The study aimed to evaluate the effect of applying seminal plasma, a GnRH analogue and follicular ablation on the follicular dynamic in llamas. The study was carried out in Puno, Peru, using 24 llamas selected under the criterion of presenting a preovulatory follicle >7 mm, determined by transrectal ultrasound. The animals were randomly distributed into four groups: T1, 1 ml PBS IM; T2, 2 ml seminal plasma IM; T3, 1 ml GnRH IM; T4, follicular ablation. The animals were evaluated, by transrectal ultrasound, every 2 h between 20 and 36 h post-treatment to determine ovulation; subsequently daily until day 9 and then every 2 days until day 15 post-stimulation to determine the interval to the emergence of a new follicular wave, the appearance of the new dominant follicle and the diameter of the corpus luteum on day 8 of treatment. No significant difference (p<0.05) was found between tre...

The study aimed to evaluate the effect of applying seminal plasma, a GnRH analogue and follicular ablation on the follicular dynamic in llamas. The study was carried out in Puno, Peru, using 24 llamas selected under the criterion of presenting a preovulatory follicle >7 mm, determined by transrectal ultrasound. The animals were randomly distributed into four groups: T1, 1 ml PBS IM; T2, 2 ml seminal plasma IM; T3, 1 ml GnRH IM; T4, follicular ablation. The animals were evaluated, by transrectal ultrasound, every 2 h between 20 and 36 h post-treatment to determine ovulation; subsequently daily until day 9 and then every 2 days until day 15 post-stimulation to determine the interval to the emergence of a new follicular wave, the appearance of the new dominant follicle and the diameter of the corpus luteum on day 8 of treatment. No significant difference (p<0.05) was found between tre...

The aim of this study was to evaluate the in vivo immunogenic capacity of a recombinant outer membrane protein of Pasteurella multocida called P6-like (rP6-like). The field trial was carried out in an alpaca production unit in Puno, Peru, and the processing of the samples was done in the Faculty of Veterinary Medicine of San Marcos University in Lima. Four groups of 5 animals were formed, and they were inoculated according to group with a) normal saline solution, b) bacterin, c) rP6-like, d) combination of bacterin + rP6-like. Blood samples were collected on days 0, 5, 7, 9, 12 and 15 post-inoculation. Single-point indirect ELISA tests were designed for the relative quantification of specific anti-rP6-like antibodies and for total anti-total P. multocida protein antibodies. The group inoculated with rP6-like showed significant elevation of antibodies from day 7 (p<0.05) until day 15 p...

El objetivo de estudio fue comparar las características testiculares mediante la ultrasonografía B mode y Doppler en alpacas tui y adultos. El estudio fue realizado en el Centro Experimental Chuquibambilla de la Universidad Nacional del Altiplano, Puno, Perú, durante la época reproductiva (marzo). Se utilizaron 15 tui machos (G1) de 12 a 14 meses de edad y 14 adultos (G2) de 24 a 36 meses. Se evaluaron las características ultrasonográficas B mode (largo [mm], ancho [mm], área [cm2] y volumen testicular [cm3]) y Doppler (índice de resistencia [IR], índice de pulsatibidad [IP] y área vascular testicular [AVT]) con un equipo Draminski 4Vet® y un transductor micro convexo y lineal con una frecuencia de 9 MHz. Lo datos fueron analizados mediante un diseño factorial de 2x2. El largo, ancho, volumen y área testicular dentro de cada grupo etario no presentó diferencias significativ...