Physicochemical, microbiological and sensory attributes of fresh and cold-stored (5–15 days) fermented zabadi from goat’s milk were analysed and then compared with those of cow’s milk. Results indicated that the gross nutrients of fresh goat’s milk changed after processing. Zabadi fermentation significantly decreased the lactose content and pH of the fresh milk in both zabadi types. Cow-milk zabadi was more viscous than goat-milk zabadi. Cold storage resulted in significant changes in gross composition of both zabadi types, in particular after 10 days of storage. Lactose and pH decreased further if the storage period was prolonged. Lactobacillus spp. and Streptococcus spp. are the main active organisms in goat- and cow-milk zabadi. The number of total bacteria and yeast increased significantly within 10 days of storage, decreasing thereafter. Staphylococcus aureus and Salmonella spp. were absent. Coliforms and faecal coliforms were detected in both zabadi types; however, they disappeared after 5 days of storage. Goat-milk zabadi showed significantly lower sensory scores than cow-milk zabadi. Both zabadi types can withstand storage to a maximum of 10 days, with the sensory scores decreasing thereafter.

No abstract

No abstract

No abstract

Glutathione peroxidase (GSHPx) activity was investigated in the liver, red blood cells (RBC) and blood plasma (BP) of different chicken genotypes. Signifi cant differences among genotypes and age groups were found in liver GSHPx activity during embryonic development and in day-old chickens. Breed, sex and age effects were found in RBC and BP from one day of age until peak egg production. A negative correlation was found between embryo liver GSHPx activity and egg weight (-0.24; P≤0.01), between RBC and BP GSHPx activity and body weight (-0.32 and -0.44; P≤0.01), and between liver and RBC GSHPx activity (-0.54; P≤0.01), while positive correlations were demonstrated between liver and BP (0.66; P≤0.01) and BP and RBC (0.32; P≤0.01) GSHPx activity. In conclusion, variation in GSHPx activities in different chicken breeds during development suggests that it is genetically regulated. This fi nding indicates that GSHPx activity may be useful in selection.

Egypt apanese quail (Coturnix japonica) are an economically important species valued for its egg, meat, and as a biological animal model in Asia, Europe, the most popular molecular markers were the RAPD, described first by Welsh and McClelland (1990). RAPD were commonly used for the genetic mapping and selection criteria for characters in poultry.DNA fingerprint patterns (Piao et al., 2003) were characterized in two lines of Japanese quail that are differentiated by large and small body sizes and developed by selection. RAPD methods have been used to detect specific markers, genetic similarity in Japanese quail lines (Sharma et al., 2000;Karabağ and Balcioğlub, 2010). Mansour et al. (2010) investigated the variations within four phenotypes of Japanese quail using RAPD and ISSR markers. The second widely used DNA marker is based on MS, SSR which are efficient for estimating genetic variation between populations of the same species. The modern genetic tools developed specifically for quail analyses were MS J

No abstract

No abstract