03319nam a2200253 a 450000100080000000500110000800800410001910000260006024501730008626000910025952024750035065000100282565300290283565300310286465300120289570000240290770000190293170000180295070000180296870000170298670000200300370000260302370000160304918667602023-06-30       2010    bl uuuu     u00u1 u    #d1 aOLIVEIRA, M. C. de S.  aEffect of nutritional supplementation with natural zeolite stibilite on gastrointestinal nemetodo infection in sheep in São Paulo state, Brazil.h[electronic resource]  aIn: WORLD BUATRICS CONGRESS, 26., 2010, Santiago. Abstracts...Santiago: BUATRICSc2010  aInfection by gastrointestinal nematodes is considered a major health problem in sheep production. With the increasing parasite resistance to anthelminthics, alternative methods of control have been investigated. Stilbite is the main Brazilian species of zeolite. The main action of zeolite in ammonium conservation is a decrease in N concentration in rumen solution through cation exchange. Besides retaining large quantities of ammonium, zeolite slowly releases this ion maintaining the continuous synthesis of protein. Since the levels of protein in the diet can influence nematode host resistance and resilience, this experiment was conducted to investigate whether supplementation with stilbite reduces the level of sheep nematode infection. We used 24 males and 24 females of the Santa Ines breed, weaned at 90 days of age, weighing an average of 18 kg, with twelve animals per treatment (six of each sex). The animals had similar levels of nematode infection and EPG greater than 2,000. The males were kept in a covered shed for 72-85 days, until they reach slaughter weight (35 kg), and the females for 85 days, during which animals received the experimental diet daily. This diet contained 14.8% crude protein, 74% TON, 0.35% calcium and 0.20% phosphorus on a dry matter basis. The control group received a diet without stilbite and the other three increasing doses of the mineral: 25 g (group 1), 50 g (group 2) and 75 g (group 3) animal/day. Eggs per gram of feces (EPG), coprocultures, total serum protein (TSP) and packed cell volume (PCV) were measured out weekly. The data were analyzed using the MD&ltEO procedure (SAS, 2003). No significant effects of the interaction between the treatment group on the EPG, TSP and HT were found, but there was a significant influence of the collection and the animal sex (P&lt 0.01). The mean EPG for treatment and their standard errors were 3,080 :f: 0,089; 3,050 :f:0,086; 2,979 :f: 0,087; 2,972 :f: 0,088, for the control and groups 1, 2 and 3, respectively. The average TSP and HT were 5.62 g/dL and 29.9% for control group; 5.52 g/dL and 29.8% for group 1; 5.74 g/dL and 30.9 % for group 2 and 5.58 and 30.7 for group 3. The coproculture showed that Haemonchus c°.nt~lt~ (90%) and Trichostrongylusspp (10%) were the prevalent parasites in all groups. We can conclu~e that the use of stllblte In the doses used does not cause significant reduction in the levels of infection by gastrointestinal nematodes In sheep.  asheep  aGastrointetinal nemetode  aNutritional Suplementation  aZeolite1 aCHAGAS, A. C. de S.1 aESTEVES, S. N.1 aTONELOTTO, M.1 aANIBAL, F. F.1 aGIGLIOTI, R.1 aOLIVEIRA, H. N.1 aBERNARDI, A. C. de C.1 aCALA, A. C.