| Summary: | 碩士 === 國立宜蘭大學 === 生物技術與動物科學系動物科學碩士班 === 107 === Sangrovit (SGV) is a phytobiotic feed additive extracted from Macleaya cordata. The active substances are alkaloids which can enhance appetite and reduce intestinal inflammation. Such actions may improve nutrient utilization by animals. Experiment 1 investigated the effects of SGV (0.04 g/kg BW/day) in diets on nutrient digestion, nitrogen balance, milk traits and plasma traits in early lactation of primiparous dairy does. Primiparous dairy does (n=6) in early lactation were allocated randomly, according to the initial weight, to the control and the SGV treatments. During the period, water and block salt were given ad libitum, but bermudagrass straw (1.7 % body weight) and concentrate (1.31 % body weight) was restricted giving. The results show that, adding SGV, the water intake were not significant different. Total tract nutrient digestibility of non-fiber carbohydrate was lower than the control (P<0.1), but total tract nutrient digestibilities corrected for body weight were of no significant differences. Urine volume changes was not different, but urinary nitrogen excretion were increased (P<0.10). Milk volume, body weight changes and plasma traits were not different. Experiment 2 investigated the effects of SGV (0.04 g/kg BW/day) in diets on nutrient digestion, nitrogen balance, milk traits and plasma traits of weaned kids. Weaned kids (n=5) were allocated by random, according to the initial weight, to the control and the SGV treatments. During the period, water and block salt were given ad libitum, but bermudagrass straw (0.36 % body weight) and concentrate (1.39 % body weight) was restricted giving. The results show that, adding SGV, the water intake were not significant different. Total tract nutrient digestibility of dry matter was significant higher than control (P<0.05), and total tract nutrient digestibility of organic matter was also higher (P<0.1), but total tract nutrient digestibilities corrected for body weight were of no differences. Urine volume corrected for body weight was lower than control (P<0.1), and urine volume corrected for metabolic body weight was significant lower than control (P<0.05), but urinary nitrogen excretion were not significant different. The concentration of plasma total protein was significant lower than control (P<0.05) before the meal, and the concentration of globulin was lower than control (P<0.10) before the meal. Body weight changes were not significant different. Based on the results from the two thesis experiments, it appears that SGV decreased total tract nutrient digestibility of non-fiber carbohydrate in early lactation of primiparous dairy does, and weaned kids that supplemented with SGV, promoted nutrient digestion and reduced globulin concentrations before the meal.
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