Fattening pheasants for the production of quality meat is a relatively recent development. With its high protein and low fat content, meat of pheasant is a highly nutritious food whose value exceeds that of broiler chickens meat. Despite the fact that the intensive rearing of pheasants has developed relatively quickly in recent years, information on the fattening capabilities and slaughter values of pheasants is often insufficient in the current literature. The length of the fattening period also differs in the literature and reported from 13 to 20 weeks while highest weight gains of pheasants to occur between 4 and 12 weeks of age. Growth of pheasants is also reflected in the weight and dimensions of internal organs, crop, oesophagus, gizzard and intestine grow up to 12 weeks of age, after which they develop their physiological ability. The structure, weight and length of the digestive tract and other internal organs of pheasants depend on housing system, gender and nutrition. Relatively few investigations were conducted to determine the influence of feed additives on fattening performance of pheasants. One of the possibilities is the use of humic acids in nutrition pheasant. Humic acids are organic compounds naturally present in soil and they positively affected growth ability, feed conversion and reducing mortality. /18.4.1953 týždňom veku. Rast bažantov sa odráža aj v hmotnosti a rozmeroch vnútorných orgánov, hrvoľ, pažerák, žalúdok a črevá rastú až 12 týždňov, potom sa rozvíjajú ich fyziologické schopnosti. Štruktúra, hmotnosť a dĺžka tráviaceho traktu a vnútorných orgánov bažantov závisí systému chovu, pohlavia a výživy. Relatívne málo experimentov bolo realizovaných za účelom zistenie vplyvu doplnkových látok na výkrmové ukazovatele bažantov. Jednou z možností je použitie humínových kyselín vo výžive výkrmových bažantov. Humínové kyseliny sú organické zlúčeniny prirodzene prítomné v pôde a pozitívne ovplyvňujú rastovú schopnosť, konverziu krmiva a znižujú mortalitu.749 Journal of Central European Agriculture, 2017, 18(4), p.749-761 DOI: 10.5513/JCEA01/18.4.1953 749 Journal of Central European Agriculture, 2017, 18(4), p.749-761 DOI: 10.5513/JCEA01/18.4.1953 749 Journal of Central European Agriculture, 2017, 18(4), p.749-761 DOI: 10.5513/JCEA01Kľúčové slová: bažant, humínové kyseliny, kŕmne aditíva, výkrm Detailný abstrakt V poslednom období možno vo svete badať zvýšený záujem o farmový spôsob chovu voľne žijúcej zveri. Je to spôsobené predovšetkým dopytom po mäse a jeho zúžitkovaním v humánnej výžive. Doposiaľ bolo publikovaných niekoľko prác, ktoré sa zaoberajú aj farmovým chovom bažantej zveri. Viaceré práce sa zaoberajú možným výkrmom bažantov, ktorý vychádza z klasického výkrmu brojlerových kurčiat. V relatívne nedávnej dobe sa v rámci umelého chovu bažantov začal uplatňovať aj ich výkrm za účelom produkcie kvalitného bažantieho mäsa, typického vysokým obsahom ľahko stráviteľných bielkovín a nízkym obsahom tuku. Táto situácia už nie je ničím neobvyklá v zahraničí, kde cielene orientované f...

This study investigated the effect of different concentrations of humic acids (HAs) on the selected serum biochemistry parameters and oxidative status markers in common pheasants (Phasianus colchicus). The control birds were fed a diet with no HA additives, while the birds in the experimental groups were fed diets containing HAs at the level of 0.5% (EG1), 0.75% (EG2) and 1.0% (EG3) from 1 to 90 days of age.  The blood sodium concentration decreased (P < 0.01) in the group fed by 1.00% HAs compared to the control birds. The concentration of potassium in the EG2 group increased (P < 0.05) in comparison to the control group. The EG1 group showed a higher (P < 0.01) serum glucose than the EG2 group. Significant differences (P < 0.05; P < 0.01) were also found between the experimental groups (EG1 vs EG2, and EG2 vs EG3) in the cholesterol concentrations. The birds in the experimental groups showed lower ROS (reactive oxygen species) and MDA (malondialdehyde) production. An opposite effect was observed in the TAC (total antioxidant capacity), where its values significantly increased in the experimental groups. The diet supplementation affected the enzymatic antioxidant system of the fattened pheasants, and so the HAs exhibited an antioxidant potential in these birds.

Background: The effects of humic substances (HSs) on the carcass characteristics and meat quality traits of breast and thigh muscles were studied. Methods: In total, 200 pheasants were allocated to 4 treatments, each containing 50 birds. The control birds were fed a diet without additives (0% HS); the other treatment birds were fed diets containing HSs at 0.5, 0.75 and 1.0% from 1 to 90 days of age. At the end of the experiment, several carcass characteristics were measured and breast and thigh muscle samples were taken to determine the composition of several nutrients by standard laboratory methods and procedures. Results: The carcass weights of both males and females increased significantly (p < 0.05) in the 0.50 HS and 0.75 HS groups after supplementation with HSs. The same effect of humic substances in the 0.50 and 0.75 HS groups was found in the weight of breast and thighs (p < 0.05). Significantly (p < 0.05), the highest carcass yield in males and females was found in the 0.50 HS group. Conclusions: Feeding with a diet containing HSs can have a beneficial influence on the carcass parameters, decrease the crude fat content in the meat and change the profile of bioactive fatty acids in the breast and thigh muscles of broiler pheasants.