Implementation of an integrated system of reproductive technology and management in a breeding cattle in the central semi-arid zone in the province of La Pampa
DOI:
https://doi.org/10.19137/cienvet-201921106Keywords:
Eficent Breed, Caldenal Zone, Anoestrous post-partum, IATFAbstract
The beef cattle rearing is an economic and social activity in La Pampa province, developed in an area of natural forages, with severe weather and edaphic limitations. The present trial was carried out on a beef farm with 320 British crossbreed cattle, at Toay Department, La
Pampa. During a period of five years, a protocol as following was implemented: three-time estrous synchronization followed by fixed-time artificial insemination plus natural mating until the end of the breeding period. The protocol used for artificial insemination started 40 days post-partum and each cow was classified by a colour ear tag and by probable date of delivery. At day zero, an intra-vaginal progesterone dispositive (0.5 g, i.v., Dib, Sintex S.A., Argentina) was placed to all cows in combination with an estradiol benzoate dose, when the dispositive was removed, after 7 days, the animals received a dose of prostaglandin (Cloprostenol, 2 cc., i.m., Ciclase DL, Sintex S.A.) and estradiol cypionate (1 mg, i.m. Cipiosyn, Sintex S.A., Argentina), to finally be inseminated at day 9. Thereafter, the protocol finished with the incoming of 5% of bulls until the end of the predetermined breeding period. The pregnancy percentage of both cows and heifers increased through the study period to values of 90 and 91%, respectively. 70% of parturition was concentrated during the first month, 23% in the second and just 3% during the last month of calving season. The suggested system allows increasing the reproductive efficiency of the cattle herd, achieving both a higher percentage of early pregnancy and increasing interparturition interval allowing a better recovery of the reproductive tract.
Downloads
References
Anuario 2016. Estadísticas agropecuarias del Ministerio de la Producción de la Provincia de La Pampa. www.estadisticalapampa.gov.ar
Frank, E.; Llorens, E. y Cabral, D. Productividad de los pastizales naturales de la provincia de La Pampa. Subsec. de Asuntos Agrarios, Cambio Rural, INTA, SAGPyA 1998.
Adema, E.; Gomez Hermida, V.; Buschiazzo, D.; Babinec, F.; Ibarguren, C. y Rucci, T. Rolado de arbustos e intersiembra de Panicum coloratum en un pastizal natural de la
Pampa. Siembra Directa II. Ed INTA.2001.
Adema, E.; Martinez, H. y Montes, M. Informe de suelo y vegetación campo anexo INTA Chacharamendi (L.P.). EEA Anguil INTA, Ministerio de Asuntos Agrarios (L.P.) Dirección de suelos y pastizales naturales.1995
National Research Council. Nutrient Requeriments of Beef Cattle. Seventh Revised Edition. USA. 1996
.Montiel, F. y Ahuja, C. Body condicioón as suckcling as factors influencing the duration of postpartum anestrus in cattle. Revieu. Animal Reproduction Science.2005; vol. 85. Issues 1 – 2.
Williams, G.L.; Gazal, O.S.; Guzman Vega, G.A.; Stanko, R.L. Mechanism regulating suckling mediated anovulation in the cow. Animal Reproduction Science. 1996; 42: 289– 297.
Witbank, M.C.; Gumen, A. y Sartori, R. Phusiological Classification of anovulatory condition in cattle. Theriogenology.2002; 57: 21 – 52.
Short, R.E.; Bellows, R.A.; Staigmiller, R.B.; Berardinelli, J.G. y Custer, E.E. Physiological mechanisms controlling anestrus an infeertility in pospartum beef cattle. Journal Animal Science. 1990; 68: 799 – 816.
Wheaton JE1, Lamb GC. Induction of cyclicity in postpartum anestrous beef
cows using progesterone, GnRH and estradiol cypionate (ECP). Anim Reprod
Sci. 2007;102(3-4):208-16.
Sá Filho MF, Ayres H, Ferreira RM, Marques MO, Reis EL, Silva RC, Rodrigues CA, Madureira EH, Bó GA, Baruselli PS. Equine chorionic gonadotropin and gonadotropin-releasing hormone enhance fertility in a norgestomet-based, timed artificial insemination protocol in suckled Nelore (Bos indicus) cows. Theriogenology.2010; 73:651-658.
Schafer DJ, Bader JF, Meyer JP, Haden JK, Ellersieck MR, Lucy MC, Smith MF, Patterson DJ. Comparison of progestin-based protocols to synchronize estrus and ovulation beforefixed-time artificial insemination in postpartum beef cows. Journal Animal Science. 2007; 85:1940-1945.
Soca, P.; Claramunt, M.; do Carmo, M. Sistema de cría vacuna en ganadería pastoril sobre campo nativo sin subsidios: propuesta tecnológica para estabilizar la producción de terneros con intenciones de bajo costo y de fácil implementación. Revista Ciencia Animal. Facultad de Ciencias Agronomicas. U. de Chile. 2007; 3: 3 – 22.
De Nava, G. El rol del veterinario en la instrumentación de programas de IATF. Jornadas 6 Uruguayas de Buiatria. 2015a; 43: 115 – 126.
De Nava, G. Manejo reproductivo controlado en la cría: Resultados de 17 años de implementación de un sistema integrado de tecnologías reproductivas. Octavas Jornadas Taurus de Reproducción Bovina. Septiembre 2016, Buenos Aires, Argentina
Downloads
Published
How to Cite
Issue
Section
License
Al momento de enviar sus contribuciones, los colaboradores deberán declarar , de manera fehaciente, que poseen el permiso del archivo o repositorio donde se obtuvieron los documentos que se anexan al trabajo, cualquiera sea su formato (manuscritos inéditos, imágenes, archivos audiovisuales, etc.), permiso que los autoriza a publicarlos y reproducirlos, liberando a la revista y sus editores de toda responsabilidad o reclamo de terceros , los autores deben adherir a la licencia Creative Commons denominada “Atribución - No Comercial CC BY-NC-SA”, mediante la cual el autor permite copiar, reproducir, distribuir, comunicar públicamente la obra y generar obras derivadas, siempre y cuando se cite y reconozca al autor original. No se permite, sin embargo, utilizar la obra con fines comerciales.