A survey of FIV antibodies and FeLV antigens in free-roaming cats in the capital area of Finland.     

A Sukura  T Salminen  L A Lindberg 《Acta veterinaria Scandinavica》1992,33(1):9-14

Feline immunodeficiency virus (FIV) was first isolated and identified in 1986. Since then it has been shown to have a worldwide distribution, and the infection generally appears to have reached a state of endemicity. This is the 1st study of FIV-prevalence in Finland. Serum samples of 196 free-roaming cats were tested for antibodies to FIV and FeLV antigens (Feline leukemia virus). With a combined enzyme-linked immunosorbent assay (ELISA), 13 of the cats (6.6%) turned out to be positive for FIV and 2 for FeLV (1.0%). Adult male cats in the capital area of Finland had a FIV prevalence of 24%, a relative proportion 4.7 times higher than that for females.  相似文献   

Prickly paddy melon (Cucumis myriocarpus) poisoning of cattle     

RA McKENZIE  RD NEWMAN †  AC RAYNER †  PJ DUNSTER 《Australian veterinary journal》1988,65(6):167-170

Twenty-six Hereford heifers died after eating mostly ripe fruit of Cucumis myriocarpus growing in a fallowed cultivation paddock. Four affected cattle were dehydrated and apparently had abdominal pain. Necropsy of three revealed intense congestion with haemorrhage of the alimentary tract, numerous C. myriocarpus seeds in ruminal contents, pulmonary congestion and oedema and, in two, swollen livers. Midzonal swelling and vacuolation of hepatocytes occurred in these two. C. myriocarpus fruit (83% by weight ripe) were dosed to two calves at 60 g wet weight/kg live weight. Both collapsed with tachycardia and dyspnoea and died within 6 h. Their packed cell volumes just before death had increased to 0.7. They had hydropic degeneration and necrosis of the ruminal mucosa, intense congestion and oedema of the rumen, abomasum and intestines, swollen and vacuolated hepatocytes and foci of myocardial degeneration and necrosis. Two other calves were dosed daily with 20 g fruit/kg for three days, then 40 g/kg for three days. One calf received a further 40 g/kg next day. Both calves developed persistent diarrhoea and neutrophilia, and their plasma gamma glutamyltransferase and bilirubin concentrations increased. Necropsy revealed necrosis and oedema of the rumen and swollen degenerate hepatocytes.  相似文献   

The effect of combined iron-selenium treatment on erythropoiesis and weight gain of piglets     

T Pekkanen  P Lindberg  S Sankari 《Acta veterinaria Scandinavica》1987,28(2):135-141

Ten sows were during their last month of gestation and first 4 weeks of lactation kept on a low Se ratio (0.014 ppm Se). Their 1-3 days old piglets (n = 108) were divided in 2 groups, the experimental and the control group. Blood samples were taken from the piglets before the age of 3 days. Each of the piglets of the experimental group (n = 54) was treated subcutaneously in connection with the blood sampling with 200 mg Fe⁺³ as iron dextran and 0,30 mg Se⁴⁴ as sodium selenite (Pigfer-Se, Orion Corporation Ltd., Orion Pharmaceutics Espoo, Finland). The piglets of the control group (n = 54) were correspondingly treated with 200 Fe⁺³ as iron dextran. Blood samples were again taken 7, 14 and 28 days after the first sample.The results showed that the mean increase in the number of erythrocytes during the first 7 days was significantly higher in the experimental group than in the control group (p = 0.006). No significant differences between the whole groups could be found in the later blood samples.When some haematological parameters of those of the piglets of the experimental and the control group, which before the age of 3 days had the whole blood Se ^ 55 μg/1 were compared (n = 16 and n = 22 respectively) the mean increase in the number of erythrocytes was found to be significantly higher both at 7 days and 14 days in the low Se piglets of the experimental group than the corresponding means of the control group (p = 0.005 and p = 0.016 respectively). At 28 days the difference between the means was not significant.The weekly mean weight gains of the low Se piglets of the experimental group were consistently higher at the successive weekly weighings than the corresponding means of the control group.  相似文献   

BVD control in Europe: current status and perspectives     

Moennig V  Houe H  Lindberg A 《Animal health research reviews / Conference of Research Workers in Animal Diseases》2005,6(1):63-74

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Utilization of Ensiled Sweet Potato (Ipomoea batatas (L.) Lam.) Leaves as a Protein Supplement in Diets for Growing Pigs     

Van An L  Hong TT  Ogle B  Lindberg JE 《Tropical animal health and production》2005,37(1):77-88

Four diets were formulated with protein from fishmeal (FM), groundnut cake (GC), ensiled sweet potato (Ipomoea batatas L. (Lam.)) leaves (SP) or ensiled sweet potato leaves with lysine (SPL). In experiment 1, 24 crossbred (Large White x Mong Cai) growing pigs were allocated randomly by sex into four groups of six pigs and given one of four diets. Experiment 2 was conducted using 16 crossbred pigs (Large White x Mong Cai) at four farms. On each farm, pigs were allocated to two experimental groups. One group was fed the FM diet and the other group the SPL diet. In experiment 1, the daily live weight gains (DLWG) were significantly higher (p < 0.05) for the FM and SPL treatments (542 and 536 g/day, respectively) than for the GC and SP treatments (464 and 482 g/day, respectively). Feed intake was highest (2.0 kg/day) for the SPL and lowest (1.7 kg/day) for the GC treatment (p < 0.05) and feed conversion ratio (FCR) was highest (3.8 kg/kg gain) for SP and lowest (3.5 kg/kg gain) for FM (p < 0.05). There were no significant differences for carcase measurements among diets (p > 0.05). The feed cost per kg live weight gain was lowest for the SP and SPL diets compared to the FM and GC diets. The results of experiment 2 show that there were no significant differences in feed intake, DLWG and FCR between the two diets (p > 0.05). In conclusion, sweet potato leaves can replace fishmeal and groundnut cake in traditional Vietnamese diets for growing pigs.  相似文献   

Influence of cereal non-starch polysaccharides on ileo-caecal and rectal microbial populations in growing pigs   总被引：2，自引：0，他引：2  

Högberg A  Lindberg JE  Leser T  Wallgren P 《Acta veterinaria Scandinavica》2004,45(1-2):87-98

The effect of cereal non-starch polysaccharides (NSP) on the gut microbial populations was studied in 5 growing pigs between 39-116 kg body weight according to a Latin square design. The diets were composed to contain different NSP levels. The control diet had a normal NSP content (139 g/kg dry matter (DM)), 2 diets had a low total amount of NSP (95 and 107 g/kg DM) and 2 diets had a high amount of total NSP (191 and 199 g/kg DM). Furthermore, one of the diets within each category had a content of insoluble NSP similar to the control diet and one had a high content of insoluble NSP. Samples were collected from the ileum, via intestinal post valve T-caecum (PVTC) cannulas surgically inserted at the ileo-caecal ostium, and from the rectum. The total microbial flora of the ileal samples were analysed for by defining base pair length with terminal restriction fraction length polymorphism (T-RFLP). The microbial diversity of the coliform flora of the ileal and rectal samples were defined by biochemical fingerprinting. It was observed that many terminal restriction fragments (TRFs) disappeared when new diets were introduced and that some characteristic TRFs were found in the high and low NSP diets, respectively. Both the total gut microflora and the coliform flora were influenced by the dietary NSP content.  相似文献   

Effect of season and location on the crop contents of local and improved scavenging hens in northern Vietnam     

Minh DV  Lindberg JE  Ogle B 《Tropical animal health and production》2006,38(2):121-129

An experiment was carried out to determine the effects of season (dry and rainy), location (lowland and highland villages) and breed (local and improved) on the amount and physical and chemical composition of the scavenged feed. This was done by crop content analysis of a total of 192 Ri (local) and 192 Luongphuong (LP, improved) hens at 20 weeks of age. The mean fresh weights of the crop contents were 16.9 and 33.3 g, for the dry and rainy seasons, respectively (p < 0.001), 24.3 and 25.9 g, for the Ri and LP breeds, respectively (p < 0.001), and 25.0 and 25.3 g, for the lowland and highland village, respectively (p > 0.05). The proportions of contents were human food leftovers 38.4% and 24.3%, grains 20.9% and 33.7%, insects and worms 9.6% and 11.2%, and green materials 8.8% and 13.8%, for the dry and rainy seasons, respectively (p < 0.05). The proportion of green materials was higher in the LP hens and highland villages, while the proportion of grains was higher in the Ri hens and lowland village (p < 0.05). The dry matter, crude protein (CP), ether extract (EE), total ash (Ash), calcium (Ca), phosphorus, and metabolizable energy (ME) contents were significantly higher for the rainy season (p < 0.01), and CP, Ash, Ca and ME were higher for the LP hens. The crude fibre content was higher in the dry season, and in the Ri hens and highland village (p < 0.001). The total and essential amino acid concentrations were significantly higher in the rainy season, and in the LP hens (p < 0.05), but were not different between locations (p > 0.05). Nutrient intakes from scavenging were estimated at between 20% and 30% of requirements.  相似文献   

Vitrification with DAP 213 and Cryotop of Ex Situ and In Situ Feline Cumulus–Oocyte Complexes     

AC Kozel  GC Luvoni 《Reproduction in domestic animals》2012,47(6):1003-1008

This study was undertaken to compare cryotolerance, in terms of viability and resumption of meiosis after warming and culture (24 and 48 h), of ex situ (isolated) and in situ (enclosed in the ovarian tissue) feline cumulus–oocyte complexes (COCs) vitrified with DAP 213 (2 m DMSO, 1 m acetamide, 3 m propylene glycol) in cryotubes or Cryotop method. Ovaries were harvested from 49 pubertal queens. Of each pair of ovaries, one was dissected to release COCs randomly divided into three groups: fresh COCs (control), ex situ COCs vitrified with DAP 213 and Cryotop. The cortex of the other ovary was sectioned into small fragments (approximately 1.5 mm³) and randomly assigned to be vitrified by DAP 213 or Cryotop. After warming, ex situ and in situ (retrieved form vitrified ovarian tissue) COCs were matured in vitro. Viability of oocytes was highly preserved after warming and culture in all treatments. Proportions of oocytes surrounded by complete layers of viable cumulus cells were remarkably decreased (p < 0.00001) in both vitrification procedures compared to fresh oocytes. Resumption of meiosis occurred in all treatments. After 24 h of culture, results were similar in ex situ and in situ vitrified oocytes regardless of the vitrification protocol used (range 29–40%), albeit lower (p < 0.05) than those of fresh oocytes (65.8%). After 48 h of culture, ex situ oocytes vitrified with Cryotop achieved the rates of meiosis resumption similar to fresh oocytes (53.8% vs 67.5%; p > 0.05) and ex situ and in situ oocytes vitrified with DAP 213 showed similar rates of resumption of meiosis. These findings demonstrated that DAP 213 and Cryotop preserve the viability of ex situ and in situ oocytes, but cumulus cells are highly susceptible to vitrification. However, the capability to resume meiosis evidences that feline immature oocytes vitrified as isolated or enclosed in the ovarian cortex have comparable cryotolerance.  相似文献   

Estimation of stem attributes using a combination of terrestrial and airborne laser scanning   总被引：2，自引：0，他引：2  

Eva Lindberg  Johan Holmgren  Kenneth Olofsson  Håkan Olsson 《European Journal of Forest Research》2012,131(6):1917-1931

Properties of individual trees can be estimated from airborne laser scanning (ALS) data provided that the scanning is dense enough and the positions of field-measured trees are available as training data. However, such detailed manual field measurements are laborious. This paper presents new methods to use terrestrial laser scanning (TLS) for automatic measurements of tree stems and to further link these ground measurements to ALS data analyzed at the single tree level. The methods have been validated in six 80 × 80 m field plots in spruce-dominated forest (lat. 58°N, long. 13°E). In a first step, individual tree stems were automatically detected from TLS data. The root mean square error (RMSE) for DBH was 38.0 mm (13.1 %), and the bias was 1.6 mm (0.5 %). In a second step, trees detected from the TLS data were automatically co-registered and linked with the corresponding trees detected from the ALS data. In a third step, tree level regression models were created for stem attributes derived from the TLS data using independent variables derived from trees detected from the ALS data. Leave-one-out cross-validation for one field plot at a time provided an RMSE for tree level ALS estimates trained with TLS data of 46.0 mm (15.4 %) for DBH, 9.4 dm (3.7 %) for tree height, and 197.4 dm³ (34.0 %) for stem volume, which was nearly as accurate as when data from manual field inventory were used for training.  相似文献   

Effect of replacing soybean protein with protein from porcupine joint vetch (Aeschynomene histrix BRA 9690) and stylo (Stylosanthes guianensis Composite) leaf meal on growth performance of native (Moo Lath) Lao pigs     

Phonepaseuth Phengsavanh  Jan Erik Lindberg 《Tropical animal health and production》2013,45(8):1795-1802

The effect of replacing soybean crude protein (CP) with legume leaf meal (LLM) CP on feed intake, growth performance and carcass traits was studied in native female Moo Lath Lao pigs. The diets comprised one traditional diet (T) without soybean meal, one control diet (C) with soybean meal and six diets iso-nitrogenous with diet C in which soybean protein was replaced (33, 66 and 100 % of CP) with LLM CP from porcupine joint vetch (PLM) or Stylosanthes (SLM). Feed and water were offered ad libitum. Replacing soybean CP with LLM CP reduced (P?<?0.05) intake of dry matter (DMI), CP (CPI), metabolisable energy (MEI), final body weight (BW) and average daily gain (ADG), but had no effect (P?>?0.05) on feed conversion ratio (FCR). Increasing the replacement rate of soybean CP with LLM CP had a negative linear effect (P?<?0.001) on DMI, CPI, MEI, final BW and ADG, and on all carcass traits except lean meat percentage. There were no differences in dressing percentage or organ weight and length between treatments. Supplementing diet T with soybean meal resulted in higher (P?<?0.05) DMI, CPI and MEI, lower (P?<?0.05) FCR, and higher (P?<?0.05) final BW and ADG. Slaughter weight, hot carcass weight, eye muscle thickness, back fat, fat in carcass and lean meat were lower (P?<?0.05) with diet T than diet C. In conclusion, LLM from stylo and porcupine joint vetch can be used as a CP source to partially replace soybean meal CP in the diet of growing native female Moo Lath Lao pigs.  相似文献