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1.
祁玉秀 《青海畜牧兽医杂志》2013,43(4):19
实验选择120头40日龄断奶八眉猪三元杂交仔猪,分成三组。I组基础日粮添加土霉素200mg/kg,II组基础日粮添加氟哌酸300mg/kg,III组基础日粮添加中草药制剂1000mg/kg,进行40d对比试验,结果日增重III组较I组和II组分别提高13.52%和14.49%;腹泻率降低60.66%,53.85%。 相似文献
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3.
《中国畜牧杂志》2021,(9)
试验旨在研究枯草芽孢杆菌和富硒酵母对瑶鸡生长性能、屠宰性能、肉品质及舍内环境的影响。选取240只健康1日龄瑶鸡随机分为4组,对照组饲喂基础日粮,试验I、II、III组分别在基础日粮中添加200 mg/kg枯草芽孢杆菌和200 mg/kg富硒酵母、200 mg/kg枯草芽孢杆菌和400 mg/kg富硒酵母、400 mg/kg枯草芽孢杆菌和200 mg/kg富硒酵母,试验期120 d。结果显示:与对照组相比,试验I组瑶鸡平均日采食量和耗料增重比均降低(P0.05),试验I组瑶鸡死淘率也降低(P0.05);与对照组相比,试验II组瑶鸡屠宰率和半净膛率均提高(P0.05);与对照组相比,试验I、II组瑶鸡胸肌失水率、剪切力均降低(P0.05),试验I组pH降低(P0.05);与对照组相比,试验I～III组胸肌中硒含量均提高(P0.05);与对照组相比,各试验组舍内氨气和二氧化碳浓度无显著差异。本试验表明,在日粮中添加枯草芽孢杆菌和富硒酵母可以提高瑶鸡生长性能和屠宰性能,增加肉中硒含量,并改善肌肉品质,其中添加200 mg/kg枯草芽孢杆菌和200 mg/kg、400 mg/kg富硒酵母效果较好。 相似文献
4.
微生态制剂对断奶仔猪增重和预防腹泻的效果 总被引：11，自引：0，他引：11
试验选择108头35日龄断奶三元杂交仔猪，分成3个处理组。处理1组基础日粮添加土霉素200mg/kg，处理2组基础日粮添加痢特灵300mg/kg；处理3组基础日粮添加育崽宝微生态制剂1000mg/kg，进行40d对比试验，结果日增重处理3组较处理1组和处理2组分别提高13.52%和14.49%；腹泻率分别降低60.66%,53.85%。 相似文献
5.
通过测定红细胞C3b受体(C3bR)花环率和免疫复合物(IC)花环率,研究了不同添加剂量的硫酸粘杆菌素对雏鸡红细胞免疫功能的影响。试验分为5组,分别为I组(基础日粮对照组)、II组(基础日粮+20mg/kg硫酸粘杆菌素试验组)、III组(基础日粮+40mg/kg硫酸粘杆菌素试验组)、IV组(基础日粮+60mg/kg硫酸粘杆菌素试验组)和V组(基础日粮+80mg/kg硫酸粘杆菌素试验组),结果表明,随日龄和剂量增加,雏鸡红细胞C3b受体花环率和免疫复合物花环率下降,说明不同剂量硫酸粘杆菌素均可不同程度导致雏鸡免疫功能受损,其中80mg/kg添加组最为明显。 相似文献
6.
γ-氨基丁酸对蛋鸽产蛋性能和血清生化指标的影响 总被引：2，自引：0，他引：2
为探讨日粮中添加γ-氨基丁酸(γ-aminobutyric acid,GABA)对蛋鸽产蛋性能的影响,试验选用12月龄的蛋鸽96对,随机分为4个处理组,每个处理3个重复,每重复8对。试验采用单因子设计,在基础日粮中添加0(对照组)、20(试验I组)、40(试验II组)、80mg/kg GABA(试验III组),试验期40d。结果表明:①日粮中添加GABA对蛋鸽产蛋性能无显著影响;与对照组相比,20mg/kg GABA组总蛋重提高了4.61%(P0.05);20、40、80mg/kg GABA组产蛋间隔较对照组分别缩短了6.76%(P0.05)、10.08%(P0.05)和9.55%(P0.05)。②80mg/kgGABA组白蛋白较对照组显著提高22.82%(P0.05),甘油三酯水平较对照组降低了20.00%(P0.05);与对照组相比,20mg/kg GABA组血清尿素氮水平降低了16.44%(P0.05);日粮中添加GABA对血清总蛋白、钙、天门冬氨酸转氨酶和丙氨酸转氨酶水平无显著的影响(P0.05)。③日粮中添加GABA对血清抗氧化指标无显著影响(P0.05)。综上所述,饲料中添加GABA初步改善了蛋鸽的产蛋性能。 相似文献
7.
《广东畜牧兽医科技》2015,(5)
本试验主要探讨胍基乙酸对育肥猪生长性能的影响。选用128头体重为45 kg左右的二元杂交育肥猪为研究对象,按照体重、胎次、性别、日龄完全一致的原则随机分为3个处理组,每组7个重复,每个重复8头猪。分别饲喂基础日粮(对照组)、基础日粮上添加0.1%胍基乙酸(试验I组)、基础日粮添加0.2%胍基乙酸(试验II组)。结果表明:与对照组相比,试验I组和试验II组平均日增重分别提高90.75 g/头和53.10g/头,日采食量分别提高83.58 g/头和109.44 g/头,料肉比降低0.32和0.11;试验I组和试验II组有效提高育肥猪综合体型得分、体长、体高腿臀围、腹围和胸围。由此可见,在日粮中添加0.1%和0.2%胍基乙酸能有效提高育肥猪日采食量和日增重,降低料肉比,改善体型,增加经济效益。 相似文献
8.
《饲料研究》2014,(21)
试验旨在探讨甘露聚糖酶、α-半乳糖苷酶和木聚糖酶复合使用及进一步与地衣芽孢杆菌组合配伍的应用效果。选用162头健康的(杜×长×大)生长猪,按照遗传背景相同、体质量相近及性别比例一致的原则随机分为3个处理,每处理设9个重复,每重复6头生长猪,试验期30 d。处理I组饲喂基础日粮,处理II组在基础日粮中添加甘露聚糖酶50、α-半乳糖苷酶50和木聚糖酶100 mg/kg,处理III组在处理II组日粮中添加地衣芽孢杆菌200 mg/kg。试验结果表明,与处理I组比,处理II组平均日增质量提高6.42%,处理III组提高12.55%;处理III组较处理II组提高5.77%;但差异均不显著(P0.05),3个处理组间平均日采食量基本没有差异。就料重比而言,与处理I组比较,处理II组降低6.78%,处理III组降低9.98%;处理III组较处理II组降低3.43%;但差异均不显著(P0.05)。 相似文献
9.
外源性脂肪乳化剂饲喂肉仔鸡的试验 总被引：6，自引：0，他引：6
选取360只21日龄的AA肉仔鸡,随机分为3组,每组设4个重复,每重复30只。对照组饲喂基础日粮,试验1组在基础饲粮中添加250mg/kg脂肪乳化剂,试验2组添加500mg/kg脂肪乳化剂。试验分2阶段进行,22～35日龄饲喂I期日粮,35～49日龄饲喂II期日粮,每期结束时进行生长性能统计,并于每期试验结束前2d收集鸡群粪便进行消化率测试。试验结果表明,外源性脂肪乳化剂能有效提高肉仔鸡生产性能和脂肪消化率,平均日增质量提高7.5%(P<0.05),料重比下降6.1%(P<0.05),脂肪利用率提高6.8%(P<0.05)。 相似文献
10.
480羽1日龄雄性樱桃谷肉鸭随机分成3个处理组,每个处理组4个重复。处理I组为试验组,在肉鸭基础饲粮中添加微生物制剂多能宝500 mg/kg;处理II组为抗生素对照组,在饲粮中添加杆菌肽锌30 mg/kg和硫酸粘杆菌素6 mg/kg;处理Ⅲ组为空白对照组,采用基础饲粮。试验分别于21日龄和42日龄进行称重、免疫器官指数测定和采血制备血清,并在18日龄、19日龄、20日龄、39日龄、40日龄和41日龄收集粪样,研究微生物制剂多能宝对樱桃谷肉鸭生长性能、免疫器官指数、血清生化指标及粪便中氮含量的影响,结果表明：①1~21日龄,I组采食量、成活率略高于Ⅲ组（P>0.05）;22~42日龄,I组采食量极显著低于II组（P<0.01）,料重比较Ⅲ组有所降低（P>0.05）。②21日龄,I组胸腺指数和脾脏指数均低于II组（P<0.01）;42日龄,I组脾脏指数显著高于II组（P<0.05）。③21日龄,I组血清中尿素氮显著低于Ⅲ组（P<0.05）;42日龄,I、II组血清中尿酸极显著低于Ⅲ组（P<0.01）。④21日龄,I组粪便中氮含量极显著低于II、Ⅲ组（P<0.01）。 相似文献
11.
日粮不同β-胡萝卜素水平对奶牛产奶性能的影响 总被引：1，自引：0，他引：1
本试验通过在奶牛日粮中补充β-胡萝卜素制剂,探讨不同添加量对舍饲奶牛的产奶量和乳品质的影响。试验牛选用年龄、体重、营养状况相近,胎次为头胎、泌乳200 d左右的健康荷斯坦奶牛32头,采用完全随机区组设计,分为4个处理组,Ⅰ组为对照组（基础日粮）,Ⅱ组（基础日粮＋300 mg/dβ-胡萝卜素）、Ⅲ组（基础日粮＋600 mg/dβ-胡萝卜素）、Ⅳ组（基础日粮＋900mg/dβ-胡萝卜素）为试验组,基础日粮由青贮玉米、苜蓿草粉、小麦秸和精料组成。研究结果显示,奶牛在添加β-胡萝卜素后能够提高产奶量,Ⅳ组的产奶量比对照组Ⅰ提高了11.03%（P〈0.05）,Ⅲ、Ⅳ组的乳脂率分别比对照组增加了6.34%和9.36%（P〈0.01）,Ⅳ组的乳蛋白率比对照组增加了2.05%（P〈0.05）,乳糖含量各处理组差异均不显著（P〉0.05）。 相似文献
12.
The aim of the experiment was to study the effect of pelleted and meal-form of a diet supplemented with lysine on passage rate through the digestive tract (DT) and utilization by young pigs. The experiment was carried out on 20 young boars of about 10 kg live weight, divided into 3 groups. The experimental diet composed of feeds of plant origin (barley 80.0%, sesame meal 10.6%, soybean meal 7.0%; total crude protein 15.3%) and supplemented with L-lysine to total level of 0.8% was fed twice daily as: a) a meal mixed with water (group I), b) dry meal (group II), c) pellets (group III). The experiment lasted 51 days including the last 6 days for nitrogen balance. On the first day of the collection period 3% Cr2O3 was included in the first meal to estimate the passage rate of feed. The average body weight at the end of the experiment was similar in group I and II (29.7 and 28.5 kg) but significantly lower as compared to group III (31.7 kg). Differences between the groups in the growth rate were higher during the first than the last period of the experiment. Pelleting reduced feed consumption per kg gain by about 12%. It was calculated that the increase in the live weight in group III could be attributed to the deposit of both protein and fat in the body. Large individual differences were observed in the rate of passage through DT and this probably effected the lack of significant differences between the groups. 相似文献
13.
Mohammad Ali Behroozlak Mohsen Daneshyar Parviz Farhoomand Abbas Nikoo 《Animal Science Journal》2021,92(1):e13645
A total of 250 one-day-old Ross 308 male chicks were used to investigate the effects of Fe-methionine (Fe-met) and iron sulfate (FeSO4.7H2O) on performance, mineral concentration, meat quality, and oxidative stability of breast. The feeding experiment was performed with five dietary groups including group I (basal diet [BD] + 80 mg/kg FeSO4), group II (BD + 60 mg/kg FeSO4 + 20 mg/kg Fe-met), group III (BD + 40 mg/kg FeSO4 + 40 mg/kg Fe-met), group IV (BD + 20 mg/kg FeSO4 + 60 mg/kg Fe-met), and group V (BD + 80 mg/kg Fe-met). The results showed that Fe and Cu content in the breast muscle increased by dietary supplementation of organic and inorganic iron from II to V groups. Dietary groups of II, IV, and V increased L* value and b* value of breast meat. Additionally, redness of breast meat enhanced linearly and quadratically by dietary supplementation of 80 mg/kg Fe as FeSO4. In addition, dietary supplementation Fe from II to V groups led to a significant increase in pHu at 24-h postmortem while it was negatively correlated with L* value of breast muscle. This study demonstrates that replacing FeSO4 with Fe-Met could improve breast meat yield of broilers. Although 80 mg of Fe-Met improved the iron content of meat, it showed detrimental effects on the lipid oxidation of breast meat. 相似文献
14.
试验研究了日粮添加复合异位酸对山羊小肠氨基酸流通量和表观消化率的影响。采用3×3拉丁方试验设计,选用3头安装有永久性瘤胃瘘管、十二指肠近端瘘管和回肠远端瘘管、平均体重为(25.4±0.75)kg的健康麻城黑山羊为试验动物。I组为空白对照,饲喂基础日粮。II组、III组分别饲喂含0.3%和0.6%复合异位酸(钠盐形式)的试验日粮。采用Co-EDTA标记法测定小肠氨基酸流通量和表观消化率。结果显示:III组缬氨酸和异亮氨酸十二指肠流通量极显著高于对照组(P0.01),亮氨酸和必需氨基酸显著高于对照组(P0.05);缬氨酸和丙氨酸的小肠表观消化率显著高于对照组(P0.05)。II组缬氨酸和异亮氨酸十二指肠流通量显著高于对照组(P0.05)。III组异亮氨酸十二指肠流通量显著高于II组(P0.05)。 相似文献
15.
Three groups of six pigs each (live weight at the beginning of the experiment 20 kg) were given a cereal ration with 8% rape seed meal. Group I did not receive a J supplement and was fed ad libitum. The rations of groups II and III were supplemented with 1 mg J/kg feed. The feed intake of group II was limited to the amount consumed by group I (pair fed); group III received the feed ad libitum. The daily weight gains of the 3 groups were 327, 377 and 613 g, feed expenditure 3.79, 3.68 and 3.47 kg/kg gain. In an N balance experiment carried out with 3 animals each from groups I and II, 41.4% of the N taken in group I and 43.8% in group II were retained (p greater than 0.05). Liver, intestinal fat and leaf were heavier in group I (p less than 0.01), the protein content of the empty body, the bones and bristles significantly lower than in group II. Protein retention in group II was 14% higher than in group I. In case of iodine deficiency protein retention is lower, energy retention, however, is largely unchanged. 相似文献
16.
Savaram Venkata Rama Rao Bhukya Prakash Kanya Kumari Mantena Venkata Laxmi Narasimha Raju Arun Kumar Panda 《Tropical animal health and production》2013,45(6):1447-1451
An experiment was conducted to determine the performance, antioxidation activity, and bone mineral content in Vanaraja chickens fed diet supplemented with organic trace minerals (oTM) at reduced levels. A total of 360 day-old chicks were selected and distributed randomly into 60 battery brooder pens. A maize–soybean meal-based control diet was supplemented with inorganic trace minerals (iTM), i.e., Mn, Zn, Fe, and Cu at 50, 45, 40, and 7.5 mg/kg, respectively, and varying concentration of oTM, i.e., Zn, Mn, Cu, Fe, I, Se, and Cr at 45, 50, 7.5, 40, 2, 0.30, and 0.25 mg/kg (diet II); 33.75, 37.50, 5.63, 30.0, 1.50, 0.23, and 0.19 mg/kg (diet III); 22.5, 25.0, 3.75, 20.0, 1.0, 0.15, and 0.13 mg/kg (diet IV); 18.0, 20.0, 3.0, 16.0, 0.80, 0.12, and 0.10 mg/kg (diet V); and 13.5, 15.0, 2.25, 12.0, 0.60, 0.09, and 0.08 mg/kg (diet VI), respectively. Each diet was allotted randomly to ten replicates and fed ad libitum from 1 to 42 days of age. The body weight at 14, 28, and 42 days was not affected by reducing the supplementation of oTM concentration in the diets. Similarly, feed intake at 14 days of age was not affected but reduced significantly (P?<?0.05) in the group fed diet IV (50 % oTM) compared to that in the other groups. The higher feed conversion ratio and increased concentration of Ca, P, and trace minerals in tibia were evident in the group fed oTM-supplemented diets compared to the diet containing iTM. Activities of glutathione peroxidase and ferric reducing ability in plasma did not differ in the groups fed on lower concentration of oTM compared to those fed on diet I (control diet). Therefore, it is concluded that the dietary supplementation of trace minerals can be reduced greatly when supplemented as organic form without affecting growth and antioxidant status in Vanaraja chickens. 相似文献
17.
E T Lyons J H Drudge D E LaBore S C Tolliver 《American journal of veterinary research》1975,36(6):777-780
A controlled test of the activity of 3 formulations of levamisole, at the dose level of approximately 8 mg/kg, against naturally occurring infections of gastrointestinal parasites and lungworms was made in 24 calves allotted to 4 groups of 6 calves each. Levamisole was administered to group I calves in the drinking water, to group II calves by subcutaneous injection, and to Group III calves by feeding alfalfa pellets mixed in corn silage; group IV calves were nontreated controls. Group I calves consumed the medicated water between 4 hours and 20 minutes and 9 hours and 40 minutes; group III calves consumed the medicated feed within 2 hours and 15 minutes. For calves of group I, II, and III, removals of 4th-stage Ostertagia sp were 64, 23, and 0%; of mature Ostertagia ostertagi, 90, 93, and 83%; and of mature Trichostrongylus axei, 92, 99, and 92%, respectively. For all 3 treated groups of calves, removal was 100% for 4th-stage Cooperia sp and for mature Trichostrongylus colubriformis, Cooperia oncophora, Cooperia punctata, and Oesophagostomum radiatum. Removals of Dictyocaulus vivipara were 90, 90, and 94% for calves of groups I, II, and III, respectively. There was no evidence of toxicosis. At necropsy, 2 calves in group II had small areas of edema at the sites of injection of levamisole. 相似文献
18.
Escherichia coli-derived 6-phytase expressed in Pichia pastoris (Optiphos) was added to broiler rations with considerably reduced levels of phosphorus (by 1.5 g/kg). This experiment, performed over a five-week period, involved Ross 308 male chickens kept in battery cages. Each group was divided into 9 subgroups, each of 9 chickens (81 birds per treatment). Birds were allocated to a positive control group (I), a negative control group (II) and three phytase-supplemented groups (III-V--the diet as in group II + 250, 500 and 750 FTU Escherichia coli phytase/kg feed, respectively). The major components of starter and grower diets were corn, soybean and wheat meals. Starter and grower diets (in meal form) contained 6.73 and 6.05 g total P/kg, 4.05 and 3.46 g available P (aP)/kg, respectively, in group I, and 5.23 and 4.55 total P/kg, 2.54 g and 1.95 g aP /kg, respectively, in groups II-V. Phytase efficacy was evaluated based on performance results, carcass quality and bone mineralization. P reduction in group II decreased weight gains by 9.1% and increased feed conversion by approximately 8.4%, compared with group I. Diet supplementation with phytase in groups IV and V significantly compensated for the decrease in performance observed in group II. The differences in dressing percentage between group II and groups III and V were significant. Phosphorus reduction in the diets negatively influenced the process of bone mineralization, which was enhanced by phytase supplementation. 相似文献
19.
An experiment was made with the Rumen Simulation Technique (Rusitec) in which the fermentation of a mixed ration of hay (12.8 g/d) and bruised barley (3.2 g/d) was compared with the fermentation of the same diet in the presence of 5 mg monensin/d from the USA, CSFR and Bulgaria. The fermentation of the mixed ration was significantly affected by all three kinds of monensin. The digestibility of dry matter (DM) in the rations declined in the presence of monensin from 48% to 40% (tab. I). The digestibility of detergent fibre, cellulose and hemicellulose also declined in the presence of monensin (tab. I). The production of methane decreased (-70%) and CO2 production dropped too, but this decrease could be accounted for by the changes in the production of volatile fatty acids and redistribution of metabolic hydrogen (tab. I). Monensin decreased the production of total volatile fatty acids (-21%), the production of acetic (-35%), n-butyric, n-valeric and isovaleric acids (tab. II) and increased the production of propionic acid (+60%). The production, utilization and recovery of metabolic hydrogen were significantly increased in the presence of all three kinds of monensin (tab. IV). The end products of fermentation were affected by an addition of monensin to the mixed ration. All three kinds of monensin increased energic efficiency of volatile fatty acids, decreased adenosinetriphosphate (ATP) production, the amounts of fermented hexose, organic matter fermented and utilization of glucose (tab. III).(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
20.
文章旨在评估日粮添加牛至草粉对1～42?d肉鸭生长性能、抗氧化和肉品质的影响。试验选择1日龄、平均体重为（48.63±0.06）g的商品肉鸭560只,随机分为4组,每组5个重复,每个重复26只。对照组肉鸭饲喂基础日粮,处理1组肉鸭饲喂基础日粮+50?mg/kg抗菌肽,处理2组和处理3组分别饲喂基础日粮+20和40?mg/kg牛至草粉。结果：与对照组相比,20?mg/kg牛至草粉组42?d肉鸭的体重显著提高7.23%（P＜0.05）,同时该组1～42?d肉鸭的饲料报酬显著提高14.81%（P＜0.05）。与对照组相比,20和40?mg/kg牛至草粉组肉鸭肌肉谷胱甘肽过氧化物酶活性分别显著提高23.08%和23.93%（P＜0.05）。抗菌肽组和20?mg/kg牛至草粉组肌肉丙二醛含量较对照组分别显著降低47.49%和52.36%（P＜0.05）。对照组血清丙二醛含量最高,20?mg/kg牛至草粉组丙二醛含量最低,对照组血清丙二醛含量较处理组分别显著提高87.53%、156.96%和78.07%（P＜0.05）。与对照组相比,处理组肌肉蒸煮损失分别显著降低35.86%、41.73%和39.95%（P＜0.05）,20和40?mg/kg牛至草粉组肌肉硫代巴比妥酸值分别显著降低11.76%和14.71%（P＜0.05）。结论：在本试验条件下,日粮添加牛至草粉对肉鸭的影响可以达到与抗菌肽一致的效果,其中粮添加20?mg/kg牛至草粉可以显著改善1～42?d肉鸭的饲料报酬,提高肌肉和血清的抗氧化性能,降低肌肉蒸煮损失。
[关键词]牛至草|肉鸭|生长性能|抗氧化|肉品质 相似文献