DHA from microalgae Schizochytrium spp. (Thraustochytriaceae) modifies the inflammatory response and gonadal lipid profile in domestic cats.

The present study aimed to evaluate the inflammatory response, oxidative status and fatty acid deposition in reproductive tissues of cats supplemented with the dried microalgae Schizochytrium spp. (Thraustochytriaceae) as a DHA source. Thirty-seven cats (males, n 21; females, n 16; 11·5 (sd 0·5) months of age) were divided by sex into five groups. Treatment diets contained algae biomass at 4·0, 8·0, 12·0 or 16·0 g/kg replacing poultry fat (n-6 source). Cats were fed the respective diet for 62 d and neutered on day 58. Blood samples were collected at the beginning of the experiment (day 1), before neutering (day 58) and 4 d after surgery (day 62) for analysis of inflammation and oxidative markers. Acute-phase protein levels were altered (P < 0·01) in the postoperative period, without any treatment effect (P > 0·05). PGE2 concentrations after surgery were reduced linearly (R2 0·8706; P = 0·002) with microalgal inclusion. Blood platelet count was reduced (P = 0·001) after the surgery regardless treatment, but it was higher in the DHA group compared with control (P < 0·001). The DHA deposition (testicles, R2 0·846; ovaries, R2 0·869) and the n-6:n-3 ratio (testicles, R2 0·859; ovaries, R2 0·955) in gonads had a pattern which fitted a quadratic model. DHA from Schizochytrium spp. modifies PGE2 response after the surgery in cats. The physiological roles of the DHA in the reproduction of cats were not investigated, but its gonadal deposition after supplementation was observed.

Modelling of sulphur amino acid requirements and nitrogen endogenous losses in kittens.

The objective of this study was to estimate the sulphur amino acid (methionine + cystine) requirements and nitrogen endogenous losses in kittens aged 150 to 240 d. Thirty-six cats were distributed in six treatments (six cats per treatment) consisting of different concentrations of methionine + cystine (M + C): T1, 6.5 g/kg; T2, 8.8 g/kg; T3, 11.3 g/kg; T4, 13.6 g/kg; T5, 16.0 g/kg; and control, 6.5 g/kg. Diets were formulated by serial dilution of T5 (a diet relatively deficient in M + C but containing high protein concentrations) with a minimal nitrogen diet (MND). Thus, crude protein and amino acid concentrations in diets T1-T5 decreased by the same factor. The control diet was the T1 diet supplemented with adequate concentrations of M + C (6.5 g/kg; 8.8 g/kg; 11.3 g/kg; 13.6 g/kg and 16.0 g/kg). All diets were based on ingredients commonly used in extruded cat diets. Digestibility assays were performed for the determination of nitrogen balance. Nitrogen intake (NI) and nitrogen excretion (NEX) results data were fitted with an exponential equation to estimate nitrogen maintenance requirement (NMR), theoretical maximum for daily nitrogen retention (NRmaxT), and protein quality (b). M + C requirements were calculated from the limiting amino acid intake (LAAI) equation assuming a nitrogen retention of 45 to 65% NRmaxT. The NMR of kittens aged 150, 195, and 240 d was estimated at 595, 559, and 455 mg/kg body weight (BW)0.67 per day, respectively, and M + C requirements were estimated at 517, 664, and 301 mg/kg BW0.67 per day, respectively.

Estabilização da microcirculação após procedimento cirurgico em animal com peritonite / Stabilization microcirculation after surgical procediment in animal with peritonitis

A peritonite séptica é quando ocorre inflamação da cavidade peritoneal associado a um micro-organismo (D, AVILA, 2012). A detecção e correção da hipóxia tecidual são fundamentais para pacientes doentes, sendo o lactato de grande importância para a avaliação da microcirculação nesses pacientes (RENIKER et al., 2006). O objetivo desse trabalho é descrever um caso de um animal com peritonite séptica secundária a ruptura uterina por piometra e correção do valor microcirculatório após realização do procedimento cirúrgico.

Terapia multimodal para estabilização da pressão arterial em cão após hemorragia aguda / Multimodal therapy for stabilization the blood pressure in dog after acute hemorrhage

O choque pode ser definido como falência circulatória, que resulta em má perfusão tecidual. A forma mais frequente de apresentação clínica do choque é o hipovolêmico secundário à hemorragia, sendo o trauma sua principal causa (HIRANO et al., 2005). A pressão sistólica abaixo de 100 mmHg afeta vários órgãos, como os rins e intestino, levando a hipóxia tecidual (RODRIGUES et al., 1991). Esse trabalho relata a associação de colóide, solução cristalóide e solução hipertônica 7,5% para estabilização da pressão arterial após hemorragia catastrófica em cão.

Importância da monitorização da pressão arterial em animal com trauma crânio encefálico – relato de caso / Importance of monitoring blood pressure with head trauma – case report

A pressão intracraniana (PIC) determina a perfusão encefálica, pois a pressão de perfusão encefálica (PPE) é resultante do gradiente entre a pressão arterial média (PAM) e a PIC. Além disso, o fluxo sanguíneo encefálico é constante dentro de determinados valores (pressão média entre 50 e 150 mmHg), pois está sob controle do fenômeno de auto regulação vascular do encéfalo (GRAY & ROSNER, 1987). O objetivo desse trabalho é descrever um caso de um animal com trauma crânio encefálico e mostrar a importância da monitorização da pressão arterial.