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1.
Aregheore EM 《Tropical animal health and production》2001,33(4):331-340
Twelve Gwembe goats (9 females and 3 males; 12–18-months old; average body weight 18.50±0.05 kg) were divided into three groups and fed complete rations based on crop residues. Three residues of oilseeds – bambara groundnut shell (BGS), groundnut shell (GNS) and sunflower head (SFH) – were used. The rations were isonitrogenous and isocaloric. The average daily dry matter intake was BGS 0.85±0.02, GNS 0.88±0.02 and SFH 0.89±0.03 kg/head per day, which did not differ from each other significantly (p>0.05). However, the daily live weight gains were significantly different (p<0.05). Goats that consumed SFH gained more (84 g; p<0.05) in live weight than those fed BGS (76 g) or GNS (72 g). Feed conversion followed the pattern of live weight gain. The plasma non-protein N values were 25.1±0.36, 24.6±0.38 and 24.9±0.35 mg/100 ml, while the plasma glucose concentrations were 67.2±1.44, 65.1±1.32 and 67.8±1.49 mg/100 ml, respectively, for goats on BGS, GNS and SFH rations, with no significant difference (p>0.05) between the three rations. The cost/kilogram for each of the rations were all within the same range, but the cost/kilogram of live weight gain was lower for the SFH ration than for the GNS and BGS rations. The nutrient digestibilities of the crop residues were similar among the treatments. Overall, SFH tended to perform better than GNS or BGS in these complete rations for goats in the hot dry season. 相似文献
2.
文章旨在评估用平菇和水稻秸秆混合培养的饲料原料替代常规牧草资源苜蓿草对乳山羊泌乳性能、养分消化、瘤胃发酵及乳成分的影响。试验选择产后5?d,平均体重为（24.21±0.23）kg的泌乳山羊36头,随机分为3组,每组4个重复,每个重复3头。对照组饲喂60%浓缩料+40%苜蓿草,T1和T2组用40%和80%平菇发酵水稻秸秆替代苜蓿草,试验为期4周。结果：对照组乳山羊牧草采食量较T2组显著提高了10.74%（P＜0.05）,T1组干物质和中性洗涤纤维表观消化率分别较对照组显著提高了7.49%和7.23%（P＜0.05）,而对照组有机物、粗蛋白质表观消化率分别较T2组显著提高了14.71%和13.44%（P＜0.05）。对照组血清球蛋白、肌酸酐、葡萄糖和胆固醇浓度最高（P＜0.05）,而T1组血清白蛋白浓度最高（P＜0.05）。处理组瘤胃pH较对照组显著提高了2.94%和3.10%（P＜0.05）。对照组瘤胃挥发性脂肪酸、氨氮、总氮和非蛋白氮浓度均显著高于处理组（P＜0.05）。T2组乳中脂肪含量较对照组显著提高了13.62%（P＜0.05）,对照组与T1组乳山羊的饲料效率（能量校正乳/采食量）较T2组显著提高了32.29%和36.46%（P＜0.05）。结论：乳山羊日粮中用40%平菇发酵水稻秸秆可以提高干物质和中性洗涤纤维表观消化率,改善瘤胃微生物蛋蛋白的合成。
[关键词]平菇|水稻秸秆|乳山羊 相似文献
3.
本研究旨在探讨马铃薯藤饲喂水平对山羊生长性能、养分消化率和胴体特征的影响。试验将平均初始体重为（14.42±0.24）kg的40头山羊随机分为4组,每组5个重复,每个重复2头。T1组仅饲喂干草,T2组饲喂干草+100%马铃薯藤,T3组饲喂干草+50%马铃薯藤+50%浓缩料,T4组饲喂100%浓缩料。在为期10周的饲养试验后屠宰,分析胴体特征。结果：T2～T4组山羊的末重、增重、日增重和饲料效率显著高于T1组（P＜0.05）,其中T1组山羊的日增重和增重均表现出负增长。T2～T4组山羊的干物质、有机物、粗蛋白质和代谢能摄入量均显著高于T1组（P＜0.05）,但T2和T3组山羊中性洗涤纤维摄入量显著高于T1和T4组（P＜0.05）。T2、T3和T4组山羊干物质和有机物表观消化率显著高于T1组（P＜0.05）,T4组山羊粗蛋白表观消化率显著高于T1和T2组（P＜0.05）。T2、T3和T4组山羊屠体重、热胴体重、眼肌面积、可食用内脏和不可食用内脏重量均显著高于T1组（P＜0.05）。T3组山羊的屠宰率显著高于其他组（P＜0.05）。结论：在干草为基础的日粮中添加马铃薯藤可以提高山羊采食量、饲料转换率、养分消化率、屠宰率和胴体特征。
[关键词]马铃薯藤|山羊|生长性能|消化率|胴体特征 相似文献
4.
本试验旨在研究苜蓿草粉对波尔山羊生长性能的影响及经济效益分析。选取体重在24~28kg的波尔山羊母羊75只,采用完全随机化区组设计分为5组,每组3个重复,每个重复5只羊。对照组饲喂基础饲粮,试验Ⅰ组、试验Ⅱ组、试验Ⅲ组和试验Ⅳ组在基础饲粮的基础上分别用10%、20%、30%、40%的苜蓿草粉等量替代花生秧。预试期为7d,正试期为60d。结果发现,5组平均日采食量无显著性差异(P0.05),但随着苜蓿草粉替代量的增加,平均日采食量有逐渐降低的趋势;试验Ⅲ组和试验Ⅳ组平均日增重显著高于其他3组,随着苜蓿草粉替代量的增加,平均日增重则表现出升高的趋势;4个试验组的料重比均低于对照组,其中试验Ⅲ组和试验Ⅳ组显著低于对照组(P0.05),试验Ⅳ组最低,为6.53。结果提示,波尔山羊饲粮中用苜蓿草粉替代花生秧可以提高平均日增重、降低料重比,苜蓿草粉替代量为40%时波尔山羊生长性能表现较好,但饲料成本增加。 相似文献
5.
Ali Ansha Tegegne Firew Asmare Bimrew Mekuriaw Zeleke 《Tropical animal health and production》2019,51(2):457-463
The study was conducted to evaluate the effect of feeding different levels of sun-dried Ziziphus spina-christi (ZC) leaves on feed intake and live weight gain of local male goats. Twenty-five male local breed of goats at 1 year of age (body weight; BW?=?20.7?±?0.72 kg) were randomly allocated to five treatments and five replications. Treatments were as follows: T1 (grass hay only; control group); T2 (75% grass hay + 25% ZC leaves); T3 (50% grass hay + 50% ZC leaves); T4 (25% grass hay + 75% ZC leaves), and T5 (100% ZC leaves). The study lasted for 90 days. During this period, feed intake, BW change, and average daily gain were evaluated. There was a significant difference in total dry matter intake of goats fed on different levels of ZC leaves compared with the control group. Mixing of the pasture grass hay diet improved (P?<?0.05) goats feed intake from 440 to 592 g/head/day at the minimum proportion of 25% ZC and natural pasture mixture. However, there was no significant difference (P?>?0.05) in feed intake among the supplemented groups (T2–T5) as ZC leaves proportion increased. Goats in the control group and in the 25% ZC treatment diet gained 31.4 and 46.7 g, which was not different (P?>?0.05). The highest average daily BW was gained (P?<?0.05) in goats supplemented with the highest level (100%) of ZC leaves. T5 (100% ZC leaves supplementation) showed a significant increment (P?<?0.05) in body weight gain of goats over other treatments and the control. Feed conversion ratio was increased (P?<?0.05) with increased inclusion level of ZC leaves. Goats on supplemented treatments 1 and 2; treatments 4 and 5 had no significant difference (P?>?0.05) in feed conversion efficiency while there was a significant (P?<?0.05) difference between treatments 2 and 3 diets which had higher (P?<?0.05) feed conversion ratio than the control groups. Generally, the results of the current study showed that supplementation of goats with above 50% level of dried ZC leaves in their diet significantly increased feed intake and body weight gain by improving feed conversion efficiency of goats.
相似文献6.
The aim of this study was to investigate the effect of silage sugarcane leaf replacing different ratio of King grass on growth performance,nutrient apparent digestibility and serum biochemical indices of Hainan Black goats.A total of 20 3-month-old Hainan Black goats with an average weight of (6.96±0.49) kg were selected (half male and hale female) and randomly divided into 5 groups with 4 replicates per group and 1 goat per replicate.The goats in the control group were fed the basal diet including concentrate and roughage,roughage was King grass.The goats in the groups 1 to 4 were fed with the equal concentrate,roughage (fresh King grass) was replaced with 25%,50%,75% and 100% silage sugarcane leaf,respectively.The pre-test period lasted for 5 days and the trial period lasted for 30 days.The results showed that compared with control group,the average feed intake of crude feed and average feed intake of total dry matter in group 3 were significantly increased (P< 0.05),there were no significant differences in the average daily gains,average feed intake of concentrate and F/G among all groups (P> 0.05).Compared with control group,the apparent digestibility of Ash and P in group 3 were significantly increased (P< 0.05),the apparent digestibility of Ash,NDF,ADF and Ca in group 4 were significantly increased (P< 0.05).No significant difference was showed between groups 3 and 4 (P> 0.05).There were no significant differences in serum biochemical indices among all groups (P> 0.05).In conclusion,silage sugarcane leaf replaced certain percentage of King grass in roughage could improve the growth performance and nutrient apparent digestibility to some extent,and had no bad effect on the serum biochemical indices of goats,the optimal proportion of silage sugarcane leaf in roughage was 75%. 相似文献
7.
文章旨在研究在山羊日粮中添加中草药对其生长性能和胴体特征的影响。试验将平均体重为(19.22±0.08)kg的45头山羊随机分为3组,每组3个重复,每个重复5头羊。对照组饲喂基础日粮,两个处理组分别用10%的穿心莲茎叶和全珠穿心莲替代苜蓿草,试验共进行14周。结果:饲喂全珠穿心莲的山羊末重、屠体重、采食量和日增重分别较对照组显著提高21.78%、25.67%、20.78%和66.77%(P<0.05),料重比显著降低27.58%(P<0.05)。喂全珠穿心莲的山羊热胴体重、冷胴体重、眼肌面积较对照组分别显著提高48.75%、49.64%和95.43%(P<0.05)。饲喂穿心莲茎叶的山羊冷冻损失最低,较对照组显著降低了14.28%(P<0.05)。与对照组相比,处理组胃肠道相对重量分别显著提高34.09%和44.71%(P<0.05),而皮下脂肪和脏器系膜脂肪相对重量分别显著降低12.01%、13.80%和57.58%、82.00%(P<0.05)。结论:在山羊饲料中加入穿心莲可显著提高山羊生长性能和肉制品产量。因此,穿心莲可作为反刍动物的天然添加剂,可以提高其生长性能、胴体特性和肉制品产量。 相似文献
8.
CUI Jia-jun ZHANG He-liang ZHANG Wei-jin ZHANG Di LI Xiu-hua XIN Xiao-fu 《中国畜牧兽医》2017,44(8):2342-2347
This experiment was aimed to study the effects of protein hydrolysate on growth performance,blood biochemical indexes and nutrient apparent digestibility in growing-finishing pigs,and determine the optimum dosage of additions.300 Doroc pig×Landrace pig×Yorkshire pig crossbreeding commercial pigs were chosen and divided into five groups with four repeats per groups and 15 pigs per repeat.The pigs in group Ⅰ (control group) were fed with basal diet,others in groups Ⅱ to Ⅴ were fed basal diet with 1%,2%,3% and 4% T30 small peptide,respectively.The test lasted for 30 d. The results showed that:①The average daily gain (ADG) of group Ⅲ was significantly higher than groups Ⅰ and Ⅴ (P<0.05), the average daily feed intake (ADFI) of group Ⅲ was significantly higher than group Ⅱ, and had no significant difference with other groups (P>0.05). ②The total protein and globulin levels of group Ⅴ were the highest that significantly higher than group Ⅱ (P<0.05),and had no significant difference with other groups (P>0.05).The urea nitrogen of group Ⅱ was significantly lower than other groups (P<0.05).③The dry matter and crude protein apparent digestibility of group Ⅴ were the highest,and the Ca and P apparent digestibility were declined in T30 supplement groups. In conclusion,the optimum adding amount of protein hydrolysate of growing pig was 1.796%.It could improve the growth performance,decrease F/G,and increase the levels of total protein and globulin. 相似文献
9.
本试验旨在研究日粮中青贮甘蔗尾叶替代不同比例王草对海南黑山羊生长性能、养分表观消化率及血清生化指标的影响.选用20只平均体重(6.96±0.49)kg的3月龄海南黑山羊羔羊(公、母各半),随机分为5组,每组4个重复,每个重复1只羔羊.对照组饲喂基础日粮,基础日粮包括精饲料和粗饲料,粗饲料为王草;试验1~4组分别在粗饲料中以青贮甘蔗尾叶替代25%、50%、75%、100%王草.预试期5 d,正试期30 d.结果表明,与对照组相比,试验3组粗饲料干物质采食量和平均干物质日采食量显著升高(P< 0.05),各组间平均日增重、精饲料干物质采食量和料重比均无显著差异(P> 0.05);与对照组相比,试验3组粗灰分、磷表观消化率显著升高(P< 0.05),试验4组粗灰分、中性洗涤纤维、酸性洗涤纤维、钙表观消化率显著升高(P< 0.05),试验3、4组间差异不显著(P> 0.05);各组间黑山羊血清生化指标均无显著差异(P> 0.05).综上所述,粗饲料中青贮甘蔗尾叶替代一定比例王草可在一定程度上改善黑山羊生长性能,提高养分表观消化率,且对其血清生化指标无不利影响,其中粗饲料中用青贮甘蔗尾叶替代75%王草时饲喂效果最佳. 相似文献
10.
Effect of supplementing urea-treated barley straw with lucerne or vetch hays on feed intake,digestibility and growth of Arsi Bale Sheep 总被引：1，自引：1，他引：0
The study was conducted at Sinana Agricultural Research Center, Ethiopia to assess the supplementation of graded levels of
vetch (Vicia dasycarpa `lana’) and lucerne (Medicago sativa,’ Hunter river’) hay on feed intake, digestibility and body weight (BW) change of Arsi-Bale sheep fed urea treated barley
straw (UTBS). A 7 day- digestibility and a 90 day- feed intake trials were conducted using 28 and 35 sheep, respectively.
The experimental design was a randomized complete block design with seven dietary treatments that consisted of feeding UTBS
(T1) as the control treatment, UTBS plus 150, 250 and 350 g dry matter (DM) per day of vetch for T2, T3, T4, respectively
and UTBS plus 150, 250 and 350 g DM per day of lucerne for T5, T6 and T7, respectively. Intake of UTBS was not affected (P > 0.05)
by inclusion of lucerne hay at 25–35% of daily DM intake. The supplements increased daily intake of total DM, organic matter
(OM), neutral detergent fiber (NDF), acid detergent fiber (ADF) and metabolizable energy (ME) (P < 0.001) as well as apparent
digestibility of DM, OM (P < 0.001), NDF (P < 0.01), ADF, crude protein (CP) (P < 0.05) and daily BW gain (P < 0.001). Supplementation
with lucerne than vetch hay promoted higher (P < 0.001) CP and ME intakes and daily BW gain. Feeding with the UTBS without
supplementation was enough to meet the maintenance requirements of the sheep and allow small BW gain. The results of the study
showed that urea treatment of barley straw in conjunction with supplementation of lucerne or vetch hay could serve as a useful
strategy in improving smallholder sheep production in the tropics. 相似文献
11.
本试验在生长育肥猪日粮中添加酶解蛋白肽T30,研究小肽对生长育肥猪的生长性能、血液生化指标及养分表观消化率的影响,并探讨其在生长育肥猪阶段的最适添加量。采用单因子随机试验设计。选取杜洛克猪×长白猪×大白猪三元商品猪300头,随机分为5组,每组4个重复,每个重复15头。Ⅰ组（对照组）饲喂基础日粮,Ⅱ~Ⅴ组在基础日粮中分别添加1%、2%、3%、4% T30。试验期30 d。结果显示：①Ⅲ组的平均日增重显著高于Ⅰ、Ⅴ组（P<0.05）;Ⅲ组平均日采食量显著高于Ⅱ组（P<0.05）,与其他组间差异均不显著（P>0.05）。②Ⅴ组总蛋白、球蛋白水平最高,显著高于Ⅱ组（P<0.05）,但与其他各组间差异均不显著（P>0.05）;Ⅱ组尿素氮水平显著低于其他各组（P<0.05）。③Ⅴ组干物质、粗蛋白质表观消化率最高,T30添加组钙、磷表观消化率均出现不同程度的下降。综上所述,在生长育肥猪阶段酶解蛋白肽的最佳添加量为1.796%,添加酶解蛋白肽可提高生长性能、降低料重比,提高血液总蛋白水平、球蛋白水平。 相似文献
12.
13.
牛至精油对家畜生产性能和免疫力的提高有重要的影响。通过在日粮中添加牛至精油育肥河西绒山羊,研究其对河西绒山羊生长性能、屠宰性能及胴体品质的影响。对照组饲喂基础日粮,试验组在饲喂的基础日粮中分别添加4和7 g宜生饲宝(含牛至精油的添加剂),4和7 g宜生饲宝中牛至精油的含量分别为52和91 mg。对照组和试验组均为同月龄、同体重的河西绒山羊羯羊,试验组和对照组均设3个重复,每个重复5只羊。育肥期为90 d,每30 d为1个阶段。试验结果表明:育肥全期,对照组、4 g组和7 g组河西绒山羊平均日增重分别为96.30、172.22和169.82 g·d-1,4 g组和7 g组分别显著高于对照组(P<0.05),4 g组和7 g组无显著差异(P>0.05);屠宰性状,胴体重对照组、4 g组和7 g组分别为20.24、24.18和23.90 kg,无显著差异(P>0.05),屠宰率对照组、4 g组和7 g组分别为48.86%、51.21%和51.56%,4 g组和7 g组分别显著高于对照组(P<0.05),4 g组和7 g组无显著差异(P>0.05),胴体净肉重对照组、4 g组和7 g组分别为12.90、16.27和15.99 kg,4 g组和7 g组分别显著高于对照组(P<0.05),4 g组和7 g组无显著差异(P>0.05);肉质性状,大理石纹4 g组和7 g组分别显著高于对照组(P<0.05),4 g组和7 g组无显著差异(P>0.05),pH、熟肉率、失水率、嫩度、蒸煮损失对照组、4 g组、7 g组间均无显著差异(P>0.05)。日粮中添加牛至油可以显著提高河西绒山羊的育肥性能,本试验日粮中添加4 g宜生饲宝(含牛至精油52 mg)效果最佳。 相似文献
14.
C. B. Katongole F. B. Bareeba E. N. Sabiiti I. Ledin 《Tropical animal health and production》2009,41(8):1623-1631
Intake, growth and carcass yield of indigenous goats fed basal diets of market wastes of sweet potato (Ipomoea batatas) vines (SPV) and scarlet eggplant (Solanum aethiopicum) (SEP) were examined in two experiments. In experiment I, the effect of presentation method (chopping, hanging or adding
molasses) on the intake of SEP and SPV was evaluated. Presentation method did not influence the intake of SPV while hanging
resulted in the highest (P < 0.05) intake of SEP. In experiment II, 24 male growing goats were supplemented with a concentrate
(25% cottonseed cake +75% maize bran) in four dietary groups: SEPD, SPVD, SEP+SPV and Control where elephant grass (Pennisetum purpureum) was offered as the roughage. SEP were offered by hanging, while SPV were chopped. The goats were slaughtered after 12 weeks
of feeding. Goats in the SEPD group constantly lost weight, hence were not followed to the end. Average daily gain and hot
carcass weight were highest (P < 0.05) in the SPVD group (44 g/d and 8.4 kg, respectively), but similar between the SEP+SPV
(19 and 6.8) and Control (21 and 6.9) groups. In conclusion, SPV can support goat meat production where standard feed resources
are scarce when fed with an energy-protein concentrate. SEP are poorly consumed by goats, hence cannot be used as their sole
basal feed. 相似文献
15.
为研究植物乳酸杆菌对感染肠炎沙门氏菌蛋鸡生产性能、蛋品质及血浆生化指标的影响,本试验选用400只沙门氏菌阴性蛋鸡,随机分成4个处理组,每处理组5个重复,每个重复20只试鸡。试验第1周,对照组（T1、T3组）饲喂基础日粮,试验组（T2、T4组）在基础日粮添加2×108 CFU/g植物乳酸杆菌。饲喂1周后,T3、T4组试鸡连续2 d灌服1 mL肠炎沙门氏菌悬浮液（1.0×108 CFU/mL）,T1、T2组试验鸡口服等量无菌PBS溶液。结果显示：①蛋鸡感染肠炎沙门氏菌后可极显著降低产蛋率（PSE=0.02）及平均日采食量（PSE=0.01）。添加植物乳酸杆菌可显著提高产蛋率（PLP=0.02）,显著降低料蛋比（PLP=0.04）。②蛋鸡感染肠炎沙门氏菌后,添加植物乳酸杆菌可显著增加蛋壳厚度（PLP=0.01）和蛋壳强度（PLP=0.02）,显著降低蛋黄颜色（PLP=0.02）。③蛋鸡感染肠炎沙门氏菌后可极显著提高蛋鸡血浆中碱性磷酸酶（ALP）含量（PSE<0.01）,植物乳酸杆菌干预可显著提高谷草转氨酶（AST）（PLP=0.02）、钙（PLP=0.04）和磷（PLP=0.04）的含量。综上所述,植物乳酸杆菌可显著改善蛋鸡生产性能和蛋品质,维持蛋鸡生理生化指标稳定,同时可缓解沙门氏菌带来的病理损伤,保障蛋鸡机体健康。 相似文献
16.
Ole-Mapenay, I.M., Mitema, E.S. and Maitho, T.E., 1997. Aspects of the pharmacokinetics of doxycycline given to healthy and pneumonic East African dwarf goats by intramuscular injection. Veterinary Research Communications, 21 (6), 453-462The effect of experimentally induced Pasteurella haemolytica pneumonia on the pharmacokinetics of doxycycline (Doxycen Retard) administered intramuscularly was studied in seven East African dwarf goats. The study was conducted in two consecutive phases, separated by a washout period of four weeks. The experimental infection, induced by intratracheal administration of 5 ml of 107 to 109 cfu/ml of Pasteurella haemolytica, produced a temperature rise, depression and laboured breathing within 6-12 days after inoculation.The concentrations of doxycycline in the serum were determined by a quantitative microbiological assay using an agar-gel diffusion method employing Bacillus cereus var mycoides (ATCC 11778) as the test organism, with a level of detectability of approximately 0.05 µg/ml. The concentration-time curve of doxycycline in the serum after intramuscular injection of 20 mg/kg bodyweight of the long-acting formulation before and after experimental infection was adequately described by a one-compartment open model.The maximum serum concentrations (Cmax) of doxycycline were lower in pneumonic goats than in healthy goats (3.87 ± 0.52 and 5.56 ± 0.213 µg/ml, respectively), suggesting an increased distribution volume in the peripheral compartment. The mean ± SEM absorption rate (ka) before infection (1.13 ± 0.02 h-1) was smaller than that after infection (8.23 ± 3.81 h-1), but the difference was not significant. The apparent elimination half-life (t1/2) (24.51 ± 0.02 h) after infection was significantly increased (p < 0.05), while the corresponding rate constant () was decreased (p < 0.01). The absorption half-life (t1/2) (0.137 ± 0.03 h) was significantly decreased (p < 0.01) after infection. The distribution volume (Vd()) was significantly increased after infection (p < 0.05). It is concluded that, although experimental infection had an effect on the disposition kinetics of doxycycline, this was not sufficiently pronounced to require alteration of the dosage during disease. 相似文献
17.
William A. Hozza George C. Kifaro John G. Safari Daniel E. Mushi 《Tropical animal health and production》2013,45(8):1789-1794
A 2?×?3 factorial experiment was carried out to evaluate the effect of goat genotypes and different concentrate levels on growth and slaughter characteristics of Small East African × Norwegian crossbred (SEA × N) and Small East African (SEA) goats. The three concentrate levels were T0 (no access to concentrate), T66 (66 % access to ad libitum concentrate allowance) and T100 (100 % access to ad libitum concentrate allowance). Twenty-four castrated goats of each genotype (18 months old with an average weight of 16.7?±?0.54 kg) were randomly allotted into T0, T66 and T100 treatments. Daily feed intake and fortnight body weight measurements were recorded for the whole 84-day experimental period, after which the animals were slaughtered. Feed intake of T100 animals was 536 g/day, which was 183 g/day higher than that of the T66 group. Supplemented goats (T66 and T100) had significantly (P?<?0.05) higher daily gain and body condition score, and better feed conversion efficiency and dressing percentage than T0 goats. The SEA goats had higher (P?<?0.05) hot carcass weight (8.2 vs. 7.9 kg) and showed better (P?<?0.05) dressing percentage than SEA × N animals. Among supplemented goats, the cost of a 1-kg gain under T66 was Tshs 213/= cheaper than T100 (US$1?≈?Tshs 1,500). It is concluded that goats should be grazed and supplemented with 353 g concentrate/day for satisfactory fattening performance and higher economic return on investment. 相似文献
18.
SHI Li-guang ZHOU Xiong XUN Wen-juan HOU Guan-yu ZHOU Han-lin HUANG Xian-zhou 《中国畜牧兽医》2016,43(1):101-107
This experiment was conducted to study the effect of selenium and vitamin E supplement on semen quality, antioxidant enzyme activities and heat shock protein expression of goat in Hainan high temperature season.16 adult Hainan Black goat with good health and approximate weight were randomly divided into 4 groups, fed with basal diet(control group), basal diet+0.5 mg/kg Se(Se group), basal diet+100 mg/kg VE(VE group), and basal diet+0.5 mg/kg Se+100 mg/kg VE(Se+VE group), respectively.The experimental period was 93 d.Semen samples were collected in the last week of the experiment on two consecutive days.The semen quality, antioxidant enzyme activities and heat shock protein expression were analyzed.The results showed that compared with control group, the ejaculate volume was not significantly affected by Se or VE supplement(P>0.05).Sperm density and sperm motility were increased significantly by Se and VE supplement(P<0.05), and the abnormal rate was decreased extremely significantly(P<0.01).The goats fed with Se and VE also had higher activities of GSH-Px(P<0.01), SOD(P<0.05), CAT(P<0.05) and T-AOC(P<0.01), and lower MDA concentration in seminal plasma(P<0.05).The relative expression levels of HSP70 and HSP90 mRNA in supplement groups were decreased extremely significantly(P<0.01).However, there were some certain differences between the Se and VE supplement groups on semen quality and heat shock protein expression.In conclusion, the supplementation of Se and VE could help to improve goat semen quality by increasing the sperm density, sperm motility, the antioxidant enzyme activities, and decreasing the abnormal rate in hot season of Hainan.Finally, Se and VE supplement had good effects on relieving the environment heat stress. 相似文献
19.
补饲硒和维生素E对高温季节山羊精液品质、抗氧化酶活性及热休克蛋白表达的影响 总被引：1，自引：0，他引：1
试验旨在研究在海南夏季高温饲养条件下,山羊补饲硒和维生素E对其精液品质、抗氧化酶活性及热休克蛋白表达的影响。选用16只健康状况良好、体重相近的海南黑山羊成年公羊,随机分成4组,分别饲喂基础日粮(对照组)、基础日粮+0.5mg/kg Se(Se组)、基础日粮+100mg/kg VE(VE组)和基础日粮+0.5mg/kg Se+100mg/kg VE(Se+VE组),试验期93 d。试验期结束前1周采集精液,评价精液品质、测定精浆抗氧化酶活性和精液热休克蛋白表达。结果表明,与对照组相比,补饲Se和VE对海南黑山羊射精量影响差异不显著(P>0.05);补饲Se和VE能显著提高海南黑山羊的精子密度和精子活力(P<0.05),极显著降低精子畸形率(P<0.01);极显著增加精浆谷胱甘肽过氧化物酶活性和总抗氧化能力(P<0.01),显著增加超氧化物歧化酶和过氧化氢酶活性(P<0.05),显著降低丙二醛浓度(P<0.05);补饲Se和VE还极显著降低了精液HSP70和HSP90mRNA的表达水平(P<0.01),但各补饲组之间对精液品质改善效果和热休克蛋白表达丰度的影响存在一定差异。综上所述,补饲Se和VE有助于提高热带地区夏季高温季节山羊精子密度、精子活力,降低畸形率,同时还能增强精浆中抗氧化酶的活性,改善精液品质,进而起到缓解环境热应激的效果。 相似文献
20.
Growth and carcass characteristics of male Sahelian goats fed leaves or pods of Pterocarpus lucens or Acacia senegal 总被引：1，自引：0，他引：1
The effect of feeding browse on growth and carcass characteristics was studied using thirty-two 10–12 months old growing Sahelian goats weighing an average of 15.6 kg. The treatments were four diets: Acacia senegal pods, Pterocarpus lucens leaves and pods and a positive control. The browses were offered ad libitum and supplemented with 200 g of hay of Schoenefeldia gracilis and 200 g of millet bran, while the control group received 200 g of millet bran, 200 g of cottonseed cake and hay ad libitum. The highest DM intake was observed for goats fed A. senegal pods, resulting in higher CP intake from this diet. The diet with P. lucens leaves gave a higher feed consumption than the control diet, but CP intakes were similar. The goats fed P. lucens pods diet had the lowest CP intake. The higher intake of the A. senegal pods diet resulted in higher growth rate (56 g/day), comparable to the P. lucens leaves and the control diets (55 and 51 g/day respectively). However, the feed conversion ratio was the lowest for the control diet. The carcass weight, dressing percentage and weight of the primal cuts were higher for goats fed A. senegal pods, P. lucens leaves and the control diet. In conclusion A. senegal pods and P. lucens leaves showed good intake characteristics for goats under stall-feeding conditions. Pods from P. lucens, resulting in lower performance, can be fed with small amounts of millet bran for maintenance of goats during the dry season. 相似文献