The effect of ageing was evaluated on quality parameters(pH,electrical conductivity(EC),osmolality,drip loss(DL)and cooking loss(CL)),proteins,fat and 25-hydroxyvitamin D(25-OH-D)total levels and antioxidant status(ma...The effect of ageing was evaluated on quality parameters(pH,electrical conductivity(EC),osmolality,drip loss(DL)and cooking loss(CL)),proteins,fat and 25-hydroxyvitamin D(25-OH-D)total levels and antioxidant status(malondialdehyde(MDA)and catalase(CAT)activity)in meat of camels during storage at 4±1°C.Samples were taken from the brachial triceps muscle(triceps barchii)and were stored at 4±1°C for 10 d.Quality parameters,chemical composition and antioxidant status were assessed at 3 h and 24 h postslaughter and 5,7 and 10 d postmortem during cold storage.CAT activity significantly decreased while osmolality,EC,DL,CL and MDA contents significantly increased,from the 5th or 7th postmortem day of cold storage of the camel meat.However,proteins,lipids and 25-OH-D total contents showed no significant differences during all period of ageing.In conclusion,in the dromedary camel,ageing time of triceps muscle influenced significantly its quality characteristics and antioxidant status from the 5th or 7th postmortem day of refrigerated storage,without any variation of proteins,fat and 25-OH-D contents.展开更多
The purpose of this study was to determine the effects of road transportation under heat conditions on some haematological [Ht （haematocrit）, blood cells count and EOF （erythrocytes osmotic fragility）] and physiol...The purpose of this study was to determine the effects of road transportation under heat conditions on some haematological [Ht （haematocrit）, blood cells count and EOF （erythrocytes osmotic fragility）] and physiological [Tr （rectal temperature）, HR （heart） and RR （respiratory rates）, and circulating levels of Cor （cortisol）, Glu （glucose） and minerals] parameters in Moroccan dromedary camels. The animals were subjected to road transportation stressor for 2 h by truck during the hot-dry season. Blood samples were collected before loading and transport, and at the end of transport. Transportation induced a significant increase （P 〈 0.05） of erythrocytes count, Ht, EOF, Tr, HR and RR by comparison to values observed before transportation. The same stress conditions induced a significant increase （P 〈 0.05） of plasma Cor （ng/mL） and blood Glu （mM） （220 ± 30 vs. 137 ± 20, 9.7 ± 1.2 vs. 6.4 ± 1. 1 respectively） and a significant decrease （P 〈 0.05） of plasma magnesium （mM） （0.5 ± 0.1 vs. 0.9 ± 0.1） comparatively to pre-transportation values. These results indicate that road transportation associated to heat may be considered as a potent stressor which is able to induce several cellular alterations in camels. Further studies of an eventual protective role of vitamin C against haemolysis induced by transportation stress in camel are needed.展开更多
文摘The effect of ageing was evaluated on quality parameters(pH,electrical conductivity(EC),osmolality,drip loss(DL)and cooking loss(CL)),proteins,fat and 25-hydroxyvitamin D(25-OH-D)total levels and antioxidant status(malondialdehyde(MDA)and catalase(CAT)activity)in meat of camels during storage at 4±1°C.Samples were taken from the brachial triceps muscle(triceps barchii)and were stored at 4±1°C for 10 d.Quality parameters,chemical composition and antioxidant status were assessed at 3 h and 24 h postslaughter and 5,7 and 10 d postmortem during cold storage.CAT activity significantly decreased while osmolality,EC,DL,CL and MDA contents significantly increased,from the 5th or 7th postmortem day of cold storage of the camel meat.However,proteins,lipids and 25-OH-D total contents showed no significant differences during all period of ageing.In conclusion,in the dromedary camel,ageing time of triceps muscle influenced significantly its quality characteristics and antioxidant status from the 5th or 7th postmortem day of refrigerated storage,without any variation of proteins,fat and 25-OH-D contents.
文摘The purpose of this study was to determine the effects of road transportation under heat conditions on some haematological [Ht （haematocrit）, blood cells count and EOF （erythrocytes osmotic fragility）] and physiological [Tr （rectal temperature）, HR （heart） and RR （respiratory rates）, and circulating levels of Cor （cortisol）, Glu （glucose） and minerals] parameters in Moroccan dromedary camels. The animals were subjected to road transportation stressor for 2 h by truck during the hot-dry season. Blood samples were collected before loading and transport, and at the end of transport. Transportation induced a significant increase （P 〈 0.05） of erythrocytes count, Ht, EOF, Tr, HR and RR by comparison to values observed before transportation. The same stress conditions induced a significant increase （P 〈 0.05） of plasma Cor （ng/mL） and blood Glu （mM） （220 ± 30 vs. 137 ± 20, 9.7 ± 1.2 vs. 6.4 ± 1. 1 respectively） and a significant decrease （P 〈 0.05） of plasma magnesium （mM） （0.5 ± 0.1 vs. 0.9 ± 0.1） comparatively to pre-transportation values. These results indicate that road transportation associated to heat may be considered as a potent stressor which is able to induce several cellular alterations in camels. Further studies of an eventual protective role of vitamin C against haemolysis induced by transportation stress in camel are needed.
