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Article published the June 9, 2017
Introduction The liver performs essential functions in mammals. These include, but are not limited to, gluconeogenesis and glycogen synthesis, synthesis of several plasma proteins encompassing clotting factors and acute phase proteins (APP) (e.g., haptoglobin, albumin, and fibrinogen), metabolism of amino acids and lipids, and detoxification including ammonia removal [1,2]. During the period aro ...
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Article published the April 12, 2017
INTRODUCTION An adequate supply of macro and micronutrients, such as trace minerals (e.g., Zn, Mn, Cu, Co), is important for ensuring an optimal transition from pregnancy to lactation (Andrieu, 2008). For instance, trace minerals have critical roles in a variety of physiological process, particularly antioxidant defense, and a deficiency may depress immunity especially in peripartal or transitio ...
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Article published the February 24, 2017
Background Cows around calving time experience a depression on immune function partially due to the marked negative energy balance (NEB), which results when cows cannot ingest enough nutrients to support dietary requirements for milk production. During this time, methionine (Met) as one of the first limiting AA in dairy cows may be in limited supply. Research has demonstrated that Met plays a key ...
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Article published the December 16, 2016
INTRODUCTION Trace mineral elements such as Cu, Cr, and Zn have important roles in the health and immunity of peripartal dairy cows (Spears and Weiss, 2008). Minerals have been commonly supplemented to cattle in the form of inorganic salts, preferably as sulfates; however, the development of organic forms of trace minerals, such as minerals complexed with AA, minimize the risk of mineral antagoni ...
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Article published the November 25, 2016
Background Previous research has underscored that provision of adequate levels of essential AA (EAA) is critical for improving N utilization efficiency as well as maximizing bovine milk protein synthesis [1]. Rulquin et al. [2] proposed “ideal” values for intestinal absorption of EAA in dairy cows; however, after absorption, AA flow first to the liver where substantial and differenti ...
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Article published the October 28, 2016
Introduction Lameness is one of the most important welfare issues of high-producing dairy cows in North America [1]. The latter has been attributed to management and environmental factors [2] as well as physiologic adaptations such as postpartal negative energy balance, which can lead cows to excessive loss of body condition (BCS) [3]. Postpartal negative energy balance can be exacerbated by pre ...
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Article published the October 7, 2016
Introduction The transition period is the most-critical phase in the productive life of high-producing dairy cows and it is characterized by decreased liver function and increased inflammation and oxidative stress [1, 2]. Although inflammatory pathways play important roles in normal immune function helping the body adjust to and overcome infection with the purpose of restoring homeostasis, uncon ...
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Article published the October 28, 2014
The importance of methionine as one of the most-limiting amino acids for milk protein synthesis in dairy cows is well-established. Positive effects of peripartal supplementation of methionine (-21 days through +30 days around parturition) also have been observed in terms of milk production. Recent work has revealed that the benefits of rumen-protected methionine (RPM) during the transition period ...
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This member gave a presentation on October 21, 2014
At the following event:
2nd Joint Meeting ASAS-AAPA 2014
Article published the July 25, 2014
Introduction The advent of molecular tools and species-specific reagents over the last two decades has substantially advanced the knowledge of the molecular responses to nutrients in tissues of ruminant animals. Several comprehensive reviews on the topic of lipid regulation of gene expression in ruminants exist [1-3]. The emphasis of the current work was to provide a concise review of the most-re ...
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Information
Dr. Loor´s Research Interests are Systems biology; molecular nutrition; genomics; metabolomics; bioinformatics; nutritional programming of adipose tissue; mammary gland development; lipid metabolism; conjugated linoleic acids (CLA); nutritional and physiological genomics; comparative genomics; regulation of milk fat and protein synthesis; nutritional regulation of muscle development. His research program focuses on the study of how nutrition, physiological state and their interaction affect tissue function and metabolic adaptations through alterations in the transcriptome...
Location:Urbana, Illinois, Estados Unidos de América
Profile: Academic / scientific
Occupation: Associate Professor
Participations in events:
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