Full Text Journal Articles by
Author A Melgar

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Lactational performance, rumen fermentation, and enteric methane emission of dairy cows fed an amylase-enabled corn silage.

S F Cueva, H Stefenoni, A Melgar, S E Räisänen, C F A Lage, D E Wasson, M E Fetter, A M Pelaez, G W Roth, A N Hristov,

This study investigated the effects of an amylase-enabled corn silage on lactational performance, enteric CH<sub>4</sub> emission, and rumen fermentation of lactating dairy cows. Following a 2-wk covariate period, 48 Holstein cows were blocked based on parity, days in milk, milk yield (MY), and CH<sub>4</sub> emission. Cows were randomly assigned to ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, :]

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Histidine dose-response effects on lactational performance and plasma amino acid concentrations in lactating dairy cows: 2. Metabolizable protein-deficient diet.

S E Räisänen, C F A Lage, M E Fetter, A Melgar, A M Pelaez, H A Stefenoni, D E Wasson, S F Cueva, X Zhu, M Miura, A N Hristov,

The objective of this experiment was to determine the effect of increasing digestible His (dHis) levels with a rumen-protected (RP) His product on milk production, milk composition, and plasma AA concentrations in lactating dairy cows fed a metabolizable protein (MP)-deficient diet, according to the National Research Council dairy model from ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, :]

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Temporal changes in total and metabolically active ruminal methanogens in dairy cows supplemented with 3-nitrooxypropanol.

D W Pitta, A Melgar, A N Hristov, N Indugu, K S Narayan, C Pappalardo, M L Hennessy, B Vecchiarelli, V Kaplan-Shabtai, M Kindermann, N Walker,

The purpose of this study was to investigate the effect of 3-nitrooxypropanol (3-NOP), a potent methane inhibitor, on total and metabolically active methanogens in the rumen of dairy cows over the course of the day and over a 12-wk period. Rumen contents of 8 ruminally cannulated early-lactation dairy cows were ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, 104(8):8721-8735]

Cited: 1 time

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Histidine dose-response effects on lactational performance and plasma amino acid concentrations in lactating dairy cows: 1. Metabolizable protein-adequate diet.

S E Räisänen, C F A Lage, J Oh, A Melgar, K Nedelkov, X Chen, M Miura, A N Hristov,

The objective of this experiment was to determine the effect of increasing digestible His (dHis) doses on milk production, milk composition, and plasma AA concentrations in lactating dairy cows fed diets that meet or exceed their energy and metabolizable protein (MP) requirements. In a companion paper (Räisänen et al., 2021) ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, :]

Cited: 0 times

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Genomic diversification of dehydrin gene family in vascular plants: three distinctive orthologue groups and a novel KS-dehydrin conserved protein motif.

Alejandra Melgar, Alicia Zelada,

Dehydrins (DHNs) are a family of plant proteins that play important roles on abiotic stress tolerance and seed development. They are classified into five structural subgroups: K-, SK-, YK-, YSK-, and KS-DHNs, according to the presence of conserved motifs named K-, Y- and S- segments.We carried out a comparative structural ... Read more >>

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Effects of the macroalga Asparagopsis taxiformis and oregano leaves on methane emission, rumen fermentation, and lactational performance of dairy cows.

H A Stefenoni, S E Räisänen, S F Cueva, D E Wasson, C F A Lage, A Melgar, M E Fetter, P Smith, M Hennessy, B Vecchiarelli, J Bender, D Pitta, C L Cantrell, C Yarish, A N Hristov,

Asparagopsis taxiformis (AT) is a source of multiple halogenated compounds and, in a limited number of studies, has been shown to decrease enteric CH<sub>4</sub> emission in vitro and in vivo. Similarly, oregano has been suggested as a potential CH<sub>4</sub> mitigating agent. This study consisted of 2 in vitro and 2 ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, 104(4):4157-4173]

Cited: 2 times

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Lactational performance, enteric gas emissions, and plasma amino acid profile of dairy cows fed diets with soybean or canola meals included on an equal protein basis.

C F A Lage, S E Räisänen, H Stefenoni, A Melgar, X Chen, J Oh, M E Fetter, D M Kniffen, R A Fabin, A N Hristov,

This study investigated the effects of feeding solvent-extracted canola meal (CM), extruded soybean meal (ESBM), or solvent-extracted soybean meal (SSBM) on an equivalent crude protein basis on performance, plasma AA profiles, enteric gas emissions, milk fatty acids, and nutrient digestibility in lactating dairy cows. Fifteen Holstein cows (95 ± 20 ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, 104(3):3052-3066]

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Protective effect of suppressor of cytokine signalling 1-based therapy in experimental abdominal aortic aneurysm.

Susana Bernal, Laura Lopez-Sanz, Luna Jimenez-Castilla, Ignacio Prieto, Ana Melgar, Sara La Manna, Jose Luis Martin-Ventura, Luis Miguel Blanco-Colio, Jesus Egido, Carmen Gomez-Guerrero,

<h4>Background and purpose</h4>Abdominal aortic aneurysm (AAA) is a multifactorial disease characterized by chronic inflammation, oxidative stress and proteolytic activity in the aortic wall. Targeting JAK/signal transducer and activator of transcription (JAK/STAT) pathway is a promising strategy for chronic inflammatory diseases. We investigated the vasculo-protective role of suppressor of cytokine signalling-1 ... Read more >>

Br J Pharmacol (British journal of pharmacology)
[2021, 178(3):564-581]

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Enteric methane emission, milk production, and composition of dairy cows fed 3-nitrooxypropanol.

A Melgar, C F A Lage, K Nedelkov, S E Räisänen, H Stefenoni, M E Fetter, X Chen, J Oh, S Duval, M Kindermann, N D Walker, A N Hristov,

This study examined the effect of 3-nitrooxypropanol (3-NOP), an investigational substance, on enteric methane emission, milk production, and composition in Holstein dairy cows. Following a 3-wk covariate period, 48 multi- and primiparous cows averaging (± standard deviation) 118 ± 28 d in milk, 43.4 ± 8 kg/d milk yield, and ... Read more >>

J Dairy Sci (Journal of dairy science)
[2021, 104(1):357-366]

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Bioavailability of rumen-protected methionine, lysine and histidine assessed by fecal amino acid excretion

S E Räisänen, C M M R Martins, K Nedelkov, J Oh, M T Harper, A Melgar, X Chen, C Parys, R A Patton, M Miura, A N Hristov,

The objective of this experiment was to assess a new method to determine the bioavailability (BA) of rumen-protected (RP)His, RPLys and RPMet products by determining rumen escape (RE) and fecal excretion of undigested AA from RPAA. Eight lactating Holstein cows (79 ± 21 days in milk, 53.0 ± 7.0 kg/d ... Read more >>

Anim Feed Sci Technol (Animal feed science and technology.)
[2020, 268:Not Available]

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Short communication: Short-term effect of 3-nitrooxypropanol on feed dry matter intake in lactating dairy cows.

A Melgar, K Nedelkov, C M M R Martins, K C Welter, X Chen, S E Räisänen, M T Harper, J Oh, S Duval, A N Hristov,

The objective of this study was to investigate the effect of 3-nitrooxypropanol (3-NOP), an enteric methane inhibitor under investigation, on short-term dry matter intake (DMI) in lactating dairy cows. Following a 1-wk adaptation period, 12 multiparous Holstein cows were fed a basal total mixed ration (TMR) containing increasing levels of ... Read more >>

J Dairy Sci (Journal of dairy science)
[2020, 103(12):11496-11502]

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Short communication: Relationship of dry matter intake with enteric methane emission measured with the GreenFeed system in dairy cows receiving a diet without or with 3-nitrooxypropanol.

A N Hristov, A Melgar,

The relationship between DM intake (DMI) and enteric methane emission is well established in ruminant animals but may depend on measurement technique (e.g. spot v. continuous gas sampling) and rumen environment (e.g. use of fermentation modifiers). A previous meta-analysis has shown a poor overall (i.e. 24 h) relationship of DMI ... Read more >>

Animal (Animal : an international journal of animal bioscience)
[2020, 14(S3):s484-s490]

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Results in the ESPN/ERA-EDTA Registry suggest disparities in access to kidney transplantation but little variation in graft survival of children across Europe.

Marjolein Bonthuis, Liz Cuperus, Nicholas C Chesnaye, Sema Akman, Angel Alonso Melgar, Sergey Baiko, Antonia H Bouts, Olivia Boyer, Kremena Dimitrova, Carmen do Carmo, Ryszard Grenda, James Heaf, Timo Jahnukainen, Augustina Jankauskiene, Lukas Kaltenegger, Mirjana Kostic, Stephen D Marks, Andromachi Mitsioni, Gregor Novljan, Runolfur Palsson, Paloma Parvex, Ludmila Podracka, Anna Bjerre, Tomas Seeman, Jasna Slavicek, Tamas Szabo, Burkhard Tönshoff, Diletta D Torres, Koen J Van Hoeck, Susanne Westphal Ladfors, Jérôme Harambat, Jaap W Groothoff, Kitty J Jager,

One of the main objectives of the European health policy framework is to ensure equitable access to high-quality health services across Europe. Here we examined country-specific kidney transplantation and graft failure rates in children and explore their country- and patient-level determinants. Patients under 20 years of age initiating kidney replacement ... Read more >>

Kidney Int (Kidney international)
[2020, 98(2):464-475]

Cited: 3 times

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Incorporation of the rapid HIV test in a sexually-transmitted disease clinic in Buenos Aires: Dramatic increase in the frequency of HIV diagnosis.

Nicolas Morando, María Lucía Gallo Vaulet, Asunta Melgar, Marcelo Rodríguez Fermepin, Ricardo Casco, María de Los Ángeles Pando,

Improving access to diagnosis constitutes a key step in the control of the Human immunodeficiency virus (HIV)/AIDS epidemic. Rapid testing is increasingly gaining interest as a powerful diagnostic tool to achieve this goal. The purpose of this study was to implement the rapid HIV test (RHT) in a clinical setting ... Read more >>

Rev Argent Microbiol (Revista Argentina de microbiologia)
[2020, 52(4):272-277]

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Dose-response effect of 3-nitrooxypropanol on enteric methane emissions in dairy cows.

A Melgar, K C Welter, K Nedelkov, C M M R Martins, M T Harper, J Oh, S E Räisänen, X Chen, S F Cueva, S Duval, A N Hristov,

This experiment was designed to test the effect of inclusion rate of 3-nitrooxypropanol (3-NOP), a methane inhibitor, on enteric methane emissions in dairy cows. The study was conducted with 49 multiparous Holstein cows in a randomized complete block design in 2 phases; phase 1 was with 28 cows, and phase ... Read more >>

J Dairy Sci (Journal of dairy science)
[2020, 103(7):6145-6156]

Cited: 2 times

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Staphylococcus epidermidis in feedings and feces of preterm neonates.

Laura Moles, Marta Gómez, Elena Moroder, Gerardo Bustos, Ana Melgar, Rosa Del Campo, Juan M Rodríguez,

Staphylococcus epidermidis has emerged as the leading agent causing neonatal late-onset sepsis in preterm neonates; although the severity of the episodes caused by this species is often underestimated, it might exert relevant short- and long-term detrimental effects on neonatal outcomes. In this context, the objective of this study was to ... Read more >>

PLoS One (PloS one)
[2020, 15(2):e0227823]

Cited: 1 time

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Latin American Scientific Production in Indian Journal of Pediatrics, 2010-2018.

Ronald M Hernández, Yolvi Ocaña-Fernández, Luis Alberto Nuñez Lira, Doris Fuster-Guillen, Angel Salvatierra Melgar, Pedro Felix Novoa Castillo,

Indian J Pediatr (Indian journal of pediatrics)
[2020, 87(7):560]

Cited: 0 times

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Effects of 3-nitrooxypropanol on rumen fermentation, lactational performance, and resumption of ovarian cyclicity in dairy cows.

A Melgar, M T Harper, J Oh, F Giallongo, M E Young, T L Ott, S Duval, A N Hristov,

This study examined the effect of 3-nitrooxypropanol (3-NOP), a substance under investigation, on enteric methane (CH<sub>4</sub>) emission, rumen fermentation, lactational performance, sensory properties of milk, and the resumption of ovarian cyclicity in early-lactation dairy cows. Fifty-six multi- and primiparous Holstein cows, including 8 that were rumen cannulated, were used in ... Read more >>

J Dairy Sci (Journal of dairy science)
[2020, 103(1):410-432]

Cited: 4 times

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Serratia marcescens colonization in preterm neonates during their neonatal intensive care unit stay.

Laura Moles, Marta Gómez, Elena Moroder, Esther Jiménez, Diana Escuder, Gerardo Bustos, Ana Melgar, Jeniffer Villa, Rosa Del Campo, Fernando Chaves, Juan M Rodríguez,

<h4>Background</h4>Nosocomial sepsis is the main problem that preterms have to face during their stay at neonatal intensive care units (NICU). <i>Serratia marcescens</i> is an emerging cause of preterm sepsis but its epidemiology is still largely unknown. Consequently, the aims of this study were to know the rate of preterms colonized ... Read more >>

Antimicrob Resist Infect Control (Antimicrobial resistance and infection control)
[2019, 8:135]

Cited: 1 time

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Production effects of feeding extruded soybean meal to early-lactation dairy cows.

M T Harper, J Oh, A Melgar, K Nedelkov, S Räisänen, X Chen, C M M R Martins, M Young, T L Ott, D M Kniffen, R A Fabin, A N Hristov,

The objective of this experiment was to evaluate productive and reproductive effects of replacing solvent-extracted soybean meal (SSBM) with extruded soybean meal (ESBM) in a total mixed ration for early-lactation dairy cows. Thirty-four Holstein cows (12 primiparous and 22 multiparous) were used in a randomized complete block design experiment with ... Read more >>

J Dairy Sci (Journal of dairy science)
[2019, 102(10):8999-9016]

Cited: 0 times

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Effects of Saccharomyces cerevisiae-based direct-fed microbial and exogenous enzyme products on enteric methane emission and productivity in lactating dairy cows.

J Oh, M Harper, A Melgar, D M Paulus Compart, A N Hristov,

The objective of this experiment was to investigate the effects of a Saccharomyces cerevisiae-based direct-fed microbial product (SDM) and an exogenous enzyme product (ENZ) on enteric methane emission, milk yield and composition, total-tract digestibility of nutrients, ruminal fermentation, and nitrogen excretion and secretion in lactating dairy cows. Eighteen Holstein cows ... Read more >>

J Dairy Sci (Journal of dairy science)
[2019, 102(7):6065-6075]

Cited: 3 times

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Hemodialysis vascular access and subsequent transplantation: a report from the ESPN/ERA-EDTA Registry.

Michael Boehm, Marjolein Bonthuis, Marlies Noordzij, Jérôme Harambat, Jaap W Groothoff, Ángel Alonso Melgar, Jadranka Buturovic, Ruhan Dusunsel, Marc Fila, Anna Jander, Linda Koster-Kamphuis, Gregor Novljan, Pedro J Ortega, Fabio Paglialonga, Maria T Saravo, Constantinos J Stefanidis, Christoph Aufricht, Kitty J Jager, Franz Schaefer,

<h4>Background</h4>Current guidelines advocate use of arteriovenous fistula (AVF) over central venous catheter (CVC) for children starting hemodialysis (HD). European data on current practice, determinants of access choice and switches, patient survival, and access to transplantation are limited.<h4>Methods</h4>We included incident patients from 18 European countries who started HD from 2000 to ... Read more >>

Pediatr Nephrol (Pediatric nephrology (Berlin, Germany))
[2019, 34(4):713-721]

Cited: 2 times

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Acceptance of flavored concentrate premixes by young ruminants following a short-term exposure.

K Nedelkov, M T Harper, A Melgar, X Chen, S Räisänen, C M M R Martins, J Faugeron, E H Wall, A N Hristov,

Three cafeteria feeding design experiments were conducted to test whether young ruminants have flavor preferences. Experiment 1 was with 11 Dorset × Suffolk weaned lambs of both sexes, aged 5 mo and averaging 47.5 (standard deviation = 5.8) kg of body weight. The lambs were offered a choice of 5 ... Read more >>

J Dairy Sci (Journal of dairy science)
[2019, 102(1):388-394]

Cited: 1 time

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Assessment of country policies affecting reproductive health for adolescents in the Philippines.

Junice L D Melgar, Alfredo R Melgar, Mario Philip R Festin, Andrea J Hoopes, Venkatraman Chandra-Mouli,

<h4>Background</h4>Adolescents in the Philippines face many legal, social and political barriers to access sexual and reproductive health (SRH) services, putting them at higher risk of unplanned pregnancy, abortion, sexually transmitted infections and HIV, and other health and development problems.<h4>Objective</h4>This study aims to evaluate whether current normative documents on SRH in ... Read more >>

Reprod Health (Reproductive health)
[2018, 15(1):205]

Cited: 2 times

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Upper Vault Septal Anatomy and Short Nasal Bone Syndrome: Implications for Rhinoplasty.

Arian S Mowlavi, Tiffany L Chamberlain, Astrid Melgar, Armin Talle, Sean Saadat, Soheil Sharifi-Amina, Bradon J Wilhelmi,

<b>Introduction:</b> This is a diagnostic study that investigates the clinical significance between patients with short and long nasal bones and the variation in upper septal composition that would delineate propensity for middle vault collapse. <b>Methods:</b> Computed tomographic scans of 16 female patients undergoing evaluation with sinus films were analyzed. Two ... Read more >>

Eplasty (Eplasty)
[2018, 18:e29]

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