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Experiments were conducted to compare the efficacy of montmorillonite (M) and montmorillonite nanocomposite (MN) to reduce the toxicity of aflatoxin (AF) in growing/finishing pigs. A total of 144 weaned pigs were assigned to six dietary treatment groups (0 g of adsorbents and 0 mg of AF/kg feed; 3 g of M/kg feed; 3 g of MN/kg feed; 0.11 mg of AF/kg feed; 0.11 mg of AF plus 3 g of M/kg feed; and 0.11 mg of AF plus 3 g of MN/kg feed). Compared to the control, AF alone decreased average daily gam (ADG) by 12.9% (P 0.05). AF intake increased relative weights of liver, kidney, spleen and pancreas by 8.24, 27.3, 41.2 and 42.9% (P < 0.05), and resulted in significant alteration...

In order to choose suitable varieties with high yield and good quality for cultivation, 10 lucerne varieties, including six foreign ones ('WL‐525HQ’, ‘WL‐414’, ‘WL‐323’, ‘Italian’ lucerne, ‘Sitel’, and ‘Vernal') and four domestic ones ('Wudi’ lucerne, ‘Aohan’, ‘Zhongmu No.1’, and ‘Inner Mongolian’ lucerne), were studied in Zhengzhou, Henan Province, China, in 2001 and 2002 using a randomised block design with three replications. Each plot was cut four or five times each year over the 2‐year period to evaluate herbage production of the tested varieties. ‘WL‐525HQ’, ‘Sitel’, and ‘WL‐414’ were the best, with relatively high plant height, large leaf/stem ratio, and dry matter herbage yield. Cutting times had a significant effect on dry matter herbage yield, with the highest yield in the first cut and the lowest in the fifth. Correlation analyses showed that plant height was significantly positively related with dry matter herbage yield. Close relationships were found among annual dry matter herbage y...

We performed first principles LAPW linear response calculations for KNbO3 in the cubic, experimental tetragonal, and theoretical ground state rhombohedral structures. We found that the Born effective charges and dielectric constants strongly depend on the small atomic displacements involved in the ferroelectric phase transitions. We also calculated the zone center phonons for the cubic structure and compared them with previous LDA results.