Search
Now showing items 11-20 of 32
Manejo reproductivo del ganado bovino en los diferentes sistemas de producción de la región Huetar Norte y Chorotega de Costa Rica .
(Universidad Nacional, Costa Rica., 2017)
El presente trabajo describe una práctica dirigida sobre el manejo reproductivo de
los tres sistemas de producción bovina existentes en la región Huetar Norte y Chorotega de
Costa Rica, realizada durante un año (de abril ...
Intervalo parto-concepción en ganado lechero especializado de Costa Rica
(Universidad Nacional, Costa Rica, 2019-03-25)
Resumen: Un hato lechero eficiente debe producir una cría viva y sana por vaca, por año, y esto se debe de conseguir con un Intervalo Parto Concepción (IPC) no superior a 100 días. Objetivo: describir aspectos epidemiológicos ...
Relación del estado fisiológico de ovarios de cerdas con la causa del descarte en dos granjas de Costa Rica
(Revista Científica, FCV-LUZ, 2012-03-23)
Con el objetivo de determinar la relación de la condición funcio-
nal de los ovarios de cerdas con la causa del descarte, se reali-
zó un análisis de 260 pares de gónadas de hembras porcinas,
provenientes de cerdas de ...
The impact of overstocking and negative energy balance on quantitative measurement of non-typhoidal Salmonella in periparturient dairy cattle
(Frontiers in Veterinary Science, 2022-02-17)
Stressful conditions in animal production facilities may exacerbate the fecal shedding and
foodborne transmission of non-typhoidal Salmonella enterica subsp. enterica. Dairy cows
are reservoirs of this zoonotic microorganism, ...
Additive genetic and heterosis effects for milk fever in a population of Jersey, Holstein × Jersey, and Holstein cattle under grazing conditions
(FASS Inc. and Elsevier Inc., 2018-10)
The aim of this study was to estimate additive genetic and heterosis effects for milk fever (MF) in Costa Rican dairy cattle. A farm-based management information software was used to collect 223,783 parity records between ...
Behavioral characteristics of Bos indicus cattle after a superovulatory treatment compared to cows synchronized for estrus
(Asian-Australasian Association of Animal Production Societies(AAAP), 2011-10)
The intensity and duration of sexual behavior in Bos indicus was assessed through the continuous observation of sexual receptivity. Two groups of cows were formed: only synchronized (n = 50) and other group further ...
Breeding soundness evaluation of extensively managed bulls in Costa Rica
(Elsevier, 1999-02-17)
This paper describes the results of single breeding soundness evaluations (BSE) in 898 Bos indicus, Bos taurus and B. indicus x B. taurus bulls, 1 to 12 yr. old, extensively reared in different climatic regions of Costa ...
Effect of neosporosis on productive and reproductive performance of dairy cattle in Costa Rica
(Elsevier B.V, 2005-12)
A cross-sectional study was conducted to assess the effect of neosporosis on productive and reproductive parameters in dairy cows. Cows (n = 2743) from 94 farms located in the most important dairy areas in Costa Rica were ...
Clinical and pathological findings of a sac-like formation in the tunica vaginalis of a nelore (Bos indicus) bull
(Blackwell, 2010)
Contents A seven-month-old purebred Nelore calf was diagnosed with a bilateral finger-shaped swelling although more prominent at the left side of the scrotum, located longitudinal and parallel to epididymis corpus. The ...
Deferred bulls: are cycles per conception and pregnancy rate determined by the type of spermiogramme deviation under natural mating?
(Elsevier, 2016)
Deferred bulls undergo clinical deviations that could
be transitory or have an uncertain potential fertility output. Data in Costa Rica showed no significant differences
in conception rate (CR) between sound vs. deferred ...