Influence of Pre-Slaughter Capture Chase Duration Stress on Carcass and Meat Quality of Indigenous Chicken Reared Under Traditional System in Benin.

Abstract

The current study aims to evaluate the influence of the pre-slaughter capture chase duration stress on carcass and meat quality in local chicken of Benin. Sixty-four chickens of 6 to 7 months old divided into 4 flocks of 8 males and 8 females each reared under traditional system were used. Chickens of first group were not chased before slaughter. Whereas, chickens of the second, the third and the fourth groups were slaughtered respectively after 5 minutes, 10 minutes and 15 minutes of chase by 3 persons. Carcass and meat quality was evaluated. Carcass quality traits didn't vary according to the preslaughter capture chase stress. The two longer capture chase duration chickens had the lower breast pH at the first measure time. But it was higher in those chased during 15 minutes at 48 hours after slaughter. Control birds showed lower pH than the 5 minutes stressed one at 1 and at 12 hours. The thigh pH values were higher with the most chased chickens. However, drip loss at 24 hours after slaughter didn't vary. The breast lightness was higher in the most chased on the slaughter day. Meanwhile, the breast yellow index was higher with chickens of 15 minutes of chase. But no difference was found for the meat red index values of the four flocks. The meat flavor, juiciness, tenderness and global acceptance didn't vary according to the preslaughter capture chase stress. In sum, the sensory and technological meat qualities of local chickens decrease more with the capture chase duration stress.Copy Right, IJAR, 2017,. All rights reserved.

Influence of age at slaughter and sex on carcass characteristics and technological and sensory quality of Goliath chicken meat

“…This result confirms the dimorphism between males and females, males are taller and larger than females. Similar results had been reported in several avian species in different studies conducted on local poultry populations of the species Gallus gallus, such as the effect of sex on the weights of the different components of the carcass [1,10,14,15]. Other authors have shown that in local chicken breeds, the females generally grew slower than males and rarely reached 1 kg of live weight at 20 weeks of age compared to the 1.2 kg of the roosters [16][17][18][19].…”

“…In addition, this study showed that the wishbone of females had a higher water-holding capacity than that of males. However, other studies did not find any difference in the water-holding capacity by sex of local chickens [ 14 ].…”

“…[ 23 ]. In contrast, higher pH values in males than in females of local chickens from South Benin have been repeatedly recorded [ 1 , 14 , 15 ]. Similarly, the pH of the wishbone in males was significantly higher than that in females was noted in Muscovy ducks [ 21 ].…”

“…Poultry farming is the first choice for national production intensification in Benin because of its short production cycle. Among the poultry species, local chickens provide the most meat for Beninese consumption [ 1 ]. The global chicken meat production was estimated to be 114,267 tons in 2018 [ 2 ].…”

Understanding the Determination of Meat Quality Using Biochemical Characteristics of the Muscle: Stress at Slaughter and Other Missing Keys

“…In poultry, transport, lairage and shackling are major causes of stress. With increasing transport duration, early postmortem pH decline is increasingly slower, whereas ultimate pH is higher [ 45 , 67 , 68 ]. During transport, the potential stressors include vibrations, truck movements, impacts, social disturbances and noise [ 69 ].…”