共查询到19条相似文献，搜索用时 187 毫秒
1.
2.
本试验旨在研究猪日粮中添加丙酸铬对其生产性能和胴体品质的影响.将100头初始体重为30kg左右的商品猪随机分成2个处理组,其中对照组不添加丙酸铬,试验组猪日粮中添加200μg/kg的丙酸铬.猪的生长育成共分成3个阶段.试验结果显示,丙酸铬的添加对猪的生产性能影响甚微,但却可明显改善猪肉胴体品质. 相似文献
3.
4.
肉碱与甜菜碱对育肥猪胴体、肉品质及肝脏营养成分的影响 总被引：3，自引：1，他引：2
本试验采用两因素3×3析因设计,研究了日粮中添加3个内碱水平(0、50、100 mg/kg)和3个甜菜碱水平(0、1000、1500 mg/kg)对杜长大三元杂交育肥猪胴体品质、肉品质和肝脏营养成分的影响.选择90头体重约为100kg的杜长大三元杂交肥育猪,按体重相近、性别比例相同原则,随机分为9处理组,每组10头.其中第1组为对照组,喂基础日粮;第2～9组为试验组,喂试验日粮.试验期为30 d.结果表明:肉碱添加水平对育肥猪背膘厚、眼肌面积、大理石纹和肝脏蛋白质含量影响显著(P＜0.05).甜菜碱添加水平对育肥猪背膘厚、肉色评分和肝脏粗脂肪含量影响显著(P＜0.05),并证实了肉碱与甜菜碱时育肥猪的胴体组成、肉质和肝脏营养成分的影响不存在交互效应. 相似文献
5.
甜菜碱对育肥猪生长性能、胴体品质和肉质的影响 总被引：3，自引：1，他引：2
试验选用体重70 kg左右、日龄相近、体质良好的杜长大三元杂交猪45头,采用单因子随机设计,分为对照组、试验1、2、3、4组,每组3个重复,分别饲喂添加0、500、1000、1500、2000 mg/kg甜菜碱的日粮,试验期30 d,研究甜菜碱对肥育猪生长性能、胴体品质和肉质的影响。结果表明,与对照组相比,试验2、3、4组日均采食量、日增重、屠宰率、瘦肉率、肉色评分、大理石评分显著提高(P<0.05),背膘厚度显著降低(P<0.05),试验1组各项指标有所改善,但效果不显著(P>0.05),本试验表明,饲料中添加甜菜碱可提高育肥猪生长性能,改善胴体品质和肉品质,其中添加1500、2000 mg/kg的甜菜碱效果较为理想。 相似文献
6.
饲粮同时添加甜菜碱和维生素E对猪生长表现及胴体品质的影响 总被引：3，自引：0，他引：3
为研究在饲粮中同时添加维生素E(VE)和甜菜碱对杜烟猪生长表现和胴体品质的影响,选择2005年春季出生、胎次相近、体重在25kg左右的10周龄杜烟仔猪48头,随机分为2组,对照组16头,饲喂基础饲粮;试验组32头,饲粮为基础饲粮中同时添加VE200mg/kg和甜菜碱1500mg/kg。当试验猪达100kg左右时试验结束(试验期对照组为98d,试验组88d)。结果表明,试验组日增重比对照组增加13.09%(P<0.01);料重比降低10.65%;背膘厚降低29.76%(P<0.05);背最长肌剪切力降低10.37%(P<0.05),肌内脂肪含量增加30.67%(P<0.05),而对其它胴体、肉质性状、背最长肌氨基酸组成、鲜味氨基酸含量和必需氨基酸含量影响不大。 相似文献
7.
为了研究低聚木糖(XOS)对生长肥育猪生长性能、胴体性状和肉品质的影响,试验选取平均体重为30 kg左右的三元杂交猪80头,随机分为8组,每组10头,公、母各占1/2,单栏饲养。试验设对照组、抗生素组,3065 kg阶段100、250和500 g/t XOS组,以及30100 kg阶段100、250和500 g/t XOS组。分别于试验开始和结束时记录每头猪的空腹体重及采食量,计算平均日采食量(ADFI)、平均日增重(ADG)和料重比(F/G);于试猪平均体重达100 kg时屠宰采样,测定胴体性状、肉品质和肌肉化学成分。结果表明:与对照组或抗生素组相比,饲粮添加不同剂量的XOS对生长肥育猪的ADFI、ADG、F/G、胴体性状和肉品质均无显著影响(P0.05);3065 kg阶段添加250 g/t XOS可显著增加脾脏指数以及背最长肌粗蛋白质含量(P0.05);30100 kg阶段添加500 g/t XOS可显著增加脾脏指数及背最长肌粗蛋白质含量(P0.05)。综上所述,饲粮添加不同剂量的XOS虽对生长肥育猪的ADFI、ADG、F/G、胴体性状和肉品质等指标影响不显著,但可通过增加肌肉粗蛋白质含量而改善猪肉营养价值;以30100 kg阶段添加500 g/t XOS效果较佳。 相似文献
8.
选用70 kg左右健康无病的杜长大三元杂交育肥猪32头,随机分到2个组中,每组4个重复,每个重复4头。对照组饲喂常规日粮,试验组在对照组日粮基础上添加450 mg/kg复合肉质改良剂,研究复合肉质改良剂对肥育猪生产性能、肉质的影响。生长试验从70 kg左右开始,100 kg左右结束,测定猪只的生产性能;试验结束时从每个重复中选1头体重接近100 kg的猪只进行屠宰,测定猪只的胴体、肉质指标。试验结果:试验组与对照组猪只的日增重、日采食量以及料重比均未达到显著差异(P>0.05),但试验组较对照组的饲料利用效率提高了5.50%;日粮中添加复合肉质改良剂显著降低猪肉滴水损失、失水率(P<0.05),分别较对照组低11.19和2.06个百分点,其余胴体品质和肉质指标也不同程度地提高。结果表明,肥育猪日粮添加由茶多酚、牛至油组成的复合肉质改良剂不仅具有提高肥育猪饲料利用效率的趋势,而且可改善猪肉胴体品质和肉质。 相似文献
9.
10.
本试验通过研究β-葡聚糖对生长育肥猪生长性能、胴体性能和肉品质的影响,旨在探明β-葡聚糖在生长育肥猪饲粮中的应用效果及适宜添加量。试验采用单因子试验设计,选取96头20 kg左右的健康"杜×长×大"猪,按体重和性别比例随机分为4个组,每组6个重复,每个重复4头猪。对照组饲喂基础饲粮,试验组在基础饲粮中分别添加50、100和200 mg/kgβ-葡聚糖。试验期为103 d。结果表明:1)与对照组相比,饲粮添加100 mg/kgβ-葡聚糖显著提高生长育肥猪平均日增重(P0.05),显著降低料重比(P0.05),显著改善饲粮干物质、能量和粗蛋白质消化率(P0.05);2)与对照组相比,饲粮添加100 mg/kgβ-葡聚糖显著提高猪只胴体长和肌肉p H(P0.05),显著降低肌肉滴水损失(P0.05),显著改善肉色(P0.05),同时显著提高肌肉中肌苷酸含量(P0.05),改变猪肉中饱和脂肪酸和单不饱和脂肪酸的组成比例,从而改善肉的风味。综上,饲粮中添加100 mg/kgβ-葡聚糖可改善生长育肥猪的生长性能,提高养分消化率,提高胴体长,改善猪肉品质。 相似文献
11.
12.
Four diets were formulated with protein from fishmeal (FM), groundnut cake (GC), ensiled sweet potato (Ipomoea batatas L. (Lam.)) leaves (SP) or ensiled sweet potato leaves with lysine (SPL). In experiment 1, 24 crossbred (Large White x Mong Cai) growing pigs were allocated randomly by sex into four groups of six pigs and given one of four diets. Experiment 2 was conducted using 16 crossbred pigs (Large White x Mong Cai) at four farms. On each farm, pigs were allocated to two experimental groups. One group was fed the FM diet and the other group the SPL diet. In experiment 1, the daily live weight gains (DLWG) were significantly higher (p < 0.05) for the FM and SPL treatments (542 and 536 g/day, respectively) than for the GC and SP treatments (464 and 482 g/day, respectively). Feed intake was highest (2.0 kg/day) for the SPL and lowest (1.7 kg/day) for the GC treatment (p < 0.05) and feed conversion ratio (FCR) was highest (3.8 kg/kg gain) for SP and lowest (3.5 kg/kg gain) for FM (p < 0.05). There were no significant differences for carcase measurements among diets (p > 0.05). The feed cost per kg live weight gain was lowest for the SP and SPL diets compared to the FM and GC diets. The results of experiment 2 show that there were no significant differences in feed intake, DLWG and FCR between the two diets (p > 0.05). In conclusion, sweet potato leaves can replace fishmeal and groundnut cake in traditional Vietnamese diets for growing pigs. 相似文献
13.
地肤草粉喂猪效果及其对血相的影响 总被引：3，自引：0，他引：3
10头 56kg左右的长白×本地杂交猪 ,随机平分为 2组 ,即对照组与试验组。对照组喂玉米 豆粕 鱼粉型基础日粮 ;试验组用地肤草粉代替 1 0 %的基础日粮。结果表明 ,平均日增重对照组与试验组分别为 664 4g和 648 9g ;料重比分别为 3 2 5和 3 37,差异均不显著 (P >0 0 5) ,但试验组每千克增重饲料成本下降 4 36%。血相检测结果表明 ,试验组供试猪血相指标变化在正常生理值范围内。猪日粮中使用 1 0 %的地肤草粉是可行的 相似文献
14.
本研究通过断奶仔猪、生长猪和肥育猪3个试验研究了日粮添加洛克沙胂对猪生产性能及血液指标的影响。试验分别选择96头杜×长×大三元杂交断奶仔猪(8.29±0.99)kg、生长猪(32.68±3.43)kg和肥育猪(62.74±8.89)kg,随机分为4个处理,每个处理6个重复,每个重复4头猪,公母各半。处理1为对照组,日粮中不添加洛克沙胂,处理2、3和4分别在日粮中添加50、100 mg/kg和150 mg/kg洛克沙胂。基础日粮为玉米-豆粕型,各处理日粮营养水平均为等能量、等蛋白。结果表明:日粮中添加洛克沙胂能显著提高断奶仔猪与生长猪日增重和饲料转化效率(P<0.05),减少仔猪腹泻率(P<0.01)。但对肥育猪增重效果不明显(P>0.05);日粮中添加洛克沙胂使动物血红蛋白、肌酐和谷草转氨酶含量升高,白蛋白含量降低(P<0.05)。表明洛克沙胂对猪具有一定的促生长效果,可增加动物血液运氧能力,但同时有可能对动物肝脏、肾脏造成一定损伤。 相似文献
15.
姜黄素替代育肥猪饲粮中喹烯酮对抗体合成和猪肉品质的影响 总被引：1，自引：0，他引：1
试验研究了姜黄素替代猪饲粮中抗菌药物喹烯酮对抗体的合成和猪肉品质的影响。选取64头体重约70 kg的杜×长×大三元杂交猪,将其分为4组,每组16头猪。在基础饲粮中添加50 mg/kg喹烯酮后,饲喂第1组(对照组)猪;在基础饲粮中分别添加200、3004、00 mg/kg姜黄素后,相应地饲喂第23、4、组猪,饲养试验期40 d。试验结果表明:姜黄素替代育肥猪饲粮中喹烯酮,对猪体健康无不良影响;能改善猪的肉品质量;不同程度地提高猪的病原抗体效价。育肥猪饲粮中姜黄素的适宜添加量为400 mg/kg。 相似文献
16.
为了研究饲粮中添加蛋氨酸铜与硫酸铜对生长猪生长性能、养分消化率、血清铜锌含量及粪铜锌排泄量的影响。选择体重为17．17±2．34kg（P〉0．05）的二元杂交（长×大）生长阉公猪30头进行试验,试猪按完全随机区组设计,依体重和窝别随机分为5个处理,每个处理3个重复,每个重复2头猪,分别饲喂10、150、250mg／kg蛋氨酸铜和150、250mg／kg硫酸铜,试验期30d。结果表明：饲喂蛋氨酸铜组ADG、F／G及表观养分消化率具有明显的优势;血清铜含量随饲粮铜水平的提高而发生显著变化,而高铜组组间血清锌差异不显著;蛋氨酸组粪铜排泄量比硫酸铜组粪铜排泄量显著降低。说明：添加中等水平的有机蛋氨酸铜吸收利用率比高剂量硫酸铜高,且可减少粪铜、锌的排泄。 相似文献
17.
Effect of recombinant porcine somatotropin on energy and protein utilization by growing pigs: interaction with capacity for lean tissue growth. 总被引：1，自引：0，他引：1
Three litters of four pigs from each of four different groups were used to evaluate the effect of porcine somatotropin (pST) on growth performance, body gain composition, energy and N metabolism, and in vitro cytochrome oxydase (final enzyme of the respiratory chain) activity of tissues. The four groups included boars from a synthetic line (SG1) or the Large White breed (SG2) and barrows from the Large White breed (SG3) or crossbred between Large White and Meishan breeds (SG4). Inherent capacity for daily lean tissue growth (LTG) decreased from SG1 to SG4. Within a litter, one pig was slaughtered and dissected at the beginning of the experiment (55 kg BW) and the three others were fed the same daily supply of protein and amino acids (26 g of lysine/d) but relative daily energy levels were either 113 (without pST: E1/0), 100 (3 mg of pST/d: E2/pST) or 87 (3 mg of pST/d: E3/pST). The 100 energy level corresponded to the ad libitum intake of E2/pST pigs. Two energy and N balances were carried out in respiration chambers during the experimental period. Pigs were slaughtered and dissected at approximately 95 kg BW and composition of gain was estimated using the comparative slaughter technique. In E1/0 pigs, daily BW, lean, and N gain were affected (P less than .01) by group; 566, 471, 374, and 315 g/d of lean tissue gain in SG1, SG2, SG3, and SG4 pigs, respectively. At high ME intake (E2/pST vs E1/0), pST increased daily BW (+14%), lean (+27%), or N (+26%) gain and reduced adipose tissue (-50%) gain, but the pST effect was inversely related to LTG: for N, the improvement was 2.8, 7.1, 7.0, and 11.1 g/d in SG1, SG2, SG3, and SG4 groups, respectively. Energy restriction (E3/pST vs E2/pST) reduced (P less than .001) adipose tissue gain in all groups but did not affect lean tissue or N gains in SG1, SG2, and SG3 pigs. In the pST-treated pigs of the SG4 group, the lean tissue or N gains were reduced (P less than .01) by energy restriction. Energy restriction combined with pST treatment (E3/pST) led to negligible amounts of fat deposited (40 g/d for SG1 + SG2 + SG3 pigs) and a gain:feed ratio higher than 500 g/kg (580 in SG1 pigs). The increased heat production measured in pST-treated pigs was due to its maintenance component: 275 vs 257 kcal of ME.kg BW-.60.d-1 (P less than .01).(ABSTRACT TRUNCATED AT 400 WORDS) 相似文献
18.
Most feedstuffs contain antinutritive factors (ANF) such as insoluble fibers, lignins, tannins, and lectins. Intake of these ANF has the ability to reduce nutrient digestibility and to increase endogenous protein losses, such as through increased intestinal mucus secretion. The objective of this experiment was to determine the apparent ileal digestibilities (AID) of AA of 6 ANF-enriched diets to estimate endogenous protein loss associated with these ingredients in diets for young pigs. Forty-two 10-kg BW pigs fitted with a simple T-cannula at the distal ileum were randomly assigned to 1 of 7 casein-based diets with: no supplement (control), 100 g/kg of canola meal (CM), 100 g/kg of wheat bran (WB), 150 g/kg of barley (BR), 22.5 g/kg of lignin (LG), 15 g/kg of kidney beans [as a lectin (LE) source], and 15 g/kg of tannins (TN). All diets were formulated to be similar in N, indispensable AA, and caloric contents. After a 7-d adaptation to the test diets, N balance was conducted for 5 d, followed by 24 h of collection of digesta for analyses of AA. Pigs fed BR had 17% lower ADG and 15% lower feed conversion ratio (P < 0.05) compared with control and CM pigs. Pigs fed diets containing WB and BR had lower N retention as a percentage of absorbed N compared with all other groups (P = 0.03). The AID for CP was lower in BR, WB, and LE pigs compared with control. Of the AA, AID of Thr was notably lowest in BR, WB, and TN pigs (P < 0.05). The standardized ileal digestibility was lower in WB and BR pigs for most indispensable AA. Altogether, these data suggest that hemicellulose fiber, at concentrations typical in commercial swine diets, reduces AID of AA by increasing endogenous losses. Understanding the differential effects of ANF on endogenous losses of individual dietary AA will improve the accuracy of diet formulation. 相似文献
19.
低聚木糖对生长肥育猪血浆生化参数和肌肉脂肪酸组成的影响 总被引：1，自引：0，他引：1
本试验旨在研究低聚木糖(XOS)对生长肥育猪血浆生化参数和肌肉脂肪酸组成的影响。选取70日龄、平均体重约为30kg的杜×长×大三元杂交猪110头,随机分为11组,每组10头(公母各占1/2),单栏饲养。试验设对照组(饲喂基础饲粮),抗生素组(饲喂在基础饲粮中添加0.04kg/t速大肥、0.2kg/t抗敌素的饲粮),30~65kg阶段100、250和500g/t XOS添加组(在30~65kg阶段分别饲喂在基础饲粮中添加100、250和500g/t XOS的饲粮,在66~100kg阶段均饲喂基础饲粮),66~100kg阶段100、250和500g/t XOS添加组(在30~65kg阶段均饲喂基础饲粮,在66~100kg阶段分别饲喂在基础饲粮中添加100、250和500g/t XOS的饲粮)以及30~100kg阶段100、250和500g/t XOS添加组(分别饲喂在基础饲粮中添加100、250和500g/t XOS的饲粮)。于试猪平均体重达100kg(约170日龄)时,前腔静脉采血,离心分离血浆,测定生化参数;屠宰后取背最长肌和股二头肌样品,测定其脂肪酸组成。结果表明:与对照组相比,30~65kg阶段,饲粮添加100或500g/t XOS可显著降低股二头肌中十七烷酸(C17∶0)含量(P0.05);66~100kg阶段,饲粮添加250g/t XOS可显著增加股二头肌中饱和脂肪酸(SFA)+单不饱和脂肪酸(MUFA)含量(P0.05),添加100或500g/t XOS可显著增加股二头肌中花生烯酸(C20∶1)含量(P0.05);30~100kg阶段,饲粮添加100g/t XOS可显著增加背最长肌中油酸/亚油酸以及股二头肌中C20∶1、MUFA和SFA+MUFA含量(P0.05),添加100或250g/t XOS可显著降低血浆总胆固醇浓度(P0.05),添加500g/t XOS可显著增加血浆高密度脂蛋白-胆固醇浓度(P0.05)。综上所述,饲粮添加一定剂量的XOS可通过调控与脂代谢相关的血浆生化参数、增加肌肉中MUFA和SFA+MUFA含量而改善猪肉的风味和营养价值,且以30~100kg阶段添加100g/t XOS为最佳。 相似文献