Forty-eight Polish Landrace pigs (initially 32.43 ± 0.70 kg live weight) were assigned to a 2 x 2 x 2 factorial arrangement in order to assess the effects of the rearing system (outdoor versus indoor), diet (with corn grain silage versus without corn grain silage) and gender (barrows versus gilts) on performance, carcass traits, meat quality and intramuscular collagen (IMC) characteristics. During the trial period of fourteen weeks, each group was housed in a pen of 12 m2, and the outdoor reared animals had access to a paddock of 24 m2. Pigs were fed a diet computed according to standard requirements and supplied on a basis of 9% of metabolic weight (live weight0.75). Pigs were slaughtered at 110.69 ± 0.85 kg. The rearing system did not significantly affect growth, hot and cold dressing, meat quality of m. longissimus lumborum or IMC. Outdoor pigs had less (P < 0.05) backfat thickness, slightly higher (P = 0.082) lean percent and a meat with lower pH and fat than the conventional system. In light of these results, alternative pig rearing systems with indoor space and free outdoor access could be an interesting production system for the pig. Compared to the pigs’ fed diets with corn grain silage, those fed diets without corn had higher (P < 0.05) lean, ham percentage and IMC content, lower (P < 0.05) neck percentage but similar main tissue components of the ham and meat quality. Compared to the gilts, barrows were fatter and showed a meat with different physic-chemical traits, that was slightly more tender and had similar IMC properties.

Influence of rearing system, diet and gender on performance, carcass traits and meat quality of Polish Landrace pigs.

MAIORANO, Giuseppe;
2013

Abstract

Forty-eight Polish Landrace pigs (initially 32.43 ± 0.70 kg live weight) were assigned to a 2 x 2 x 2 factorial arrangement in order to assess the effects of the rearing system (outdoor versus indoor), diet (with corn grain silage versus without corn grain silage) and gender (barrows versus gilts) on performance, carcass traits, meat quality and intramuscular collagen (IMC) characteristics. During the trial period of fourteen weeks, each group was housed in a pen of 12 m2, and the outdoor reared animals had access to a paddock of 24 m2. Pigs were fed a diet computed according to standard requirements and supplied on a basis of 9% of metabolic weight (live weight0.75). Pigs were slaughtered at 110.69 ± 0.85 kg. The rearing system did not significantly affect growth, hot and cold dressing, meat quality of m. longissimus lumborum or IMC. Outdoor pigs had less (P < 0.05) backfat thickness, slightly higher (P = 0.082) lean percent and a meat with lower pH and fat than the conventional system. In light of these results, alternative pig rearing systems with indoor space and free outdoor access could be an interesting production system for the pig. Compared to the pigs’ fed diets with corn grain silage, those fed diets without corn had higher (P < 0.05) lean, ham percentage and IMC content, lower (P < 0.05) neck percentage but similar main tissue components of the ham and meat quality. Compared to the gilts, barrows were fatter and showed a meat with different physic-chemical traits, that was slightly more tender and had similar IMC properties.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11695/2453
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