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首页> 外文期刊>Tropical Animal Health and Production >Response to dietary tannin challenges in view of the browser/grazer dichotomy in an Ethiopian setting: Bonga sheep versus Kaffa goats
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Response to dietary tannin challenges in view of the browser/grazer dichotomy in an Ethiopian setting: Bonga sheep versus Kaffa goats

机译：在埃塞俄比亚环境中浏览器/格拉塞尔二分法的响应饮食单宁挑战：Bonga Sheep与Kaffa Goats

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It has been suggested that goats (typical browser) are better adapted to digest tannin-rich diets than sheep (typical grazer). To evaluate this, Bonga sheep and Kaffa goats were used in a 2x3 randomized crossover design with two species, three diets, and three periods (15-day adaptation+7-day collection). The dietary treatments consisted of grass-based hay only (tannin-free diet=FT), a high-tannin diet (36 % Albizia schimperiana (AS)+9 % Ficus elastica (FE)+ 55 % FT (HT)), and HT+polyethylene glycol 6000 (PEG). Animals were individually fed at 50 g dry matter (DM)/kg body weight (BW) and had free access to clean drinking water and mineralized salt licks. Nutrient intake, apparent nutrient digestibility, nutrient conversion ratios, and live weight changes were determined. Condensed tannin concentrations in AS and FE were 110 and 191 g/kg DM, respectively. Both sheep and goats ate 47 % more of HT than FT, and dry matter intake further increased by 9 % when PEG was added, with clear difference in effect size between goats and sheep (P<0.001). The effects of the tannin-rich diet and PEG addition were similarly positive for DM digestibility between sheep and goats, but crude protein (CP) digestibility was higher in HT+PEG-fed goats than in sheep fed the same diet. However, PEG addition induced a larger improvement in growth performance and feed efficiency ratio in sheep than in goat (P<0.001). The addition of PEG as a tannin binder improved digestion and performance in both species, but with the highest effect size in sheep.
机译：有人建议山羊（典型浏览器）更好地适应消化富含鞣制的饮食而不是羊（典型的格拉泽）。为了评估这一点，Bonga Sheep和Kaffa Goats被用于2x3随机的交叉设计，两个物种，三个饮食和三个时期（15天适应+ 7天收集）。饮食治疗包括仅基于草的干草（无南宁饮食= FT），高鞣制饮食（36％嗜碱性史利亚菌（AS）+ 9％Ficus Elastica（Fe）+ 55％Ft（HT）），以及HT +聚乙二醇6000（PEG）。将动物单独喂食50g干物质（DM）/ kg体重（BW）并免费获得清洁饮用水和矿化盐舔。确定营养摄入，表观营养消化率，营养转化比率和活重变化。 AS和Fe中的浓缩单宁浓度分别为110和191g / kg DM。当加入PEG时，羊和山羊在HT比FT中更多的HT，干物质摄入量进一步增加了9％，山羊和绵羊之间的效果大小差异（p <0.001）。富含丹宁的饮食和PEG添加的影响对于绵羊和山羊之间的DM消化率同样呈阳性，但HT + PEG喂养山羊的粗蛋白（CP）消化率高于喂食相同饮食的羊。然而，PEG添加诱导绵羊生长性能和饲料效率比在山羊中的提高（p <0.001）。将PEG作为单宁粘合剂的添加改善了两种物种的消化和性能，但绵羊的最高效果大小。

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