The work aimed to evaluate the effect of two doses of eCG on the superovulatory response, embryonic recovery rate and reproductive disorders. Thirty-two clinically healthy adult llamas were used, divided into two groups: Group I (700 IU eCG; n = 15) and Group II (500 IU eCG; n = 21). The superovulation protocol included: day 1, induction of ovulation (GnRH); day 4, application of eCG according to the dose established for each group; day 8, application of luteolytic (PGF2α); day 11, ultrasound to verify the number of follicles and application of GnRH analog; days 11 and 12, natural mating to induce ovulation; day 19, uterine lavage and embryo recovery (it was considered as cervical torsion when the Foley catheter was difficult to pass to the uterus); day 26: ultrasound evaluation to determine the presence of reproductive disorders. The number of follicles per female for groups I and II w...

El trabajo tuvo como objetivo evaluar el efecto de dos dosis de eCG sobre la respuesta superovulatoria, tasa de recuperación embrionaria y alteraciones reproductivas inducidas. Se utilizaron 32 llamas adultas, clínicamente sanas, distribuidas en dos grupos: Grupo I (700 UI eCG; n=15) y Grupo II (500 UI eCG; n=21). El protocolo de superovulación incluyó: día 1, inducción de ovulación (GnRH); día 4, aplicación eCG, según dosis establecida para cada grupo; día 8, aplicación de luteolítico (PGF2α); día 11, ecografía para verificar el número de folículos y aplicación de análogo de GnRH; días 11 y 12, monta natural para inducir ovulación; día 19, lavado uterino y recuperación de embriones (se consideró como torsión cervical cuando se dificultó el paso de la sonda Foley hacia el útero); día 26: evaluación ecográfica para determinar la presencia de alteraciones rep...

The vicuña is an emblematic species of fauna conservation in Peru. The vicuña population recovered after several years of timely measures for their conservation, moving to appendix II of CITES. Currently there are vicuñas that are kept free (silvestry) and populations kept enclosed in permanent fences (captivity). During 2018, 58 programmed captures (known as Chacus) were done in the Cusco Region, capturing 6777 animals, corresponding to 3229 and 3548 heads for silvestry and captivity, respectively. The age distribution in the case of juveniles was higher in silvestry (18.08%) with respect to the captivity system (7.2%), which would be evidence of the existence of higher mortality in this population. The 2012 national census indicated a higher proportion of female vicuñas in the general population of the Cusco Region; however, in this work similar populations were found by sex in bot...

The vicuña is an emblematic species of fauna conservation in Peru. The vicuña population recovered after several years of timely measures for their conservation, moving to appendix II of CITES. Currently there are vicuñas that are kept free (silvestry) and populations kept enclosed in permanent fences (captivity). During 2018, 58 programmed captures (known as Chacus) were done in the Cusco Region, capturing 6777 animals, corresponding to 3229 and 3548 heads for silvestry and captivity, respectively. The age distribution in the case of juveniles was higher in silvestry (18.08%) with respect to the captivity system (7.2%), which would be evidence of the existence of higher mortality in this population. The 2012 national census indicated a higher proportion of female vicuñas in the general population of the Cusco Region; however, in this work similar populations were found by sex in bot...

This aim of this study was to describe the fibre diameter and fleece weight of vicuñas in the Cusco Region, Peru. The fibre diameter of 302 fibre samples of young, juveniles and adult vicuñas were evaluated using an OFDA 2000® equipment. The samples were collected in different programmed captures (called Chaccus) under two management systems: wildness and semi-captivity. In addition, 633 fleeces were weighed and differentiated by age, sex and type of management of the animals. The present study was authorized through the Resolution of General Direction N.° 180-2016-SERFOR/DGGSPFFS. The average fineness of the fibre of young (13.24 μm), juveniles (12.03 μm) and adults (12.72 μm) was determined. The fineness of fibre for males and females was 12.99 and 13.53 μm in young, 12.06 and 12.02 μm in juveniles and 12.88 and 12.58 μm in adults respectively. The smallest diameter of the fi...

This aim of this study was to describe the fibre diameter and fleece weight of vicuñas in the Cusco Region, Peru. The fibre diameter of 302 fibre samples of young, juveniles and adult vicuñas were evaluated using an OFDA 2000® equipment. The samples were collected in different programmed captures (called Chaccus) under two management systems: wildness and semi-captivity. In addition, 633 fleeces were weighed and differentiated by age, sex and type of management of the animals. The present study was authorized through the Resolution of General Direction N.° 180-2016-SERFOR/DGGSPFFS. The average fineness of the fibre of young (13.24 μm), juveniles (12.03 μm) and adults (12.72 μm) was determined. The fineness of fibre for males and females was 12.99 and 13.53 μm in young, 12.06 and 12.02 μm in juveniles and 12.88 and 12.58 μm in adults respectively. The smallest diameter of the fi...

The aim of this study was to generate calibration equations to predict the nutritional chemical composition of the Italian rye grass (RG) (Lolium multiflorum Lam) by near infrared spectroscopy (NIRS). A total of 75 samples of RG of different harvesting weeks were collected from the IVITA Research Center in Huancayo (Peru). Spectrum capture was performed using NIRS and the chemical analysis was done for reference of the following components: crude protein (CP), ether extract (EE), total ash (CZ), crude fibre (CF) and neutral detergent fibre (NDF). A calibration and validation model by partial least squares (PLS) was developed and the correlation coefficient (R), coefficient of determination (R2), root mean square error of calibration (RMSEC), root mean square error of prediction (RMSEP), ratio range with error (RER) and residual predictive deviation (RPD) were used as statistics of accura...

The aim of this study was to generate calibration equations to predict the nutritional chemical composition of the Italian rye grass (RG) (Lolium multiflorum Lam) by near infrared spectroscopy (NIRS). A total of 75 samples of RG of different harvesting weeks were collected from the IVITA Research Center in Huancayo (Peru). Spectrum capture was performed using NIRS and the chemical analysis was done for reference of the following components: crude protein (CP), ether extract (EE), total ash (CZ), crude fibre (CF) and neutral detergent fibre (NDF). A calibration and validation model by partial least squares (PLS) was developed and the correlation coefficient (R), coefficient of determination (R2), root mean square error of calibration (RMSEC), root mean square error of prediction (RMSEP), ratio range with error (RER) and residual predictive deviation (RPD) were used as statistics of accura...