Efecto del sistema de alimentación de la oveja durante la lactación sobre los contenidos de vitaminas liposolubles en los tejidos del cordero categoría ternasco
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Date
2017
Authors
Rufino Moya, Pablo JoséLobón Ascaso, Sandra
Blanco Alibés, Mireia
Bertolín Pardos, Juan Ramón
Joy Torrens, Margalida
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Abstract
La alfalfa (Medicago saliva L.) y la esparceta (Onobrychis viciifolia Scop.) pueden ser
pastadas por ovino como alternativa a la alimentación estabulada con una mezcla completa.
Ambas leguminosas tienen un alto valor nutritivo y una gran capacidad productiva, pero
difieren en la presencia de taninos condensados, que tiene la esparceta. La alimentación
con forrajes frescos incrementa la concentración de vitaminC!s liposolubles en los tejidos y en
la leche frente a la alimentación con concentrado en ovino (Alvarez et al., 2014; Valdivieso et
al., 2015). Además, los taninos condensados aumentan la concentración de vitaminas
liposolubles en el suero de terneros (Shabtay et al., 2008), lo que podrían afectar a la
deposición de dichas vitaminas en los tejidos, sin embargo dicha acción no se ha estudiado
en ovino. Los corderos lactantes adquieren principalmente dichas vitaminas liposolubles a
través de la leche materna (Radu et al., 2015). Pero, el cebo posterior se realiza con paja y
concentrado ad libitum, pobres en dichas vitaminas, que reduce su concentración en los
tejidos (Prache et al., 2003). El objetivo del ensayo fue estudiar el efecto del sistema de
alimentación durante la lactación (Alfalfa vs. Esparceta vs. Mezcla completa) sobre la
concentración de vitaminas liposolubles en distintos tejidos de corderos ligeros tras ser
destetados y cebados con concentrado y paja.
The effects of the dam's feeding system during suckling on the canten! of carotenoids, liposoluble vitamins (retino! and tocopherols) in the tissues (muscle, liver and fat) of light lambs were assessed. Three feeding systems during lactation were considered: ewe-lamb pairs grazed alfalfa, ewe-lamb pairs grazed sainfoin and ewe-lamb pairs were stalled and dams were fed a total mixed ration (TMR). Alter weaning (42±2 days), lambs were fed a fattening concentrate until 22-24 kg, when they were slaughtered. Carotenoids and tocopherol contents were analyzed in feedstuffs and animal tissues by UPLC analyses. Sainfoin and alfalfa had greater carotenoids and a-tocopherol contents !han TMR. The dam's feeding system affected a-tocopherol canten! in the muscle, presenting !he greatest canten! Sainfoin, intermediate Alfalfa and !he lowest TMR lambs (P<0.001). The dam's feeding system affected retino! canten! in the liver (P<0.01), presenting Sainfoin lambs greater content than Alfalfa and TMR lambs. The dam's feeding system affected retino! and atocopherol in both adipose tissues of the lamb (P<0.001 ). Sainfoin and Alfalfa lambs had greater contents than TMR lambs in both adipose tissues. In conclusion, grazing during lactation increased contents of liposoluble vitamins, but differently in the tissues of the lamb. More research is needed to propase them as biomarkers of forage feeding.
The effects of the dam's feeding system during suckling on the canten! of carotenoids, liposoluble vitamins (retino! and tocopherols) in the tissues (muscle, liver and fat) of light lambs were assessed. Three feeding systems during lactation were considered: ewe-lamb pairs grazed alfalfa, ewe-lamb pairs grazed sainfoin and ewe-lamb pairs were stalled and dams were fed a total mixed ration (TMR). Alter weaning (42±2 days), lambs were fed a fattening concentrate until 22-24 kg, when they were slaughtered. Carotenoids and tocopherol contents were analyzed in feedstuffs and animal tissues by UPLC analyses. Sainfoin and alfalfa had greater carotenoids and a-tocopherol contents !han TMR. The dam's feeding system affected a-tocopherol canten! in the muscle, presenting !he greatest canten! Sainfoin, intermediate Alfalfa and !he lowest TMR lambs (P<0.001). The dam's feeding system affected retino! canten! in the liver (P<0.01), presenting Sainfoin lambs greater content than Alfalfa and TMR lambs. The dam's feeding system affected retino! and atocopherol in both adipose tissues of the lamb (P<0.001 ). Sainfoin and Alfalfa lambs had greater contents than TMR lambs in both adipose tissues. In conclusion, grazing during lactation increased contents of liposoluble vitamins, but differently in the tissues of the lamb. More research is needed to propase them as biomarkers of forage feeding.
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Bibliographic citation
XVII Jornadas sobre Producción Animal: Zaragoza, 30 y 31 de mayo de 2017, p. 591-593
AGROVOC subjects
OvinosAlimentación de los animales
Onobrychis viciifolia
Medicago sativa
Other field subjects
Producción y sanidad animalSponsorship
Financiado por INIA (RTA 2012-00080-00-00). P.J. Rufino-Moya, S.
Lobón y M. Blanco con contrato financiado por INIA, DGA e INIA-FSE, respectivamente. Los
autores quieren agradecer su trabajo y dedicación al personal del CITA. J.R. Bertolín con
contrato financiado por MINECO-empleo joven.