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| Registros recuperados : 8 | |
| 7. |  | ENRIQUEZ DE LA FUENTE, B. A.; GALINA, C. S.; NAVARRO, R.; GUTIÉRREZ, A. C. Estimación de la época más propicia para un empadre estacional en ganado cebú bajo condiciones de trópico húmedo ln: Jornadas Uruguayas de Buiatría, 20.; Congreso Latinoamericano, 7., 1992, Paysandú, Uruguay Trabajos presentados. Paysandú (Uruguay): Centro Médico Veterinario de Paysandú, 1992. s.p.| Biblioteca(s): INIA Tacuarembó. |
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| 8. | | MENDOZA, A.; CAVESTANY, D.; ROIG, G.; ARITZIA, J.; PEREIRA, C.; LA MANNA, A.; CONTRERAS, D.A.; GALINA, C.S. Effect of restricted suckling on milk yield, composition and flow, udder health, and postpartum anoestrus in grazing Holstein cows. Livestock Science, v. 127, n. 1, p. 60-66, 2010.| Biblioteca(s): INIA La Estanzuela. |
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| Registros recuperados : 8 | |
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 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha actual : |
17/10/2014 |
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Actualizado : |
14/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
A - 2 |
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Autor : |
CAVESTANY, D.; GALINA, C.S. |
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Afiliación : |
DANIEL CAVESTANY BOCKING, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CS GALINA, Facultad de Medicina Veterinaria y Zootecnia. Universidad Nacional Autónoma de México. México, México. |
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Título : |
Evaluation of an artificial insemination programme in a seasonal breeding dairy systems through milk progesterone. |
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Fecha de publicación : |
2001 |
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Fuente / Imprenta : |
Reproduction in Domestic Animal, v.36.p.79-84, 2001. |
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DOI : |
10.1046/j.1439-0531.2001.00255.x |
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Idioma : |
Inglés |
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Contenido : |
Abstract
In order to evaluate an artificial insemination programme and reproductive efficiency of dairy herds in Uruguay, a survey was conducted with five dairy farms, utilizing a total of 768 lactating Holstein cows. Precision of oestrous detection was assessed by one milk progesterone sample taken on day of breeding and was 11.1%. Two additional samples taken at day 10 and 23 were used to confirm ovulation and early pregnancy. Accuracy of pregnancy estimation by milk progesterone was 70.4%. Reproductive efficiency was determined by the analysis of records. Average intervals from calving to first service were 101 days and to conception 132 days and these were affected by parity, body weight and body condition at calving, but not at breeding, or by milk production. Oestrous detection rates and pregnancy rates were 37.5 and 15.6%, respectively. It was concluded that losses in reproductive efficiency in dairy farms of Uruguay in a seasonal artificial insemination programme were mainly due to unobserved heats, rather than incorrect oestrous detection. |
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Palabras claves : |
EFICIENCIA REPRODUCTIVA; REBAÑOS LECHEROS; SISTEMAS LECHEROS. |
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Thesagro : |
INSEMINACIÓN ARTIFICIAL; LECHERÍA; PROGESTERONA; URUGUAY. |
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Asunto categoría : |
L01 Ganadería |
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Marc : |
LEADER 01765naa a2200229 a 4500
001 1051165
005 2019-10-14
008 2001 bl uuuu u00u1 u #d
024 7 $a10.1046/j.1439-0531.2001.00255.x$2DOI
100 1 $aCAVESTANY, D.
245 $aEvaluation of an artificial insemination programme in a seasonal breeding dairy systems through milk progesterone.
260 $c2001
520 $aAbstract In order to evaluate an artificial insemination programme and reproductive efficiency of dairy herds in Uruguay, a survey was conducted with five dairy farms, utilizing a total of 768 lactating Holstein cows. Precision of oestrous detection was assessed by one milk progesterone sample taken on day of breeding and was 11.1%. Two additional samples taken at day 10 and 23 were used to confirm ovulation and early pregnancy. Accuracy of pregnancy estimation by milk progesterone was 70.4%. Reproductive efficiency was determined by the analysis of records. Average intervals from calving to first service were 101 days and to conception 132 days and these were affected by parity, body weight and body condition at calving, but not at breeding, or by milk production. Oestrous detection rates and pregnancy rates were 37.5 and 15.6%, respectively. It was concluded that losses in reproductive efficiency in dairy farms of Uruguay in a seasonal artificial insemination programme were mainly due to unobserved heats, rather than incorrect oestrous detection.
650 $aINSEMINACIÓN ARTIFICIAL
650 $aLECHERÍA
650 $aPROGESTERONA
650 $aURUGUAY
653 $aEFICIENCIA REPRODUCTIVA
653 $aREBAÑOS LECHEROS
653 $aSISTEMAS LECHEROS
700 1 $aGALINA, C.S.
773 $tReproduction in Domestic Animal$gv.36.p.79-84, 2001.
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