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Pharmacological Control of Estrus in Tropical Cattle,an Economical Assessment of Different Synchronization Protocols

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Open Journal of Veterinary Medicine 2012年第3期2卷 151-157页

作者： Juan J.Molina Ivan Molina Alejandro Jimenez Carlos S.Galina Juan J.Romero Asesor Laboratorios Intervet Schering Plough BogotaColombia Director Tecnico Agropecuaria Las Tinajas S.A. BogotaColombia Departamento de Reproduccion Facultad de Medicina Veterinaria y ZootecniaUniversidad Nacional Autonoma de MexicoMexico CityMexico Programa de Investigacion en Medicina Poblacional Escuela de Medicina VeterinariaUniversidad NacionalHerediaCosta Rica Campus Benjamín Nunez HerediaCosta Rica

To compare the fertility results and to assess the cost-effectiveness of several synchronization protocols applied under the conditions of beef cattle enterprises in Colombia, 1658 multiparous zebu crossbred cows mostly Brahman and Nelore ranging between 2 - 6 parities were used. Five protocols of pharmacological treatments varying in hormones used, dosage and the time of application were tested. All cows were inseminated at 52 h by appointment. Pregnancy diagnosis was undertaken over 45 d after insemination by rectal palpation. The total cost per cow and the total cost per gestation, for each protocol, were calculated. Taking a herd of one-hundred cows as baseline for calculations, it was estimated the cost of the total amount of pregnancies possibly obtained in each protocol;then, the excess between the costs of a pregnant cow and the cost of a treated cow was estimated. Additionally, the costs due to cows empty after four services were calculated. A total of 874 pregnancies were registered (52.7%), with pregnancies per protocol varying between 46.9% and 66.2% (p Estrus using pharmacological products seems to have a place in the management of cattle;however, caution should be called upon a careful assessment both from the part of the farm and the professional in charge of the enterprise to avoid using the technique indiscriminatively thus propitiating the use of a method that might not be cost efficient.

关键词： Tropics Bos Indicus Cost-Benefit Estru Synchronization

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