Browsing by Author "Marutsova V."

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    Effects of aflatoxin B1 alone or co-administered with mycotox NG on performance and humoral immunity of Turkey broilers
    (2017-01-01) Valchev I.; Marutsova V.; Zarkov I.; Ganchev A.; Nikolov Y.
    The contamination of poultry feeds with aflatoxins is a global problem responsible for considerable losses to poultry industry. The aim of the present investigation was to evaluate the effects of aflatoxin B1 and Mycotox NG, applied either independently or together, on performance, relative weights of visceral organs and antibody titres against Newcastle disease in turkey broilers. Experiments of 42-day duration were carried out with sixty 7-day-old female turkey broilers (meat TM strain) divided into one control and five treatment groups (n=10): Group І - control (fed standard feed according to the species and age of birds); Group II - experimental, whose feed was supplemented with 0.5 g/kg Mycotox NG, Group II - experimental, whose feed contained 0.2 mg/kg aflatoxin B1, Group IV - experimental, whose feed contained 0.4 mg/kg aflatoxin B1, Group V - experimental, supplemented with 0.2 mg/kg aflatoxin B1 and 0.5 g/kg Mycotox NG and Group VI - experimental, supplemented with 0.4 mg/kg aflatoxin B1 and 0.5 g/kg Mycotox NG. In Groups III and IV, production traits (live body weight, daily weight gain, feed intake) as well as antibody titres were reduced along with increased feed conversion and relative weights of liver, kidneys, heart, pancreas, proventriculus and gizzard. At the same time, relative weights of the spleen, thymus and bursa of Fabricius were statistically significantly lower. The supplementation of the feed of Groups V and VI with 0.5 g/kg Mycotox NG reduced and prevented some of deleterious effects of AFB1 on production traits, antibody titres and relative weights of visceral organs.
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    EVALUATION OF MYCOTOXIN BINDER SUPPLEMENTATION ON PRODUCTION PARAMETERS AND ORGAN WEIGHTS IN TOULOUSE GEESE WITH EXPERIMENTAL AFLATOXICOSIS
    (2022-03-01) Valchev I.; Stoyanchev K.; Marutsova V.; Kanakov D.; Lazarov L.; Hristov T.S.; Binev R.
    The present study was undertaken to evaluate the beneficial effects of a mycotoxin binder (Mycotox NG 0.05%) in 40 day-old Toulouse geese from both sexes with experimental aflatoxicosis. The birds were reared from day one to 42 days of age on deep litter system and divided into four groups. Nor-mal feed free of aflatoxin (AFB1), was given to the control (Group 1). The feed of Group 2 was supplemented with 0.5 g/kg Mycotox NG, aflatoxin (0.5 mg/kg feed) was supplemented to the feed of Group 3 and Mycotox NG (0.05%) + 0.5 mg/kg AFB1 – to the feed of Group 4. Production parameters (body weight gain, feed intake, feed conversion) and relative organ weights were recorded. The results showed that the total feed intake, final live weight of Mycotox NG + AFB1 treated birds (Group 4) at 6 weeks of age were significantly increased (P<0.01) as compared to birds treated only with AFB1 (Group 3). The total feed conversion ratio of the group given AFB1 only (Group 3) at 6 weeks of age was significantly increased (P<0.01) compared to controls while in Mycotox Ng + AFB1 treated birds (Group-4) it was significantly increased (P<0.01) by post treatment week 1 vs controls, but not as compared to birds treated with AFB1 alone. There was a significant increase in relative weights of liver, kidneys, spleen, heart, pancreas, proventriculus and gizzard in birds fed only afla-toxin (Group 3). The co-administration of Mycotox NG (0.5 g/kg feed) with AFB1 (Group 4) reduced the relative weights of thymus and bursa of Fabricius. The study concluded that dietary supplementa-tion of Mycotox NG could partially neutralise aflatoxicity in geese.