The genetic architecture of complete blood counts in lactating Holstein dairy cows
The objective of this study is to determine the heritability of CBC traits and identify genomic regions that are associated with CBC measurements in lactating Holstein dairy cattle. The heritability of CBCs was estimated using a Bayes C0 model. The study population consisted of 388 cows with genotypes at roughly 75,000 markers and 16 different CBC phenotypes taken at one to three time points (n = 33, 131, and 224 for 1, 2, and 3 time points, respectively). Heritabilities ranged from 0.00 ± 0.00 (red cell distribution width) to 0.68 ± 0.06 (lymphocytes). A total of 96 different 1-Mb windows were identified that explained ...
Source: Frontiers in Genetics - March 27, 2024 Category: Genetics & Stem Cells Source Type: research
Genome-wide association study for in vitro digestibility and related traits in triticale forage
Triticale is making its way on dairy farms as an alternative forage crop. This requires the availability of high-yielding triticale varieties with good digestibility. Triticale forage breeding mainly focussed ... (Source: BMC Plant Biology)
Source: BMC Plant Biology - March 27, 2024 Category: Biology Authors: Anneleen De Zutter, Maria Chiara Piro, Steven Maenhout, Hans Peter Maurer, Johan De Boever, Hilde Muylle, Isabel Rold án-Ruiz and Geert Haesaert Tags: Research Source Type: research
Bird flu detected in US dairy cows – here’s what you need to know
The US Department of Agriculture has detected bird flu in dairy cows from Texas and Kansas – the first time the virus has been found in cattle (Source: New Scientist - Health)
Source: New Scientist - Health - March 26, 2024 Category: Consumer Health News Source Type: research
Reproducibility and validity of a 45 item food-frequency questionnaire for inuit in Greenland
Int J Circumpolar Health. 2024 Dec;83(1):2332008. doi: 10.1080/22423982.2024.2332008. Epub 2024 Mar 26.ABSTRACTSince 1993, dietary assessment has been carried out in Greenland as part of recurrent population health surveys. In preparation for the next survey in 2024, 91 participants from the survey in 2018 were selected for a validation study of the Food Frequency Questionnaire (FFQ). The 91 participants were reinterviewed 38-50 months after the first FFQ and invited to complete a food diary. As part of the 2018 survey, blood was analysed for mercury. The food diary was completed by 65 participants. The agreement between t...
Source: International Journal of Circumpolar Health - March 26, 2024 Category: International Medicine & Public Health Authors: Peter Bjerregaard Ingelise Olesen Source Type: research
Outbreak of persistently infected heifer calves with bovine viral diarrhea virus subgenotypes 1b and 1d in a BVDV-vaccinated open dairy herd
This study was conducted in a high-yielding open dairy cattle herd that frequently acquired heifers from neighboring areas for replacement. The farm monitors the birth of PI calves by screening all calves born using an ELISA (IDEXX) for BVDV antigen detection. All calves aged 1-7 days were evaluated. For positive and suspected results, the ELISA was repeated when the calves were close to one month old. A total of 294 heifer calves were evaluated between February and March 2021. Of these, 99 (33.7%) had positive ELISA results and were considered PI calves. To evaluate the predominant BVDV species and subgenotypes in this ou...
Source: Acta Tropica - March 26, 2024 Category: Infectious Diseases Authors: Juliana Torres Tomazi Fritzen Natalia Zaparoli Zucoloto Elis Lorenzetti Alice Fernandes Alfieri Amauri Alcindo Alfieri Source Type: research
Reproducibility and validity of a 45 item food-frequency questionnaire for inuit in Greenland
Int J Circumpolar Health. 2024 Dec;83(1):2332008. doi: 10.1080/22423982.2024.2332008. Epub 2024 Mar 26.ABSTRACTSince 1993, dietary assessment has been carried out in Greenland as part of recurrent population health surveys. In preparation for the next survey in 2024, 91 participants from the survey in 2018 were selected for a validation study of the Food Frequency Questionnaire (FFQ). The 91 participants were reinterviewed 38-50 months after the first FFQ and invited to complete a food diary. As part of the 2018 survey, blood was analysed for mercury. The food diary was completed by 65 participants. The agreement between t...
Source: International Journal of Circumpolar Health - March 26, 2024 Category: International Medicine & Public Health Authors: Peter Bjerregaard Ingelise Olesen Source Type: research
Outbreak of persistently infected heifer calves with bovine viral diarrhea virus subgenotypes 1b and 1d in a BVDV-vaccinated open dairy herd
This study was conducted in a high-yielding open dairy cattle herd that frequently acquired heifers from neighboring areas for replacement. The farm monitors the birth of PI calves by screening all calves born using an ELISA (IDEXX) for BVDV antigen detection. All calves aged 1-7 days were evaluated. For positive and suspected results, the ELISA was repeated when the calves were close to one month old. A total of 294 heifer calves were evaluated between February and March 2021. Of these, 99 (33.7 %) had positive ELISA results and were considered PI calves. To evaluate the predominant BVDV species and subgenotypes in this o...
Source: Acta Tropica - March 26, 2024 Category: Infectious Diseases Authors: Juliana Torres Tomazi Fritzen Natalia Zaparoli Zucoloto Elis Lorenzetti Alice Fernandes Alfieri Amauri Alcindo Alfieri Source Type: research
Viruses, Vol. 16, Pages 504: Sequences Related to Chimay Rhabdovirus Are Widely Distributed in Ixodes ricinus Ticks across England and Wales
holas Johnson
Ticks are the main arthropod vector of pathogens to humans and livestock in the British Isles. Despite their role as a vector of disease, many aspects of tick biology, ecology, and microbial association are poorly understood. To address this, we investigated the composition of the microbiome of adult and nymphal Ixodes ricinus ticks. The ticks were collected on a dairy farm in Southwest England and RNA extracted for whole genome sequencing. Sequences were detected from a range of microorganisms, particularly tick-associated viruses, bacteria, and nematodes. A majority of the viruses were attributed to phl...
Source: Viruses - March 26, 2024 Category: Virology Authors: Mirjam Schilling Megan Golding Ben P. Jones Karen L. Mansfield Sara Gandy Jolyon Medlock Nicholas Johnson Tags: Brief Report Source Type: research
Level of aflatoxins in dairy feeds, poultry feeds, and feed ingredients produced by feed factories in Addis Ababa, Ethiopia
The objective of this study was to detect and quantify the level of aflatoxins (B1, B2, G1, G2, and total aflatoxin) in dairy feeds, poultry (layer and broiler) feeds, and feed ingredients produced in Addis Ababa. A total of 42 feeds and feed ingredients consisting of dairy feeds (n = 5), poultry broiler feeds (n = 6), layer feeds (n = 6), and feed ingredients (n = 25) were collected from feed factories in the city and analyzed in fresh weigh basis. The aflatoxins were analyzed using high-performance liquid chromatography after clean-up with immunoaffinity columns. Aflatoxin B1 levels in feeds ranged from 5...
Source: Mycotoxin Research - March 26, 2024 Category: Toxicology Source Type: research
Genes, Vol. 15, Pages 412: Genetic Background of Blood & beta;-Hydroxybutyrate Acid Concentrations in Early-Lactating Holstein Dairy Cows Based on Genome-Wide Association Analyses
This study aimed to estimate the genetic parameters of blood BHB and conducted a genome-wide association study (GWAS) based on the estimated breeding value. Phenotypic data were collected from December 2019 to August 2023, comprising blood BHB concentrations in 45,617 Holstein cows during the three weeks post-calving across seven dairy farms. Genotypic data were obtained using the Neogen Geneseek Genomic Profiler (GGP) Bovine 100 K SNP Chip and GGP Bovine SNP50 v3 (Illumina Inc., San Diego, CA, USA) for genotyping. The estimated heritability and repeatability values for blood BHB levels were 0.167 and 0.175, respectively. ...
Source: Genes - March 26, 2024 Category: Genetics & Stem Cells Authors: Yueqiang Wang Zhenyu Wang Wenhui Liu Shuoqi Xie Xiaoli Ren Lei Yan Dong Liang Tengyun Gao Tong Fu Zhen Zhang Hetian Huang Tags: Article Source Type: research
Environmental impact of Norwegian self-selected diets: comparing current intake with national dietary guidelines and EAT-Lancet targets
CONCLUSIONS: The Norwegian FBDG, while not as environmentally friendly as the EAT-Lancet reference diet, can still be an important tool in lessening environmental burden of Norwegian diets.PMID:38523532 | DOI:10.1017/S1368980024000715 (Source: Public Health Nutrition)
Source: Public Health Nutrition - March 25, 2024 Category: International Medicine & Public Health Authors: Julie Marie Lengle Marie Michaelsen Bj øntegaard Monica Hauger Carlsen Sepideh Jafarzadeh Lene Frost Andersen Source Type: research
Evaluation of the Antimicrobial, Cytotoxic, and Physical Properties of Selected Nano-Complexes in Bovine Udder Inflammatory Pathogen Control
CONCLUSION: Synergistic effects of nanoparticles and no toxicity to bovine and human cells might, in the future, be an effective alternative in the fight against microorganisms responsible for mastitis, and the implementation of research results in practice would reduce the percentage of dairy cows suffering from mastitis. The problem of increasing antibiotic resistance is posing a global threat to human's and animal's health, and requires comprehensive research to evaluate the potential use of nanoparticles - especially their complexes - as well as to determine whether nanoparticles are safe for the breeders and the anima...
Source: Appl Human Sci - March 25, 2024 Category: Physiology Authors: Mateusz Wierzbicki Magdalena Kot Agata Lange Aleksandra Kali ńska Marcin Go łębiewski S ławomir Jaworski Source Type: research
Environmental impact of Norwegian self-selected diets: comparing current intake with national dietary guidelines and EAT-Lancet targets
CONCLUSIONS: The Norwegian FBDG, while not as environmentally friendly as the EAT-Lancet reference diet, can still be an important tool in lessening environmental burden of Norwegian diets.PMID:38523532 | DOI:10.1017/S1368980024000715 (Source: Public Health Nutrition)
Source: Public Health Nutrition - March 25, 2024 Category: International Medicine & Public Health Authors: Julie Marie Lengle Marie Michaelsen Bj øntegaard Monica Hauger Carlsen Sepideh Jafarzadeh Lene Frost Andersen Source Type: research
