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首页> 外文期刊>Animal Feed Science and Technology >The use of glycerine in rations for light lamb during the fattening period.
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The use of glycerine in rations for light lamb during the fattening period.

机译：在育肥期间，应在日粮中使用甘油，以减轻羊羔的体重。

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One hundred and two Ripollesa weaned lambs (15 +or- 1.7 kg BW; 45 +or- 7.9 days of age) from two different lambing periods (Period 1 n = 39 and Period 2 n = 63) were used to study three different diets that included 0 g/kg, 50 g/kg or 100 g/kg glycerine in the concentrate. Lambs were fed concentrate (180 g/kg CP, 18.7 MJ of GE/kg DM) and barley straw ad libitum until the slaughter weight (25 SEM = 1.4 kg BW). Lambs were distributed in 9 pens per period in groups of 4 or 5 lambs (Period 1) and 7 lambs (Period 2) according to their weaning BW and age, and BW and concentrate and straw intakes as well as water consumption were measured weekly. Blood samples to determine glucose and insulin concentrations were obtained at 2 and 4 wk of the study, and carcass weight was recorded at the slaughterhouse. At slaughterhouse a sample of rumen mucosa of the caudal sac of the ventral zone was obtained to determine the number of rumen papillae, and a sample of the Longissimus dorsi from ten female lambs per treatment was obtained to analyse fatty acid profile of the meat. None of the parameters measured in lambs were affected by the glycerine content of concentrates. The only differences observed were in meat fatty acid composition. The C12 (P = 0.08) and C17 (P = 0.06) tended to be greater in lambs fed concentrates with glycerine than without glycerine. In contrast, total amount of C18:1 cis in muscle tended (P = 0.10) to be greater in lambs consuming a concentrate without glycerine than in lambs receiving concentrates with glycerine. Glycerine can be included as an ingredient in lamb diets during their fattening period without impairing the growth of lambs, without reducing concentrate or straw intake, and without affecting blood metabolites, rumen papillae development, and the main fatty acids of L. dorsi muscle.
机译：使用来自两个不同产羔时期（时期1 n = 39和时期2 n = 63）的102只Ripollesa断奶羔羊（15 +或-1.7 kg体重，45 +或-7.9日龄）来研究三种不同的饮食浓缩物中包括0 g / kg，50 g / kg或100 g / kg甘油。给羔羊饲喂浓缩液（180 g / kg CP，18.7 MJ GE / kg DM）和大麦秸秆，直至屠宰体重（25 SEM = 1.4 kg BW）。根据断奶的体重和年龄，将羔羊每期以9笔分配为4或5只羔羊（时段1）和7只羔羊（时段2），并每周测量体重，精矿和秸秆摄入量以及水的消耗量。在研究的第2周和第4周获取血样以确定葡萄糖和胰岛素浓度，并在屠宰场记录car体重量。在屠宰场中，获取腹侧尾囊瘤胃黏膜样品以确定瘤胃乳头的数量，并从每次处理中从十只雌性羔羊中获得 Longissimus dorsi 样品以分析脂肪肉的酸度。羊肉中测得的参数均不受浓缩物中甘油含量的影响。观察到的唯一差异是肉类脂肪酸组成。饲喂含甘油浓缩肉的羔羊的C12（ P = 0.08）和C17（ P = 0.06）倾向于比不含甘油的浓缩羊肉大。相反，在食用不含甘油的浓缩物的羔羊中，肌肉中C18：1顺式的总量倾向于（ P = 0.10）大于接受甘油的浓缩物的羔羊。甘油可在羔羊饮食的增肥期中作为一种成分加入，而不会损害羔羊的生长，不会减少精矿或秸秆的摄入，也不会影响血液代谢产物，瘤胃乳头的发育和 L的主要脂肪酸。背肌。

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