共查询到19条相似文献，搜索用时 275 毫秒
1.
不同能量蛋白水平日粮对崂山奶山羊消化代谢的影响 总被引：1，自引：0，他引：1
本试验选用12只健康的经产崂山奶山羊,分为4组,即高能高蛋白组(简称HH组)、高能低蛋白组(简称HL组)、低能高蛋白组(简称LH组)和低能低蛋白组(简称LL组),每组3只,采用全收粪尿法进行消化代谢试验。结果表明:HH组的产奶量显著高于LH组和LL组(P<0.05),进食氮、尿氮、粪钙、进食磷显著高于LL组(P<0.05),HH组和LH组的尿氮、粪钙显著高于HL组和LL组(P<0.05);HL组尿氮显著低于其他各组(P<0.05),HH组和LH组的肌酐(CRE)显著低于HL组(P<0.05);HH组乳脂肪含量显著低于其他各组(P<0.05),其他指标各组间差异不显著(P>0.05)。分析表明,高能量水平(NE=5.3 MJ/kg)有利于提高崂山奶山羊的采食量和产奶量,低蛋白水平日粮(CP=12.5%DM)可提高氮的表观消化率4%～5%,有利于氮的消化和利用。 相似文献
2.
本试验旨在研究牛至油(Oo)和肉桂醛(CA)组合添加对奶牛产奶性能和氮排泄的影响。选取年龄、体重、胎次、产奶量、乳成分及泌乳期[(90±15)d]相近的荷斯坦奶牛40头,随机分为10个组,每组4头。对照(C)组饲喂基础饲粮,各试验组在基础饲粮中添加不同水平组合的Oo和CA。其中,Oo设3个添加水平,分别为11.5(L)、13.0(M)、14.5g/(d头)(H);CA设3个添加水平,分别为15.0(L)、18.0(M)、21.0g/(d头)(H),共组成9个组合,分别为LL、LM、LH、ML、MM、MH、HL、HM、HH组(第1个字母为Oo添加水平,第2个字母为CA添加水平)。预试期15d,正试期60d。结果表明:1)LH、HH、LM、MM、MH、HL组产奶量均极显著高于C组(P<0.01)。2)各试验组乳体细胞数均极显著低于C组(P<0.01)。LH、ML、LM、MM组乳脂率极显著高于C组(P<0.01),LL、HH组显著高于C组(P<0.05)。LH、HM、HH、ML组乳蛋白率极显著高于C组(P<0.01),MH、LM、MM组显著高于C组(P<0.05)。3)LH、MH、HH、MM、LL、LM、HM组总氮排泄量均极显著低于C组(P<0.01),ML组显著低于C组(P<0.05)。LH、HH组粪氮极显著低于C组(P<0.01),LL、LM、MH组显著低于C组(P<0.05)。LH、MH、MM、HH组尿氮极显著低于C组(P<0.01),HM组显著低于C组(P<0.05)。MH、HL氮沉积组极显著高于C组(P<0.01),MM、LL、LH组显著高于C组(P<0.05)。LH、HH、LM组氮表观消化率极显著高于C组(P<0.01),MH、LL组显著高于C组(P<0.05)。由此可见,饲粮中联合添加Oo和CA可以提高奶牛的产奶性能,降低氮排泄量;综合考虑上述指标,在本试验条件下,最佳组合为Oo11.5g/(d头)、CA21.0g/(d头)。 相似文献
3.
架子牛育肥是目前我国肉牛生产的主要形式,为了为架子牛育肥提供参考依据,本文分析了架子牛育肥的不同牛源购进价格和不同初始体重的育肥生产经济效益。结果表明,架子牛的初始体重明显影响育肥的效益,购进小体重架子牛进行育肥的每天的总收入低,但牛源成本也低;架子牛价格的上涨使肉牛育肥收入明显增加。 相似文献
4.
本试验旨在研究饲粮氮、磷水平对肉仔鸡生长性能、胴体性状和血清生化指标的影响,为制订肉仔鸡适宜饲粮粗蛋白质(CP)、磷供给量提供依据.选取1日龄健康的罗斯308肉仔鸡1 200只,分1～7日龄、8～21日龄、22～35日龄和36～ 40日龄4个阶段饲养,试验饲粮为玉米-小麦-豆粕型,每个阶段按饲粮氮、磷水平分成4组,即高氮高磷组[HH组,CP:22.70％、21.60％、19.50％、17.50％;非植酸磷(NPP):0.45％、0.40％、0.35％、0.30％]、高氮低磷组[HL组,CP:22.70％、21.60％、19.50％、17.50％;NPP:0.30％、0.25％、0.20％、0.15％;耐高温植酸酶(TP):500、1 000、1 500、2 000 U/kg]、低氮高磷组(LH组,CP:20.70％、19.70％、17.70％、15.70％;NPP:0.45％、0.40％、0.35％、0.30％)、低氮低磷组(LL组,CP:20.70％、19.70％、17.70％、15.70％; NPP:0.30％、0.25％、0.20％、0.15％;TP:500、1 000、1 500、2 000 U/kg),每组10个重复,每个重复30只,公母各占1/2.结果表明:1)1～35日龄,HH组和HL组35日龄平均体重极显著高于LH组(P＜0.01),显著高于LL组(P＜0.05),HH组和HL组平均日增重(ADG)显著高于LH组(P＜0.05),HL组料重比显著低于LH组和LL组(P＜0.05),HH组平均日采食量(ADFI)极显著高于LH组(P＜0.01),显著高于LL组(P＜0.05);1～40日龄,HH组40日龄平均体重显著高于LH组(P＜0.05),HH组ADG和ADFI显著高于LH组(P＜0.05);其他指标各组间差异不显著(P＞0.05);2)HH组和LH组血清碱性磷酸酶活性显著高于HL组(P＜0.05),极显著高于LL组(P＜0.01),HH组血清尿酸含量极显著高于LH组(P＜0.01),显著高于LL组(P＜0.05),HL组血清尿酸含量显著高于LH组(P＜0.05).饲粮氮、磷水平对肉仔鸡血清其他生化指标和胴体性状无显著影响(P＞0.05).分析表明,罗斯308肉仔鸡采用4阶段饲养法,1 ～ 35日龄,HL组(CP:22.70％、21.60％、19.50％、17.50％;NPP:0.30％、0.25％、0.20％、0.15％;TP:500、1 000、1 500、2 000 U/kg)增重效果最好,经济效益最高;1～40日龄,LL组(CP:20.70％、19.70％、17.70％、15.70％; NPP:0.30％、0.25％、0.20％、0.15％; TP:500、1 000、1 500、2 000 U/kg)经济和生态效益最高. 相似文献
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6.
试验旨在研究不同类型青贮对肉牛生长性能及经济效益的影响。选择体重相近、体况良好的西门塔尔牛60头,随机分为4组,每组15个重复,每个重复1头牛。试验Ⅰ组西门塔尔牛饲喂全株玉米青贮,试验Ⅱ组西门塔尔牛饲喂稻草青贮,试验Ⅲ组西门塔尔牛饲喂花生秧青贮,试验Ⅳ组牛饲喂构树青贮,各组精料相同。试验期100 d。结果显示:与试验Ⅱ组相比,试验Ⅰ组、Ⅲ组、Ⅳ组肉牛末重均显著提高(P<0.05),平均日增重均极显著提高(P<0.01),料重比均极显著降低(P<0.01)。饲料投入排序为试验Ⅲ组>试验Ⅳ组>试验Ⅰ组>试验Ⅱ组;各组试验牛增重收入分别为38.50、28.50、36.00和37.25元/(头·d);试验Ⅰ组的经济效益最高,为10.74元/(头·d)。研究表明,使用全株玉米青贮饲喂肉牛的生长性能较好,经济效益最高,可在肉牛育肥中推广应用。 相似文献
7.
为了提升河西肉牛产品特别是血液制品的质量及产业效益,利用饲料中添加中草药添加剂的方法对河西肉牛架子牛进行了育肥、屠宰试验。采取低剂量中草药组、高剂量中草药组和对照组肉牛血样,用专门仪器和方法测定了血液中5种血清矿物质离子、7种血清代谢产物及5种血清酶等生化指标的含量。结果表明:高剂量中草药组肉牛血清中的Na、Mg离子及乳酸脱氢酶含量均极显著高于低剂量组和对照组(P<0.01),Cl离子含量极显著高于对照组(P<0.01),其葡萄糖、肌酐、甘油三酯含量均显著高于对照组(P<0.05),谷丙转氨酶显著低于其他两组肉牛(P<0.05),而谷草转氨酶(AST)却显著高于其他两组肉牛(P<0.05);低剂量组和高剂量组肉牛血清中的高密度脂蛋白极显著高于对照组(P<0.01),碱性磷酸酶极显著低于对照组肉牛(P<0.01),而谷丙/谷酸则显著高于对照组肉牛(P<0.05)。结论:试验配制的中草药饲料添加剂对肉牛血液生化指标有良好的影响,对高剂量组肉牛的影响更为明显;饲喂中草药饲料添加剂的肉牛生长发育、营养状况均显著好于对照组,但高剂量组更优;利用高剂量中草药饲料添加剂饲喂的肉牛,其血液在制造保健用品方面有广阔开发前景。 相似文献
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[目的]为探讨直线育肥、架子牛育肥模式对科尔沁肉牛育肥经济效益的影响,特开展本试验研究,以期为农牧民提供参考。[方法]选取6～8月龄250～350 kg体重体型均等的科尔沁肉牛30头散栏饲养10个月出栏,10～12月龄350～400 kg的架子牛30头栓系饲养8个月出栏。出栏后分别测定两组试验牛的出栏体重,根据试验数据,同时考虑投入固定成本、人工成本、饲料成本等各种因素,进一步计算分析两组牛的经济效益。[结果]组1毛利率高于栓系饲养模式,组1比组2盈亏平衡点更低。[结论]直线育肥和架子牛育肥模式各有利弊。直线育肥模式利润高但养殖周期较长,架子牛育肥模式利润低但养殖周期较短。 相似文献
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采用吉林省126个肉牛养殖户的调查数据,对不同养殖规模和不同育肥方式的经济效益进行了计算,并通过C-D生产函数模型,测算了各投入和产出因素对农户肉牛养殖经济效益的影响程度。结果表明,架子牛育肥方式和50～99头规模组效益最佳,而出售时牛的体重、出售单价、购牛成本及精饲料费用因素是影响农户肉牛养殖效益的最主要因素,扩大规模对提高肉牛成本利润率也是有利的。建议通过保护基础母牛、加强良种繁育、规范农户饲养技术、发展适度规模养殖等途径来提高肉牛养殖户的经济效益。 相似文献
10.
为了确定河西肉牛最优杂交组合,试验采用单因素方差分析,将河西肉牛5个杂交组合的F1代公牛架子牛分为5个试验组(夏♂×西杂♀组、西♂×西杂♀组、皮♂×西杂♀组、安♂×西杂♀组、德♂×西杂♀组),用自行设计的配方日粮进行育肥及屠宰试验。结果表明:5个杂交组合F1代育肥牛的始重、末重(屠宰前活重)、胴体重及屠宰率差异均不显著(P>0.05);安♂×西杂♀F1代肉牛日增重最高[(2.18±0.06)kg],且与其他4个组合相比差异显著(P<0.05),说明安♂×西杂♀为最优杂交组合。 相似文献
11.
An approach was developed for describing live weight gain and the contribution of wet gut fill gain to live weight gain in growing cattle. In a continuous growth study, energy densities of winter:spring diets were used to define four treatment groups of cattle. Concentrates and forages were the major ingredients of higher and lower energy-density diets, respectively. Cattle receiving high and low energy sequences (HH and LL) were designated as control groups and were compared with two change-over groups: high to low (HL) and low to high (LH). Switches involved simultaneous changes in several feed characteristics. Every 2 wk for 4 mo, 39 heifers and 19 steers were weighed. Switching young cattle to another diet affected growth during the 2 wk immediately after the switch. After being switched to the lower energy-density diet (i.e., pasture), HL and LL groups lost (P less than .001) from 3.5 to 27.4 kg in both fed and fasted weight. Neither fed nor fasted weights of HH and LH steers changed during the switch to the higher energy-density diet (i.e., concentrates); HH and LH heifers continued to gain (P less than .001). Throughout the remainder of the study, growth rates of cattle were similar for HH and LH groups and for HL and LL groups. In spring, cattle consuming concentrate diets (HH and LH) had greater fill (P less than .001) than pasture-fed contemporaries (HL and LL). Less frequent measurement of growth characteristics would have obscured important facets of growth. A loss of weight followed by continuous gain is not equivalent to a reduced growth rate. 相似文献
12.
Rosalina M. LAPITAN Arnel N. DEL BARRIO Osamu KATSUBE Tomomi BAN-TOKUDA Edgar A. ORDEN Alberto Y. ROBLES Libertado C. CRUZ Yukio KANAI Tsutomu FUJIHARA 《Animal Science Journal》2008,79(1):76-82
The objective of this study was to compare the fattening performance in Brahman grade cattle (crossbred cattle) and crossbred water buffalo at the same young age and fed with high roughage based fattening rations in the Philippines. Ten crossbred cattle and 10 crossbred water buffalo, aged between 18 and 24 months old were used in this experiment. The animals were fed diets consisting of 85% Napier or Para grass and 15% concentrate mixture (CM) on a dry matter (DM) basis. The grass, total DM intake and bodyweight gain were significantly (P < 0.01) higher for the crossbred water buffalo than for the cattle. There was no species significant difference in the digestion coefficient and feed conversion rate between the crossbred cattle and water buffalo. The return over feed cost for fattening was significantly (P < 0.05) higher in the crossbred water buffalo than in the cattle. These results clearly indicate that under high roughage‐based fattening rations, young crossbred water buffalo are better able to utilize the roughage and they perform better in terms of feed intake and live weight gains than the crossbred cattle in the Philippines. 相似文献
13.
肉牛强度育肥高新技术应用效果 总被引：6，自引：0，他引：6
经调查，山西省某国营煤矿肉牛育肥场，聘请高级科技人员，采用最新的科研成果－－Ｅ－Ｎ和ＸＤＣＰ蛋白新体系，配套应用添加剂和饲管新技术，使强度育肥生产技术经济指标达到罗高水平。８８头育肥牛平均饲养１４２ｄ，日增重１．３２ｋｇ，料重比２．４４。其中始３００ｋｇ以上的２１头，强度育肥９８ｄ，日增重２．２９ｋｇ，料重比１．８９。按市价计算，每增重１ｋｇ毛刺３．８７元，头均１１２８．６２元，取得了育肥期短，增 相似文献
14.
全株玉米青贮料喂育肥牛的试验 总被引：4，自引：0，他引：4
选用体重相近的鲁本和秦本杂交牛24头,随机分为2组(每组12头),分别饲喂全株玉米青贮料(试验组)和干玉米秸秆(对照组),观察全株玉米青贮料饲喂育肥牛的效果。结果表明,试验组牛育肥期平均日增重较对照组提高了46.2％(P<0.01),试验组牛和对照组牛每增重1 kg消耗精粗饲料量分别为1.052 kg、8 kg和3.174kg、10.16 kg;分析盈利情况,试验组牛较对照组牛平均每头多盈利40.73元(P<0.01),表明全株青贮玉米喂牛,饲料报酬高,经济效益好,应大力推广。 相似文献
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Rosalina M. LAPITAN Arnel N. DEL BARRIO Osamu KATSUBE Tomomi TOKUDA Edgar A. ORDEN Alberto Y. ROBLES Tsutomu FUJIHARA Libertado C. CRUZ Yukio KANAI 《Animal Science Journal》2004,75(6):549-555
Twenty growing crossbred cattle and crossbred water buffalo (carabao) with an average age of 22 (18–24 months) months were equally distributed into two treatment groups according to species. The animals were fed with the same ration made up of corn silage (50%) + wet brewer's spent grain (30%) + concentrate mixture (20%), and their fattening performance was monitored. The digestibilities of the different nutrients were likewise determined. The economics of raising the animals under intensive production system was calculated. Species differences did not influence total dry matter intake of the animals, when expressed as percentage of the bodyweight and per metabolic body size. There were no significant differences in digestion coefficients of the different nutrients, except for crude protein in crossbred water buffalo and crossbred cattle, although the digestibility of dry matter, organic matter and nitrogen free extract tended to be high in the former than in the latter. Likewise, average daily gain (ADG) was similar, although crossbred water buffalo had numerically higher ADG (828.6 vs 785.5 g) than crossbred cattle during the 6 months feeding. During the first 3 months of feeding (1–90 days), the ADG of crossbred water buffalo was 1066.1 g compared to 940.1 g for crossbred cattle. From 91 to 180 days, the crossbred cattle had slightly higher ADG (630.1 vs 591.1 g) but also the difference was not significant. The return above feed cost was comparable for crossbred cattle and crossbred water buffalo during the first 90 days of feeding. However, extending the feeding period from 91 to 180 days , income over feed cost was higher (P < 0.05) for crossbred cattle by PhP 5.3/kg gain than crossbred water buffalo. Results showed that crossbred water buffalo could attain similar growth rate with that of crossbred cattle under intensive system, when fed with high quality feed materials. 相似文献
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[目的]为了观察不同品种杂交肉用牛的育肥效果.[方法]试验选择20月龄左右(体重300±20.5 kg)的西杂牛(西门塔尔♂×本地黄牛♀)、利杂牛(利木赞♂×本地黄牛♀)和本地黄牛各20头,以青贮玉米和苜蓿干草为基础粗饲料,经过90d的短期肥育,研究肉牛肥育效果与品种之间的关系,进而分析各项屠宰指标.[结果]表明:西杂... 相似文献
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WANG Jun LIU Xiao-fei JIA Ya-xiong GUO Jiang-peng LU Yong-qiang QI Zhi-guo CHANG Liang YANG Jian-jun XU Meng 《中国畜牧兽医》2017,44(7):2071-2078
This study was aimed to determine the effects of different crossbred combinations on fatting performance in beef cattle. Using single factor randomized block design, 30 bulls (health, similar weight and age) were chosen, Simmental cattle×Kerqin beef cattle (group A), Charolais cattle×Kerqin crossbred beef cattle (group B) and Kerqin beef cattle (group C) were divided into three groups with 10 bulls per group. After 95 d, the body weight, slaughter performance, meat quality and the economic benefits of fattening were measured. The results showed that there were no significant influence on dry matter intake among trials (P>0.05). The F/G, ethanolic extract (EE) of muscle in crossbred groups (groups A and B) were significant lower than group C (P<0.05). The weight of carcass, weight of meat, rate of carcass, and the weight of shank, plate, chine and rump in crossbred groups were significant higher than group C (P<0.05). There were no significant difference in content of amino acids among groups (P>0.05),and it had difference in the content of palmitoleic acid (PAA),stearic acid(SA) and linoleic acid (LA). In this trial, it had better fattening performance and the economic benefits in crossbred cattle groups than Kerqin beef group cattle, but the ethanolic extract and unsaturated fatty acids of muscle in Kerqin beef cattle were higher than the crossbred groups, and it had better fattening performance by crossbred. 相似文献
18.
本研究旨在分析全混合日粮饲喂技术与传统的精粗分饲对育肥肉牛增重效果、产肉性能及经济效益的影响。采用完全随机单位组设计方法,选择体重(455±10)kg、年龄相近的西门塔尔杂交品种育肥牛14头,随机分为2组,分别为精粗分饲组(对照组)与全混合日粮组(试验组),两组只是在饲喂方式的不同,其余饲养管理条件均一致,试验期153 d。结果表明:(1)头均日增重对照组(968.2±86.84)g,试验组(1 078.5±40.04)g,提高了11.4%,差异达到显著水平(P<0.05);(2)屠宰率、净肉率、胴体产肉率、肉骨比值、眼肌面积、失水率与不同等级分割肉占净肉重的比例等,两组均存在差异,但未达到显著水平(P>0.05);(3)累计增重利润试验组比对照组多243.4元。结果表明在肉牛产业化生产中,应用推广全混合日粮饲喂技术,替代传统的精粗分饲,效果更好。 相似文献