The Oxidative and Color Stability of Beef from Steers Fed Pasture or Concentrate during Retail Display.

Beef production in Uruguay is based on pasture (~85%) or concentrate (~15%), resulting in differences in meat quality. The objective of this study was to compare the oxidative stability and color of beef from these two systems during refrigerated retail display. For these purposes, the muscle was removed from ten Aberdeen Angus steers raised and fed on pasture (130 days prior to slaughter) and from another ten steers fed concentrate (100 days prior to slaughter), sliced.

Effect of beef long-storage under different temperatures and vacuum-packaging conditions on meat quality, oxidation processes and microbial growth.

Background: The global beef market demands the meat industry to ensure product quality and safety in markets that are often very distant. The present study aimed to evaluate the effects of chilled (CH, 120 d) and chilled-then-frozen (CHF, 28 d + 92 d) storage conditions of beef vacuum packaged (VP) and vacuum packaged with antimicrobial (VPAM) on meat quality, oxidative status and microbial loads. Treatments resulted from the combination of storage condition and packaging type: VP + CH, VP + CHF, VPAM + CH and VPAM + CHF.

Minimally invasive ossiculoplasty via an endoscopic transtympanic approach.

Introduction: The aim of this study was to evaluate the feasibility of ossiculoplasty via a minimally invasive endoscopic transtympanic approach (ETTA).

Case Series: We investigated the exposure of target structures (incus and stapes) on 4 human temporal bones by placing an endoscope into the middle ear cleft through the 4 tympanic quadrants. Then, on 3 additional specimens, we performed an incudostapedial disjunction and repaired it with a drop of hydroxyapatite cement via ETTA.

Microbiological Changes during Long-Storage of Beef Meat under Different Temperature and Vacuum-Packaging Conditions.

We evaluated a combination of two temperatures and two packaging materials for long-term storage of vacuum-packaged (VP) beef striploins. Microbial populations and microbiome composition were monitored during refrigerated storage (120 days between 0-1.5 °C) and refrigerated-then-frozen storage (28 days between 0-1.

Smile Management: A Discussion with the Masters.

Smile design is an ongoing challenge in both dentistry and facial cosmetics surgery. Herein, some very common smile design scenarios are shared with six world known masters. Each case will be reviewed by 2 cosmetic dentists, 2 periodontists, and 2 oral and maxillofacial surgeons.

Frequency Fitting Optimization Using Evolutionary Algorithm in Cochlear Implant Users with Bimodal Binaural Hearing.

Unlabelled: Optimizing hearing in patients with a unilateral cochlear implant (CI) and contralateral acoustic hearing is a challenge. Evolutionary algorithms (EA) can explore a large set of potential solutions in a stochastic manner to approach the optimum of a minimization problem. The objective of this study was to develop and evaluate an EA-based protocol to modify the default frequency settings of a MAP (fMAP) of the CI in patients with bimodal hearing.

Periodontal, Functional, and Esthetic Integration of Peri-Implant Soft Tissue: WHS Concept.

The long-term functional success of implant treatment depends on the stability of the crestal bone around the implant platform. The esthetic result is achieved by adequate quality and quantity of soft tissue in the peri-implant area. The soft tissue creates the buffer area that ensures the mechanical and biological protection of the underlying bone.

Anterior Maxillary Growth in Implantology: Complications, Management, and Prevention.

Osseointegrated implantology initially concerned fully edentulous patients, then in time involved partially edentulous patients, and finally, has developed to include patients with single teeth missing on healed ridges and immediate implant placement after extraction. Thus, it was within a normal range of evidence to place implants in adolescents with congenital agenesis or prone to accidents or young adults under 30 after failure of a conservative dental treatment. However, over time the dental profession came to realize that this treatment modality was vulnerable to complications induced by maxillary/mandibular anterior growth with these patients.

Gestational nutrient restriction under extensive grazing conditions: Effects on muscle characteristics and meat quality in heavy lambs.

We evaluated maternal undernutrition effects induced by a lower natural pasture allowance (gestation days 30-143) on histological-biochemical and meat traits in muscles Semitendinosus, cranial Gluteobiceps and Supraspinatus from 200-day old male and female lambs. Maternal undernutrition increased oxidative and reduced glycolytic fibers in all muscles (P ≤ 0.01).

Se and I status in pregnant ewes from a pastoral system and the effect of supplementation with Se and I or only Se on wool quality of lambs.

Australian Merino ewes and lambs producing fine fibre wool for export are raised in the north-west of Uruguay in pasture-based systems. We studied the status of selenium and iodine in pregnant Merino ewes (10 per treatment) grazing in natural pasture, in natural pasture and supplemented with Se (0.1 mg Se/kg dry matter intake) and I (1 mg I/kg dry matter intake), or in natural pasture and supplemented with Se alone (0.

A review of productive parameters, nutritive value and technological characteristics of farmed nutria meat (Myocastor coypus).

The nutria (Myocastor coypus) is a prolific herbivorous rodent originating from southern South America. The nutria is farmed in many countries mainly for its pelt through selected animals called nutria "mutations", with different kinds of fur color and, up until now, nutria meat has been considered as a by-product. However, taking into account the growing interest of consumers to access novel and exotic meat, nutria meat could be proposed as an attractive and nutritional delicacy.

Glucose Content and In Vitro Bioaccessibility in Sweet Potato and Winter Squash Varieties during Storage.

Glucose content and in vitro bioaccessibility were determined in raw and cooked pulp of Arapey, Cuabé, and Beauregard sweet potato varieties, as well as Maravilla del Mercado and Atlas winter squash, after zero, two, four, and six months of storage (14 °C, 80% relative humidity (RH)). The total glucose content in 100 g of raw pulp was, for Arapey, 17.7 g; Beauregard, 13.

A Note on Fatty Acids Profile of Meat from Broiler Chickens Supplemented with Inorganic or Organic Selenium.

This investigation evaluated, in broiler chickens and muscles, the effect of the dietary supplementation with sodium selenite (0.3 ppm) versus selenomethionine (0.3 ppm), on the fatty acids composition, lipids indices, and enzymes indexes for desaturase, elongase, and thioesterase.

In vitro bioaccessibility of β-carotene, Ca, Mg and Zn in landrace carrots (Daucus carota, L.).

Four landrace carrots ("Becaria", "CRS", "González" and "Rodríguez") and two marketable cultivars (Kuroda and Brasilia), raw and steamed, were characterised by the total content of β-carotene Ca, Mg and Zn, in vitro bioaccessibility and by colour and were evaluated to determine the effect of particle size in nutrient bioaccessibility. Steaming increased the content of β-carotene extracted from "CRS" and Brasilia (29% and 75%) and decreased the content of β-carotene extracted from "CRS" by 23% in "Rodríguez." In addition, steaming caused a loss of Ca (21%) but did not change the amount of Mg and Zn.

An overview of the nutritional value of beef and lamb meat from South America.

The southern region of South America, a subtropical and temperate zone, is an important region for the production of beef and lamb meat, which is mainly produced in extensive pasture-based systems. Because of its content in highly valuable nutrients such as iron, zinc, selenium, fatty acids, and vitamins, meat is a unique and necessary food for the human diet in order to secure a long and healthy life, without nutritional deficiencies. Beef and lamb production systems based on temperate or tropical grasslands show interesting and, in some cases, a differential content in minerals, fatty acids and vitamins.

Bioaccessibility of Se, Cu, Zn, Mn and Fe, and heme iron content in unaged and aged meat of Hereford and Braford steers fed pasture.

The content and the bioaccessibility of Se, Cu, Zn, Mn, and Fe were determined in unaged and aged meat (14days) from the Psoas major (PM), Gluteus medius (GM) and Longissimus dorsi (LD) muscles of Hereford (H) and Braford breed (B) steers fed pasture. Furthermore, the content of heme-Fe was determined in the same muscles. The H had a lower content of Cu and a higher content of Fe.

Oxidative status, in vitro iron-induced lipid oxidation and superoxide dismutase, catalase and glutathione peroxidase activities in rhea meat.

Rhea (Rhea americana) muscles Obturatorius medialis (OM) Iliotibialis lateralis (IL) and Iliofibularis (I), obtained from farmed animals, were evaluated regarding their oxidative/antioxidant status. The mean level of thiobarbituric acid reactive substances (TBARS) expressed as malonaldehyde (MDA) content was of 0.84 mg MDA/kg wet tissue for the three muscles.

Selenium, copper, zinc, iron and manganese content of seven meat cuts from Hereford and Braford steers fed pasture in Uruguay.

Tenderloin (T), eye of rump (E), striploin (S), eye round (ER), tri-tip (TT), rib-eye roll (RR) and three rib plate-flank on (RP) meat cuts were evaluated. Selenium contents ranged between 0.42 and 1.

Minerals, haem and non-haem iron contents of rhea meat.

Mineral contents, haem and non-haem iron of rhea (Rhea americana) muscles Obturatorius medialis (OM), Iliotibialis lateralis (IL) and Iliofibularis (I) were determined. No differences between the three muscles were observed for calcium, phosphorus, magnesium and sodium. There is more potassium, zinc and copper in IL muscle than in OM and I muscles.

Hypophagic and dipsogenic effect of the 5-HT1A receptor agonist 8-OH-DPAT in broiler chickens.

The effects of the 5-HT(1A) receptor agonist 8-OH-DPAT on food and water intake in male broiler chickens were investigated. The injection of 25 or 50 microg/kg of 8-OH-DPAT 15 min before refeeding in fasted animals produced a decrease in food intake. No effect was observed in drinking.

A review of the nutritional content and technological parameters of indigenous sources of meat in South America.

Meat yields, proximate compositions, fatty acids compositions and technological parameters are reviewed for species which might be further developed as indigenous sources of meat in South America. These include the alpaca (Lama pacos), capybara (Hydrochoerus hydrochaeris), guanaco (Lama guanicoe), llama (Lama glama), nutria (Myocastor coypus), collared peccary (Tayassu tajacu), greater rhea (Rhea americana), lesser rhea (Rhea pennata), yacare (Caiman crocodilus yacare), tegu lizard (Tupinambis merianae) and green iguana (Iguana iguana).

Root coverage with Emdogain/AlloDerm: a new way to treat gingival recessions.

The recession of the gingival margin is becoming a more prominent condition in the oral situation of many patients and should be treated at its earliest detection. The multifactorial etiology, decision modality, and current trends in the treatment of gingival recession are discussed in this article. The surgical technique of choice depends on several factors, but among the different surgical protocols available, the clinician should select one that will minimize surgical trauma and achieve predictable esthetic results.

Growth, yield of carcass and biochemical composition of meat and fat in nutria (Myocastor coypus) reared in an intensive production system.

Growth, carcass yield and proximate composition were determined in intensively reared nutria (Myocastor coypus) fed different levels of protein. Growth, food intake and food utilization efficiency were not significantly affected, within the same sex, in animals receiving 16%, 19% or 22% of protein in the diet. Males consumed the same amount of food as females but had greater live and carcass weights at slaughter age than females.