Effects of sea buckthorn pomace supplementation on energy partitioning and substrate oxidation in male lambs
Effects of sea buckthorn pomace supplementation on energy partitioning and substrate oxidation in male lambs
复制标题
补充沙棘果渣对雄性羔羊能量分配和底物氧化的影响
DOI：
10.1016/j.anifeedsci.2018.10.006
复制
发表时间：
2019-01-01
影响因子：
3.2
通讯作者：
Zhang, J. X.
中科院分区：
文献类型：
--
作者：
Hao, X. Y.;Ding, N.;Zhang, J. X.
本实验研究了日粮中添加沙棘果渣 (SBP) 对公羊羔羊能量分配、底物氧化以及碳氮平衡的影响。随机选取杜泊×1/2细尾汉族雄性羔羊40只（体重=22.2±0.92kg，年龄=120±11天，平均值±标准差），均分为4组。饮食采用等氮配制，并含有不同水平的 SBP：1) 0% SBP（对照）； 2) 7.8%干物质(DM)SBP(8SBP)； 3) 16.0% DM SBP (16SBP)； 4) 23.5% DM SBP (24SBP)。羔羊单独饲养50 d，然后测定营养物质消化率。然后使用专为小型反刍动物设计的聚碳酸酯流浆箱测定气体交换。 24SBP（2.1 和 0.29 kg/d）的 DM 和粗蛋白（CP）摄入量高于对照（1.28 和 0.24 kg/d）或 8SBP（1.84 和 0.24 kg/d）。治疗饮食不会导致代谢能（ME）摄入和产热（HP）差异。饲喂 24SBP 的羔羊粪便中的能量和氮损失高于其他组。营养物氧化对产热的贡献（OXP/HPx、OXCHO/HPx 和 OXF/HPx）不受治疗饮食的影响（P > 0.228）。在 16SBP 饮食中观察到脂肪能量保留 (REfat) 和总组织能量保留 (REtotal) 的最高值。结果表明，沙棘果渣可以添加到公羊羔羊的日粮中，并且在日粮中添加16%的SBP对能量代谢没有不利影响，并导致能量保留增加。
This experiment investigated the effects of dietary sea buckthorn pomace (SBP) supplementation on energy partitioning, substrate oxidation, and carbon and nitrogen balance in ram lambs. A total of 40 1/2 Dorper x 1/2 thin-tailed Han male lambs (BW = 22.2 +/- 0.92 kg, Age = 120 +/- 11 d; mean +/- SD) were randomly selected and equally divided into 4 groups. Diets were formulated isonitrogenously and contained different levels of SBP: 1) 0% SBP (control); 2) 7.8% dry matter (DM) SBP (8SBP); 3) 16.0% DM SBP (16SBP); and 4) 23.5% DM SBP (24SBP). The lambs were fed in individual stalls for 50 d and then determine nutrients digestibility. Gas exchange was then determined using a polycarbonate head box designed for small ruminants. DM and crude protein (CP) intake were greater for 24SBP (2.1 and 0.29 kg/d) than for control (1.28 and 0.24 kg/d) or 8SBP (1.84 and 0.24 kg/d). The treatment diets did not result in difference in metabolisable energy (ME) intake and heat production (HP). Energy and nitrogen loss in feces were higher for lambs fed the 24SBP than for other groups. The nutrient oxidation contribution to the heat production (OXP/HPx, OXCHO/HPx, and OXF/HPx) was not affected by treatment diets (P > 0.228). The highest values of retention of energy in fat (REfat) and total tissue (REtotal) were observed in 16SBP diet. The results indicated that sea buckthorn pomace can be incorporated in the diet of ram lambs, and inclusion of 16% SBP in the diet had no detrimental effect on energy metabolism and resulted in an increase in energy retention.