Protein retention, growth performance and carcass traits of individually housed immunocastrated male- and female- and surgically castrated male Iberian pigs fed diets of increasing amino acid concentration

Palma-Granados, P.; Lara, L.; Seiquer, Isabel; Lachica, M.; Fernández‐Fígares, I.; Haro, A.; Nieto, R.

doi:10.1016/j.animal.2021.100187

Cited by 7 publications

(15 citation statements)

References 34 publications

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“…Our study found that pig immunocastration resulted in similar sensory properties in dry-cured loin treatments, reducing the differences between the two sexes. These findings could be related to Palma-Granados et al’ [ 18 ] research on Iberian pigs’ backfat thickness at the last rib, where no differences were reported between IM and F, compared to CM, which had a higher fatness than the others. Differences in the fat content in cured pancetta from different sexes also showed differences in the sensory profile [ 19 ].…”

Section: Resultsmentioning

confidence: 52%

A Preliminary Evaluation of Sex and Dietary Field Pea Effects on Sensory Characteristics of Dry-Cured Loins

Argemí-Armengol,

Álvarez-Rodríguez,

Tor

et al. 2024

Animals

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Two of the main issues related to cured meat products are castration to avoid boar taint and the hefty reliance on soybean meal to feed pigs. However, data on the effects of immunocastration in pigs and alternative crop protein feeds on the sensory traits and consumers’ acceptance of dry-cured loin are still limited. A preliminary study was conducted on the effect of sex type (surgical castrated male pigs and immunocastrated male and female pigs, at approximately 140 kg in weight and 7 months of age) and animal diet (pea vs. soya) on dry-cured loins. The study involved a sensory evaluation of six treatments, with a 3 × 2 factorial design, conducted by trained panellists and untrained consumers in Spain (n = 126) and Portugal (n = 80). The consumers were also checked for their skatole sensitivity using a pure substance. The results showed that the pea-based diet was significantly different (p < 0.001) from the soy-based diet, as determined by a trained panel of surgically castrated male pigs, although the immunocastration treatments were not split. Dry-cured loin from immunocastrated male pigs fed with peas was considered tenderer and juicier (p < 0.05) than those fed soya-based diets. The untrained consumer panel scored higher on the sensory traits (flavour, juiciness, and overall liking) from the loin samples of surgically castrated male pigs fed a pea diet. All consumers scored similarly in boar taint detection. This study demonstrates the applicability of the pea-based diet for the feeding of pigs destined for cured meat and highlights immunocastration as a tool that does not compromise the skatole detection score.

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Section: Resultsmentioning

confidence: 52%

A Preliminary Evaluation of Sex and Dietary Field Pea Effects on Sensory Characteristics of Dry-Cured Loins

Argemí-Armengol,

Álvarez-Rodríguez,

Tor

et al. 2024

Animals

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“…Apart from the noticeable benefits in animal welfare, higher growth rates could be advantageous for autochthonous breeds—such as the Iberian pig—characterized by reduced lean growth capacity [ 17 ]. In a recent study comparing Iberian IC males and females and SC males pigs, we showed that IC males grew at a faster rate, and deposited more protein at a more efficient rate before the second vaccination against GnRH than SC males [ 18 ]. Iberian IC females presented similar growth to SC males and intermediate protein deposition efficiency [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

“…In a recent study comparing Iberian IC males and females and SC males pigs, we showed that IC males grew at a faster rate, and deposited more protein at a more efficient rate before the second vaccination against GnRH than SC males [ 18 ]. Iberian IC females presented similar growth to SC males and intermediate protein deposition efficiency [ 18 ]. Although differences in protein deposition and the efficiency of nitrogen retention between sex groups disappeared after the second vaccination, daily gain and feed efficiency were still higher in IC vs. SC males considering the whole fattening period.…”

Section: Introductionmentioning

confidence: 99%

“…Although differences in protein deposition and the efficiency of nitrogen retention between sex groups disappeared after the second vaccination, daily gain and feed efficiency were still higher in IC vs. SC males considering the whole fattening period. Furthermore, some lean components of the carcass (loin, sirloin and butt lean) and the carcass length were greater in IC vs. SC males, whereas kidney fat and some backfat thickness measurements were decreased, and backfat androstenone and skatole levels showed similar concentrations in IC and SC males at slaughter—5 weeks after the second vaccination [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

“…In the case of autochthonous pigs, we are not aware of studies assessing nitrogen metabolism and protein deposition in IC pigs apart from the aforementioned in Iberian pigs [ 18 ]. The purpose of the current study was to further characterize the performance and nitrogen metabolism differences observed between IC and SC pure Iberian pigs.…”

Section: Introductionmentioning

confidence: 99%

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Metabolic Profile of Growing Immune- and Surgically Castrated Iberian Pigs Fed Diets of Different Amino Acid Concentration

Fernández-Fígares,

Haro,

Lachica

et al. 2023

Animals

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The purpose of the current study was to further characterize the performance and nitrogen retention differences previously observed between immunocastrated (IC) and surgically castrated (SC) pure Iberian pigs. Fifty-four pigs were used (three sexes: IC males, IC females and SC males), fed three isoenergetic diets (160, 140 and 120 g CP/kg DM; six pigs/treatment combination) from 40 kg BW until slaughter (105 kg BW). Plasmatic post-absorptive metabolites and hormones, and backfat tissue composition were determined. The IC males showed a trend towards higher plasmatic creatinine (p = 0.06) and IGF-1 concentrations than SC males and IC females (p < 0.001). SC males showed a higher predisposition to carcass fatness and insulin resistance compared to IC males. Plasmatic isoleucine concentration was higher in IC and SC males compared to IC females (p < 0.01), and valine was greater in IC males compared to the rest of the pigs (p < 0.001). Total branched-chain amino acids (AA) were greater in IC males than in IC females (p < 0.01). Total plasmatic essential AA concentrations tended to be greater in IC males (p = 0.09). The present results support the increased performance and nitrogen retention capacity previously observed in IC male Iberian pigs compared to SC males and IC females, which can be attributed to increased anabolic capacity related with lean growth in Iberian IC males.

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The importance of pigs’ castration strategy on carbon footprint of feed intake, nitrogen and phosphorus efficiency under different management conditions

Broeke¹,

Cuyper²,

Kress³

et al. 2022

animal

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Protein retention, growth performance and carcass traits of individually housed immunocastrated male- and female- and surgically castrated male Iberian pigs fed diets of increasing amino acid concentration

Cited by 7 publications

References 34 publications

A Preliminary Evaluation of Sex and Dietary Field Pea Effects on Sensory Characteristics of Dry-Cured Loins

A Preliminary Evaluation of Sex and Dietary Field Pea Effects on Sensory Characteristics of Dry-Cured Loins

Metabolic Profile of Growing Immune- and Surgically Castrated Iberian Pigs Fed Diets of Different Amino Acid Concentration

The importance of pigs’ castration strategy on carbon footprint of feed intake, nitrogen and phosphorus efficiency under different management conditions

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