R.D. Shaver
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Secondary analysis of feed intake, calcemia, and assessment of immune function in the subsequent periparturient period of cows that responded to high and low-energy diets during late lactation Open
The purpose of this study was to use a secondary analysis to investigate the use of feeding high and low-energy diets to alter BCS at dry-off, and to assess the subsequent changes in BCS on feed intake, calcemia, and assessment of immune f…
Effect of cutting height on the nutritive value, dry matter yield, and fermentation profile of whole-plant corn forage and silage through a meta-analysis Open
The objectives of this study were to (1) evaluate the effect of cutting height during harvest on the nutrient composition, fermentation profile, and DM yield of whole-plant corn forage and silage and (2) evaluate the effect of cutting heig…
Effects of high-energy and low-energy diets during late lactation on the subsequent dry period and lactation of Holstein dairy cows Open
Our primary objective was to investigate the effect of 2 dietary treatments differing in energy density during late lactation on body reserves and the subsequent effects on the next dry period and lactation of high-producing Holstein cows.…
Individual animal variability in rumination, activity, and lying behavior during the periparturient period of dairy cattle Open
The aim of the current study was to determine individual animal variability in rumination, activity, and lying behavior during the periparturient period within the context of dairy cattle nutrition, social, and physical environment. Holste…
Effects of feeding rumen-protected methionine pre- and postpartum in multiparous Holstein cows: Health disorders and interactions with production and reproduction Open
Study objectives were to evaluate the effects of feeding rumen-protected Met (RPM) in pre- and postpartum total mixed rations (TMR) on health disorders and the interactions of health disorders with lactation and reproductive performance. M…
View article: Relationships among total mixed ration nutritional components and reproductive performance in high-producing dairy herds
Relationships among total mixed ration nutritional components and reproductive performance in high-producing dairy herds Open
The main objective of the present study was to determine whether composition of total mixed ration influences reproductive performance in high-producing commercial dairy farms. Dairy producers and nutritional consultants from 48 dairy farm…
Graduate Student Literature Review: Considerations for nutritional grouping in dairy farms Open
Each cow in a group has different nutritional requirements even if the group is formed by cows of similar age, number of lactations, and lactation stage. Common dairy farm management setup does not support formulating a diet that accuratel…
Effects of feeding rumen-protected methionine pre- and postpartum on reproductive outcomes of multiparous Holstein cows Open
Our primary objective was to evaluate the effect of feeding rumen-protected Met (RPM) in the pre- and postpartum total mixed ration (TMR) on pregnancy per artificial insemination (AI) and pregnancy loss in multiparous Holstein cows. We als…
Effects of feeding rumen-protected methionine pre- and postpartum in multiparous Holstein cows: Lactation performance and plasma amino acid concentrations Open
Objectives were to evaluate the effect of feeding rumen-protected methionine (RPM) in pre- and postpartum total mix ration (TMR) on lactation performance and plasma AA concentrations in dairy cows. A total of 470 multiparous Holstein cows …
Letter to the Editor: Silage manuscripts in the Journal of Dairy Science Open
As silage researchers who have collectively published hundreds of articles in the Journal of Dairy Science, we are writing to share two concerns with you, and we appreciate this opportunity for discussion. The first concern is that we unde…
Improving nutritional accuracy and economics through a multiple ration-grouping strategy Open
The objective of this study was to develop a model application to systematize nutritional grouping (NG) management in commercial dairy farms. The model has 4 sub-sections: (1) real-time data stream integration, (2) calculation of nutrition…
An income over feed cost nutritional grouping strategy Open
This study introduces a new nutritional grouping method, OptiGroup, which maximizes milk income over feed cost (IOFC) using a mixed-integer nonlinear programming optimization algorithm. Analyses compared the OptiGroup with the cluster meth…
View article: Silage review: Interpretation of chemical, microbial, and organoleptic components of silages
Silage review: Interpretation of chemical, microbial, and organoleptic components of silages Open
The goal of making silage is to produce a stable feed with a high recovery of dry matter, energy, and highly digestible nutrients compared with the fresh crop. Microbial fermentation in the silo produces an array of end products and can ch…
Silage review: Recent advances and future technologies for whole-plant and fractionated corn silage harvesting Open
Over the last 25 years, whole-plant corn silage has become an important and popular feedstuff for dairy production. Copious research has been dedicated to the development and evaluation of alternatives to enhance the nutritive value of who…
Repro Money: An Extension Program to Improve Dairy Farm Reproductive Performance Open
A farmer-directed, team-based Extension program (Repro Money) was developed and executed by the University of Wisconsin–Madison Department of Dairy Science in collaboration with University of Wisconsin–Extension. The goal of the Repro Mone…
Effect of feeding rumen-protected methionine on productive and reproductive performance of dairy cows Open
The objectives of this study were to evaluate the effects of daily top-dressing (individually feeding on the top of the total mixed ration) with rumen-protected methionine (RPM) from 30 ± 3 until 126 ± 3 Days in milk on productive and repr…
Effects of propylene glycol or elevated luteinizing hormone during follicle development on ovulation, fertilization, and early embryo development† Open
Seventeen nonlactating Holstein cows were superovulated in a Latin-square designed experiment to determine the effects of increased propylene glycol (PROP) and luteinizing hormone (LH) during antral follicle development on ovarian function…
Producing More Milk Using More High-Quality Forages Open
Key forage quality indicators for high-producing dairy cows will be presented and discussed. New technologies to improve forage quality will be emphasized in this session.
Dairy Performance Example with Enogen Feed Corn Open
Presented as part of the post conference seminar, hosted by Syngenta, this paper discusses the performance of dairy cows fed Enogen Feed hybrids.
Relationship between processing score and kernel-fraction particle size in whole-plant corn silage Open
Kernel processing increases starch digestibility in whole-plant corn silage (WPCS). Corn silage processing score (CSPS), the percentage of starch passing through a 4.75-mm sieve, is widely used to assess degree of kernel breakage in WPCS. …