RESUMEN
Bos indicus bulls 20 months of age grazed on pasture in Minas Gerais, Brazil either received 2 doses of the GnRF vaccine Bopriva at d0 and d91 (group IC, n=144) or were surgically castrated on d91 (group SC, n=144). Slaughter on d280, was 27 weeks after castration. Adverse safety issues in 8% of group SC bulls following surgery contrasted with 0% in group IC bulls. At d105 testosterone levels were suppressed to similar levels in both groups. Importantly, group IC bulls had higher live weight, hot carcass weight, ADG (P<0.005) and dressing percentage (P<0.0001) compared to group SC animals. There were no negative effects on carcass or meat quality traits, thus immunocastration was concluded to offer a safe and effective method that provides production gains, and improves animal welfare in Bos indicus beef bulls without impacting meat and carcass quality.
Asunto(s)
Hormona Liberadora de Gonadotropina/inmunología , Carne/normas , Orquiectomía/veterinaria , Vacunas/inmunología , Animales , Peso Corporal , Brasil , Bovinos/crecimiento & desarrollo , Calidad de los Alimentos , Masculino , Orquiectomía/métodos , Testículo/crecimiento & desarrollo , Testículo/inmunología , Testosterona/sangre , Vacunación/veterinariaRESUMEN
The objective of this study was to characterize opinions and practices of Wisconsin dairy producers about biosecurity and animal wellbeing. Wisconsin dairy producers were surveyed using a mailed questionnaire and responder herds were categorized based on the number of lactating cows: very small herds (< or =50 lactating cows; n = 279); small herds (51 to 100 lactating cows; n = 202); medium herds (101 to 200 lactating cows; n = 42); and large herds (>200 lactating cows; n = 37). Producers from large herds adopted more biosecurity practices than those from small herds, but biosecurity risks were common. Almost half of the responders indicated that they purchased cattle, but few (49.4%) performed diagnostic testing of those cattle. The frequency of diagnostic testing and examination of purchased cattle increased with herd size. Producers generally (80%) believed that they used the "right amount" of antibiotics, but the use of written treatment protocols increased with herd size. Producers from large and medium herds reported much higher usage of computerized (65.7 and 17.5%, respectively) and paper records (42.9 and 22.5%, respectively) compared with producers from smaller herds. Almost all (92.6%) believed that Johne's disease was an important issue for the dairy industry, but only 9% had enrolled in the official Wisconsin control program. Most producers (88.6%) believed that dehorning caused at least a small amount of pain, but the majority (81%) did not use local anesthetics. Producers minimized risks with which they were most familiar. Drinking raw milk was not considered a human health risk by almost half the responders, whereas bovine spongiform encephalopathy was considered "no risk" to only 37%. Raw milk was consumed by more than 60%, but regular consumption of raw milk decreased from 47.7% (very small herds) to 24.3% (large herds); perception of the risk of raw milk increased from 46.2% (very small herds) to 56.8% (large herds) with herd size. Larger farms had more knowledge of personal health risks related to zoonotic pathogens. Overall, most management practices were associated with herd size, but many beliefs regarding important dairy farm issues were consistent.
Asunto(s)
Bienestar del Animal , Industria Lechera/métodos , Conocimientos, Actitudes y Práctica en Salud , Medidas de Seguridad , Alimentación Animal , Animales , Bovinos , Enfermedades de los Bovinos/prevención & control , Encefalopatía Espongiforme Bovina , Femenino , Manipulación de Alimentos , Vivienda para Animales , Lactancia , Mastitis Bovina/diagnóstico , Mastitis Bovina/tratamiento farmacológico , Mastitis Bovina/prevención & control , Leche/microbiología , Paratuberculosis/prevención & control , Densidad de Población , Encuestas y Cuestionarios , WisconsinRESUMEN
Two cases of pulmonary cystic adenomatoid malformation are presented. The first case presented with bilateral pulmonary cystic involvement associated with oligoamnios and feto-placental anasarca. A peculiar feature of this case was the elevated level of alphafetoprotein in the amniotic fluid. In the second case, the pulmonary involvement was limited to one lobe. There was coexistent aplasia of the diaphragm. Premature rupture of the amniotic membranes necessitated a therapeutic abortion at 21 weeks of pregnancy. In connection with these two cases, a discussion based on the data in the literature.