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Research Article
JJ Okoh, LC Hardie, IW Haagen, BL Heins and CD Dechow* View abstract
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Genetic evaluations of cow fertility in the U.S. are primarily based on data from conventional herds. However, how well these evaluations predict fertility in organically certified systems which requires grazing and prohibits reproductive synchronization is unclear. This study aimed to assess fertility traits in organic Holstein cows, including Days Open (DOPN), Pregnancy at First Service (PG1ST), and Number of Inseminations (NSEM). The dataset included 32,572 records from 18,565 cows. A three-trait single-step animal model incorporating 74,817 DNA markers were used, with 1,339 genotyped cows, of which 898 had phenotypic records. Estimated Breeding Values (EBV) with accuracy above 50% were compared with U.S. Genomic Predicted Transmitting Ability (gPTA) for 660 bulls to assess Daughter Pregnancy Rate (DPR), Cow Conception Rate (CCR), and ..... ReadMore -
Review Article
Luc Durel*, Michael Farre, Troels Volhøj, Emmanuel Claret and Fabienne Benoît View abstract
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In Denmark, dairy farmers get to decide for themselves if a cow with Clinical Mastitis (CM) should receive antibiotics. However, it is mandatory to collect a quarter milk sample for diagnostic purpose. This sample is tested later to confirm the treatment was justified, and use proactively to implement targeted management change to reduce the new infection risk. Farmers ship the samples to a laboratory within a few days...... ReadMore
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Review Article
Luc Durel*, Michael Farre, Troels Volhøj, Emmanuel Claret4 and Fabienne Benoît View abstract
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In Denmark, dairy farmers get to decide for themselves if a cow with Clinical Mastitis (CM) should receive antibiotics. However, it is mandatory to collect a quarter milk sample for diagnostic purpose. This sample is tested later to confirm the treatment was justified, and use proactively to implement targeted management change to reduce the new infection risk. Farmers ship the samples to a laboratory within a few days. Most analyses are performed by the veterinary practices that oversee the health of the dairy farms, which means feedback takes several days. For mild or moderate cases of CM, antibiotic treatment is only beneficial for Intramammary Infections (IMIs) caused by specific organisms, including Staphylococcus aureus, Aggressive Non-aureus Staphylococci (NAS), Streptococcus species such as Str. uberis, Str. dysgalactiae, and Str..... ReadMore
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Review Article
L Durel*, D Svitačová, O Rejholcová, A Brunet and J Hnojcikova View abstract
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Currently, the average incidence of perinatal mortality in calves born to cows and heifers varies between 2 and 20% across dairy industries internationally, with the majority of countries between 5 and 8% [15]. In the newborn calf, Neonatal Calf Diarrhea (NCD) is recognized worldwide as one of the biggest hallenges for both the beef and dairy industries [12]. Enterotoxinogenic Escherichia coli (ETEC), Cryptosporidium parvum, the type-A bovine Rotavirus (RVA) and Coronavirus (BCoV) are usually seen as the most common infectious causes of NCD...... ReadMore
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Review Article
L Durel*, D Svitačová, O Rejholcová, A Brunet and J Hnojcikova View abstract
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This report details the molecular-biological detection of the Escherichia coli F41 fimbrial gene in both the vaccine strain E. coli EC/17 and the challenge strain E. coli EC/42. F41 fimbria production was identified via Polymerase Chain Reaction (PCR) utilizing oligonucleotide probes specific to a region of the gene encoding F41 fimbria. This research first assessed the specificity of the F41 primers through in silico comparative analyses with established genomic databases and evaluates the sequence identity of the targeted E. coli F41+ gene against previously published sequences. Additionally, the prevalence of the F4, F5, F6, and F41 fimbrial genes across a collection of forty-two E. coli strains is examined, and revealed that F5 and F41 fimbriae occur together in 23.8% of strains. Finally, vaccination was performed to evaluate a commer..... ReadMore
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Review Article
Luc Durel1* and Denis Jarrin View abstract
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The intramammary infusion of an antibiotic to all quarters of all cows after the last milking of the lactation or Blanket Dry Cow Therapy (BDCT) - has long been recommended for the treatment of present subclinical mastitis and prevention of new Intramammary Infection (IMI) [1], [2]. However, there has been a dramatic change in the incidence and etiology of clinical and sub-clinical mastitis, reflected in a decrease in the prevalence of contagious mastitis pathogens and an increase in the importance of the environmental pathogens such as S. uberis and E. coli [3]. Estimates show that 35% to 50% of udder quarters are pathogen-free at drying off [4], [5]. Coinciding with this, the EU Regulation 2019/6 is to prohibit the preventive use of antibiotics in food-producing animals...... ReadMore
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Review Article
Luc Durel* and Denis Jarrin View abstract
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The intramammary infusion of an antibiotic to all quarters of all cows after the last milking of the lactation or Blanket Dry Cow Therapy (BDCT) - has long been recommended for the treatment of present subclinical mastitis and prevention of new Intramammary Infection (IMI) [1], [2]. However, there has been a dramatic change in the incidence and etiology of clinical and sub-clinical mastitis, reflected in a decrease in the prevalence of contagious mastitis pathogens and an increase in the importance of the environmental pathogens such as S. uberis and E. coli [3]. Estimates show that 35% to 50% of udder quarters are pathogen-free at drying off [4], [5]. Coinciding with this, the EU Regulation 2019/6 is to prohibit the preventive use of antibiotics in food-producing animals. This legislation is an important springboard and frames a major c..... ReadMore
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Short Communication
Lisete Paiva and José Baptista* View abstract
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The biological properties of CLA are attracting the scientific community, because of its wide range of health benefits, particularly anti-carcinogenic, anti-atherosclerosis, and anti-obesity [1], anti-diabetic [2] and enhancement of immunity properties [3], demonstrated “in vivo” studies using different animal models. High quality raw milk, from Azorean lactating Holstein cows (the same breed) grazing pasture (fresh grass) during all seasons, donated by Unlimited Milk Plant, were collected in sterilized flasks, refrigerated at 4 °C and after fat adjustment (1.5% - half-skymmed) were stored at -20 °C. The commercial pasteurized and ultra pasteurized (UHT) half-skymmed (the most consumed in the Azores Islands) samples, obtained from local stores, were taken in triplicate from cows of different ages, in several lactating phases, and ob..... ReadMore
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ISSN: 2637-4749
Concepts of Dairy & Veterinary Sciences
Concepts of Dairy & Veterinary Sciences (CDVS) is an international journal established for the harvesting of animal milk – mostly from cows or goats, but also from buffaloes, sheep, horses or camels – for human consumption. A dairy is typically located on a dedicated dairy farm or in a section of a multi-purpose farm that is concerned with the harvesting of milk. Dairy Research is the field that deals with the Dairy and animal breeding, Physiology, Cell biology and endocrinology of lactation, animal science, milk production and composition, Biotechnology and food technology, properties of milk proteins and other components, dairy products such as cheese, fermented milks and spreads, relevant studies in bacteriology, enzymology and immunology, the use of milk products in other foods, and the development of methods related to Dairy Science. Dairy and Veterinary Science is a quarterly, open access, peer-reviewed journal aims to publish submissions/articles on current concepts in the field of veterinary, animal studies including animal nutrition, veterinary science physiology, veterinary medicine and behaviour, diagnosis, treatment and prevention among animal diseases including wild, domestic and avian, animal rehabilitation, animal therapy, animal care, animal physiotherapy, arthrography, Bovine Milk, Dairy Cows, Dairy Diseases, Dairy Farm, Health and Dairy Products, Homogenized Milk, Milk Born Diseases, Pasteurization, Skimmed Milk related to dairy science, etc.
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