给轻型羔羊喂食杏仁壳:对生长性能、消化利用率和血液代谢物的影响

IF 2.5 2区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE Animal Feed Science and Technology Pub Date : 2024-08-23 DOI:10.1016/j.anifeedsci.2024.116090
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引用次数: 0

摘要

在饲喂轻型羔羊的精料中添加杏仁壳(AH)对动物生产性能、日粮利用率和血液代谢物的影响。配制了三种等氮等能精料,每 100 克(新鲜物质)中分别添加 0 克(对照组)、6 克(AH6)或 12 克(AH12)杏仁壳。30 只曼切加种羔羊(雄性 15 只,雌性 15 只;体重(BW)12.3 ± 0.18 千克)按体重被分成 6 个同质组(每种性别 3 组),在性别内随机分配到每种试验精料中。羔羊自由采食精料和大麦秸秆,直到体重达到约 23.0 千克。各组之间在最终体重、精料和秸秆摄入量以及饲料转化率方面没有差异(P ≥ 0.182)。平均日增重、干物质消化率和粗蛋白消化率有因精料中添加 AH 而降低的趋势(P < 0.10)。与饲喂对照组精料的羔羊相比,饲喂 AH12 的羔羊尿损失更大(P < 0.05)(每 100 克氮摄入量分别为 15.4 克和 11.5 克),尽管各组的氮摄入量相似。饲喂 AH 不影响(P ≥ 0.213)血液中白蛋白、球蛋白、尿素、肌酐、葡萄糖、总胆红素和胆固醇的浓度,也不影响血液中肝脏酶的活性。死后分析表明,各组羔羊瘤胃中的 pH 值和总挥发性脂肪酸(VFA)浓度没有差异,但饲喂 AH 精料的羔羊 NH3-N 浓度较低(P < 0.05)。此外,与饲喂对照组和 AH6 精料的羔羊相比,饲喂 AH12 日粮的羔羊丙酸盐摩尔比例较低(P < 0.05),丁酸盐比例较高(P < 0.05)。总的来说,没有观察到精料与性别的相互作用,除了瘤胃 VFA 图谱的一些差异外,性别对测量参数没有影响。总之,在轻型羔羊精料中每 100 克精料添加 12 克 AH 不会影响动物的生长。
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Feeding almond hulls to light lambs: Effects on growth performance, digestive utilization and blood metabolites

The effects of including almond hulls (AH) in the concentrate fed to light lambs on animal performance, diet utilization, and blood metabolites. Three isonitrogenous and isoenergetic concentrates were formulated with either 0 (control), 6 (AH6) or 12 (AH12) g of AH per 100 g (fresh matter basis). Thirty Manchega breed lambs (15 males and 15 females; 12.3 ± 0.18 kg body weight (BW)) were distributed into six homogeneous groups according to BW (3 groups of each sex), which were randomly assigned within sex to each experimental concentrate. Lambs were fed concentrate and barley straw ad libitum until reaching about 23.0 kg BW. There were no differences (P ≥ 0.182) between groups in final BW, intake of concentrate and straw, and feed conversion rate. Average daily gain and digestibility of dry matter and crude protein tended (P < 0.10) to decrease by the AH inclusion in the concentrate. Lambs fed AH12 showed greater (P < 0.05) urinary losses than those fed the control concentrate (15.4 and 11.5 g per 100 g of N intake, respectively), despite the similar N intake in all groups. Feeding AH did not affect (P ≥ 0.213) blood concentrations of albumin, globulins, urea, creatinine, glucose, total bilirubin and cholesterol or blood activities of hepatic enzymes. The post-mortem analysis revealed no differences among groups in pH and total volatile fatty acids (VFA) concentrations in the rumen of lambs, but NH3-N concentrations were lower (P < 0.05) in the lambs fed the concentrates with AH. In addition, lambs fed AH12 diet had lower (P < 0.05) molar proportions of propionate and greater (P < 0.05) proportions of butyrate compared with lambs fed control and AH6 concentrate. In general, no concentrate x sex interactions were observed, and sex had no effect on the measured parameters except for some differences in ruminal VFA profile. In conclusion, AH can be included at in light lambs’ concentrate up to 12 g per 100 g of concentrate without impairing animal growth.

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来源期刊
Animal Feed Science and Technology
Animal Feed Science and Technology 农林科学-奶制品与动物科学
CiteScore
6.00
自引率
6.20%
发文量
266
审稿时长
3 months
期刊介绍: Animal Feed Science and Technology is a unique journal publishing scientific papers of international interest focusing on animal feeds and their feeding. Papers describing research on feed for ruminants and non-ruminants, including poultry, horses, companion animals and aquatic animals, are welcome. The journal covers the following areas: Nutritive value of feeds (e.g., assessment, improvement) Methods of conserving and processing feeds that affect their nutritional value Agronomic and climatic factors influencing the nutritive value of feeds Utilization of feeds and the improvement of such Metabolic, production, reproduction and health responses, as well as potential environmental impacts, of diet inputs and feed technologies (e.g., feeds, feed additives, feed components, mycotoxins) Mathematical models relating directly to animal-feed interactions Analytical and experimental methods for feed evaluation Environmental impacts of feed technologies in animal production.
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