The aim of this experiment was to evaluate the effect of three levels of palm kernel cake (0, 3 and 6%) and the inclusion of two levels of enzymes β-glucanase and xylanase (0 and 0.05%) on the productive performance and quality of eggs in hens. Laying hens of the Hy-Line Brown line (n=216) of 46 weeks of age were used and distributed in a completely randomized block design with a factorial arrangement of 3x2. The experiment lasted 12 weeks. The inclusion of 3% palm kernel cake without enzyme supplementation (T3) significantly improved (p<0.05) the mean egg weight compared to the control treatment (T1). There were no significant differences between treatments with respect to initial and final weight, body weight gain, feed intake, feed conversion, egg production, egg mass, yolk pigmentation and yolk height, shell thickness, egg white height and Haugh units, as well as of energy, prote...

The aim of this experiment was to evaluate the effect of three levels of palm kernel cake (0, 3 and 6%) and the inclusion of two levels of enzymes β-glucanase and xylanase (0 and 0.05%) on the productive performance and quality of eggs in hens. Laying hens of the Hy-Line Brown line (n=216) of 46 weeks of age were used and distributed in a completely randomized block design with a factorial arrangement of 3x2. The experiment lasted 12 weeks. The inclusion of 3% palm kernel cake without enzyme supplementation (T3) significantly improved (p<0.05) the mean egg weight compared to the control treatment (T1). There were no significant differences between treatments with respect to initial and final weight, body weight gain, feed intake, feed conversion, egg production, egg mass, yolk pigmentation and yolk height, shell thickness, egg white height and Haugh units, as well as of energy, prote...

Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Producción Animal

The objective of this experiment was to evaluate the effect of two freezing methods on the spermatic viability of boar semen. Six collects (2 ejaculates per male) of three adult boars (Hampshire, Duroc and Landrace) were used. Immediately after the collection, volume, motility and spermatic concentration of each ejaculate were evaluated. Then, the semen was diluted with BTS solution (Beltsville Thawing Solution) and centrifuged at 1500 rpm for 10 min for plasma withdrawal. The pellet (spermatic portion) was diluted with freezing dilutor (A and B), cooled and equilibrated at 5 °C for two hours before freezing. The equilibrated semen was cryopreserved using two freezing methods: a) in pellets placing 0.25 ml aliquota of semen in holes prepared on the surface of a dry ice block for 20 min and then, pouring them in liquid nitrogen; and b) in straws of 0.5 ml exposing them at 7 cm over liqui...

The objective of this experiment was to evaluate the effect of two freezing methods on the spermatic viability of boar semen. Six collects (2 ejaculates per male) of three adult boars (Hampshire, Duroc and Landrace) were used. Immediately after the collection, volume, motility and spermatic concentration of each ejaculate were evaluated. Then, the semen was diluted with BTS solution (Beltsville Thawing Solution) and centrifuged at 1500 rpm for 10 min for plasma withdrawal. The pellet (spermatic portion) was diluted with freezing dilutor (A and B), cooled and equilibrated at 5 °C for two hours before freezing. The equilibrated semen was cryopreserved using two freezing methods: a) in pellets placing 0.25 ml aliquota of semen in holes prepared on the surface of a dry ice block for 20 min and then, pouring them in liquid nitrogen; and b) in straws of 0.5 ml exposing them at 7 cm over liqui...

El objetivo del presente trabajo fue evaluar el efecto de dos métodos de congelación sobre la viabilidad espermática de semen de verraco. Se utilizaron seis eyaculados (dos por macho), de tres verracos adultos de las razas Hampshire, Duroc y Landrace. Se evaluó el volumen, motilidad y concentración espermática de cada eyaculado. Posteriormente, el semen fue diluido con solución BTS (Beltsville Thawing Solution) y centrifugado a 1500 rpm por 10 min para retirar el plasma. El pellet (porción espermática) obtenido fue extendido con dilutor de congelación (A y B), enfriado y equilibrado a 5 °C por 2 horas previas a la congelación. El semen equilibrado fue criopreservado usando dos métodos de congelamiento: a) en pellets colocando alícuotas de 0.25 ml de semen equilibrado en agujeros preparados en la superficie del bloque de hielo seco manteniéndolo por 2 min y luego vertiéndo...

El objetivo del presente trabajo fue evaluar el efecto de dos métodos de congelación sobre la viabilidad espermática de semen de verraco. Se utilizaron seis eyaculados (dos por macho), de tres verracos adultos de las razas Hampshire, Duroc y Landrace. Se evaluó el volumen, motilidad y concentración espermática de cada eyaculado. Posteriormente, el semen fue diluido con solución BTS (Beltsville Thawing Solution) y centrifugado a 1500 rpm por 10 min para retirar el plasma. El pellet (porción espermática) obtenido fue extendido con dilutor de congelación (A y B), enfriado y equilibrado a 5 °C por 2 horas previas a la congelación. El semen equilibrado fue criopreservado usando dos métodos de congelamiento: a) en pellets colocando alícuotas de 0.25 ml de semen equilibrado en agujeros preparados en la superficie del bloque de hielo seco manteniéndolo por 2 min y luego vertiéndo...