Best Time to Increase Bovine Calving Based on Dairy Indicators of Commercial Herds in Camagüey

The best time to increase calving based on dairy production indicators was determined. Records from 2 036 Holstein x Zebu cows were evaluated monthly. This research took place between 2008 and 2014, within a five-year pe-riod as minimum, in the three kinds of dairy facilities (Basic Unit of Cooperative Production, Basic State Farm, and a farm). The variables used were births, total milk production, average milk liter/cow/day, and milking cows, which were decomposed according to season using a multiplication model. Seasonal behavior was observed in all the variables without a defined general pattern present in the total dairy production, and milk liter per cow/day (peaks from June to October), which coincided with the beginning of the pasture production peaks. Total milk production and milk liter average per cow/day are elements that can help set up the best moment to increase calving

Influence of Body Condition on Teaser Bulls Libido with Artificial Phymosis.

The influence of body condition on teaser bull libido from commercial dairy herds  at the Cattle Raising Enterprise Triángulo 1, in  the province of Camagüey, Cuba  was assessed. A number of 140 crossbred males (Holstein / Zebu) aged 13-75 months old were examined from 2007 to 2010.  A linear regression model to evaluate the libido (0-10 scale) was used as independent variable for the  body condition (1-5  scale). Libido reached 6.59 points ± 1.751 (typical deviation), considered between good and very good, and the body condition was 2.96 ± 0.598 (typical deviation), optimum for estrus detection.  Libido increase was observed in relation with body condition maybe due to the high incidence of anestrus, and also due to limited rest with cows in estrus

Influence of Season and Daily Mating Time upon Sexual Libido of Artificially Phimotic Bull-Teasers.

Influence of season and time devoted to daily mating upon sexual libido of artificially phimotic bull-teasers was evaluated in female dairy cattle herds at the Livestock Center “Triángulo 1” in Camagüey, Cuba. To this end, 140 Holstein x Zebu crossbred males at ages between 13 and 75 months old were studied from 2007 to 2010. Samples statistic were estimated. A covariance analysis (ANACOVA) including age as a covariable was performed to eva-luate bull-teasers sexual libido as a dependent variable of daily mating time and season. Despite significant differ-ences (P < 0,000) in sexual libido concerning restricted daily mating (6,95 points) and free daily mating (5,94 points), none were found for season. These differences in findings are attributable to uncontrolled matings. Rotating bull-teasers and determining male-female rate by the service capacity test are recommended

Momento óptimo para intensificar la parición a partir de indicadores de la producción láctea de rebaños bovinos comerciales en Camagüey.

Se determinó el momento óptimo para intensificar la parición a partir de indicadores de la producción de leche.  Se evaluaron  mensualmente los registros de 2 036  vacas mestizas Holstein x Cebú; la investigación se realizó desde el año 2008 hasta 2014 con un mínimo de un quinquenio, en cada una de las tres formas de producción (Un idad Básica de Producción Cooperativa, Unidad Empresarial de Base y una granja). Las variables empleadas fueron:  nacimien-tos, producción total de leche, promedio de litros por vaca por día, vacas en ordeño, a las que se les realizó el proceso de descomposición estacional con un modelo multiplicativo. Existió comportamiento estacional en todas las variables, sin definir un patrón general como ocurrió en los indicadores de producción total de leche y en el promedio de litros por vaca por día (picos máximos de  junio a octubre) los que coincidieron con el inicio de la etapa de mayor producción del pastizal. La producción total de leche y el promedio de litros por vaca por día constituyen elementos para establecer el momento óptimo de intensificar la parición.Optimum Time to Increase Calving from Dairy Production Indicators of Commercial Bovine Herds in Camagüey.ABSTRACTThe best time to increase calving from milk production indicators was determined.  Records from 2 036 Holstein x Zebu cows were evaluated monthly. This research took place between 2008 and 2014, with a five-year period as minimum, in the three kinds of production facilities (Basic Unit of Cooperative Production, Basic Enterprise Unit, and a farm).  The variables used were births, total milk production, milk liter average/cow/day, and milking cows, which underwent seasonal decomposition using a multiplication model.  Seasonal behavior was observed in all the variables, without a defined general pattern, as present in the total milk production, and milk liter per cow/day (peaks from June to October), which matched the beginning of the pasture production peaks. Total milk production and milk liter average per cow/day are elements to set up the best moment to increase calving

Influence of Age on Sexual Libido of Bull-Teasers in Dairy Cattle Herds.

Influence of age on sexual libido of bull-teasers was evaluated in daily cattle herds at the Livestock Center “Triángulo 1” in Camagüey, Cuba. To this purpose, 140 Holstein x Zebu crossbred bull-teasers at ages from 13 to 75 months old were studied from 2007 to 2010. Sexual libido was evaluated as an age dependent variable by a linear regression model. Age (39,76 ± 19,89 month-old standard deviation) showed a significant positive influence upon sex-ual libido (6,59 points ± 1,75 standard deviation). Sexual libido increase with age was probably due to older bull-teasers’ social rank and experience. Although bull-teasers younger than 24 months old showed an acceptable minimal sexual libido and could be fit for their role if rationally managed, some other factors like body build, management, environment, and age group must be assessed to this end

Influencia de la época del año y eltiempo de acceso diario a las hembras, en la libido de receladores vacunos con fimosis artificial.

Se evaluó la influencia de la época del año y del tiempo de acceso diario al rebaño de hembras, en la libido sexual de receladores vacunos con fimosis artificial en la Empresa Pecuaria Triángulo 1 de Camagüey, Cuba. Desde 2007 hasta 2010 fueron examinados 140 machos mestizos Holstein por Cebú, con edades entre los 13 y 75 meses. Se cal-cularon los estadígrafos generales y se evaluó la libido como variable dependiente del tiempo de acceso diario al re-baño de hembras y de la época del año, por análisis de covarianza, donde se tomó la edad como covariable. La libido fue mayor significativamente (P < 0,000) para los receladores de acceso diario restringido a las hembras con 6,95 puntos en relación a los de libre acceso que alcanzaron 5,94 puntos. La libido sexual fue mayor en los receladores que tuvieron acceso diario restringido a las hembras independientemente de la época del año, producto del grado de agotamiento físico en la actividad de montas incontrolada. Se recomienda la rotación de los receladores y determinar la proporción macho-hembra, empleando la prueba de la capacidad de servicio.Influence of Season and Daily Mating Time upon Sexual Libido of Artificially Phimotic Bull-Teasers.ABSTRACTInfluence of season and time devoted to daily mating upon sexual libido of artificially phimotic bull-teasers was evaluated in female dairy cattle herds at the Livestock Center “Triángulo 1” in Camagüey, Cuba. To this end, 140 Holstein x Zebu crossbred males at ages between 13 and 75 months old were studied from 2007 to 2010. Samples statistic were estimated. A covariance analysis (ANACOVA) including age as a covariable was performed to evaluate bull-teasers sexual libido as a dependent variable of daily mating time and season. Despite significant differences (P < 0,000) in sexual libido concerning restricted daily mating (6,95 points) and free daily mating (5,94 points), none were found for season. These differences in findings are attributable to uncontrolled matings. Rotating bull-teasers and determining male-female rate by the service capacity test are recommended

Influencia de la condición corporal en la libido sexual de receladores vacunos con fimosis artificial.

Se evaluó la influencia de la condición corporal en la libido sexual de receladores vacunos en rebaños lecheros comerciales de la Empresa Pecuaria Triángulo 1, en la provincia de Camagüey, Cuba. Fueron examinados 140 ma-chos mestizos Holstein por Cebú, con edades desde los 13 hasta los 75 meses, desde el año 2007 hasta 2010. Se uti-lizó un modelo de regresión lineal para evaluar la libido (escala de 0 a 10) como variable dependiente de la condición corporal (escala de 1 a 5). La libido alcanzó la cifra de 6,59 puntos ± 1,751 (desviación típica), catalogada entre bue-na y muy buena, y la condición corporal fue de 2,96 ± 0,598 (desviación típica), óptima para la detección de estros. Se observó que la libido incrementó con la condición corporal, posiblemente por baja actividad sexual debido a alta incidencia de anestro y al descanso por el contacto restringido con las hembras en estro

Age Influence on Sexual Libido in Artificially Phimotic Bull-Teasers

Influence of age upon sexual libido in artificially phimotic bull-teasers was determined at the Livestock Center Triángulo 1 in Camagüey province, Cuba. One hundred and forty Holstein x Zebu crossbred animals at ages 13 to 75 months old were studied from 2007 to 2010. Sexual libido was evaluated as an age dependent variable by a linear regression model using the SPSS statistical package version 15.0.1. Age (39,79 months old ± 19,89 typical deviation) showed a significant positive influence on sexual libido (6,59 points ± 1,75 typical deviation). The increase in libido by age was probably due to social rank and experience of more mature males. However, males between 13 months of age or ever showed an acceptable minimal libido rate, hence they could be fit for their role if rationally used and their body built an access to female herd are taken into account.La influencia de la edad sobre la libido sexual en teasers toros artificialmente fimóticos se determinó en el Centro Ganadero Triángulo 1 en la provincia de Camagüey, Cuba. Se estudiaron ciento cuarenta animales de raza Holstein x Zebu de edades comprendidas entre los 13 y los 75 meses de edad, desde 2007 hasta 2010. La libido sexual se evaluó como una variable dependiente de la edad mediante un modelo de regresión de oreja lineal utilizando el paquete estadístico SPSS versión 15.0.1. La edad (39,79 meses ± 19,89 desviación típica) mostró una influencia positiva significativa sobre la libido sexual (6,59 puntos ± 1,75 desviación típica). El aumento de la libido por edad probablemente se debió al rango social y la experiencia de los machos más maduros. Sin embargo, los varones entre los 13 meses de edad o alguna vez mostraron una tasa de libido mínima aceptable, por lo tanto, podrían ser adecuados para su función si se los utiliza de manera racional y su cuerpo se construye y se tiene en cuenta el acceso al hato femenino