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Genome-wide association analysis of heifer livability and early first calving in Holstein cattle
BackgroundThe survival and fertility of heifers are critical factors for the success of dairy farms. The mortality of heifers poses a significant...
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Heifer performance and body temperatures in open pasture versus silvopasture in mid-Atlantic USA
Heat stress is of growing concern for producers and costs the livestock industry > $2B annually, with predictions that this cost will increase with...
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Preweaning period is a critical window for rumen microbial regulation of average daily gain in Holstein heifer calves
BackgroundRumen bacterial groups can affect growth performance, such as average daily gain (ADG), feed intake, and efficiency. The study aimed to...
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Holoprosencephalia, hypoplasia of corpus callosum and cerebral heterotopia in a male belted Galloway heifer with adipsia
BackgroundSpecialized neurons in the diencephalon detect blood hypernatremia in dehydrated animals. These neurons are connected with the pituitary...
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A high plane of nutrition during early life alters the hypothalamic transcriptome of heifer calves
The aim was to examine the effect of rapid body weight gain during early calfhood consistent with earlier sexual development on the transcriptional...
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Genotype-by-environment interaction in Holstein heifer fertility traits using single-step genomic reaction norm models
BackgroundThe effect of heat stress on livestock production is a worldwide issue. Animal performance is influenced by exposure to harsh environmental...
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Bovine campylobacteriosis in heifer: pathogenesis study and insights in the conventional and molecular diagnosis in an experimental bovine model and field cases
Campylobacter fetus spp. is a bacterium associated to reproductive losses in cattle worldwide. It is a venereal infectious disease known as bovine...
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Additive Bayesian network analysis of the relationship between bovine respiratory disease and management practices in dairy heifer calves at pre-weaning stage
BackgroundNursery farms that accept nursing and growing pre-weaned heifer calves from private dairy farms must work to prevent bovine respiratory...
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Beef heifer fertility: importance of management practices and technological advancements
The development of replacement heifers is at the core of cow-calf beef production systems. In 2020, the USDA, National Agricultural Statistics...
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Effect of plane of nutrition in early life on the transcriptome of visceral adipose tissue in Angus heifer calves
Adipose tissue represents not only an important energy storage tissue but also a major endocrine organ within the body, influencing many biochemical...
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Effect of housing improvement and other factors on the growth of heifer calves on Kenyan smallholder dairy farms
This trial evaluated average daily gain (ADG) effects of heifer calves (< 1 year old) from affordable housing improvements to the roof and flooring...
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Metabolomic changes in polyunsaturated fatty acids and eicosanoids as diagnostic biomarkers in Mycobacterium avium ssp. paratuberculosis (MAP)-inoculated Holstein–Friesian heifers
Mycobacterium avium subspecies paratuberculosis (MAP) is the causative organism of Johne’s disease, a chronic granulomatous enteritis of ruminants....
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Relationship of Growth Rates to Prenatal Micronutrient Supplementation in Replacement Heifers
AbstractIn accordance with the developmental origins of health and disease (DoHaD) hypotheses, the intrauterine fetal growth environments have a...
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Genome-wide association and expression quantitative trait loci in cattle reveals common genes regulating mammalian fertility
Most genetic variants associated with fertility in mammals fall in non-coding regions of the genome and it is unclear how these variants affect...
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A Bos taurus sequencing methods benchmark for assembly, haploty**, and variant calling
Inspired by the production of reference data sets in the Genome in a Bottle project, we sequenced one Charolais heifer with different technologies:...
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Identifying pleiotropic variants and candidate genes for fertility and reproduction traits in Holstein cattle via association studies based on imputed whole-genome sequence genotypes
BackgroundGenetic progress for fertility and reproduction traits in dairy cattle has been limited due to the low heritability of most indicator...
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Residual feed intake divergence during the preweaning period is associated with unique hindgut microbiome and metabolome profiles in neonatal Holstein heifer calves
BackgroundRecent studies underscored that divergence in residual feed intake (RFI) in mature beef and dairy cattle is associated with changes in...
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Distortion of Mendelian segregation across the Angus cattle genome uncovering regions affecting reproduction
Nowadays, the availability of genotyped trios (sire-dam-offspring) in the livestock industry enables the implementation of the transmission ratio...
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Civil Society Organisations and Community Partnership for Sustainable Livelihoods and Development in Ward 7 of Chivi District, Masvingo Province, Zimbabwe
A symbiotic partnership between civil society organisationsCivil society organisations and rural communities is an important element for...
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Effects of different milk feeding levels and frequencies on performance of Holstein heifers during weaning and first lactation
In the present study, the effects of milk feeding amount and feeding frequency (FF) on performance, blood metabolites, rumen fermentation, and...
