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Título : | Maternal metabolic demands caused by pregnancy and lactation: association with productivity and offspring phenotype in high-yielding dairy ewes |
Otros títulos : | |
Autor: | Pesantez Pacheco, Jose Luis Heras Molina, Ana Torres Rovira, Laura Sanz Fernández, María Victoria García Contreras, Consolación Vázquez Gómez, Marta Feyjoo, Pablo Cáceres, Elisa Millán Frías, Mateo Hernández, Fernando Martínez Ros, Paula González Martin, Juan Vicente González Bulnes, Antonio Astiz, Susana |
Correspondencia: | García Contreras, Consolación , astiz.susana@inia.es |
Palabras clave : | Milk yield Dairy sheep Pregnancy rank Age metabolic profile Birth weight Sex lamb |
Área de conocimiento FRASCATI amplio: | 4. Ciencias Agrícolas |
Área de conocimiento FRASCATI detallado: | 4.2.2 Ganaderia: Mascotas |
Área de conocimiento FRASCATI específico: | 4.2 Zootecnia y Ciencia de los Lácteos |
Área de conocimiento UNESCO amplio: | 08 - Agricultura, Silvicultura, Pesca y Veterinaria |
ÁArea de conocimiento UNESCO detallado: | 0841 - Veterinaria |
Área de conocimiento UNESCO específico: | 084 - Veterinaria |
Fecha de publicación : | 2019 |
Volumen: | Volumen 9, número 6 |
Fuente: | Animals |
metadata.dc.identifier.doi: | 10.3390/ani9060295 |
Tipo: | ARTÍCULO |
Abstract: | Pregnancy and lactation, especially when concurrent, create a rather metabolically demanding situation in dairy ruminants, but little is known about their e ects on o spring phenotype and milk yield. Here, we evaluated the impact of pregnancy and lactation on the metabolic traits and productive performance of Lacaune dairy sheep and their o spring. Productive performance was measured in terms of milk yield, body weight (BW), body condition score (BCS), and size. Productivity was assessed during mid-pregnancy (75 5 d) and late pregnancy (142 4 d) and at 52 5 d in the postpartum period. During pregnancy, high-yielding ewes had higher BW, BCS, plasma glucose, cholesterol, -OHB, and NEFA than low-yielding ewes, but lower levels of lactate and urea. High-yielding animals had lower BCS after lambing, but their lambs showed greater growth. Productivity during lactation was a ected by ewe age and parity: Mature ewes (but not maiden sheep) whose BCS increased steeply during pregnancy yielded more milk in the subsequent lactation than those whose BCS did not increase. Lamb BW and size were positively associated with milk yield in the subsequent lactation. Mature ewes had higher yields than maiden sheep, and mature ewes with multiple pregnancies produced more milk than those with singleton pregnancies. Ewes with male singleton pregnancies also showed higher yield than those with female singletons. |
Resumen : | Pregnancy and lactation, especially when concurrent, create a rather metabolically demanding situation in dairy ruminants, but little is known about their e ects on o spring phenotype and milk yield. Here, we evaluated the impact of pregnancy and lactation on the metabolic traits and productive performance of Lacaune dairy sheep and their o spring. Productive performance was measured in terms of milk yield, body weight (BW), body condition score (BCS), and size. Productivity was assessed during mid-pregnancy (75 5 d) and late pregnancy (142 4 d) and at 52 5 d in the postpartum period. During pregnancy, high-yielding ewes had higher BW, BCS, plasma glucose, cholesterol, -OHB, and NEFA than low-yielding ewes, but lower levels of lactate and urea. High-yielding animals had lower BCS after lambing, but their lambs showed greater growth. Productivity during lactation was a ected by ewe age and parity: Mature ewes (but not maiden sheep) whose BCS increased steeply during pregnancy yielded more milk in the subsequent lactation than those whose BCS did not increase. Lamb BW and size were positively associated with milk yield in the subsequent lactation. Mature ewes had higher yields than maiden sheep, and mature ewes with multiple pregnancies produced more milk than those with singleton pregnancies. Ewes with male singleton pregnancies also showed higher yield than those with female singletons. |
URI : | https://www.ncbi.nlm.nih.gov/pubmed/31151216 |
URI Fuente: | https://www.ncbi.nlm.nih.gov/pmc/issues/337911/ |
ISSN : | 2076-2615 |
Aparece en las colecciones: | Artículos
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