Effect of spray dried porcine blood by-products and bone protein hydrolysate in diets on laying hens performance and cystatine, lysozyme and antytrypsin activity in egg.

TI: EFFECT OF SPRAY DRIED PORCINE BLOOD BY-PRODUCTS AND BONE PROTEIN HYDROLYSATE IN DIETS ON LAYING HENS PERFORMANCE AND CYSTATINE, LYSOZYME AND ANTYTRYPSIN ACTIVITY IN EGG AU: Jamroz D. , Orda J. , Wiliczkiewicz A., Skorupi ńska J. , Kubizna J. , Skiba T.2, Koźlik K. AD: Department of Animal Nutrition and Feed Quality, Wr ocław University of Environmental and Life Sciences Department of Animal Products Technology and Qualit y Management, Wrocław University of Environmental and Life Sciences LA: English AB: The laying hens were fed diets containing 2 or 4% spray dried porcine blood plasma (SDBP), blood cells (SDBC) or bone protein hydrolys ate (BPH) within 22–29 weeks of life (56 days) and 3 or 7% of these components in a peri od of 30–37 weeks (56 days). The laying rate, egg weight, feed intake and conversion , basic egg’ quality parameters, its sensory properties and cystatin, lysozyme as well a s antitrypsin activity in egg white, were assayed. The used diets have not clearly improved t h production parameters and egg quality. In young hens the lower egg weight (P<0.01 ), share of yolk in eggs were stated only in treatments fed diets containing BPH and SDBCs. I n older hens reduced laying rate (P<0.01) and worse feed conversion (P<0.01) but bet ter gg shell quality were found in group fed BPH in comparison to control or birds fro m treatments in which blood byproducts were used. Application of dried blood cell s or blood plasma meal improved the sensory parameters of eggs. Significantly higher ac tivity of analysed bio-substances in egg was stated in eggs from hens fed SDBC and BPH (P<0. 01). DE: blood plasma and cells, bone protein, hens, perform ance, egg quality, cystatine, lysozyme, antitrypsin activity SO: Zesz. Nauk. UP Wroc., Biol. Hod. Zwierz., LXVI, 590 : 9–28. TI: THE ANALYSIS OF THE "JAR-PEK" PRODUCERS GROUP A CTIVITIES AU: Jasi ński L., Jankowska-Mąkosa A., Środoń S., Knecht D. AD: Department of Pigs Breeding, Institute of Anima l Breeding, Wrocław University of Environmental and Life Sciences LA: Polish AB: Producer groups are active as entrepreneurs and the condition of their actions is the achievement of certain revenue from the sale of pro ducts or groups of products produced onfarm states. The aim of this study was to analyze t he functioning of Jaroci ński Association of Pig Producers "JAR-PEK" based in Golina, includi ng the presentation profile of the affiliated farmers and their farms and the analysis of benefits for pig producers after joining the group. The research tool was a personal questio nnaire sent to 30 farmers in the Jarocin district affiliated group of agricultural producers ’ "JAR-PEK" and the statement of sales