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Meta-analysis to assess effect of prepubertal average daily gain of Holstein heifers on first-lactation production.
Decreased mammary development has been observed as prepubertal average daily gain (ADG) is increased; however, responses in first-lactation milk production to alterations in prepubertal ADG have beenExpand
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Immune responses in lactating Holstein cows supplemented with Cu, Mn, and Zn as sulfates or methionine hydroxy analogue chelates.
The aim of this study was to compare effects of inorganic sulfate versus chelated forms of supplemental Cu, Mn, and Zn on milk production, plasma and milk mineral concentrations, neutrophil activity,Expand
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  • Open Access
The effects of controlled feeding of a high-forage or high-concentrate ration on heifer growth and first-lactation milk production.
The objective of this experiment was to evaluate growth and first-lactation milk production in dairy heifers fed a high-forage (HF) or high-concentrate (HC) ration for similar levels of average dailyExpand
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Meta-analysis of lactation performance in dairy cows receiving supplemental dietary methionine sources or postruminal infusion of methionine.
The objectives of our study were to evaluate the productive response to methionine supplementation in lactating dairy cows and to define a relationship between metabolizable Met (MP Met) intake andExpand
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Nutrient utilization of differing forage-to-concentrate ratios by growing Holstein heifers.
Traditionally, high-forage, low-concentrate diets fed ad libitum have been the primary system of feeding dairy heifers. However, high-concentrate diets can be fed at restricted intakes to reachExpand
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Effect of feed sorting on chewing behavior, production, and rumen fermentation in lactating dairy cows.
Ration sorting is thought to allow cows to eat different rations throughout the day, causing fluctuations in rumen fermentation patterns that can be detrimental to production and possibly animalExpand
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Digestion and nitrogen utilization in dairy heifers limit-fed a low or high forage ration at four levels of nitrogen intake.
The hypothesis of this experiment is that a low-forage (LF) ration will be utilized with greater efficiency than a high-forage ration (HF) by dairy heifers and that the response will be affected byExpand
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Effect of limit feeding high- and low-concentrate diets with Saccharomyces cerevisiae on digestibility and on dairy heifer growth and first-lactation performance.
Growth and digestibility were examined for heifers limit fed high- (HC; 60%) and low-concentrate (LC; 20%) diets with or without yeast culture (YC) addition in 2 experiments. A third experiment wasExpand
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Rumen digestion and nutritional efficiency of dairy heifers limit-fed a high forage ration to four levels of dry matter intake.
Eight rumen-cannulated Holstein dairy heifers [beginning body weight (BW) 340 (+/-5) kg and age 14.5 (+/-1) mo] were fed a high forage diet at 4 levels of intake. Diets were composed of grass silage,Expand
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Effect of 2-hydroxy-4-methylthio-butanoic acid on ruminal fermentation, bacterial distribution, digestibility, and performance of lactating dairy cows.
The objective of this experiment was to test the effect of a Met analog, 2-hydroxy-4-methylthio-butanoic acid (HMTBa), on ruminal fermentation and microbial protein synthesis, nutrient digestibility,Expand
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