Female llama without calf at foot, in good reproductive conditions and bearing a follicle ³7 mm in the ovaries, detected by ultrasonography, were selected (n = 64). All animals were administered 5 mg of LH(Lutropin V) to synchronize the newly emergent follicular wave.Asecond ultrasonography evaluation was done 12 days later to confirm the presence of a dominant follicle (³7mm) and then, animalswere randomlydistributed into four groups. The first three groups were i.m. injected (2 ml)with llama, alpaca and bull seminal plasma, respectively, and the fourth group was injected with PBS (phosphate basic serum) and remained as control. The occurrence of ovulation was evaluated two days later.All animals injectedwith llama and alpaca seminal plasma ovulated, whereas only 25% of llamas treated with bull seminal plasma, and none of the control group ovulated. The size of the corpus luteum 9 day...

It is reported the case of an adult titi monkey (Plecturocebus oenante) parasitized with Prosthenorchis elegans, which died at the end of December 2019. The animal was in a wildlife rescue centre located on the banks of the Shilcayo Quebrada, the entrance gate of the national park "Cordillera Escalera", in San Martín, Peru. The animal, living in semi-captivity, did not show clinical signs, but it collapsed from a height of 5 m. At necropsy, abdominal exudate, perforation at the level of the small intestine, congestion of blood vessels and mesenteric lymphadenopathy, nodulations in the intestinal wall and a severe infection of white and round parasites were evidenced. The coproparasitological examination revealed characteristic eggs of the genus Prosthenorchis and the analysis of the adult parasite revealed the cranial hooks and characteristic structures of the species Prosthenorchis ele...

Se seleccionaron 64 llamas hembras sin cría al pie y en condiciones reproductivas óptimas. El criterio de selección se basó en la presencia de un folículo dominante ³7mm, detectado por ecografía transrectal.Alas hembras seleccionadas se les aplicó 5mg deLH (LutropinV) para realizar una sincronización de la emergencia de una nueva onda folicular, confirmándose 12 días después la presencia de un nuevo folículo dominante (³7 mm). Los animales fueron entonces distribuidos al azar en cuatro grupos. Alos primeros tres grupos se les inyectó 2 ml vía i.m. de plasma seminal de llama, alpaca y toro, y al cuarto grupo (control) se le aplicó PBS (suero básico fosfatado). La ocurrencia de ovulación se evaluó dos días después, encontrándose que las tratadas con plasma seminal de llamas y alpacas tuvieron una tasa de ovulación del 100%, las tratadas con plasma seminal de toro de...

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The aim of this study was to determine the presence of ectoparasites in the gills of 73 adult tilapia (Oreochromis niloticus) from seven ponds located in the Bello Horizonte Sector, Banda de Shilcayo district, San Martín, Peru. Sampling was carried out between January and February 2021. Measurements of size, temperature and pH of the ponds were recorded and the measurements of the ponds and fish density were obtained from fish farms records. The fish were taken to the laboratory for the dissection of the gills and the collection and fixation of the ectoparasites. Results showed that 35.6% (26/73) of fish were infested with one or more ectoparasites. The presence of monogeneans of the genus Chclidogyrus sp, family Dactylogyridae (28.8%) and the protozoan Trichodina sp (11.0%) (8/73) was determined.

The case of an 8-year-old albino male Central America agouti (Dasyprocta punctata) bred in captivity in San Martín, Peru, with the presentation of a well-differentiated squamous cell carcinoma on the skin is reported. The appearance of a scabby skin lesion with macroscopic granulomatous characteristics was evidenced in the right temporal region recurrently after symptomatic treatment based on amoxicillin, dexamethasone, vitamin K and anti-myasis. The lesion rapidly evolved into an exophytic, expansive, haemorrhagic, and ulcerated infiltrative tumour mass. A cytological examination was performed, revealing a picture compatible with a malignant neoplasm of epithelial origin, and as a well-differentiated squamous cell carcinoma at the histopathological level when performing the necropsy. This report describes the first case of a cutaneous squamous cell carcinoma, both its macroscopic and m...