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Garitano I.,Diputacion Provincial de Teruel | Feliz de Vargas E.,Diputacion Provincial de Teruel | Olivares A.,Complutense University of Madrid | Daza A.,Technical University of Madrid
ITEA Informacion Tecnica Economica Agraria | Year: 2013

According to a factorial design that observed two commercial sire line of the Duroc breed: M (lean) and G (fat), and two genders (castrated males vs females), 43 Duroc x (Landrace x Large White) pigs were used. The growing-finishing period lasted from 22,50 to 125,16 kg of live weight and all animals were given the same feed during such period. The pigs from G line consumed more feed than those from M line. Castrated males had greater feed intake and average daily gain than females. The pigs from G line showed higher values of ham perimeter, fat thickness at the level of the 10th rib and Biceps femoris muscle. The fat thickness at the level of the 10th rib was higher in castrated males than in females. The rejected percentage of female carcasses in the slaughter-house was higher in females than in castrated males. The sire line had no effect on moisture, protein and intramuscular fat percentages of Longissimus dorsi muscle. However, the loin pH, measured 45 min after slaughter, was higher in pigs from M line than in those from G line. Castrated males had more intramuscular fat percentage than females. The pigs from G line had higher C10:0, C15:1, C16:0 and total saturated fatty acids, and lower C20:3 n-9 and C20:4 n-6 proportions than those from M line. Castrated males had higher C14:0, C16:1, C18:1n-9 and total monounsatureted fatty acids and lower C18:2 n-6 and total polyunsaturated and n-6 fatty acids proportions than females. The intramuscular fat percentage affected to C14:0, C16:0, C17:0, C18:1n-9, C18:2 n-6, C20:1, C20:4 n-6, total saturated, monounsaturated, polyunsaturated, n-6 proportions and Σ n-6/Σ n-3 and Σ POLI/ Σ SAT ratios detected in intramuscular fat. It is concluded that the use of a G sire line has not negative effect on productive performance, increases lightly the carcass fatness and saturates the intramuscular fat. Castrated males show more adequate carcasses than females to Teruel ham production. Source


Garitano I.,Diputacion Provincial de Teruel | Liebana C.,Consejo Regulador de la Denominacion de Origen Jamon de Teruel | de Vargas E.F.,Diputacion Provincial de Teruel | Moreno A.O.,Complutense University of Madrid | Daza A.,Technical University of Madrid
Italian Journal of Animal Science | Year: 2013

Duroc x (Landrace x Large White) barrows (n=60) and gilts (n=72), that consumed the same feed during the experimental period (25- 125 kg of live weight) were used. The duration of experimental period was 130 and 143 days for barrows and gilts respectively. The average daily gain and average daily feed intake were significantly higher (P<0.05) in barrows than in gilts, but no significant differences between sexes were observed for the feed conversion efficiency. The gender had not significant influence on carcass weight, carcass yield, carcass inner length, ham length and perimeter, but fat thickness at the level of Gluteus medius muscle and the last rib were significantly higher (P<0.05) in barrows than in gilts. The number of thighs removed per pig in the slaughterhouse was significantly higher in gilts than in barrows. The intramuscular fat (IMF) percentage in Longissimus dorsi muscle was significantly higher in barrows than in gilts. The C14:0, C16:0, C16:1, C18:1 n-9, C20:1 and MUFA proportions were significantly higher (P<0.05) in barrows than in gilts, while C10:0, C18:2 n-6, n-6 and PUFA proportions were higher in gilts than in barrows. Positive relations among IMF and C16:0, C18:0, C18:1 n-9, SFA and MUFA fatty acids were observed, whereas negative relations among IMF and C18:2 n-6 and PUFA fatty acids were detected. These results indicate that meat and fat quality was slightly better in barrows than in gilts. © I. Garitano et al., 2013. Source


According to a factorial experimental design that observed 2 genders x 4 feeding treatments, 32 Duroc x (Landrace x Large White) pigs, 16 castrated males and 16 intact females, intended to Teruel (Spain) ham acaproduction were used. The growing-finishing period lasted from the 32.6 to 126.9 kg. The feeding treatments applied were: substitution of conventional feed (control treatment with 15,72% crude protein and 0,91% lysine), by granulated barley (9,33% crude protein and 0,34% lysine) from 41 (barley 41 treatment), 63 (barley 63 treatment) or 83 (barley 83 treatment) days after the beginning of growing-finishing period to slaughter. The barley 41 and 63 treatments impaired significantly the average daily gain and feed conversion efficiency. The feeding treatment had not significant influence on most carcass characteristics. The castrated males had a significantly higher (P<0.05) fat thickness at level of the Gluteus medius muscle than intact females. In the Longissimus thoracis muscle granulated barley increased the percentage of intramuscular fat and the proportions of oleic and total monounsaturated fatty acids, whereas those of linoleic, total n-6 and polyunsaturated fatty acids were reduced. In the intramuscular fat of Longissimus thoracis the linoleic acid proportion was higher in females than in males. It is concluded that the substitution of conventional feed by granulated barley improved meat and intramuscular fat quality, but impaired productive performance in heavy pigs destined to Teruel ham production. Source

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