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Search Results: 1 - 10 of 405568 matches for " M. Alonso-Spilsbury "
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A case of iatrogenic myositis in piglest
Archivos de medicina veterinaria , 2003, DOI: 10.4067/S0301-732X2003000100013
Abstract: a case of infectious myositis due to yatrogenia was observed in weaning piglets. six piglets from four litters were affected showing unilateral and bilateral hind limb, knuckling of the metatarsalphalangeal joint, inability to move, dog sitting position, and hyperflexion of the posterior digits.necropsy findings showed: osteochondrosis, osteomyelitis, bubos increased more than 30 times the normal size and, abscesses between phalanges. other conditions seen were: iron spots in semitendinous and semimembranous muscles, aqueous blood, paleness and splenomegaly. it was concluded that the skeletal disorders and the lameness with buboalgia seen in these pigs were caused by inadequate iron injections performed by unskilled workers at the farm
Miositis iatrogénica en cerditos A case of iatrogenic myositis in piglest
Archivos de medicina veterinaria , 2003,
Abstract: Se observó un caso de miositis infecciosa debido a iatrogenia en lechones destetados. Seis lechones de cuatro camadas mostraron cojera uni y bilateral de los miembros traseros, inhabilidad para moverse, posición de perro sentado e hiperflexión de los miembros posteriores. Las lesiones encontradas a la necropsia fueron: osteocondrosis, osteomielitis, nódulos linfáticos inguinales aumentados 30 veces su tama o normal y abscesos entre las falanges. Otros hallazgos fueron presencia de manchas de hierro en músculos semitendinoso y semimembranoso, sangre acuosa, palidez de la canal y esplenomegalia. Se concluyó que los desórdenes esqueléticos y la cojera junto con la bubonalgia observados en estos lechones se debieron a inyecciones de hierro realizadas en forma séptica e inadecuada por operarios de la granja A case of infectious myositis due to yatrogenia was observed in weaning piglets. Six piglets from four litters were affected showing unilateral and bilateral hind limb, knuckling of the metatarsalphalangeal joint, inability to move, dog sitting position, and hyperflexion of the posterior digits.Necropsy findings showed: osteochondrosis, osteomyelitis, bubos increased more than 30 times the normal size and, abscesses between phalanges. Other conditions seen were: iron spots in semitendinous and semimembranous muscles, aqueous blood, paleness and splenomegaly. It was concluded that the skeletal disorders and the lameness with buboalgia seen in these pigs were caused by inadequate iron injections performed by unskilled workers at the farm
Social and Sexual Behavior of Two Newly Formed Pairs of Mexican Gray Wolf in Captivity
M. Alonso-Spilsbury,I. Escobar-Ibarra,L. Mayagoitia,R. Ramirez-Necoechea
International Journal of Zoological Research , 2006,
Abstract: The social and maintenance behaviors of two pairs of Mexican gray wolf in captivity were studied. Wolves belonged to Zacango (ZZ) and Leon Zoo (LZ). For the ZZ pair significant differences were observed (p<0.01) for the social behaviors, whereas no differences were found for neutral or affiliative behaviors. The LZ pair showed no differences in social behavior before the breeding season, but after this significant differences were observed for playing and sexual activity (p<0.001). Wolves showed a preference (p<0.0001) to perform their activities on a reduced place far away from the human transit, especially those related with the courtship behavior. For the ZZ pair a total number of 389 mounting observations were registered during 11 consecutive days, most of them with pelvic movements but only two culminating with copulation (0.6%). The LZ pair showed a reproductive activity of 180 mountings, three of them culminating with copula (1.6%); none of the pairs showed reproductive success. Reproductive success depends on both physiological and behavioral compatibility, but some other causes may be involved in the reproductive failure of the ZZ pair, among them the stress of restraining for the cytology studies and the housing conditions like the presence of large predators as closer neighbors to the wolves.
Feeding Kitchen Leftovers to Fattening Pigs Effects on Health and Production Performance
D. Mota-Rojas,M. R. Becerril-Herrera,H. J. Herrera,C. Noriega,M. Alonso-Spilsbury
Journal of Food Technology , 2013,
Abstract: The use of kitchen leftovers as a feeding source in pigs has quality limitations as well as health and sanitary restrictions; nevertheless, it is still the only affordable food for some artisan pig farms. Production performance in hybrid pigs at an artisan farm in the State of Mexico, was studied. Four treatments (T1-T4) were administered to 50 hybrid pigs distributed at random as follows: T1 had 15 sows and T2, 15 castrated male pigs, both groups were fed with kitchen leftovers; T3 had 10 sows and T4, 10 castrated male pigs; these latter groups were fed with a commercial balanced feed. In order to analyse the differences between the means of the treatments a Tukey test was used. Proximal analysis showed the low nutritional quality of the leftovers. Animals fed with kitchen waste showed a higher percentage of respiratory and enteric signs that affected the muscular tissue development. Furthermore, leftovers increased feed conversion compared to the balanced diet. Treating the kitchen waste is recommended in order to diminish the pathogen incidence, and adding protein to the diet which will guarantee the fulfillment of animal nutritional needs. It is true that feeding with leftovers is cheap but it is convenient to take into account the cost involved which includes growth delay and both respiratory and digestive problems in animals.
Lactational Estrus in Sows, a Way to Increase the Number of Farrowings Per Sow Per Year
M. Alonso-Spilsbury,L. Mayagoitia,M.E. Trujillo,R. Ram?rez- Necoechea,D. Mota-Rojas
Journal of Animal and Veterinary Advances , 2012,
Abstract: During lactation the sow generally remains anestrus. However, lactational estrus and ovulation sometimes occurs under unusual circumstances. Practical outcomes of lactational estrus are reducing the interval between weaning and estrusand therefore the non-productive days in the herd. Although various techniques to induce lactational estrus have been performed through natural management of the animals or the use of exogenous hormones during lactation, induction of estrus during lactation has not been recommended for commercial use. The objective of this study was to review and analyze the basic lactating sow physiology and the different methodologies to induce lactational ovulation, in order to improve her reproductive and productive performance, as a possible alternative to the early weaning system, especially in those cases where lactation length is determined by welfare constraints.
Aplicación de somatotropina recombinante porcina en lechones durante la primera semana de vida: efecto sobre variables metabólicas y somatométricas Porcine recombinant somatotropin administered to piglets during the first week of life: effects on metabolic and somatometric variables
A Olmos-Hernández,ME Trujillo-Ortega,M Alonso-Spilsbury,M Becerril-Herrera
Archivos de medicina veterinaria , 2010,
Abstract: Con el fin de evaluar el efecto de la administración de la somatotropina recombinante porcina (rpST) en lechones, sobre las variables metabólicas y somatométricas durante la primera semana de vida, se evaluaron un total de 220 lechones al nacimiento de 40 cerdas híbridas Landrace x Large White. Los lechones fueron clasificados aleatoriamente en dos grupos. El Grupo 1 conformado por 106 lechones (Grupo testigo) y el grupo 2 por un total de 114 lechones (Grupo tratado con pST). La administración de la rpST se realizó a una dosis de 1 mg/kg cada 24 h durante siete días. En el pH al nacimiento se apreciaron diferencias significativas (P < 0,05) en ambos grupos (7,42 ± 0,47 y 7,31 ± 0,59), fenómeno que desaparece a la semana de vida. A la semana se observó un aumento significativo (P < 0,001) en los niveles de glucosa en los lechones del G2 vs. G1 (103,71 ± 18,4468, 78 ± 10,44). Al final del experimento la ganancia diaria de peso fue mayor para el grupo tratado con rpST (209,21 ± 45,97) respecto al grupo testigo (137,25 ± 31,31). Al comparar el efecto del tratamiento por sexo se observaron marcadas diferencias significativas (P < 0,001) en el pH, glucosa, lactato y peso ganado en los machos del G2 con respecto a las hembras del mismo grupo a los siete días postratamiento. Los lechones tratados con rpST presentaron diferencias significativas en las variables: perímetro abdominal (28,67 ± 4,41 y 31,79 ± 3,74 respectivamente), largo dorsal (28,42 ± 2,66 y 30,21 ± 4,70 respectivamente) y redondez del jamón (18,79 ± 2,62 y 22,38 ± 2,98 respectivamente). Investigación en proceso permitirá distinguir la masa corporal ganada por los lechones, en ósea o muscular. The aim of this study was to evaluate the effect of porcine recombinant somatotropin (rpST) administered to piglets during their first week of life, on metabolic and somatometric variables. A total of 220 piglets born from 40 hybrid Landrace x Large White sows were used. Piglets were randomly assigned to either Group 1 (G1, Control, n = 106) or Group 2 (G2, rpST treatment, n = 114). The rpST dose was 1mg/kg every 24h during 7 consecutive days. Serum pH at birth showed significant differences between groups (7.42 ± 0.47 and 7.31 ± 0.59), although this difference dissapeared on day 8. There was a significant increase (P < 0,001) in plasma glucose levels for the treated group on day 8 (68.78 ± 10.44 and 103.71 ± 18.44). Average daily weight gain was also higher for the somatotropin treated group compared to the control (137.25 ± 31.31 and 209.21 ± 45.97). Comparisons for interaction between treatment and sex sh
Morphometry, Carcass Yield and Traits of Mexican Creole Goat Kids Slaughtered and Packed in a Federal Inspection Plant
M. Becerril-Herrera,O. Guzman-Pina,M. Alonso-Spilsbury,E.V. Dorsey-San Vicente
Journal of Biological Sciences , 2006,
Abstract: The objective of the present study was to evaluate the morphometry and carcass traits of Creole goats sacrificed and packed in a Federal Inspection Plant (FIP). The study was carried out in a FIP abattoir during May and June 2004. Fifty Creole male goats, 40 to 50 days old were used, brought form nearby family farms. Goats were transported without stops and they were not fed, nor provided with water. Carcasses were graded and 11 indicators were measured: both hot and cold carcass yields, cold carcass temperature, viscera weight, morphometry and pH, among others. When comparing the hot carcass weight with and without viscera (5.03 vs. 4.55), the values measured indicated that viscera represented 20.22% of the animals weight. The difference observed between hot carcass and cold carcass weight was 4.55 vs. 4.28 kg, respectively. Positive correlations were determined (R = 0.96) between hind-limbs (R = 0.65) and forelimbs (R = 0.69), as well as the one registered of both limbs with the hind and fore canes` perimeters. On the other hand, the abdominal and thoracic regions were highly correlated (R = 0.9). This is an indicator of the animal biotype, which shows that these animals are long linear with highly developed limbs. The pH mean of the hot carcass and the cold carcass was 6.06 and 5.97, respectively.
Growth,Morphometry and Reproductive Performance of Creole Cuino Pigs in Mexico
C. Lemus-Flores,R. Alonso Morales,J.G. Herrera Haro,M. Alonso-Spilsbury,R. Ram?rez-Necoechea,D. Mota-Rojas
Journal of Animal and Veterinary Advances , 2012,
Abstract: Several biotypes of the Mexicanc creole pig are in danger of extinction. This study was carried out in order to characterize the Mexican cuino pig. Growth, morphometry and reproductive traits are statistically described analysing the reproductive performance of 12 Cuino sows kept under confinement conditions. Average live weight was monitored at birth and 6 months later (0.86 and 43.84 kg, respectively). Results show that Cuino pigs tend to deposit more backfat than commercial breeds, their growth rhythm was adjusted to a polynomial equation (Y = 1.1138x2 - 4.0804x + 5.1355 R2 = 0.9955); it is slow at the beginning and after 91 days animals showed an accelerated growth. Average daily feed intake increased until pigs were five months old, from 0.403 to 1.930 kg., with an improved polynomial adjustment (Y = 0.2363x2 - 1.3129x + 5.7951 R2 = 0.82). Feed conversion was 4.596 in the first post-weaning month and 5.174 in the last month of fattening at 6 months. Cuino pigs are small, with short snout and a small number of teats. The variation in all the measured morphological variables was low (7.5 to 16.7%), this suggests that their morphology does not vary much. Prolificity of these pigs was low; the average number of pigs born alive was 4.95 with a litter birth weight of 4.35 kg and 4.12 weaned pigs with 16.09 kg at weaning. Present results indicate that the cuino pig has not been genetically improved since the time it has been in Mexico.
Diagnosis of Microbiological Contamination Risks in Frankfurt Type Sausage, Virginia Ham and Dried Salted Pork
M.G. Nunez-Gutierrez,J.M. Tapia-Gonzalez,M. Becerril-Herrera,R. Ramirez-Necoechea,M. Alonso-Spilsbury,D. Mota-Rojas
Journal of Food Technology , 2013,
Abstract: The objective of this study was to diagnose the risks of microbiological contamination in 3 meet products: Frankfurt type sausage, Virginia ham and dried salted pork, made in the meat processing plant at the University of Guadalajara. The influence from the physical infrastructure of the plant was evaluated such as the type and number of handlers, number of people present when the handling was carried out, as well as the time of manipulation and storage in refrigeration, the environmental conditions in processing areas and refrigeration and water from the municipal source (used to wash hands), equipment and utensils. Meat products with various preparation processes were chosen, individual microbiological tests for Salmonella, Escherichia coli and Staphylococcus aureus were made. The 90 point sanitary questionnaire was used to verify sanitation for physical risks in the processing plant. The results were analyzed using the EpiInfo 2002 data base. There was a significant effect (p< 0.05) between independent variables, number of people coming in per day, and time of refrigeration with S. aureus present in the sampled food. Using standard comparison we observed that 100% of the products had some kind of microorganism. The installations complied entirely with the 90 point questionnaire by 23.08%, partially by 42.31% and was incompliant by 34.62%.
Effects of Pre-Slaughter Transport, Lairage and Sex on Pig Chemical Serologic Profiles
D. Mota-Rojas,M. Becerril Herrera,M.E. Trujillo-Ortega,M. Alonso-Spilsbury,S.C. Flores-Peinado,I. Guerrero-Legarreta
Journal of Animal and Veterinary Advances , 2012,
Abstract: The aim of this research was to study the effects of pre-slaughter transport and lairage on the chemical serologic profile of swine, as well as its relationship with qualitative aspects of meat: pH, color and temperature. Forty eight Pietrain x Landrace pigs were monitored (24 females and 24 barrows). They were transported on straw bedding trucks without stops during 2 h and deprived of feed and water. Blood samples were taken before loading, at arrival to the slaughterhouse, after lairage and during bleeding (20 sec after they were electrically stunned). At arrival to the slaughterhouse pigs were randomly distributed in 4 groups: Rested (n = 24) non-rested (n = 24) these groups were also divided by sex. Blood samples were taken form groups 1 and 2 and the animals sent directly to the slaughter pens, whereas groups 3 and 4, after blood sampling, were taken to lairage pens. Glucose and Creatine Kinase (CK) showed a high increase in blood concentration, associated to an increase in muscular activity and a decrease in globulins concentration as a consequence of stress and immunosuppression. Hyperglycemia and lactic acidosis detected in animals without rest were statistically different (p<0.05) compared to the group that rested. Bicarbonate level significantly decreased (p<0.05) in non-rested animals as compared to rested animals. Results indicated that animals without rest before slaughter can show hemodynamic and metabolic alterations that lead to hyperglycemia, lactic acidosis and an abrupt descent of pH, altering the carcass color.
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