Abstract
This experiment was conducted to evaluate the effects of dietary non-toxic sulfur (NTS) on physiological response, litter performance, blood profiles and milk composition in lactating sows. A total of 40 multiparous lactating sows (Yorkshire × Landrace) with similar body weight, backfat thickness (BF) and parity were allotted to 4 treatments and 10 replicates in a completely randomized design. The experimental treatments were as follows: 1) Control: corn-SBM based diet, 2) NTS0.1: basal diet + NTS 0.1%, 3) NTS0.2: basal diet + NTS 0.2%, 4) NTS0.4: basal diet + NTS 0.4%. In physiological response of lactating sows, there was no significant difference among treatments. In blood profiles, linear response of increasing dietary NTS levels were observed for the IL-1 of 14th day of lactation (p = 0.03). Litter weight and average daily gain of piglets decreased linearly with increasing dietary NTS levels (p < 0.05). Consequently, there was a negative effect on litter performance with increasing NTS levels. However, as inclusion of dietary NTS in lactating diet had positive influences on immune response of lactating sows, mortality of piglets was considered to improve.
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