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Wyświetlanie 1-10 z 68
Tytuł:
Metabolic and tissular effects of artemisinin supplemented diets in broiler chicken
Autorzy:
Gyӧrke, A.
Pop, L.M.
Mircean, M.
Kalmár, Z.
Tăbăran, A.F.
Paștiu, A.I.
Dumitrache, M.O.
Magdaș, C.
Balea, A.
Bărburaș, D.
Mircean, V.
Cozma, V.
Powiązania:
https://bibliotekanauki.pl/articles/2087546.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
artemisinin
chickens
toxicity
biochemistry
histology
Źródło:
Polish Journal of Veterinary Sciences; 2019, 2; 297-304
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bioavailability of organic and inorganic sources of chromium in broiler chicken feeds
Autorzy:
Król, B.
Słupczyńska, M.
Kinal, S.
Bodarski, R.
Tronina, W.
Mońka, M.
Powiązania:
https://bibliotekanauki.pl/articles/960081.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
Chromium bioavailability in animals depends on their species, age and physiological state as well as fodder composition and Cr source. However, inorganic forms of chromium are poorly absorbed compared to organic compounds. One hundred and eighty Isa Vedetta chickens were assigned to 2 groups, with 3 replications of 30 birds each, to determine the effects of different Cr source on its bioavailability, growth performance and carcass characteristics of broiler chickens. All chickens were fed with commercial standard concentrate mixtures (starter, grower and finisher) depending on the birds’ age. The dietary treatments consisted of a basal diet supplemented with chromium chloride (control group) or chromium-enriched yeast (experimental group). The treatments were supplemented with chromium so as to provide the same amount of pure chromium in both groups. Mortality, body weight and feed conversion rate were measured. On the 42nd day, 6 cockerels and 6 hens from each group were randomly selected, decapitated, blood samples were taken and carcass composition was determined. The bioavailability of Cr was evaluated by the level of that trace element in mentioned above soft and hard tissues. Furthermore, dry matter, crude protein and crude fat in muscles were determined and sensory analyses of quality muscles were carried out. Growth performance, feed conversion ratio and mortality were unaffected by treatments. There was no Cr source effect on outcomes of post-slaughter analyses. Cr enriched yeast effected the decrease (P ≤ 0.05) in crude fat and dry matter content in breast and leg muscles compared to chromium chloride. Inclusion of chromium-enriched yeast to concentrate mixtures increased (P ≤ 0.01) the level of Cr in analysed tissues, which might be evidence of its better bioavailability in chickens. It can be assumed that such animal origin products may be a good source of effectively absorbed Cr in human nutrition.
Źródło:
Journal of Elementology; 2017, 22, 1
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Histopathology in diagnosis of broiler chicken and layer diseases – review of cases 1999-2010
Autorzy:
Dolka, I.
Sapierzynski, R.
Bielecki, W.
Malicka, E.
Zbikowski, A.
Szeleszczuk, P.
Powiązania:
https://bibliotekanauki.pl/articles/32185.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The aim of this study was to estimate the prevalence of histopathological lesions in the different organs in relation to the commercial-type and the age of birds (i.e. broiler chickens and layers). During the period 1999-2010 a total of 189 cases was submitted to the Division of Animal Pathomorphology, Department of Pathology and Veterinary Diagnostics at WULS. Most cases were found in broiler chickens (66.7%). The majority of the histopathological lesions were detected in the liver and lymphoid organs. In of 29% cases of hepatic injury pathognomonic lesions associated with inclusion body hepatitis (IBH) were found. The mean age of birds was 23 days. Among IBH cases proventriculitis (58%) was more often found than gizzard lesions (25.8%). Interestingly, we noted some intranuclear inclusions in the epithelial cells within the proventriculus. A low percentage of histopathological evidence of infectious bursal disease (IBD) was reported in chickens. The gastrointestinal tract was the second most frequent predilection site for histopathological lesions. Histopathological findings within the heart and lungs were less common and were more often seen in the upper respiratory tract. Cases of infectious laryngotracheitis (ILT) were registered in broiler chickens (3.2%, mean age 37 days) and in layers (4.8%; mean age 196 days). Lesions associated with Marek’s disease, avian leukosis and fowl pox were recognized only in layers, respectively in 3.2% (mean age 176 days), 1.6% (mean age 205 days) and 1.1% (mean age 196 days) of all cases. Avian encephalomyelitis (AE) was noted only in 0.5% of all cases.
Źródło:
Polish Journal of Veterinary Sciences; 2012, 15, 4
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simultaneous detection of astrovirus, rotavirus, reovirus and adenovirus type I in broiler chicken flocks
Autorzy:
Roussan, D.A.
Shaheen, I.A.
Khawaldeh, G.Y.
Totanji, W.S.
Al-Rifai, R.H.
Powiązania:
https://bibliotekanauki.pl/articles/30522.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Enteric diseases cause substantial economic losses to the poultry industry. Astroviruses, rotaviruses, reoviruses, and adenovirus type 1 have been reported as a significant cause of intestinal symptoms in poultry. In the present study, intestinal samples from 70 commercial broiler chicken flocks were examined for the presence of astroviruses, rotavirus, and reovirus by reverse transcription-polymerase chain reaction, and for the presence of group I adenovirus by polymerase chain reaction. Astroviruses were identified in 38.6% of samples tested. Both avian nephritis virus and chicken astrovirus were identified in the astrovirus positive flocks, where 74.1% of these flocks were positive for only one type of astrovirus, whereas, 25.9% of these flocks were positive for both types of astrovirus. Reoviruses, rotaviruses, and adenoviruses were identified in 21.4, 18.6, and 14.3% of these flocks, respectively. Concomitant infection with two or more viruses in the same flock were also prominent, where 5.7, 5.7, 2.9, 2.9, 1.4, and 1.4% of these flocks were positive with both astrovirus and rotavirus; astrovirus and adenovirus; astrovirus and reovirus; rotavirus and adenovirus; rotavirus and reovirus; and reovirus and adenovirus respectively. Moreover, 4.3 and 2.7% of these flocks were positive for astrovirus, reovirus, and adenovirus; and astrovirus, reovirus, and rotavirus, respectively. Further studies will focus on identifying specific viral factors or subtypes/subgroups associated with disease through pathogenesis studies, economic losses caused by infections and co-infections of these pathogens, and the costs and benefits of countermeasures.
Źródło:
Polish Journal of Veterinary Sciences; 2012, 15, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prevalence of Salmonella spp. in broiler chicken flocks in northern Poland in 2014–2016
Autorzy:
Witkowska, D.
Kuncewicz, M.
Żebrowska, J.P.
Sobczak, J.
Sowińska, J.
Powiązania:
https://bibliotekanauki.pl/articles/2081943.pdf
Data publikacji:
2021
Wydawca:
Instytut Medycyny Wsi
Tematy:
Salmonella
broiler chicken
northern Poland
Opis:
Zoonotic serotypes of Salmonella enterica subsp. enterica are an important biological factor that poses a threat to public health, and broilers are often asymptomatic carriers of these bacteria. The aim of this study was to analyze the prevalence of Salmonella spp. and Salmonella serotypes in broiler chicken flocks in northern Poland in 2014–2016. The study was conducted on commercial flocks monitored by the Institutes of Veterinary Hygiene in Gdańsk and Olsztyn in 2014–2016. A total of 4,331 samples were investigated. Identification of Salmonella spp. was performed by a culture-dependent method followed by biochemical and serological confirmation tests, in accordance with Polish Standards. The total percentage of infected flocks in northern Poland reached 1.57%. The prevalence of Salmonella spp. in broiler chickens decreased from 2.19% in 2014 to 1.22% in 2016. The percentage of flocks infected with S. Enteritidis and S. Typhimurium was 1.18% and 0.12%, respectively (S. Enteritidis and S. Typhimurium were detected in 1.29% of flocks). The most common serotypes that had not been covered by the control programme were S. Mbandaka (0.14%), S. Infantis (0.07%) and, sporadically, S. Kentucky and S. Anatum. The percentage of infected flocks was higher (by 0.26%) in the Pomeranian Region than in the Region of Warmia and Mazury, and it increased over the analyzed period – the highest number of positive samples were found in 2016 (2.04%). In the Region of Warmia and Mazury, the percentage of infected flocks was highest in 2014 (3.08%); in 2014–2016, the number of positive samples decreased steadily to reach 0.41% in 2016. In the analyzed regions, the incidence of human salmonellosis was correlated with the percentage of infected broiler flocks.
Źródło:
Annals of Agricultural and Environmental Medicine; 2018, 25, 4; 693-697
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of slaughter value of three broiler chicken genotypes
Ocena wartości rzeźnej kurcząt z trzech materiałów genetycznych
Autorzy:
Riedel, J.
Michalczuk, M.
Zdanowska-Sasiadek, Z.
Powiązania:
https://bibliotekanauki.pl/articles/2474.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
assessment
slaughter value
broiler chicken
genotype
carcass trait
meat breed
chicken
Opis:
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 till 63rd day of age. Examined parameters were: dressing percentage, breast and leg meat yield and fatness. F1 crossbred (C x GP) were characterized by rather low body weight, typical for slow growing chicken and good musculature, especially breast. Re-crossing with meat type cocks affected significant (P < 0.01) improvement of the slaughter parameters. F2 crossbred (C x (C x GP) reached high body weight, typical for medium growing chicken. In comparison with Hubbard JA 957 F2 crossbred had lower body weight, the same dressing percentage, better breast and worse leg musculature, and less abdominal fat. High breast meat percentage in carcass and less fatness suggested, that these chickens can be used in meat production, as a medium growing material designed for a longer fattening period (9 weeks).
Ocena wartości rzeźnej kurcząt z trzech materiałów genetycznych. W badaniach porównano kurczęta z trzech grup genetycznych: mieszańce F1 powstałe ze skrzyżowania lekkich kur rasy Zielononóżka kuropatwiana z ciężkimi kogutami typu mięsnego, mieszańce F2, efekt powtórnego krzyżowania powstałego mieszańca Cobb x Zk z kogutami typu mięsnego oraz Hubbard JA 957, przeznaczone do dłuższego chowu (9 tygodni). Kurczęta odchowywano do wieku 63 dni. Oceniano wydajność rzeźną, umięśnienie i otłuszczenie tuszek. Mieszańce F1 (C x Zk) charakteryzowała dość mała masa ciała, typowa dla kurcząt wolno rosnących, oraz dobre umięśnienie, zwłaszcza piersi. Ponowne skrzyżowanie z kogutami typu mięsnego wpłynęło na istotną (P < 0,01) poprawę parametrów oceny poubojowej. Mieszańce F2 (C x (C x Zk)) uzyskały dużą masę ciała, typową dla kurcząt średniorosnących. W porównaniu do kurcząt Hubbard JA 957 mieszańce F2 miały małą masę ciała, taką samą wydajność rzeźną, lepsze umięśnienie piersi, gorsze nóg i mniejsze otłuszczenie. Duży udział mięśni piersiowych w tuszce oraz małe otłuszczenie wskazują na przydatność tych kurcząt w użytkowaniu mięsnym jako materiał średnio rosnący, przeznaczony do dłuższego, 9-tygodniowego chowu.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science; 2013, 52
1898-8830
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anticoccidial effect of apple cider vinegar on broiler chicken: an organic treatment to measure anti-oxidant effect
Autorzy:
Hayajneh, F.M.F.
Jalal, M.
Zakaria, H.
Abdelqader, A.
Abuajamieh, M.
Powiązania:
https://bibliotekanauki.pl/articles/2087712.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
apple cider vinegar
broilers
coccidial oocytes
feed
diet
disease
Źródło:
Polish Journal of Veterinary Sciences; 2018, 21, 2; 361-369
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic characterization of Infectious Bursal Disease Viruses isolated from the vaccinated broiler chicken flocks in Egypt during 2015-2016
Autorzy:
Abou El-Fetouh, M.S.
Abdallah, F.M.
Powiązania:
https://bibliotekanauki.pl/articles/2087678.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
IBDV
broiler
very virulent
variant
RT-PCR
Źródło:
Polish Journal of Veterinary Sciences; 2018, 21, 3; 581-588
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effectiveness of the use of probiotics in the diet of broiler chickens
Autorzy:
Poberezhets, J.
Kupchuk, I.
Powiązania:
https://bibliotekanauki.pl/articles/2118999.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Zootechniczne
Tematy:
broiler chicken
probiotic
feed
productivity
meat quality
Opis:
The aim of the experiment was to research the productivity and carcass characteristics of broiler chickens receiving a probiotic feed supplement. The probiotics added to the diet of broiler chickens were shown to increase live weight by 11,9%, average daily gains by 12,1%, and total weight gain by 12,2%, reducing feed consumption per kg increase by 8,9% compared with the control. Consumption of the probiotic feed supplement increased the pre-slaughter live weight by 12,0% and the gutted carcass weight by 13,3% relative to the control.
Źródło:
Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego; 2021, 17, 4; 9-16
1733-7305
Pojawia się w:
Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 68

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