Alvarado-Narváez, Angélica M.

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    Efecto de un sistema de enfriamiento conductivo estratégico sobre la tasa de preñez bajo un tratamiento modificado de OvSynch en ganado lechero bajo estrés por calor
    (2015) Alvarado-Narváez, Angélica M.; Fernández Van Cleve, John A.; College of Agricultural Sciences; Curbelo Rodríguez, Jaime E.; Sánchez Rodríguez, Héctor L.; Latorre Acevedo, José R.; Department of Animal Science; Padilla Vélez, David
    This study evaluated the effects of a strategic conductive cooling system (SCCS) on the pregnancy rate of dairy cattle in an ovulation synchronization program during two seasons, autumn and summer. Cows were distributed according to milk production, days in milk, lactation number, weight and type of hair (slick or normal), while heifers were grouped by weight and hair type. All animals underwent an altered OvSynch synchronization protocol and assigned to one of two groups: SCCS and no-SCCS. After the synchronization protocol, all animals were inseminated at fixed time. Pregnancy confirmation was made 32 days following insemination. No significant differences in pregnancy rates were observed among seasons with 39 and 29% pregnancy rate in autumn and summer, respectively. No significant differences in pregnancy rates between SCCS and control group were observed (36 versus 30%, respectively). Heifers showed a higher pregnancy rate (P = 0.0013) than cows (49 versus 17%, respectively).
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    Efecto de un sistema de enfrentamiento conductivo estratégico sobre la tasa de preñez bajo un trtatmiento modificado de OvSynch en ganado lechero bajo estrés por calor
    (2015) Alvarado-Narváez, Angélica M.; Curbelo Rodríguez, Jaime E.; College of Agricultural Sciences; Sánchez Rodríguez, Héctor L.; Fernández Van Cleve, John A.; Latorre Acevedo, José R.; Department of Animal Science; Padilla Vélez, David
    This study evaluated the effects of a strategic conductive cooling system (SCCS) on the pregnancy rate of dairy cattle in an ovulation synchronization program during two seasons, autumn and summer. Cows were distributed according to milk production, days in milk, lactation number, weight and type of hair (slick or normal), while heifers were grouped by weight and hair type. All animals underwent an altered OvSynch synchronization protocol and assigned to one of two groups: SCCS and no-SCCS. After the synchronization protocol, all animals were inseminated at fixed time. Pregnancy confirmation was made 32 days following insemination. No significant differences in pregnancy rates were observed among seasons with 39 and 29% pregnancy rate in autumn and summer, respectively. No significant differences in pregnancy rates between SCCS and control group were observed (36 versus 30%, respectively). Heifers showed a higher pregnancy rate (P = 0.0013) than cows (49 versus 17%, respectively).