Volumen 21, Número 1 by Marcelo Del Campo
ABSTRACT
Objective. Determine the effect of Glycoline® on reproductive efficiency in high produci... more ABSTRACT
Objective. Determine the effect of Glycoline® on reproductive efficiency in high producing dairy cows. Materials and methods. 100 Holstein cows one month before delivery were selected. About 21 days before parturition they were put in a barn and were randomized in two groups: Glycoline® Group (GG, n=50), 300 g/day of Glycoline® for 21 days antepartum and 250 g/day of GlycoLine® over the following 21 days postpartum, and the Control Group (CG, n=50) with the same feed and silage ration as GG during the same period, but without the addition of Glycoline®. Events and reproductive variables of the cows were recorded for 202 days. The data were systematized, analyzed and statistically compared. Results. Comparisons were made between GG and CG respectively: Retained placenta (0.0 vs. 12.0%; p=0.027), downer cow syndrome (14.3 vs. 44.0%; p=0.002), uterine involution (64.6 vs. 36.4%; p=0.019 ), uterine infection (10.4% vs. 35.5%; p=0.006), no ovarian activity (6.3 vs. 25.6%; p=0.018), follicular cysts (0.0 vs. 18.2%, p = 0.002), luteal structures (25.0 vs. 9.3% ; p=0.058), mean estrus presentation (40.1% vs. 63.5%; p=0.033) inseminated females (79.6 vs. 68.0%; p=0.017), pregnancy rate at day 150 (57.1 vs. 46.0%; p≥0.317 ) and intervals (days): calving to 1st estrus (39.8 vs. 63.2; p≤0.006), calving to IA (62.4 vs. 87.5; p≤0.006) calving to conception (81.7 vs. 93.6; p≤0.006; p=0.103). Conclusions. Results suggest that dietary Glycoline® added in the transition period improves reproductive efficiency of high-producing dairy cows.
Papers by Marcelo Del Campo
Revista Colombiana de Ciencia Animal, 2019
En esta breve revisión de tema se resumió información relacionada con algunas funciones del cobre... more En esta breve revisión de tema se resumió información relacionada con algunas funciones del cobre en bovinos, sus requerimientos,
deficiencias, toxicidad, efectos sobre la reproducción y algunos métodos de suplementación. También se abordó la importancia del
cobre en la reproducción animal y algunas interrelaciones con otros minerales, síntomas generales de deficiencia y de intoxicación
en bovinos. Igualmente se comentó los requerimientos nutricionales del cobre y la concentración concomitante del hierro,
molibdeno y azufre. En conclusión se puede afirmar que un correcto balance mineral en la dieta animal, así como el aseguramiento
de un adecuado consumo, supone una mejora en las tasas de preñez, tasa de natalidad, aumento de la producción en leche, mejores
pesos al destete y ganancia de peso, mejorando la rentabilidad de los sistemas de producción bovina
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Volumen 21, Número 1 by Marcelo Del Campo
Objective. Determine the effect of Glycoline® on reproductive efficiency in high producing dairy cows. Materials and methods. 100 Holstein cows one month before delivery were selected. About 21 days before parturition they were put in a barn and were randomized in two groups: Glycoline® Group (GG, n=50), 300 g/day of Glycoline® for 21 days antepartum and 250 g/day of GlycoLine® over the following 21 days postpartum, and the Control Group (CG, n=50) with the same feed and silage ration as GG during the same period, but without the addition of Glycoline®. Events and reproductive variables of the cows were recorded for 202 days. The data were systematized, analyzed and statistically compared. Results. Comparisons were made between GG and CG respectively: Retained placenta (0.0 vs. 12.0%; p=0.027), downer cow syndrome (14.3 vs. 44.0%; p=0.002), uterine involution (64.6 vs. 36.4%; p=0.019 ), uterine infection (10.4% vs. 35.5%; p=0.006), no ovarian activity (6.3 vs. 25.6%; p=0.018), follicular cysts (0.0 vs. 18.2%, p = 0.002), luteal structures (25.0 vs. 9.3% ; p=0.058), mean estrus presentation (40.1% vs. 63.5%; p=0.033) inseminated females (79.6 vs. 68.0%; p=0.017), pregnancy rate at day 150 (57.1 vs. 46.0%; p≥0.317 ) and intervals (days): calving to 1st estrus (39.8 vs. 63.2; p≤0.006), calving to IA (62.4 vs. 87.5; p≤0.006) calving to conception (81.7 vs. 93.6; p≤0.006; p=0.103). Conclusions. Results suggest that dietary Glycoline® added in the transition period improves reproductive efficiency of high-producing dairy cows.
Papers by Marcelo Del Campo
deficiencias, toxicidad, efectos sobre la reproducción y algunos métodos de suplementación. También se abordó la importancia del
cobre en la reproducción animal y algunas interrelaciones con otros minerales, síntomas generales de deficiencia y de intoxicación
en bovinos. Igualmente se comentó los requerimientos nutricionales del cobre y la concentración concomitante del hierro,
molibdeno y azufre. En conclusión se puede afirmar que un correcto balance mineral en la dieta animal, así como el aseguramiento
de un adecuado consumo, supone una mejora en las tasas de preñez, tasa de natalidad, aumento de la producción en leche, mejores
pesos al destete y ganancia de peso, mejorando la rentabilidad de los sistemas de producción bovina
Objective. Determine the effect of Glycoline® on reproductive efficiency in high producing dairy cows. Materials and methods. 100 Holstein cows one month before delivery were selected. About 21 days before parturition they were put in a barn and were randomized in two groups: Glycoline® Group (GG, n=50), 300 g/day of Glycoline® for 21 days antepartum and 250 g/day of GlycoLine® over the following 21 days postpartum, and the Control Group (CG, n=50) with the same feed and silage ration as GG during the same period, but without the addition of Glycoline®. Events and reproductive variables of the cows were recorded for 202 days. The data were systematized, analyzed and statistically compared. Results. Comparisons were made between GG and CG respectively: Retained placenta (0.0 vs. 12.0%; p=0.027), downer cow syndrome (14.3 vs. 44.0%; p=0.002), uterine involution (64.6 vs. 36.4%; p=0.019 ), uterine infection (10.4% vs. 35.5%; p=0.006), no ovarian activity (6.3 vs. 25.6%; p=0.018), follicular cysts (0.0 vs. 18.2%, p = 0.002), luteal structures (25.0 vs. 9.3% ; p=0.058), mean estrus presentation (40.1% vs. 63.5%; p=0.033) inseminated females (79.6 vs. 68.0%; p=0.017), pregnancy rate at day 150 (57.1 vs. 46.0%; p≥0.317 ) and intervals (days): calving to 1st estrus (39.8 vs. 63.2; p≤0.006), calving to IA (62.4 vs. 87.5; p≤0.006) calving to conception (81.7 vs. 93.6; p≤0.006; p=0.103). Conclusions. Results suggest that dietary Glycoline® added in the transition period improves reproductive efficiency of high-producing dairy cows.
deficiencias, toxicidad, efectos sobre la reproducción y algunos métodos de suplementación. También se abordó la importancia del
cobre en la reproducción animal y algunas interrelaciones con otros minerales, síntomas generales de deficiencia y de intoxicación
en bovinos. Igualmente se comentó los requerimientos nutricionales del cobre y la concentración concomitante del hierro,
molibdeno y azufre. En conclusión se puede afirmar que un correcto balance mineral en la dieta animal, así como el aseguramiento
de un adecuado consumo, supone una mejora en las tasas de preñez, tasa de natalidad, aumento de la producción en leche, mejores
pesos al destete y ganancia de peso, mejorando la rentabilidad de los sistemas de producción bovina