Carcass characteristics and meat quality of heavy swine fed different citrus pulp levels

Abstract

An assay with 36 swine initially weighting 83.7±5.1kg body weight (BW) was carried out to evaluate the effects of the use of different dietary citrus pulp levels, 0, 10%, 20%, and 30%, upon digestive organs weights, carcass characteristics, and meat quality of animals subjected to qualitative feed restriction program, and slaughtered at 130kg BW. Linear response (P<0.05) on the weight of stomach, colon, and liver were observed. Negative linear responses (P<0.05) on final BW and carcass yield relative to citrus pulp addition to the diet were observed. Although a negative linear effect (P<0.05) of increasing dietary levels of citrus pulp had been observed on ham weight, yield of this by product was not affected (P>0.05). Higher levels of citrus pulp neither decreased backfat thickness nor increased amount of lean meat, indicative that qualitative feed restriction was not efficient. Positive linear effect (P<0.05) on pH measured 24 hours after slaughter and negative linear effect (P<0.05) on color characteristics as function of citrus pulp dietary levels were verified. Citrus pulp addition in qualitative feed restriction program may not be effective. As no deleterious effects upon meat qualities were observed, citrus pulp can be used as an alternative feedstuff for finishing swine.

Carcass and meat quality traits of Celta heavy pigs. Effect of the inclusion of chestnuts in the finishing diet

“…The large contribution of the head to the carcass weight (around 8.5%) is outstanding and conf irms previous findings (Sánchez et al, 2000); the values of this ratio reported for other pig breeds vary at around 5% (García-Macías et al, 1996;Franci et al, 2003). Values for ham contribution to the total weight were lower than those reported for improved breeds (Blasco et al, 1994;García-Macías et al, 1996;Flores-Rondón et al, 2009;Watanabe et al, 2010); the same applies to the contribution of shoulder to the total weight (Flores-Rondón et al, 2009). The ratio ham/shoulder (around 1.5) indicates that Celta breed has very different characteristics from the desirable "four ham" type of pig.…”

“…However, values were lower than those reported in literature for heavy pigs of Landrace and Large White breeds (Lukic et al, 2010;Watanabe et al, 2010).…”

“…The subcutaneous fat thickness was notably higher than that reported in previous studies (Blasco et al, 1994;Ellis et al, 1996;García-Macías et al, 1996;Weatherup et al, 1998;Flores-Rondón et al, 2009;Watanabe et al, 2010). The main reason for this finding is probably the high slaughtering weight, as the thickness of back fat is known to increase with live weight (García-Macías et al, 1996;Weatherup et al, 1998); the back fat thickness is estimated to be 1.5-2.5 mm for each 10 kg live weight (Weatherup et al, Table 5.…”

“…Paiva-Martins et al (2009) reported that the use of 5 or 10% of olive leaves in the diet decreased the carcass weight and yield, the back fat thickness and the area of the Longissimus muscle. More recently, Watanabe et al (2010) observed negative linear responses on final live weight, carcass yield and ham weight values as the inclusion of citrus pulp level in the diet was increased from 0% to 30% in pigs slaughtered at a live weight of 130 kg. The present results are consistent with those of Coutron-Gambotti et al (1998), who studied the effects of substituting a concentrated diet with chestnuts in Corsican pig and did not observe any effect on the live weight, carcass weight, carcass yield or thickness of subcutaneous adipose tissue.…”

Qualidade da carne de suínos com uso de glicerina na alimentação

“…3). Esses resultados indicam que, independentemente do nível de utilização da glicerina, esta não promoveu redução, principalmente da intensidade de amarelo, na carne, como preconizado por alguns autores com uso de outros ingredientes em substituição ao milho (Fraga et al, 2008;Watanabe et al, 2010). Para a intensidade de vermelho (a*), houve interação do nível de glicerina e sexo, com efeito significativo para os machos castrados (Fig.…”