Evaluating risks to seabirds on the urban–coastal interface: Modelling dog attacks on little penguin populations in Tasmania

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Osteochondrosis dissecans in a juvenile roan antelope (Hippotragus equinus).

A 4-mo-old, juvenile roan antelope (Hippotragus equinus) presented for an acute and progressive lameness of the left hind limb, which was non-responsive to anti-inflammatory medication. The antelope was anesthetized for examination, radiography, and lab work. The left stifle joint had limited range of motion and was markedly swollen on physical examination. Radiography revealed thin cortices of the left distal femur and proximal tibia, as well as multiple lytic areas in the condyles. Euthanasia was performed due to the severity of the lesions and the animal's overall physical condition. Postmortem findings included a parasitic infection of the gastrointestinal tract. Cartilaginous erosions, associated with fibrotic connective tissue and viscous joint fluid, were identified in all appendicular joints. Perimortem lab work demonstrated anemia and hypoproteinemia. Joint fluid was inflammatory but non-infectious, and aerobic culture of the joint was negative for pathogens. Histologic examination identified focal, transmural necrosis of the articular cartilage with clefting. Osteochondrosis dissecans was diagnosed, which initiated an evaluation of the nutritional status and management of the herd. This is the first documented case of osteochondrosis dissecans in a roan antelope.     

酵母培养物具有抗大肠杆菌和抗真菌而不影响健康微生物区系的特性

<正>由产生肠毒素的大肠杆菌(Escherichia coli)所引起的腹泻是威胁家畜健康和存活的主要因素之一,尤其是对于仔猪和犊牛(Nagy等,2005;Fairbrother等,     

Immunization of foxes Vulpes vulpes by the oral and intramuscular routes with inactivated rabies vaccines.

Inactivated rabies vaccines prepared from common vaccine strains of virus were inoculated into foxes by the intramuscular and intestinal route. There were differences among the vaccines in the duration of antibody produced after intramuscular administration. Inactivated vaccines deposited directly into the lumen of the duodenum by means of a fiberscope caused seroconversion in some foxes, especially following a booster dose, but the antibodies produced were for the most part of short duration. The ERA modified live virus vaccine, in contrast, produced a satisfactory and long lasting antibody after intestinal instillation.     

Comparison of long-term progestin-based protocols to synchronize estrus before fixed-time artificial insemination in beef heifers

Two experiments were conducted to compare pregnancy rates resulting from fixed-time AI (FTAI) after administration of 1 of 2 long-term controlled internal drug release (CIDR)-based protocols. Heifers were assigned to treatment by age, BW, and pubertal status. The CIDR Select-treated heifers (Exp. 1, n = 37; Exp. 2, n = 192) received a CIDR (1.38 g of progesterone) from d 0 to 14, followed by 100 μg of GnRH, intramuscularly (i.m.) 9 d after CIDR removal (d 23) and PGF(2α) (25 mg, i.m.) 7 d after GnRH treatment (d 30). Heifers assigned to the Show-Me-Synch protocol (Exp. 1, n = 40; Exp. 2, n = 200) received a CIDR from d 0 to 14, followed by PGF(2α) 16 d later (d 30). Artificial insemination was performed at 72 or 66 h after PGF(2α) treatment for the CIDR Select- and Show-Me-Synch-treated heifers, respectively, and each heifer was given GnRH (100 μg, i.m.) at the time of AI. In Exp. 1, ovaries of each heifer were examined by transrectal ultrasonography on d 23 and 30 to characterize follicular dynamics. Follicles ≥5 mm and the presence of corpora lutea were recorded. On d 25, ovaries of each heifer were examined to characterize the status of dominant follicles recorded on d 23. Heifers were fitted with HeatWatch (DDx Inc., Denver, CO) estrus-detection transmitters at PGF(2α) to characterize estrus distribution up to FTAI. The diameter of dominant follicles on d 23 at PGF(2α) and on d 30, and the estrous response after PGF(2α) treatment up to the point of FTAI did not differ between CIDR Select- and Show-Me-Synch-treated heifers. Concentrations of progesterone in serum at PGF(2α) were greater (P = 0.07) in Show-Me-Synch- than CIDR Select-treated heifers (6.0 vs. 4.8 ng/mL, respectively). Pregnancy rates of heifers resulting from FTAI did not differ (P = 0.33) between CIDR Select- and Show-Me-Synch-treated heifers (CIDR Select, 59%; Show-Me-Synch, 70%). In Exp. 2, FTAI pregnancy rates tended (P = 0.07) to be greater in Show-Me-Synch-treated (62%) than in CIDR Select-treated (51%) heifers. Pregnancy rates at the end of the breeding season did not differ (P = 0.72; CIDR Select, 85%; Show-Me-Synch, 83%) between treatments. In summary, pregnancy rates resulting from FTAI were comparable for heifers assigned to each of the 2 long-term progestin-based protocols. The reduced treatment cost and animal handling associated with administration of the Show-Me-Synch protocol offer distinct advantages over the CIDR Select protocol despite similarities in pregnancy rates resulting from FTAI.