Effect of dietary pastures on chemical composition of intramuscular fat of entire and castrated pig males reared outdoors in Uruguay | Efecto [de] las pasturas sobre la composición química de la grasa intramuscular de cerdos machos enteros y castrados producidos al aire libre en el Uruguay
2009
Echenique, A. | Capra, G. | Pardo, G. | Grompone, M.A. | Urruzola, N.
In order to determine the effect pasture has on intramuscular fat chemical composition, 48 pigs (24 entire and 24 castrated males), Large White x Landrace x Duroc cross, feeding ad libitum diet, were treated between 26 and 101 kg live weight with the following treatments: T1. Entire male without access to pasture. T2. Entire male with access to pasture. T3. Castrated male without access to pasture. T4. Castrated male with access to pasture. Subcutaneous and intramuscular fat content and fatty acids composition of the latter, were determined. Treatments with access to pasture (T2 and T4) showed a higher proportion of C18:3 omega 3 (P<0.01) and C18:0 (P<0.05) acids. Castrated males showed a higher proportion of C18:1 (P<0.05), while entire ones reached significantly higher proportions for C18:2 (P<0.01) and C20:4 (P<0.05). Interaction between male condition (entire/castrated) and pasture access (with/without) was verified for C18:2, C20:4 and 18:1 acids (P<0.01).
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