide, especially Northern Province where stunting is 40.5%. This study aimed sample analyse spatially-explicit undernutrition determinants Rwanda through a multidisciplinary approach. <bold>Methods:</bold> A...
Extending the voluntary waiting period (VWP) for primiparous cows can have a positive impact on fertility without negative milk production per day in calving interval (CInt). We investigated effect of extended VWP during first lactation yield (MY) 2 consecutive lactations cows. The study involved 16 commercial herds southern Sweden. A total 533 Holstein and Red dairy cattle (Swedish Red, Danish Ayrshire) were randomly assigned to conventional 25 95 d (n = 252) or 145 215 281). Data calvings,...
Three experimental and three control heifers were included in the study. After a period (CP), subjected to 4 5 weeks of twice‐weekly follicular punctures (FPP1 FPP2) with two oestrous cycles between. The performed using ovum pick‐up (OPU) technique. During CP FPPs, ovarian activity was monitored by transrectal ultrasonography analyses plasma progesterone, prostaglandin F 2α (PGF ) metabolite, luteinizing hormone (LH), oestradiol follicle stimulating (FSH) levels. animals slaughtered 7 days...
Coagulase negative staphylococci (CNS) are the most common pathogens leading to subclinical mastitis (SCM) in dairy cattle Uganda. can vary between bacterial species how they cause disease. The aim of study was characterize CNS, from cows with SCM Uganda, at level. Quarter milk samples (n = 166) were collected 78 animals SCM. Bacteriological analyses carried out Makerere University, Kampala, Uganda and National Veterinary Institute (SVA), Uppsala, Sweden. found CNS (31.7%). Two found, S....
Lipopolysaccharides (LPS) from Gram negative bacteria are involved in the pathogeny of uterine diseases cows. This study aimed to investigate LPS effects on growth bovine endometrial epithelial cells (bEEC) and relationships between response tissue characteristics. Uteri 35 females were characterized for parity stage oestrous cycle. Densities glandular (dGT), CD11b+ Ki67+ measured tissue. Cells 13 dioestrus cows exposed 0, 2, 4, 8, 12, 16 or 24μg/mL LPS. Effects cycle characteristics dosage,...
The popularity of alpacas (Vicugna pacos) is increasing in Sweden as well other countries; however, knowledge about optimal management practices under Swedish conditions still limited. wide age range reported when the onset puberty can occur, between 1 and 3 years age, makes decisions difficult may be influenced by which are kept. aim this study was to find out expected start producing sperm, using testicular length body condition score a more precise indirect indicator than age. This...
Summary Three dairy heifers were examined during three consecutive oestrous cycles (control period, CP). Subsequently, the animals subjected to 4 and then 5 weeks of twice‐weekly ovum pick‐up (OPU) (FPP1 FPP2, respectively) with a recovery period (RP) two between FPP1 FPP2. After slaughtered ovaries macroscopically examined. Throughout, ovarian activity was monitored by transrectal ultrasonography concentrations plasma progesterone. During CP, all showed normal cyclicity. FPPs, occasionally...
Contents The aim of the present study was to assess effects ovum pick‐up (OPU) technique on animal well‐being. Eight dairy heifers were subjected 4 months twice‐weekly OPU. physiological response OPU recorded in four at two sessions, beginning (time 1) and end 2) 4‐month period. Heart rates measured blood analysed for cortisol, vasopressin PG‐metabolite before, during (every 5 2 min), after sessions. Reactions each subprocedure (‘restraint’, ‘epidural’, ‘device in’ ‘puncture’) closely...
One of the main sources repeat breeding in dairy cattle, caused by fertilization failure or early embryonic death, is metabolic stress during lactation. Nutrition seems also to play a role when condition seen heifers, where oocyte cytoplasmic maturation impaired. To determine whether over conditioning affects morphology, immature oocytes were collected ovum pick-up (OPU) twice weekly 5 weeks from three over-conditioned breeder heifers (RBH) and two normal virgin (VH, controls) Swedish Red...
Abstract A cross-sectional study on 156 smallholder dairy farms in Rwanda was carried out to assess the association between farm management practices and milk yield quality. pre-tested questionnaire used collect data cow characteristics practices. Milk recorded at household level, composition monitored using a Lactoscan device (Milk Analyzer). Somatic cell count (SCC) determined DeLaval counter (DCC). Delvotest SP-NT kit determine antibiotic residues raw milk. Most cows were kept...