Bíres J, Bartko P, Jencík F, Weissová T, Jesenská M, Bíresová M
University of Veterinary Medicine, Kosice, Slovak Republic.
Vet Med (Praha). 1995 Feb;40(2):35-44.
The objective of the paper was to test efficiency of feed ration enriched with calcium, phosphorus salts and fat concentrate for elimination of negative impacts of magnesite light ashes in beef bulls kept in an exposure area of magnesite works. For this purpose, 24 animals received a feed mix fortified with dicalcium phosphate at a rate of 100 g per head/day for eight months (P1 group) and another group of 24 bulls were administered a feed mix with an addition of 8% corn fat concentrate (P2 group). The other 24 animals were control (control group K). The clinical picture involved the occurrence of mild to profuse diarrheas which were alternately characteristic of all animal species in the first two months of the trial. Feed intake of the investigated groups was equal. Supplementation of feed ration with dicalcium phosphate and corn concentrate increased the weight gains of experimental animals in comparison with control bulls, the increase being 13.2 and 24.5%, resp. In comparison with the control bulls, the intake of the above supplements did not basically influence the dynamics of hematological profile indicators in the experimental bulls (Figs. 1-4). As for the parameters of hepatic profile, in the 3rd month of testing AST activity was positively influenced in both experimental groups if compared with the control group (P < 0.01), Fig. 5, and at the end of observation ALT activity in P2 group (P < 0.01), Fig. 6. Bilirubinemia dynamics did not change in the investigated groups after administration of either supplement (Fig. 9). ALP activity maintained statistically insignificantly higher values in the control animals in the second half of the trial, which demonstrated impairment of mineral metabolism in this group (Fig. 8). Significant differences in IgC levels between the control and experimental groups were confirmed in the 3rd month of the trial (P < 0.01), Fig. 12. In comparison with the control animals, the effect of dietary dicalcium phosphate supplementation in the experimental group P1 and dietary fat extract supplementation in the P2 group was observed in Ca, P and Mg concentrations to a more significant extent in the examined organs as well as in blood serum (Tabs. I-V). Except in spleen, there was a trend of higher cumulation of Ca in all the examined organs of bulls receiving dicalcium phosphate supplement. Phosphorus cumulation showed the same dependence upon dicalcium phosphate intake in the examined organs. Mg deposition in all examined organs showed minimum differences between the experimental groups and control animals.(ABSTRACT TRUNCATED AT 400 WORDS)
本文的目的是测试富含钙、磷盐和脂肪浓缩物的饲料对消除菱镁矿厂暴露区域饲养的肉牛中菱镁矿轻灰负面影响的效率。为此，24头动物连续8个月接受以每头每天100克磷酸氢钙强化的饲料混合物（P1组），另一组24头公牛则给予添加8%玉米脂肪浓缩物的饲料混合物（P2组）。另外24头动物作为对照（对照组K）。临床症状包括在试验的前两个月中出现轻度至重度腹泻，这在所有动物种类中交替出现。各研究组的采食量相同。与对照公牛相比，在饲料中添加磷酸氢钙和玉米浓缩物可增加实验动物的体重增加，增幅分别为13.2%和24.5%。与对照公牛相比，上述补充剂的摄入对实验公牛血液学指标的动态变化基本没有影响（图1-4）。至于肝脏指标参数，在测试的第3个月，与对照组相比，两个实验组的AST活性均受到正向影响（P<0.01），图5，在观察结束时，P2组的ALT活性受到影响（P<0.01），图6。给予任何一种补充剂后，各研究组的胆红素血症动态均未改变（图9）。在试验后半期，对照组动物的碱性磷酸酶活性维持在统计学上无显著差异的较高水平，这表明该组矿物质代谢受损（图8）。在试验的第3个月，对照组和实验组之间的IgC水平存在显著差异（P<0.01），图12。与对照动物相比，在实验组P1中添加饲料磷酸氢钙和在P2组中添加饲料脂肪提取物的效果在被检查器官以及血清中的钙、磷和镁浓度方面更为显著（表I-V）。除脾脏外，接受磷酸氢钙补充剂的公牛的所有被检查器官中钙的累积都有增加的趋势。磷的累积在被检查器官中对磷酸氢钙的摄入表现出相同的依赖性。所有被检查器官中的镁沉积在实验组和对照动物之间差异最小。（摘要截断于400字）
