Full Text Journal Articles by
Author D L Renaud

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A multidisciplinary approach to reduce and refine antimicrobial drugs use for diarrhoea in dairy calves.

D E Gomez, L G Arroyo, D L Renaud, L Viel, J S Weese,

This study evaluated the impact of a multidisciplinary intervention to reduce and refine antimicrobial drug use for treatment of diarrhoea in dairy calves. The intervention consisted of modification of management practices for disease prevention, health evaluation training of farm staff, implementation of an algorithm directed at antimicrobial therapy for diarrhoeic ... Read more >>

Vet J (Veterinary journal (London, England : 1997))
[2021, 274:105713]

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Associations between feeding behaviors collected from an automated milk feeder and disease in group-housed dairy calves in Ontario: A cross-sectional study.

M H Conboy, C B Winder, C Medrano-Galarza, S J LeBlanc, D B Haley, J H C Costa, M A Steele, D L Renaud,

The adoption of automated milk feeders and group housing of preweaning dairy calves has become more common in Canada; however, disease detection in group-housed calves remains a challenge. The aim of this cross-sectional study was to assess whether feeding behavior data collected from a single point in time could be ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, 104(9):10183-10193]

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Effects of delaying increase in milk allowance and type of gradual weaning program on performance and health of calves fed lower levels of milk.

S D Parsons, M A Steele, K E Leslie, D L Renaud, T J DeVries,

The objective of this study was to investigate the effects of delayed increase in milk allowance and type of gradual weaning program on the feed intake, health, and growth of male Holstein calves. Using a 2 × 2 factorial design, each male Holstein calf was randomly assigned to 1 of ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, 104(10):11176-11192]

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The effect of neomycin inclusion in milk replacer on the health, growth, and performance of male Holstein calves during preweaning.

L N Buss, T T Yohe, L R Cangiano, D L Renaud, A J Keunen, L L Guan, M A Steele,

The prophylactic use of oral antimicrobials, such as neomycin, in milk replacer (MR) or whole milk is a common practice in calf-rearing that is thought to aid in preventing disease. Heavy reliance on antimicrobials is of concern not only because of the development of antimicrobial resistance, but also because of ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, 104(7):8188-8201]

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Nutraceutical intervention with colostrum replacer: Can we reduce disease hazard, ameliorate disease severity, and improve performance in preweaned dairy calves?

M C Cantor, D L Renaud, J H C Costa,

The objective of this randomized clinical trial was to determine if an intervention with colostrum replacer (CR; Premolac Plus, Zinpro; 125 g/d fed for 3 d) or a placebo milk replacer (Cows Match, Land O'Lakes Inc.; 125 g/d for 3 d) following a triggered alarm could ameliorate disease bouts in ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, 104(6):7168-7176]

Cited: 1 time

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Hot topic: Accuracy of refractometry as an indirect method to measure failed transfer of passive immunity in dairy calves fed colostrum replacer and maternal colostrum.

A J Lopez, M A Steele, M Nagorske, R Sargent, D L Renaud,

Serum total protein (STP) refractometry is a widely used indicator of failed transfer of passive immunity (FTPI), defined as serum IgG concentrations of <10 mg/mL or STP levels <5.2 g/dL measured at 24 h of life. However, recent reports have demonstrated that refractometry could be inaccurate at estimating serum IgG ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, 104(2):2032-2039]

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The effect of Cryptosporidiumparvum, rotavirus, and coronavirus infection on the health and performance of male dairy calves.

D L Renaud, C Rot, J Marshall, M A Steele,

The objective of this prospective cohort study was to investigate the effect of bovine coronavirus (BCoV), bovine rotavirus (BRoV), and Cryptosporidiumparvum on dairy calf health and performance and to determine the prevalence of these pathogens. A total of 198 male dairy calves housed at a grain-fed veal facility were examined ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, 104(2):2151-2163]

Cited: 2 times

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Short communication: Effects of different blood buffers administered in electrolyte solution to grain-fed veal calves experiencing diarrhea.

D R Wood, R M Blome, L C Ribeiro, A J Keunen, B W Keunen, G W Smith, D L Renaud,

Calf diarrhea can commonly lead to dehydration and metabolic acidosis due to the loss of fluid and electrolytes. The objective of this randomized clinical trial was to examine differences between treating male dairy calves experiencing diarrhea with either a basic bicarbonate electrolyte powder (BBP) composed of sodium bicarbonate (50.7 mmol/L); ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, 104(1):957-962]

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Identification of biomarkers measured upon arrival associated with morbidity, mortality, and average daily gain in grain-fed veal calves.

H M Goetz, D F Kelton, J H C Costa, C B Winder, D L Renaud,

There is a strong need for management strategies that help reduce the incidence of disease and subsequent antimicrobial use in the veal industry. Biomarkers could serve as useful tools that allow producers to take preventative measures before clinical problems occur. The objective of this prospective cohort study was to identify ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, 104(1):874-885]

Cited: 1 time

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Communication preferences and social media engagement among Canadian dairy producers.

S M Roche, D L Renaud, R Genore, C A Bauman, S Croyle, H W Barkema, J Dubuc, G P Keefe, D F Kelton,

The objective of this study was to determine communication preferences of dairy producers in Canada. A secondary objective was to evaluate social media engagement of dairy producers. A survey was administered to Canadian dairy producers between March and April, 2015 to collect information on current management practices on their farms. ... Read more >>

J Dairy Sci (Journal of dairy science)
[2020, 103(12):12128-12139]

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Short communication: Effect of delaying the first colostrum feeding on small intestinal histomorphology and serum insulin-like growth factor-1 concentrations in neonatal male Holstein calves.

A J Fischer-Tlustos, J Pyo, Y Song, D L Renaud, L L Guan, M A Steele,

The primary objective of this study was to determine the effect of delaying the first colostrum feeding on small intestinal histomorphology and serum insulin-like growth factor-1 (IGF-1) concentrations, and the secondary objective was to characterize the ultrastructure of the small intestine of neonatal calves at 51 h of life. Twenty-seven ... Read more >>

J Dairy Sci (Journal of dairy science)
[2020, 103(12):12109-12116]

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Technical note: Is fecal consistency scoring an accurate measure of fecal dry matter in dairy calves?

D L Renaud, L Buss, J N Wilms, M A Steele,

The objective of this cross-sectional study was to evaluate the accuracy of fecal consistency scoring as a measure of fecal dry matter (DM) in dairy calves. This study was conducted at a commercial grain-fed veal facility in southwestern Ontario. A total of 160 calves arrived at the facility in 2 ... Read more >>

J Dairy Sci (Journal of dairy science)
[2020, 103(11):10709-10714]

Cited: 1 time

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Differing planes of pre- and postweaning phase nutrition in Holstein heifers: I. Effects on feed intake, growth efficiency, and metabolic and development indicators.

J P Rosadiuk, T C Bruinjé, F Moslemipur, A J Fischer-Tlustos, D L Renaud, D J Ambrose, M A Steele,

The objectives of this study were to determine the effects of pre- and postweaning planes of nutrition on feed and metabolizable energy (ME) intake, growth, concentrations of glucose, insulin, insulin-like growth factor 1 (IGF-1), and β-hydroxybutyrate (BHB) in blood and rumen volatile fatty acids (VFA) from birth to 25 wk ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, 104(1):1136-1152]

Cited: 2 times

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Assessing the utility of leukocyte differential cell counts for predicting morbidity, mortality, and growth in a grain-fed veal facility: A prospective single cohort study.

T E von Konigslow, D L Renaud, T F Duffield, C B Winder, D F Kelton,

Selective antimicrobial treatment strategies present a means to reduce antimicrobial use at the time of arrival at a veal or dairy beef operation. On-farm machine leukocyte differential cell counts (DCC) that can be acquired quickly may be useful to augment calf risk identification protocols. The objective of this study was ... Read more >>

J Dairy Sci (Journal of dairy science)
[2020, 103(10):9332-9344]

Cited: 1 time

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Passive immunity and colostrum management practices on Ontario dairy farms and auction facilities: A cross-sectional study.

D L Renaud, M A Steele, R Genore, S M Roche, C B Winder,

Failed transfer of passive immunity (FTPI) in dairy calves has substantial health consequences, but there have been no recently published estimates of the prevalence of FTPI on Ontario dairy farms. The major objectives of this cross-sectional study were to determine the level of FTPI in dairy calves across the province ... Read more >>

J Dairy Sci (Journal of dairy science)
[2020, 103(9):8369-8377]

Cited: 2 times

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Investigation of weaning strategy and solid feed location for dairy calves individually fed with an automated milk feeding system.

S D Parsons, M A Steele, K E Leslie, D L Renaud, T J DeVries,

The objective of this study was to investigate the effect of 2 gradual weaning programs and 2 locations of solid feed within individual calf pens on feed intake, growth, and behavior of calves fed milk by an automated milk feeder. Using a 2 × 2 factorial design, 60 female calves ... Read more >>

J Dairy Sci (Journal of dairy science)
[2020, 103(7):6533-6556]

Cited: 0 times

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Short communication: Describing mortality and euthanasia practices on Canadian dairy farms.

S M Roche, R Genore, D L Renaud, D A Shock, C Bauman, S Croyle, H W Barkema, J Dubuc, G P Keefe, D F Kelton,

The objective of this study was to describe mortality rates and euthanasia practices used for cows, heifer calves, and male dairy calves on Canadian dairy farms. An internet survey was administered to Canadian dairy producers between March and April 2015 to collect information on current management practices. Approximately 81% (867/1,076) ... Read more >>

J Dairy Sci (Journal of dairy science)
[2020, 103(4):3599-3605]

Cited: 2 times

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Canadian National Dairy Study: Describing Canadian dairy producer practices and perceptions surrounding cull cow management.

S M Roche, D L Renaud, R Genore, D A Shock, C Bauman, S Croyle, H W Barkema, J Dubuc, G P Keefe, D F Kelton,

Farmer decisions surrounding culling have an important effect on the health and welfare of cull cows. The objectives of this study were to describe the self-reported shipment behaviors of Canadian dairy producers and understand farmer perspectives on the factors that were most influential in their decision to cull a cow. ... Read more >>

J Dairy Sci (Journal of dairy science)
[2020, 103(4):3414-3421]

Cited: 1 time

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Risk factors associated with failed transfer of passive immunity in male and female dairy calves: A 2008 retrospective cross-sectional study.

D L Renaud, K M Waalderbos, L Beavers, T F Duffield, K E Leslie, M C Windeyer,

This retrospective cross-sectional study was designed to identify risk factors associated with failed transfer of passive immunity (FTPI) and to determine differences in colostrum management between male and female dairy calves. Research technicians visited a total of 16 commercial dairy farms weekly. For each calf born on these farms, the ... Read more >>

J Dairy Sci (Journal of dairy science)
[2020, 103(4):3521-3528]

Cited: 3 times

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Short communication: Risk factors identified at arrival associated with average daily gain at a grain-fed veal facility: A prospective single cohort study.

K Scott, D F Kelton, T F Duffield, D L Renaud,

The primary objective of this prospective cohort study was to identify factors evaluated upon arrival at a grain-fed veal facility that were associated with increased growth. A secondary objective was to determine if the factors associated with average daily gain (ADG) varied between the pre- and postweaning periods. Calves were ... Read more >>

J Dairy Sci (Journal of dairy science)
[2020, 103(1):858-863]

Cited: 0 times

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Risk factors identified on arrival associated with morbidity and mortality at a grain-fed veal facility: A prospective, single-cohort study.

K Scott, D F Kelton, T F Duffield, D L Renaud,

High levels of morbidity, mortality, and antimicrobial use are common in the veal industry. For the sustainability of the industry, it is important to address these challenges and determine factors that can be used to improve animal health and welfare. The objectives of this prospective observational cohort study were to ... Read more >>

J Dairy Sci (Journal of dairy science)
[2019, 102(10):9224-9235]

Cited: 2 times

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Effect of health status upon arrival at a single milk-fed veal facility on breakeven purchase price of calves.

D L Renaud, K C Dhuyvetter, S J LeBlanc, D F Kelton, T F Duffield, M W Overton,

Male calves are purchased from the dairy industry in North America to produce red meat. The price paid for male calves varies widely, and it is unclear which variables influence the price paid for each calf. The objective of this study was to assess how the health traits of calves ... Read more >>

J Dairy Sci (Journal of dairy science)
[2019, 102(9):8441-8453]

Cited: 1 time

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Short communication: Effects of porcine plasma or combined sodium butyrate and Bacillus subtilis on growth and health of grain-fed veal calves.

D R Wood, R M Blome, A J Keunen, B W Keunen, J D Crenshaw, J M Campbell, D L Renaud,

The objective of this study was to evaluate the effects of incorporating 2 commonly used additives or spray-dried porcine plasma in calf milk replacer (CMR) on calf performance and health. Male Holstein calves (n = 158) transported from auction barns and local dairy farms were randomly assigned to receive 1 ... Read more >>

J Dairy Sci (Journal of dairy science)
[2019, 102(8):7183-7188]

Cited: 1 time

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Saccharomyces cerevisiae boulardii CNCM I-1079 affects health, growth, and fecal microbiota in milk-fed veal calves.

C Villot, T Ma, D L Renaud, M H Ghaffari, D J Gibson, A Skidmore, E Chevaux, L L Guan, M A Steele,

The objective of this study was to investigate the effect of one specific strain of yeast, Saccharomyces cerevisiae boulardii CNCM I-1079 (SCB), on the growth performance, health, and fecal bacterial profile of veal calves. A total of 84 animals were enrolled in an experiment at a commercial veal farm for ... Read more >>

J Dairy Sci (Journal of dairy science)
[2019, 102(8):7011-7025]

Cited: 4 times

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Validation of an automated cell counter to determine leukocyte differential counts in neonatal Holstein calves.

T E von Konigslow, D L Renaud, T F Duffield, V Higginson, D F Kelton,

Recent advances in the understanding of risk factors and biomarkers in calves entering rearing facilities show promise for identifying high-risk calves on arrival at veal and dairy beef operations. Rapid automated leukocyte differential cell counts may be a good addition for augmenting or refining calf risk identification on-farm. The objective ... Read more >>

J Dairy Sci (Journal of dairy science)
[2019, 102(8):7445-7452]

Cited: 1 time

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