Fattening performance,slaughter, carcass and meat quality traits of Karayaka lambs

In order to verify the fattening performance, slaughter and carcass characteristics and to investigate the changes in some meat quality traits of Karayaka lambs weaned at 3 months of age, 39 lambs (23 males and 16 females) were used as experimental animals. The lambs were fed a concentrate mixture and alfalfa hay (120 and 168 g crude protein and 2,700 and 1,951 ME/kg, respectively) for a period of 60 days of fattening period. Male lambs were superior (p < 0.05) to female lambs in terms of daily weight gain (270.4 vs. 205.4 g; SEM = 9.46), hot and cold carcass weights (16.7 and 16.0 vs. 14.1 and 13.4 kg, respectively; SEM = 0.35), intra-muscular fat ratios (1.9% vs. 2.5%; SEM = 0.12) and dripping loss of semitendinosus muscle 3 days postmortem (8.1% vs. 10.2%; SEM = 0.36). The relative weights of some organs, the meat quality traits (pH, cooking loss, shear force, CIELab colour characteristics) and proximate analyses (dry matter, protein and ash) of longissimus dorsi and semitendinosus muscle samples from lambs were not affected by sex (p > 0.05). Dripping loss, pH and colour characteristics were affected by storage time (p < 0.05). These results provide a basic understanding of performance and meat quality of Karayaka sheep which may have potentials in improving sheep production using an indigenous sheep breed in Turkey.     

果胶酶对肉仔鸡生长性能及屠体性状的影响

试验选用 1日龄商品艾维茵肉仔鸡 4 32只。完全随机分为 2 4圈 ,每圈 18只 ,地面平养 5 4天。试验分为 4个处理 ,每个处理 6圈 ,分别饲喂 4种不同的日粮 ,即对照组 (基础日粮组 )、添加金霉素 5 0mg/kg日粮组、添加果胶酶 5 0 0mg/kg日粮组、添加果胶酶 10 0 0mg/kg日粮组。试验结果表明 ,果胶酶在肉仔鸡饲养前 2 1日龄的促生长效果显著 ,平均日增重 (ADG)和平均日采食量 (ADFI)均比对照组有显著增加 (P <0 .0 5 ) ,饲料转化率显著提高 (P <0 .0 5 ) ,与抗生素效果相当 ;2 1～ 4 2日龄时仅 5 0 0mg/kg果胶酶组出现ADFI比对照组显著增加 (P <0 .0 5 ) ,但饲料转化率较其它各组显著降低 (P <0 .0 5 )。 4 2～ 5 4日龄时 5 0 0mg/kg果胶酶组ADG显著高于抗生素组 (P <0 .0 5 ) ,饲料转化率显著提高 (P <0 .0 5 )。饲养全期 ,添加抗生素或果胶酶组ADG与对照组差异显著 (P <0 .0 5 ) ,ADFI仅5 0 0mg/kg果胶酶组与对照组有显著差异 (P <0 .0 5 )。     

Carcass characteristics of Awassi ram lambs slaughtered at different weights

Thirty Awassi ram lambs were used to study the effects of slaughter weight on carcass characteristics. Lambs were slaughtered at three different live weights (20, 30, and 40 kg). Empty body weight, hot and cold carcass weights and non-carcass components increased (P < 0.001) at a steady rate between all slaughter weights. Body length, leg length, maximum shoulder width, width behind shoulders and gigot width increased (P < 0.001) as slaughter weight increased from 20 to 40 kg. Linear dimensions measured on the surface of the M. Longissimus also increased (P < 0.001) with increasing slaughter weight. The ratio between width and depth of the longissimus muscle decreased (P < 0.01) at a steady rate between 20 and 40 kg indicating that the muscle increased more in depth than width. Dressing-out percentage was higher (P < 0.001) for lambs slaughtered at 30 kg live weight compared to other weights. Total lean and total bone decreased (P < 0.05) as a percent of cold carcass weight while total fat, subcutaneous and intermuscular fat percentages increased (P < 0.05) with increasing weight. Subcutaneous fat percentage was not affected by increasing body weight between 20 and 30 kg. Intermuscular fat percent was higher in all cuts except the leg where subcutaneous fat % was higher. Muscle to bone ratio increased (P < 0.001) while muscle to fat ratio decreased (P < 0.001) with increasing body weight in the four major cuts and the whole carcass. In conclusion, slaughtering Awassi ram lambs at weights up to 30 kg resulted in higher dressing-out percentage and better carcass characteristics than ram lambs slaughtered at heavier weights.     

Fattening performance and carcass traits of Chios male lambs fed under traditional and intensive feeding conditions

This study was carried out to compare the fattening performance and carcass traits of Chios male lambs fed under traditional and intensive feeding conditions. In the study, a total of 34 lambs were randomly separated into traditional (T) and intensive (I) groups in equal numbers. Lambs in group T were fed on ration prepared in local style and grazed in olive grove for 8 h/day. On the other hand, lambs in group I were fed on 255 g alfalfa hay animal⁻¹ day⁻¹ and ad libitum mixed feed. After a period of 8 weeks, lambs were transported to the slaughterhouse. The results showed that Chios lambs fed under intensive conditions has better performance and produced heavier carcass compared to those fed under traditional conditions. However, consumption of concentrate feed mixture was about twice as much in group I as in group T. Total feed consumption and feed conversion ratio was similar in each group. The values of carcass traits of lambs in group I were found to be significantly higher than those of group T. On the other hand, carcass fat thickness was slightly lower in group T. Traditional condition is considered to respond to better to consumer demands for lean lamb carcass.     

生长肥育猪性别对甲基吡啶铬使用效果的影响

选择 48头平均体重为 30.7kg± 3.1kg的三元杂交健康生长猪，按单因子随机区组设计分为两个处理，分别饲喂未加甲基吡啶铬的日粮和添加 0.05％甲基吡啶铬的日粮。试验结果显示：同对照组青年母猪相比，试验组青年母猪的平均日增重（ ADG）（ P=0.27）、饲料转化效率（ FCR）（ P=0.08）和瘦肉率（ P=0.20）得到不同程度的提高和改善；同对照组阉公猪相比，试验组肥育阉公猪的 ADG和 FCR受到显著（ P=0.04）抑制，瘦肉率表现出降低的趋势（ P=0.27）。结论：性别是影响生长肥育猪对甲基吡啶铬使用效果的一个重要因素。     

湘岭猪不同世代、不同屠宰体重胴体性状和肌肉品质测定分析

试验旨在探讨不同世代、不同屠宰体重湘岭猪胴体性状和肌肉品质的差异.试验选择体重140 kg左右的湘岭猪Ⅰ世代阉公猪4头(组4),进行屠宰测定和肉质评定.另选择前期屠宰的零世代14头湘岭猪的屠宰测定数据作为对照,按宰前活重分为3组,分别为90 kg组(组1)、100 kg组(组2)、125 kg组(组3).结果表明:1)...     

Effect of zeranol implants in ram and wether lambs on performance traits, carcass characteristics, and subprimal cut yields and distribution.

In two separate 2 x 2 factorial arrangements, 69 male, crossbred lambs were allotted randomly to the following treatments: 1) nonimplanted (NI) rams, 2) implanted (I) rams, 3) NI wethers, and 4) I wethers. In Trial 1, 36 lambs were allotted to treatment groups at birth (n = 9) and I lambs were implanted with 12 mg of zeranol between 1 and 3 d of age and again at weaning (average age of 62 d). Lambs were slaughtered at three time-constant end points of 78, 93, and 107 d on feed postweaning (average age of 155 d). Rams grew faster postweaning, were more efficient in their feed conversion, were heavier at slaughter, and had lower numerical yield grades than did wethers (P less than .05). Implanted lambs tended (P = .08) to grow faster and were (P less than .05) more efficient in their feed conversion than NI lambs. Rams produced heavier (P less than .05) trimmed subprimal shoulders, loins, and legs and had (P less than .05) a higher percentage of their carcass weight in the subprimal shoulder than did wethers. During Trial 2, NI rams (n = 8), I rams (n = 8), NI wethers (n = 8), and I wethers (n = 9) were allotted to treatment groups, and I lambs were implanted at average ages of 14, 55, and 98 d. After weaning, lambs were weighed every 14 d and were slaughtered 7 d after reaching a minimum weight of 50 kg (average age of 148 d).(ABSTRACT TRUNCATED AT 250 WORDS)     

不同屠宰体重商品猪胴体性能、肉品质及相关关系研究

测定了体重70～140 kg阶段120头商品猪的胴体品质和肉质特性,分析了商品猪胴体性能、肉质性状随体重的变化规律及相关程度,为确定适宜上市屠宰体重提供依据。结果表明:70～100 kg体重阶段,随体重增大,平均背膘厚、眼肌面积、皮脂率、肉色和大理石纹显著升高,后腿比例、瘦肉率、骨骼率、L和b值显著降低。胴体和肉质性状间相关程度有强有弱,相关系数有正有负。相同性状间有较强的正相关,相反性状间有较强的负相关。在70～140 kg阶段,胴体重、胴体直长、胴体斜长、眼肌面积、平均背膘厚、瘦肉率、皮脂率、骨骼率、肉色和L值与体重之间呈显著的回归关系,其他指标与体重间的线性相关不显著。     

Effects of different grazing and feeding periods on performance and carcass traits of beef steers

Over three consecutive years, 180 (60/yr) fall-born steer calves were weaned in May (average initial BW = 238 kg, SD = 36.2 kg) and allocated to one of three groups: 1) calf-fed steers that entered the feedlot at weaning; 2) short yearlings that grazed irrigated pasture for another 4 mo and entered the feedlot in September; and 3) long yearlings that grazed with short yearlings during the summer, remained on annual California foothills range through the fall, winter, and spring, and entered the feedlot the following May. All steers were fed until the average group backfat (BF), determined by ultrasound, reached 11 to 12 mm. On pasture, short- and long-yearling steers gained weight in the summer; long yearlings then slightly lost weight in the fall and winter, and then gained weight again the following spring. Average days in the feedlot were 188, 158, and 94 (P < 0.10) for calves, short yearlings, and long yearlings, respectively. Feedlot DMI increased with age (and weight) at feedlot entry, with no difference among groups in gain:feed ratio. The gain of BF was nil on pasture, even when animals were gaining weight, and then increased rapidly when animals were placed on a high-energy diet. Final body weights were heaviest (P < 0.10) in long yearlings, followed by short yearlings and then calves, indicating that a prolonged growing period increases the apparent mature size of the animal. Moreover, total carcass fat contents and percentage of Choice or above were all lower (P < 0.10) in cattle that were older at feedlot entry (i.e., long yearlings) compared with the other groups. In conclusion, increasing the backgrounding period decreased time and total concentrate requirements in the feedlot of Angus-Hereford steers. Older cattle reached 10 mm of BF at heavier weights. Grazing animals gained weight without increasing BF; however, BF increased rapidly in the feedlot. Prolonged grazing may decrease quality grade, either by impairing the ability of the animal to deposit intramuscular fat or by decreasing the time during which dietary energy supply is adequate for intramuscular fat deposition to occur.     

Fatty acid profile of hair lambs and their crossbreds slaughtered at different weights

This study aims to investigate the effect of breed and slaughter weight on fatty the acid profile of the Longissimus dorsi muscle in lambs. Twenty-four Santa Inês (SI), 24.5 Ile de France × 0.5 Santa Inês (Ile × SI) and 12.5 Texel × 0.5 Santa Inês (Te × SI), slaughtered at different weights (30, 35, 40, and 45 kg), were evaluated. The animals were reared with creep feeding to weaning and were feedlot finished, receiving a diet composed of 30% hay and 70% concentrate. The analyses of fatty acids were carried out on the Longissimus muscle of the 13th rib. The experiment was in a three by four factorial design. The total mean saturated fatty acid level was 44.88%, with 43.30% monounsaturated fats and 1.72% polyunsaturated. The major fatty acids found included oleic (43%), palmitic (22%), and stearic (18%). The concentration of desirable fatty acids varied from 61.56% to 66.78%, with Te × SI (66.78%) having the highest levels (P < 0.05). The slaughter weight affected (P < 0.05) the saturated and unsaturated (both mono and poly) fatty acid profiles. The 35-kg slaughter weight showed the most desirable fatty acid profile. The saturated myristic and stearic fatty acids decreased with an increase in the slaughter weight, but oleic acid increased. In the conditions of the present study, the meat from Santa Ines and Texel × Santa Ines lambs had fatty acid profiles more beneficial for human health due to the higher levels of unsaturated fatty acids.     

不同杂交组合肉羊生产性能和胴体性状的研究

本试验以无角道塞特、萨福克、德国关利奴为父本与夏寒F1代、夏寒F2代分别进行杂交,共分6个杂交组合,每个杂交组合20只母羊,每组分为4个重复,每个重复5只羊,同组各重复之间体重差异不显著。杂交后代集中育肥3个月,6月龄时进行屠宰,对各组羊生产性能、胴体性状进行测定。结果表明：整体来看各组羊与夏寒F2代杂交好于与夏寒F1代杂交,日增重德夏寒最高,料重比德夏寒最低,体型指标德夏寒最高,萨夏寒组最低,差异不显著（P〉0．05）。净肉重各组羊与夏寒F1代杂交稍大于与夏寒F2代杂交后代,代间差异显著（P〈0．05）,胴体产肉率差异不显著（．P〉0．05）,肉骨比差异显著（P〈0．05）,眼肌面积F1代与F2代差异不显著（P〉0．05）,F1代间及F2代间差异极显著（P〈O．01）,且以道夏寒最高,萨夏寒次之,德夏寒最低。结论：德夏寒杂交羊生长快、肉用体型好;道夏寒杂交羊产肉力高、肉质优。     

Effect of different protein sources on growth and carcass traits in growing-finishing pigs

Crossbred gilts (n = 180) and barrows (n = 180) from the Louisiana State University (LSU) Agricultural Center and the University of Illinois (UI) were used to compare the effect of soybean meal in swine diets, relative to other protein sources, on growth performance and carcass traits of growing-finishing pigs. Four replications with five pigs each at each location were allotted to nine dietary treatments: soybean meal control (SBM), crystalline AA (corn-AA), extruded soybeans (ESB), canola meal (CAN), peanut meal (PNT), sunflower meal (SFLR), ground peas, meat and bone meal (MBM), and poultry by-product meal (PLTY). The diets were formulated to meet or exceed NRC nutrient requirements and to have equal Lys:ME according to dietary phase and sex. Corn was the grain source in all diets and the protein sources were the sole source of supplemental protein in all diets except when AA were added to meet the requirement. Pigs (three per pen at each location) were killed at an average final BW of 114 kg in the LSU or UI Meat Science Laboratories. Pigs fed SBM had greater (P < 0.05) ADG than pigs fed the corn-AA, CAN, SFLR, MBM, or PLTY and greater (P < 0.05) ADFI relative to pigs fed the corn-AA, ESB, MBM, or PLTY. Gain:feed was decreased (P < 0.05) in pigs fed corn-AA or SFLR but increased (P < 0.05) in pigs fed ESB compared with pigs fed the SBM diet. Loin muscle area was decreased (P < 0.05) in pigs fed the corn-AA or MBM diets compared with pigs fed the SBM diet. Tenth-rib backfat thickness was greater (P < 0.10) in pigs fed corn-AA, peas, or MBM than in those fed SBM. The NPPC percentage acceptable quality lean and kilograms of lean were decreased (P < 0.10) in pigs fed corn-AA, peas, or MBM compared with those fed SBM. Results from this experiment suggest that pigs fed SBM have equal or better growth performance and carcass traits than pigs fed other protein sources.     

酵母硒和酵母铬对羔羊生长性能、胴体品质、血液激素及代谢产物的影响

文章旨在研究日粮添加酵母硒和酵母铬对羔羊生长性能、胴体品质、血液相关指标的影响。试验选择平均体重为(26±4.75)kg的呼伦贝尔羔羊60只,随机分为6组,每组10只,每只羊作为1个重复。日粮采用2×3多因子设计,其中2个酵母硒水平(0和0.3 mg/kg,以硒计)和3个酵母铬水平(0、0.2和0.3 mg/kg,以铬计),试验共进行12周。随着酵母铬添加水平的升高,羔羊采食量显著线性升高(P <0.05)。酵母硒组羔羊末重、总增重和日增重随酵母铬添加水平的升高显著线性升高(P <0.05)。无酵母硒组随酵母铬添加水平的升高,血浆葡萄糖水平显著线性升高(P <0.05)。血浆甘油三酯和胰岛素水平随酵母铬添加水平的升高表现为显著二次曲线效应(P <0.05)。酵母硒组血浆甘油三酯和胰岛素水平随酵母铬添加水平的升高显著线性升高(P <0.05),而血浆尿酸含量显著线性下降(P <0.05)。无酵母硒组随酵母铬添加水平的升高,眼肌面积和胴体蛋白沉积量显著线性升高(P <0.05)。酵母硒组添加酵母铬对羔羊胴体相关指标均具有显著影响(P <0.05),其中屠体重、热胴体和冷胴体重、眼肌面积和能量沉积量随酵母铬添加水平表现为显著二次曲线效应(P <0.05),而脂肪含量和脂肪沉积量显著线性降低(P <0.05)。综上所述,硒酵母与铬酵母联合使用可以提高羔羊生产性能和改善胴体组成,改善血液激素和代谢产物,从而提高羊肉品质。     

Physical,chemical and sensorial parameters for lambs of different groups,slaughtered at different weights

The object of this experiment was to study physicochemical and sensorial traits in the 11th and 13th ribs of 24 Santa Ines (SI), 24 1/2 Ile de France?×?1/2 Santa Inês (ILE?×?SI) and 8 1/2 Texel?×?1/2 Santa Inês (TE?×?SI), slaughtered at different weights (30, 35, 40 and 45 kg, respectively). Subjective measurements (marbling, colour and texture) were carried out on the Longissimus dorsi, as well as initial pH (0 h) and final pH (24 h) after slaughter. The experiment was in a 3?×?4 factorial design and analysed using general linear model and correlation procedures in SAS®. Breed group did not influence colour (3.32), shear force (3.57 kg-force (kgf)) or loss in cooking (24.05%) of the L. dorsi, but slaughter weight affected these, with stronger colour, tougher meat and greater loss in cooking as slaughter weight increased. For sensorial analysis, the L. dorsi were cut, identified and evaluated by 30 untrained judges using a linear scale. Significant differences were detected in preference (6.61 points), tenderness (6.32 points), succulence (6.33 points) and flavour (7.08 points) of the meat from different breed groups and slaughter weights. For preference, all meats were well accepted although the crossbred animals slaughtered at 45 kg were less acceptable.     

能量和蛋白来源对生长育肥猪生长性能、胴体性状和肉质的影响

试验旨在探讨饲粮能量和蛋白来源对育肥猪生长性能、养分消化率、血清生化指标、胴体性状以及肉质的影响。试验采用2×2因子试验设计,选取DLY育肥猪60头[平均体重(81±7.89) kg],随机分为4个处理,每个处理5个重复,每个重复3头猪。饲粮能量来源包括玉米和小麦,饲粮蛋白来源包括豆粕和菜粕。4个处理分别饲喂玉米-豆粕型、玉米-菜粕型、小麦-豆粕型、小麦-菜粕型饲粮,试验期28 d。结果表明:①4种饲粮对猪平均日采食量和平均日增重无显著影响(P0.05),但玉米豆粕组的料重比显著低于其余3组(P0.05)。②能量和蛋白来源显著影响养分的消化率。与小麦饲粮相比,玉米饲粮极显著提高了粗脂肪、干物质、灰分、钙和磷的消化率以及能量的利用率(P0.01);与豆粕饲粮相比,菜粕饲粮极显著提高了钙、磷的消化率和能量的利用率(P0.01),显著提高了干物质的消化率(P0.05)。③与豆粕饲粮相比,菜粕饲粮极显著提高了猪血清尿素氮的含量(P0.01);与小麦饲粮相比,玉米饲粮显著提高了猪血清总蛋白水平,显著降低了胰岛素样生长因子Ⅰ水平。④玉米豆粕组的眼肌面积显著高于玉米菜粕组(P0.05);与玉米菜粕组相比,小麦菜粕组显著降低了肌肉的蒸煮损失(P0.05),显著提高了肌内脂肪含量(P0.05)。由此可见,4种饲粮对育肥猪的生长性能无显著影响,但显著影响猪养分的表观消化率,且对育肥猪胴体性状、肉质有一定的影响。     

Effect of feeding olive-pulp ensiled with additives on feedlot performance and carcass attributes of fat-tailed lambs

Feed cost has a significant effect on the economic efficiency of feedlot lambs; therefore, the use of low-cost non-conventional feedstuffs, such as olive pulp (OP), has the potential to decrease the production costs. Because optimum inclusion of OP-treated silages has not been determined in feedlot lambs, an experiment was conducted to determine the effect of inclusion of OP ensiled with additives in the diet on the feedlot performance and carcass attributes of feedlot lambs. Ram lambs of Mehraban and Ghezel breeds (n?=?50 lambs per breed) were randomly allotted to 10 groups and fed with one of the nine diets containing OP silage or a control diet. Silage treatments were: (1) OP silage without additives (OPS), (2) OP ensiled with 8 % beet molasses and 0.4 % formic acid (OP-MF), and (3) OP ensiled with 8 % beet molasses, 0.4 % formic acid and 0.5 % urea (OP-MFU). The control diet contained 50 % alfalfa hay and 50 % barley grain. Three levels from each silage were chosen to replace the barley grain (10, 20, or 30 % dry matter basis). The lambs were slaughtered after 92 days, and the average daily gain (ADG), feed conversion ratio (FCR), and carcass characteristics were determined. Feeding OPS to fat-tailed lambs, at an inclusion level of 30 %, decreased the carcass dressing percentage, mainly as a result of decreased brisket percentage, but the ADG and FCR values were not adversely affected. Ghezel lambs had higher ADG than Mehraban lambs, but the visceral fat weight percentage, flap weight percentage, and back fat depth were higher in Mehraban. The crude protein content in the longissimus dorsi (LD) muscle was higher in Ghezel, but the dry matter percentage was higher in Mehraban (P?<?0.05). Other attributes were not significantly affected by breed (P?>?0.05). Most carcass characteristics, including major cuts, were not affected by OPS feeding; therefore, feeding OPS (up to 30 %) can be economical for feedlot lambs. Most carcass characteristics, including major cuts, were not affected by OPS levels used in this experiment; therefore, inclusion of OPS (up to 30 %) in the diet may reduce the cost of raising feedlot lambs. This also could help alleviate the problem of storage of OP in oil factories.     

谷胱甘肽对肉羊生长性能、屠宰性能及肉品质的影响

选择东北细毛羊×德国肉用美利奴的杂交一代肉羊12只,分成对照组、试验Ⅰ组和Ⅱ组,每组4只,研究谷胱甘肽对肉羊生长性能、屠宰性能及肉品质的影响。试验期60 d。结果表明:与对照组相比,谷胱甘肽显著提高了肉羊的日增重(P<0.05),试验Ⅰ组、Ⅱ组分别提高了14.6%和11.4%;降低了肉羊的料重比(P<0.05),试验Ⅰ组、Ⅱ组分别降低了11.0%和8.1%。试验Ⅰ组的净肉率和GR值显著高于对照组(P<0.05),Ⅱ组的宰前活重显著高于对照组(P<0.05);试验Ⅰ组肉的剪切力显著低于对照组(P<0.05);试验Ⅰ组、Ⅱ组的滴水损失显著低于对照组(P<0.05),而熟肉率显著高于对照组(P<0.05),且两试验组间差异不显著(P>0.05);各试验组宰后45 min内肉的pH没有显著差异(P>0.05),但试验Ⅰ组24 h的pH极显著地高于其他2组(P<0.01)。     

不同类型油脂对黑山羊生长、屠宰性能及胴体品质的影响

文章旨在研究日粮添加大豆油、葵花油和芝麻油对黑山羊生长和屠宰性能、养分摄入量及胴体品质的影响。试验选择健康、平均体重为(19.5±0.38)kg的黑山羊30头,随机分为3组,每组10头,每头羊作为1个重复。日粮采用以玉米、小麦、大麦和豆粕为主的全混合日粮,各组日粮中分别添加3%大豆油、葵花油和芝麻油,各组日粮主要营养成分保持一致,试验进行15周。结果 :葵花油组较大豆油和芝麻油组显著降低了干物质、有机物、粗蛋白质和中性洗涤纤维的摄入量(P <0.05),豆油和芝麻油组显著提高了黑山羊的增重(P <0.05),芝麻油组较大豆油和葵花油组料比最低(P <0.05)。大豆油和芝麻油组较葵花油组显著提高了黑山羊的空腹体重(P <0.05),但葵花油和芝麻油组较大豆油组显著提高了肉羊的热胴体、冷胴体重量(P <0.05)。芝麻油组较其他两组显著提高了肝重和肾脏脂肪含量(P <0.05),同时显著降低了胃重和肠系膜脂肪含量(P <0.05)。芝麻油组较大豆油和葵花油组显著提高了肉羊眼肌宽度、眼肌深度和眼肌面积(P <0.05)。结论 :日粮添加芝麻油可以降低黑山羊的料肉比,提高营养物质的摄入量和屠宰性能,改善眼肌质量。