Meat quality of lambs supplemented with intramuscular vitamin E / Qualidade da carne de cordeiros suplementados com vitamina E por via intramuscular

This study evaluated the effects of intramuscular alpha-tocopherol (vitamin E) supplementation on meat quality characteristics of Santa Inês and Dorper crossbreed lambs. All animals were feed with a high concentrated diet in feedlot. Eight days before slaughter, the animals were distributed into four blocks according to weight gain. At the seventh and fourth days before slaughter, they were intramuscularly treated with 0, 10 or 20 IU of DL-alpha-tocopherol per kg of metabolic body weight. At slaughter they had 138 days of age and 43.6 kg of live weight, in average. Carcasses were stored for 24 hours under refrigeration at 2°C. Longissimus thoracis muscle pH (pH24h) and color (lightness, yellowness and redness) were analyzed and its samples were collected for evaluation of shear force (SF), cooking loss (WLC), fatty acid composition (FA) and thiobarbituric acid reactive substances after one (TBARS1m) and after five months (TBARS5m) of freezing. Linearity deviation effect was observed for lightness (L*; P=0.0042) and yellowness (b*; P=0.0082). Intramuscular administration of 10 or 20 IU of alpha-tocopherol/kg of metabolic weight did not influence the conservation of fatty acid in the carcasses, but benefit L* and b* values.(AU)

O estudo avaliou os efeitos da suplementação pela via intramuscular de alfa-tocoferol (vitamina E) na qualidade da carne de cordeiros mestiços Santa Inês e Dorper. Os animais foram mantidos em confinamento, sendo alimentados com dieta contendo alto teor de concentrado energético. Oito dias antes do abate os cordeiros foram distribuídos em quatro blocos, de acordo com seu ganho de peso. No sétimo e quarto dias antes do abate eles foram tratados por via intramuscular com 0, 10 ou 20 UI de DL-alfa-tocoferol por kg de peso metabólico. No momento do abate os animais tinham, em média, 138 dias de idade e 43,6 kg de peso vivo. As carcaças foram armazenadas a 2°C por 24 horas. Foram determinados pH (pH24h) e cor (luminosidade, teor de vermelho e teor de amarelo) do músculo Longissimus thoracis, bem como força de cisalhamento, perda por cocção, composição dos ácidos graxos e quantidade de substâncias reativas ao ácido tiobarbitúrico após um e cinco meses de congelamento. Observou-se efeito de desvio da linearidade para luminosidade (L*; P=0.0042) e para o croma amarelo (b*; P=0.0082). A administração intramuscular de 10 e 20 UI de alfa-tocoferol/kg de peso metabólico não influenciou a conservação de ácidos graxos das carcaças, mas melhorou os valores de L* e b*.(AU)

Suplementación parenteral con cobre y zinc en bovinos Brahman en crecimiento en la región sur occidental de Venezuela / Copper and Zinc Parenteral Supplementation in Growing Brahman Cattle in the West-Southern region of Venezuela

Con el objetivo de evaluar el efecto de la suplementación parenteral con cobre y zinc sobre la ganancia de peso (GDP), incremento en medidas corporales y variables hematológicas, se utilizaron hembras (n=33) y machos (n=34) Brahman con un peso de 165 y 186 kg, respectivamente, los cuales fueron reagrupados y asignados a cuatro tipos de suplementación de ambos sexos cada uno: 1) suplementación mineral oral (SMO); 2) SMO más cobre inyectado (SMO-Cu); 3) SMO más zinc inyectado (SMOZn); y 4) SMO más cobre y zinc inyectados (SMO-Cu-Zn). El suplemento mineral oral (50 g/animal/día) contenía 500 ppm de Cu y 2.200 ppm de Zn. El Cu y Zn se suministraron por vía parenteral subcutánea al inicio del experimento, en una dosis única de 50 y 57,35 mg/100 kg de PV, respectivamente. Cada 28 días se registró el peso y se tomaron muestras de sangre, para hematocrito (Hct) y hemoglobina (Hb). Se midió la altura a la cruz (AC), altura a la grupa (AG) y perímetro torácico (PT), al inicio y al final del experimento. Este tuvo una duración de 120 días entre diciembre y abril. Los animales se manejaron bajo pastoreo rotacional en potreros de Brachiaria decumbens y B. humidicola, con una carga animal promedio de 1,22 UA/ha. La GDP no fue afectada por los tratamientos con un valor promedio global de 101,1 g/animal/día. Los grupos no inyectados con zinc tuvieron mayor incremento de AC (5,1 cm) que los restantes grupos (P<0,05). Los incrementos en AG y PT no fueron afectados por los tratamientos, con medias de 4,83 y 6,53 cm, respectivamente. Se concluye que la suplementación mineral parenteral no mejoró la GDP y los incrementos en medidas corporales, bajo las condiciones experimentales descritas, cuando los animales consumían forrajes bajos en proteína y ligeramente elevados en Fe y Mn.

In order to evaluate the effect of Copper and Zinc parenteral supplementation on average daily gain (ADG), increases in body measurements and hematological values, growing Brahman females (n = 33) and males (n = 34) were used, with body weight of 165 and 186 kg respectively, which were grouped into four sets of both sexes and assigned to four types of supplementation: 1) oral mineral supplementation (OMS), 2) OMS and copper injected (OMS-Cu), 3) OMS and zinc injected (OMS-Zn), and 4) OMS, copper and zinc injected (OMS-Cu-Zn). The oral mineral supplement (50 g/animal/day) contained 500 ppm Cu and 2,200 ppm Zn. Copper and Zn were applied by subcutaneous injection at the beginning of the experiment in a single dose of 50 and 57.35 mg/100 kg of BW, respectively. Every 28 days, body weight was recorded and blood samples were taken for hematocrit (Hct) and hemoglobin (Hb) analysis. Wither height (WH), hip height (HH) and girth chest (GC) were measured at the beginning and end of the experiment. The experiment lasted 120 days between December and April. The animals were managed under rotational grazing in pastures of Brachiaria decumbens and B. humidicola, with a stocking rate of 1.22 AU/ha. Average daily gain was not affected by treatments with an overall average value of 101.1 g/animal/day. The groups with no Zn injected had a greater increase in WH (5.1 cm) than the other groups (P<0.05). The increases in HH and GC were not affected by treatments, with averages of 4.83 and 6.53 cm, respectively. It is concluded that parenteral mineral supplementation did not improve ADG and increases in body measurements, under the experimental conditions described, when animals consume forages low in protein and slightly higher in Fe and Mn.

Regulation of ω-3 Fish Oil Emulsion on the SIRS during the Initial Stage of Severe Acute Pancreatitis / 华中科技大学学报（医学）（英德文版）

The aim of this study was to explore the effects of parenteral supplementation with ω-3 fish oil emulsion (Omegaven ) on systemic inflammatory response syndrome (SIRS) during the ini-tial stage of severe acute pancreatitis (SAP).In a prospective,randomized and controlled trial,60 pa-tients with SAP were randomized either to treat with conventional therapy (Con group,n=30) or conventional therapy plus intravenous supplementation with 0-3 fish oil emulsion 0.2 g/kg every day (FO group,n=30).The effects were analyzed by the SIRS-related indexes.The results showed that APACHE-II scores in FO group were significantly lower,and the gap increased much farther after the 4th day than those in Con group (P<0.05).Fluid equilibrium time became shorter markedly in FO group than in Con group (5.1±9.2 days vs 8.4±2.3 days).In FO group,SIRS scores were markedly duced,while IL-10 decreased markedly,most prominently between the 4th and 7th day,and the ratio euteral supplementation with ω-3 fish oil emulsion could efficiently lower the magnitude and persis-tence time of the SIRS,markedly retrieve the unbalance of the pro-/anti-inflammatory cytokines,im-prove severe condition of illness and may provide a new way to regulate the SIRS.