Avaliação de diferentes híbridos suínos submetidos à insensibilização elétrica e gasosa (CO 2). Parte 1 - Mensuração de indicadores sanguíneos de estresse

Pigs of three genetics lineages A, B and C marketed in Brazil, with alive weight from 100 to 120 kg were submitted to the manual electric stunning (Karl Schermer 220-230/250 volts, 45-60 Hz and 1.4 -1.5 A) and to the collective gaseous system (COMBI-BUTINA 90% CO 2). Blood samples, for levels determination of creatine phosphokinase (CPK), lactate and cortisol, as well as samples of the semimembranosus muscle (10 g) for the determination of the gene halothane, were collected. Being compared the electric and gaseous stunning systems, the electric stunning did demonstrate to be more stressful providing larger plasmatic concentrations of cortisol (p ≤ 0.001) and lactate (p ≤ 0.001) for the genetic lineages A and C, in the studied conditions. However it didn't observe significant differences beween the sanguine indicators and stunning systems in subject when the lineage B was considered. Significant differences among the genetic lineages A, B and C were obtained being compared the plasmatic values of creatine phosphokinase (p ≤ 0.001), lactate (p ≤ 0.001) and cortisol (p ≤ 0.001) when stunned with the gaseous system, however when the electric system was used only the cortisol values presented significant differences (p ≤ 0.001). The presence of the gene halothane (Nn) was only observed in the lineage B.

Uso de probiótico em dietas de suínos: Incidência de diarréia, desempenho zootécnico e digestibilidade de rações

Two trials were conducted aiming to of evaluate the effect of probiotic supplementation in pig's diet: Trial 1: diarrhea incidence and performance; Trial 2: feed intake and digestibility. In the Trial 1, forty weaning barrow piglets were distributed in four treatments: T0-basal diet; T100-basal diet +100ppm of probiotic; T200-basal diet +200ppm e T300-basal diet +300ppm. The trial 2 was a digestibility trial, where eight barrow pigs were used, distributed in two treatments: T1-basal diet and T2-basal diet + 200 ppm of same probiotic used in the Experiment 1. In the Period 1 the animals of T0 and T100 groups showed higher diarrhea incidence (P<0.05) than the T200 and T300 groups. The performance of animals of T100 group were lower than other treatment groups (P<0.05). In the Period 2 the T200 and T300 animals, showed better FG ratio than the animals of T0 (P<0.05). In the total period it was not observed significative difference concerning performance, except for DFI. In the trial 2, the animals of treatment T2, showed an increase of feed intake when compared with animals of T1. Digestibility coefficients showed no significative differences among treatments. It was concluded that the addition of 200 and 300 ppm of probiotic in the Period 1 reduces incidences of diarrhea. But, in the total period of trial 1, the performance was similar among treatments. In the trial 2 it was observed better adaptation of animals receiving probiotics which was represented by higher feed intake.

O uso da silagem de subprodutos da filetagem de peixe na alimentação de suínos em crescimento - parâmetros séricos

The study was carried out to evaluate the inclusion of increasing levels (0, 3,0 and 6.0%) of fish silage (SSFP), in the ration. The parameters studied were urea, uric acid, total protein, triglycerides, total cholesterol and lipoproteins (LDL, HDL and VLDL). Eighteen female piglets Moura weighting and crossbred Duroc x Moura, were used with 24,0± 3,0 kg in average weight and 90 days of age and eighteen male pigs Moura and crossbred Duroc x Moura, with 31,5±5,0 kg in average weight and 70 days of age in a randomized design with 3 treatments. The results showed no effect to the addition up to 6,0% of SSPF in the swine diet neither for in growth, nor to the serum parameters, even if had been found alteratum on the urea plasmatic concentrations experiments. All the parameters was closed to the normal value recommended in the literature.

Temperatura ambiente e concentrações séricas de cortisol em suínos em crescimento-terminação

Thirty-six castrated males and females Landrace x Large-White pigs (74 to 149 days of age) were randomly allotted to two environmental conditions: high temperature in a climatic chamber (HT; 22.2 to 32.8 °C) and comfort temperature in a conventional shed (CT; 17.6 to 26.6 °C), with night-and-day variations. Blood samples were weekly collected from animals of both HT and CT conditions for determination of serum cortisol levels. Cortisol levels of both sexes were not different, and there was no interaction with environmental temperature. Pigs of HT showed significantly higher average cortisol level (P<0.01) than the CT ones (7.06 and 4.82 mg/dL, respectively). Increasing in serum cortisol was continuous and linear (P<0.05) during the experimental period, suggesting the cortisol as a possible indicator of the heat stress in growing-finishing pigs.

Efeito das condições pré-abate sobre a qualidade da carne de suínos pesados

The objective of this study was to evaluate pig fasting time at the farm (FT= 9, 12, 15 or 18 hours) and pig position into the pig lorry compartment on pork quality through liquid drip loss (DLL), pH1 evaluated at 45 minutes post slaughter and pHu evaluated 24 hours post slaughter. One hundred ninety two females, weighing 133±11 kg, from two farms were used. Pig locations were evaluated on truck compartment considering front, middle and rear (TCL) position and top or botton decks (LUD). The following effects were considered in the statistical model: block (BL= farm), FT, TCL, LUD and the interaction between BL and FT. The FT affected significantly the pH1 of Longissimus dorsi (LD) muscle, and pHu of Semispinalis capitis (SC), Longissimus dorsi (LD) and Semimembranosus (SM) muscles. Fasting time at farm equal or shorter than 12 hours resulted in carcasses with lower pHu values at LD and SM muscles and fasting time above 15 hours resulted in higher pHu on SC. There were no observed effect (p>0.05) of the evaluated sources of variation on DLL. TCL affected pH1 of SC, LD and SM muscles, and pHu of LD and SM muscles. Pigs located in middle or rear position in the lorry had no difference in pH1 of the evaluated muscles. But pigs located in the middle position of the lorry had greater values of pHu on LD and SM. It is stated that pigs fasting time at farm need to be close to 15 hours in aim of obtain higher frequency of pHu values in the normal range (5.55

Diferentes níveis de betaína sobre incidência de diarreia, desempenho, características de carcaça e parâmetros sanguíneos de suínos

Thirty six piglets weaned at 19 days of age were useddistributed in a randomized block design, were used to evaluate the effects of the addition of crescent levels of betaine (0,0%, 0,1%, 0,2% e 0,3%) in the diets on the performance in initial, growing and finishing phases. The indexes of diarrhea incidence were monitored in the first 14 days post-weaning; and the blood parameters at 20, 75, and 150 days of age, as well as the carcass characteristics at the end of the experiment. It was not observed (P > 0,05) effect of the betaine on the diarrhea incidence. Significative differences (P < 0.05) were verified among treatments in the finishing phase for daily weight gain and feed conversion. Differences (P < 0.0001) among the days to the blood parameters analysed were also observed. In regard to the backfat thickness, it was verified significative difference (P < 0.05) among the treatments.

Farelo de algodão em rações para suínos nas fases de crescimento e terminação

Forty-eight pigs with 63 day olds and average weight of 23.40±1.3 kg, were allotted in a randomized block design with three treatments(0%, 10% and 20% of cottonseed meal (FA) in diets) and eight replicates with two pigs (one barrow and one gilt). The blocks were used to control changes in initial body weight. Experimental period was the growth phase (63 to 106 days old) and growing-finishing (63 to 147 days old). In each phase the diets were isonutritives, varying however the levels of crude fiber. The levels of cottonseed meal (FA) did not affect (p>0.05) the performance of animals during the growth phase or during the total period of evaluation (growingfinishing). The qualitative parameters of manure indicated that the FA determined decrease in the nitrogen and phosphorus content, but only in the growth phase. In the finishing phase the increase in the FA inclusion promoted an increase in dry matter content. Although FA can be used in up to 20% in diets for pigs in the growing and finishing phase, it is necessary to include L-lysine and soybean oil which causes an increase in cost per kg produced pig.

Perfil de resistência a antimicrobianos de Staphylococcus aureus isolados de granjas e frigoríficos de suínos

Staphylococcus aureus are involved in a wide range of clinical problems to swine industry as son in humans. Epidemiological researchs prove his potential to acquire resistantence to antibiotics. Nowadays, methicillin-resistant S. aureus (MRSA) are responsabilized for nosocomial infections and many studies are done because MRSA are spread to extra hospitalar enrivonment and frequentely isolated from domestic animals including pigs. The aim of this study was to determine the presence o S. aureus at swine farms and identify the mecA, icaA and icaD genes and the resistant proflife to antibiotics. Overal, 458 swabs were taked from five pigeris and two slautherhouses. All the samples were placed on Braid - Parker and blood agar follow by biochemical analyses. The suspect colonies were submitted to PCR to confirm the S. aureus species, by the detection of the coa gene, mecA to avaible meticillin-resistant as son to the virulence gens icaA and icaD that can determine slime production. Antibiogram were done to evaluate the response to 11 antibiotics. All pigeris and slautherhouse were positive and 81 (79%) samples were S. aureus positive including four isolates from pigs employeers. The mecA gene was not detected. The icaD gene was most frequent and 41% were positive to both genes. The antibiogram show a lot of samples penicillin and tetraciclin resistant. Most of the samples were multirestant.

Análise dos processos de decomposição e sucessão ecológica em carcaças de suínos (Sus scrofa L.) mortos por disparo de arma de fogo e overdose de cocaína e protocolo de procedimento diante de corpo de delito

Pós-graduação em Biologia Geral e Aplicada - IBB

Avaliação do uso de inóculos na biodigestão anaeróbia de resíduos de aves de postura, frangos de corte e suínos

Pós-graduação em Biotecnologia - IQ

Análise do sistema respiratório dos suínos por radiografia, broncoscopia e toracoscopia

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Anestesia de suínos com azaperona, midazolam e propofol em associação ao tramadol ou não

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Ambiente controlado e não controlado no desempenho, comportamento e características de carcaça de suínos

Pós-graduação em Zootecnia - FCAV

Estudo em suínos sobre osteotomia com brocas de alta e baixa rotação e refrigeração líquida: análise radiográfica digital densitométrica em tecido ósseo alveolar

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo radiográfico digital e densitométrico em mandíbulas de suínos, submetidas a osteotomia com brocas de alta e baixa rotação, com refrigeração líquida

Pós-graduação em Odontologia - FOA