Producción de leche y comportamiento reproductivo de vacas cruzadas Holstein x Criollo Limonero
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| Format: | Artículo científico |
| Language: | en |
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Universidad del Zulia
2006
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| _version_ | 1876430361307643904 |
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| author | Gloria Contreras |
| author_facet | Gloria Contreras |
| contents | Producción de leche y comportamiento reproductivo de vacas cruzadas Holstein x Criollo Limonero Gloria Contreras Sunny Zambrano Antonio Landaeta Manuel Pirela Homero Cañas Tim Olson Veterinaria milk Criollo Holstein reproduction crossbreeding Records from ½ Criollo Limonero + ½ Holstein (F1) and backcrosses,¾ Criollo Limonero + ¼ Holstein (R) handled in aVenezuelan humid tropical forest zone were analyzed to comparetheir productive and reproductive performance. The analyzedvariables were: age at first calving (AFC), interval fromcalving to conception (ICC), calving interval (CI), services perconception (SC), gestation length (GL), calf birth weight(CBW), lactation length (LL), milk at 90 d (M90), total milk yield(TMY), and milk adjusted to 305 d (M305). No statistical differences(P > 0.05) were found between F1 and R for AFC (3.4 ±0.1 vs 3.2 ± 0.1 years), SC (1.6 ± 0.1 vs 1.7 ± 0.1), GL (both280d), CBW (both 34 ± 0.6 kg), M90 (919 ± 99 vs 813 ± 105kg), TMY (2093 ± 176 vs 1964 ± 176 kg) or for M305 (2424 ±146 vs 2430 ± 151kg), respectively. However, the F1 cows hadICC (258 ± 18 vs 173 ± 22 d; P < 0.004) and CI (577 ± 21 vs474 ± 25 d; P < 0.001) longer than R, respectively. Year ofbirth affected (P < 0.05) to AFC, (P < 0.03) to ICC, and(P < 0.01) to CI, M90, TMY, and M305. Environmental effectswere found for GL, M90, TMY, M305, and LL. Although no differencesbetween genotypes were found for milk yield, R cowshad better reproductive performance than the F1 cows 2006 artículo científico 0798-2259 https://www.redalyc.org/articulo.oa?id=95916210 en http://www.redalyc.org/revista.oa?id=959 Revista Científica application/pdf Universidad del Zulia Revista Científica (República Bolivariana de Venezuela) Num.2 Vol.XVI |
| format | Artículo científico |
| id | redalyc_95916210 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Universidad del Zulia |
| spellingShingle | Producción de leche y comportamiento reproductivo de vacas cruzadas Holstein x Criollo Limonero Gloria Contreras Veterinaria milk Criollo Holstein reproduction crossbreeding Producción de leche y comportamiento reproductivo de vacas cruzadas Holstein x Criollo Limonero Gloria Contreras Sunny Zambrano Antonio Landaeta Manuel Pirela Homero Cañas Tim Olson Veterinaria milk Criollo Holstein reproduction crossbreeding Records from ½ Criollo Limonero + ½ Holstein (F1) and backcrosses,¾ Criollo Limonero + ¼ Holstein (R) handled in aVenezuelan humid tropical forest zone were analyzed to comparetheir productive and reproductive performance. The analyzedvariables were: age at first calving (AFC), interval fromcalving to conception (ICC), calving interval (CI), services perconception (SC), gestation length (GL), calf birth weight(CBW), lactation length (LL), milk at 90 d (M90), total milk yield(TMY), and milk adjusted to 305 d (M305). No statistical differences(P > 0.05) were found between F1 and R for AFC (3.4 ±0.1 vs 3.2 ± 0.1 years), SC (1.6 ± 0.1 vs 1.7 ± 0.1), GL (both280d), CBW (both 34 ± 0.6 kg), M90 (919 ± 99 vs 813 ± 105kg), TMY (2093 ± 176 vs 1964 ± 176 kg) or for M305 (2424 ±146 vs 2430 ± 151kg), respectively. However, the F1 cows hadICC (258 ± 18 vs 173 ± 22 d; P < 0.004) and CI (577 ± 21 vs474 ± 25 d; P < 0.001) longer than R, respectively. Year ofbirth affected (P < 0.05) to AFC, (P < 0.03) to ICC, and(P < 0.01) to CI, M90, TMY, and M305. Environmental effectswere found for GL, M90, TMY, M305, and LL. Although no differencesbetween genotypes were found for milk yield, R cowshad better reproductive performance than the F1 cows 2006 artículo científico 0798-2259 https://www.redalyc.org/articulo.oa?id=95916210 en http://www.redalyc.org/revista.oa?id=959 Revista Científica application/pdf Universidad del Zulia Revista Científica (República Bolivariana de Venezuela) Num.2 Vol.XVI |
| title | Producción de leche y comportamiento reproductivo de vacas cruzadas Holstein x Criollo Limonero |
| topic | Veterinaria milk Criollo Holstein reproduction crossbreeding |
| url | https://www.redalyc.org/articulo.oa?id=95916210 |