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The effect of dietary linseed and lucerne supplementation on the oxidative stability of ostrich meat expressed by changes in concentrations of malondialdehyde (MDA) and glutathione (GSH), and in activity of superoxide dismutase (SOD), was studied. The feeding regimens were as follows: C - control group, L - 4% supplement of linseed, L-L45, L-L55, L-L65, and L-L75 - 4% supplement of linseed and supplement...
A double‐yolked egg that was laid by an 11‐month‐old bronze turkey hen on 2 April, 2013 was reported. The presented case of developing turkey twin embryos is the first ever described case for this species. The egg weighed 125 g and had 74.6 mm in length and 53.0 mm in width. The embryos died between the 23rd and 24th day of incubation. Both twin 1 and twin 2 were fully developed with body weights...
The aim of the study was to evaluate physical traits and fatty acids profile of ostrich meat enriched in n3 fatty acids as affected by refrigerated storage (for 14 days) and type of packaging (VAC vs. skin-packaging – SP). During refrigerated storage time drip loss after 7 days was significantly (P<0.001) higher in VAC as compared to SP samples. No significant differences in the SFA content in...
The aim of this study was to evaluate the effects of somatic cell count and the polymorphic form of β4-defensin on the concentration of free fatty acids (FFA) and physico-chemical characteristics of cow’s milk. The study was carried out on 120 Polish Holstein-Friesian Black and White dairy cows.The animals were maintained in a loose barn and fed with the TMR system according to the INRA norm. The...
Intensive poultry production is associated with poor animal welfare and thus is increasingly condemned by animal rights advocates. In order to meet the demands of poultry meat consumers, the market offers products sourced from chickens kept in alternative systems which ensure access to outdoor runs to improve their welfare. However, the choice of such a system may make it difficult for breeders to...
Celem pracy jest przegląd najnowszych wyników badań dotyczących wpływu różnych czynników na przebieg oksydacji lipidów w mięsie drobiowym. Ze względu na znaczny udział nienasyconych kwasów tłuszczowych jest ono szczególnie podatne na procesy utleniania tłuszczów. Oksydacja lipidów prowadzi do pogorszenia jakości produktu lub nawet jego zepsucia. Procesy jełczenia oksydacyjnego w mięsie mogą być wzmagane...
Celem badań było określenie wpływu płci na wybrane parametry tekstury i cechy sensoryczne mięśni piersiowych. Materiał stanowiły kurczęta średnio rosnące, mieszańce CCZk utrzymywane do 63. dnia życia. Określono skład podstawowy za pomocą spektrometrii w bliskiej podczerwieni, pH, wodochłonność, wyciek termiczny, wykonano pomiar parametrów barwy, przeprowadzono test przecinania oraz ocenę semi-konsumencką...
The study was conducted to examine slaughter parameters of three genotypes of meat type chicken: F1 crossbred derived from crossing of light hen of indigenous breed Greenleg Partridge with heavy meat type cocks, F2 crossbred being an effect of re-crossing obtained crossbred C x GP with meat type males and medium growing Hubbard JA 957, designed for a longer, 9-week production. Chicken were reared...
The aim of this study was to establish the effect of the genotype on performance of chickens. The experimental material included 1,320 slow-growing chickens with two genotypes Hubbard JA 957 - available on the Polish market hybrid with a declared slow growth and non-commercial hybrid CxGP, for creation of which a light native breed Greenleg Partridge hens were used. Chickens were maintained up to...
The experiment was conducted with 38,000 ROSS 308 chickens kept in two buildings of a poultry production farm. The chickens from the experimental group were receiving and addition of a herbal preparation Prisma Jet to a feed mixture. On day 42, the chickens were slaughtered and samples of their intestines were collected for microflora composition analyses and these of meat for qualitative analyses...
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