C.A. Risco
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View article: Investigating the Use of Dry Matter Intake and Energy Balance Prepartum as Predictors of Digestive Disorders Postpartum
Investigating the Use of Dry Matter Intake and Energy Balance Prepartum as Predictors of Digestive Disorders Postpartum Open
One objective was to evaluate the association of dry matter intake as a percentage of body weight (DMI%BW) and energy balance (EB) prepartum and postpartum, and energy-corrected milk (ECM) postpatum with digestive disorders postpartum. For…
View article: Economic comparison between ceftiofur-treated and nontreated dairy cows with metritis
Economic comparison between ceftiofur-treated and nontreated dairy cows with metritis Open
The objective was to investigate the economic effect of treating dairy cows with metritis using ceftiofur-free acid or leaving them untreated at the time of diagnosis. Cows with a fetid, watery, red-brownish vaginal discharge were diagnose…
View article: Effect of oral calcium administration on metabolic status and uterine health of dairy cows with reduced postpartum rumination and eating time
Effect of oral calcium administration on metabolic status and uterine health of dairy cows with reduced postpartum rumination and eating time Open
Background Hypocalcemia has detrimental effects on health and performance of dairy cows. As hypocalcemic cows show reduced feed intake, we hypothesized that cows with reduced combined rumination and eating time (CRET) may benefit from Ca s…
View article: Effect of Oral Calcium Administration on Metabolic Status and Uterine Health of Dairy Cows With Reduced Postpartum Rumination and Eating Time
Effect of Oral Calcium Administration on Metabolic Status and Uterine Health of Dairy Cows With Reduced Postpartum Rumination and Eating Time Open
BackgroundHypocalcemia has detrimental effects on health and performance of dairy cows. As hypocalcemic cows show reduced feed intake, we hypothesized that cows with lower rumination and eating time (CRET) may benefit from Ca supplementati…
View article: The economic cost of metritis in dairy herds
The economic cost of metritis in dairy herds Open
The objective of this study was to estimate the cost of metritis in dairy herds. Data from 11,733 dairy cows from 16 different farms located in 4 different regions of the United States were compiled for up to 305 d in milk, and 11,581 cows…
View article: Effects of metritis treatment strategies on health, behavior, reproductive, and productive responses of Holstein cows
Effects of metritis treatment strategies on health, behavior, reproductive, and productive responses of Holstein cows Open
Our objectives were to compare the effects of ceftiofur crystalline free acid (CCFA) and ampicillin trihydrate (AMP) treatments of cows diagnosed with metritis on uterine health, behavior, reproductive, and productive responses. A controll…
View article: Using chitosan microparticles to treat metritis in lactating dairy cows
Using chitosan microparticles to treat metritis in lactating dairy cows Open
The main objective of this study was to evaluate the efficacy of intrauterine administration of chitosan microparticles (CM) in curing metritis in dairy cows. A secondary objective was to evaluate the effects of metritis treatments on milk…
View article: Association of dry matter intake and energy balance prepartum and postpartum with health disorders postpartum: Part I. Calving disorders and metritis
Association of dry matter intake and energy balance prepartum and postpartum with health disorders postpartum: Part I. Calving disorders and metritis Open
The main objective of this study was to determine the association of dry matter intake as percentage of body weight (DMI%BW) and energy balance (EB) prepartum (-21 d relative to parturition) and postpartum (28 d) with calving disorders (CD…
View article: Association of dry matter intake and energy balance prepartum and postpartum with health disorders postpartum: Part II. Ketosis and clinical mastitis
Association of dry matter intake and energy balance prepartum and postpartum with health disorders postpartum: Part II. Ketosis and clinical mastitis Open
The main objective of this study was to determine the association of dry matter intake as percentage of body weight (DMI%BW) and energy balance (EB) prepartum (-21 d relative to parturition) and postpartum (28 d) with ketosis (n = 189) and…
View article: Epidemiologic and economic analyses of pregnancy loss attributable to mastitis in primiparous Holstein cows
Epidemiologic and economic analyses of pregnancy loss attributable to mastitis in primiparous Holstein cows Open
The main objective of the study reported here was to examine the association between pregnancy loss (PL) and previous exposure to clinical or subclinical mastitis before breeding or during gestation in primiparous Holstein cows. A secondar…
Rumination time and monitoring of health disorders during early lactation Open
The objective was to evaluate the association between changes in daily rumination time (dRT) and early stages of disease during early lactation and to assess the performance of two proposed disease detection indices. This cohort study incl…
View article: Superovulation and embryo transfer in Wagyu donors and cross-bred recipients
Superovulation and embryo transfer in Wagyu donors and cross-bred recipients Open
Embryo Transfer (ET) is a technology applied to accelerate the genetic progress of herds. Research on bovine ET has mainly focused on a few popular breeds, but the extrapolation of those results to less explored breeds might be questionabl…
View article: Effect of oral calcium bolus supplementation on rumination and activity patterns in early lactation dairy cows
Effect of oral calcium bolus supplementation on rumination and activity patterns in early lactation dairy cows Open
Subclinical hypocalcemia occurs frequently in multiparous dairy cattle during early lactation. Calcium supplements are widely used in an attempt to mitigate the substantial negative effects of subclinical hypocalcemia on health and product…
View article: Association between prepartum dry matter intake, net energy balance, and postpartum diseases in dairy cows
Association between prepartum dry matter intake, net energy balance, and postpartum diseases in dairy cows Open
The transition period in dairy cows is characterized by a drop in dry matter intake, leading to lipid mobilization in the form of nonesterified fatty acids [NEFA) and an increase in ketone bodies such as beta-hydroxybutyrate. Concentration…
View article: Pregnancy loss attributable to mastitis in primiparous Holstein cows
Pregnancy loss attributable to mastitis in primiparous Holstein cows Open
Several observational studies have produced different levels of strength of evidence indicating that mastitis can be a predisposing factor for pregnancy loss (PL) in dairy cows. In some of those studies, clinical mastitis before or after A…
View article: Evidence that mastitis can cause pregnancy loss in dairy cows: A systematic review of observational studies
Evidence that mastitis can cause pregnancy loss in dairy cows: A systematic review of observational studies Open
The objective of this study was to conduct a systematic review to identify and assess evidence and knowledge gaps in published observational studies that have investigated the relationship between mastitis and pregnancy loss (PL) in dairy …
View article: Effect of oral calcium administration on the cure and reproductive performance of Holstein cows diagnosed with puerperal metritis
Effect of oral calcium administration on the cure and reproductive performance of Holstein cows diagnosed with puerperal metritis Open
Our objective was to evaluate the effect of oral calcium administration on clinical cure, survival, subsequent presentation of peripartal health disorders, and reproductive performance of Holstein cows diagnosed with puerperal metritis (PM…
View article: Using Doppler ultrasonography on day 34 of pregnancy to predict pregnancy loss in lactating dairy cattle
Using Doppler ultrasonography on day 34 of pregnancy to predict pregnancy loss in lactating dairy cattle Open
The objective of this experiment was to determine whether uterine or ovarian vascular dynamics could be used to identify cows at risk for pregnancy loss. Our hypothesis was that cows that subsequently lose their pregnancy will have decreas…
View article: Clinical response after chitosan microparticle administration and preliminary assessment of efficacy in preventing metritis in lactating dairy cows
Clinical response after chitosan microparticle administration and preliminary assessment of efficacy in preventing metritis in lactating dairy cows Open
The objectives were to evaluate the clinical response to intrauterine administration of chitosan microparticles (CM) and to assess efficacy for preventing metritis in dairy cows. Holstein cows (n=104; 40 primiparous and 64 multiparous) at …
View article: Peripartal rumination dynamics and health status in cows calving in hot and cool seasons
Peripartal rumination dynamics and health status in cows calving in hot and cool seasons Open
Our objective was to evaluate the effect of season of calving, associated with variable levels of heat stress, on the dynamics of rumination during the prepartum period and early lactation of cows that were healthy or affected by periparta…
View article: Effects of oral calcium supplementation on productive and reproductive performance in Holstein cows
Effects of oral calcium supplementation on productive and reproductive performance in Holstein cows Open
The objectives of this experiment were to determine the effects of oral Ca supplementation on milk yield, body condition, pregnancy per artificial insemination (P/AI), and days to pregnancy in Holstein cows considered to be of low (LRM; no…
View article: Effects of oral calcium supplementation on mineral and acid-base status, energy metabolites, and health of postpartum dairy cows
Effects of oral calcium supplementation on mineral and acid-base status, energy metabolites, and health of postpartum dairy cows Open
Two experiments were conducted to characterize blood concentrations of minerals and acid-base status after oral dosing of Ca salts and to determine the effects of oral Ca on mineral and metabolic status and incidence diseases. The hypothes…
View article: Vulvovaginal laceration as a risk factor for uterine disease in postpartum dairy cows
Vulvovaginal laceration as a risk factor for uterine disease in postpartum dairy cows Open
The main objective was to evaluate the association between vulvovaginal laceration and uterine diseases in dairy cows. The secondary objectives were to evaluate the association between vulvovaginal laceration and cyclicity, and reproductiv…
View article: Associations between pregnancy-associated glycoproteins and pregnancy outcomes, milk yield, parity, and clinical diseases in high-producing dairy cows
Associations between pregnancy-associated glycoproteins and pregnancy outcomes, milk yield, parity, and clinical diseases in high-producing dairy cows Open
Pregnancy-associated glycoproteins (PAG) are produced by the ruminant placenta and secreted into the maternal circulation throughout pregnancy. The extent to which circulating PAG concentrations predict pregnancy outcomes was examined here…