共查询到20条相似文献，搜索用时 62 毫秒
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<正>农业部统计,2月底全国生猪存栏44330万头,比上月减少2.57%,同比减少0.59%,是2009年1月以来的最低存栏量;能繁母猪存栏4890万头,比上月增加0.37%,同比减少1.95%。业内 相似文献
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农业部统计,4月底全国生猪存栏44920万头,环比增长0.38%,同比增长3.03%;能繁母猪存栏4695万头,环比减少0.32%,同比减少1.37%。 相似文献
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农业部统计,1月底全国生猪存栏44510万头,环比减少1.92%,同比减少2.18%;能繁母猪存栏4740万头,环比减少0.17%,同比减少2.67%。业内人士认为,生猪、能繁母猪存栏持续减少,5月份前生猪市场供应量将难以增加。商业部统计, 相似文献
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农业部统计,3月底全国生猪存栏44750万头,环比增长0.77%,同比增长1.40%;能繁母猪存栏4710万头,环比减少0.42%,同比减少2.69%（表1）。 相似文献
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农业部统计,2月底全国生猪存栏44410万头,环比减少0.22%,同比增加0.18%;能繁母猪存栏4730万头,环比减少0.21%,同比减少3.27%。 相似文献
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<正>农业部统计,10月底全国生猪存栏45440万头,环比减少0.02%,同比减少3.16%;能繁母猪存栏4690万头,环比减少0.21%,同比减少3.79%。农业部农村经济研究中心11月18日发布的《2010年中国农村政策执行报告》显示 相似文献
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商业部统计．全国11月底生猪存栏46590万头．比上月减少0．71％：能繁母猪存栏4870万头,比上月减少0．1％。业内人士介绍,按年初1月底生猪存栏45616万头．年出栏率138．5％计算。预计2009年全国生猪出栏量63178万头．比2008年增加3．64％．高于2000—2008年的生猪出栏平均增长率1．9％。 相似文献
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<正>农业部统计,8月底全国生猪存栏44180万头,环比增长0.41%,同比减少3.57%;能繁母猪存栏4580万头,环比减少1.08%,同比减少4.9%。资料显示,今年全国生猪存栏量已连续3个月环比略增;能繁母猪存栏量持续减少,累计减幅5.95%。 相似文献
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农业部统计,2月底全国生猪存栏45846万头,环比减少0.14%,同比增长5.5%;能繁母猪存栏4949万头,环比减少0.02%,同比增长3.3%。资料显示,全国生猪存栏量连续3个月环比减少,能繁母猪存栏量持续9个月环比增长后首次回落。 相似文献
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<正>近年来,饲料资源短缺,新的替代资源研究已成为行业热点。棕榈粕、椰子粕作为饲料原料在国外畜牧行业已经应用多年,目前其应用技术 相似文献
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The protein quality of two- or three-component mixtures of blood meal, feather meal and bone meal was characterized by amino acid scores and rat net protein utilization (NPU) values. A graphic method designed to find optimum levels of the limiting essential amino acids in the mixtures was suitable for predicting the optimum of NPU values determined by feeding rats with diets having 10% crude protein. The protein quality of mixtures of blood meal, feather meal and bone meal showed an optimum if blood meal constituted 60% of the protein content of the mixtures; however, poor feed intake and growth data were obtained. 相似文献
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凡纳滨对虾饲料中发酵豆粕替代鱼粉的研究 总被引：4，自引：1，他引：3
用0、6.50%、13.00%、19.50%和26.00%发酵豆粕相应替代0(对照组)、16.67%、33.33%、50.00%和66.67%的鱼粉蛋白的实用饲料,喂养体重为(1.82±0.02)g的凡纳滨对虾56d,结果表明,发酵豆粕替代小于33.33%的鱼粉蛋白对凡纳滨对虾生长性能和饲料利用率无显著影响,过高的替代水平会降低对虾的生长性能和饲料利用率;饲料中发酵豆粕替代鱼粉对虾体水分、蛋白和灰分含量影响不显著,对脂肪含量有显著影响,但当发酵豆粕替代鱼粉蛋白50.00%以上,随着发酵豆粕替代量的增加而脂肪含量则显著降低。 相似文献
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豆粕和发酵豆粕替代鱼粉对卵形鲳鲹摄食生长的影响 总被引：1，自引：0，他引：1
以初始平均体重为(112.21±0.73)g的卵形鲳鲹(Trachinotus ovatus Linnaeus)为研究对象,进行为期70d的摄食生长试验,研究不同添加水平的发酵豆粕和不发酵豆粕对卵形鲳鲹摄食生长的影响。试验共配制8种等氮等能的饲料,其中以全鱼粉饲料为对照组(饲料1);豆粕取代饲料主要以鱼粉和豆粕为蛋白源,其中,发酵豆粕分别替代17.6%、31.4%、45.1%和60.8%的鱼粉蛋白(饲料2～5),普通豆粕蛋白分别替代17.6%、31.4%和45.1%的鱼粉蛋白(饲料6～8)。结果表明,饲料中不同水平的豆粕替代量对卵形鲳鲹的成活率和摄食无显著影响(P0.05),但当豆粕蛋白替代鱼粉蛋白达到45.1%时,会显著降低卵形鲳鲹的特定生长率、饲料转化率和蛋白质效率(P0.05)。饲料中用发酵豆粕蛋白替代鱼粉蛋白达到60.8%时,也显著降低卵形鲳鲹的增重率、饲料利用率(P0.05)。但是与豆粕替代组相比,在45.1%的鱼粉蛋白替代水平下,发酵豆粕组的增重率和饲料利用率显著高于普通豆粕替代组(P0.05)。 相似文献
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Zinc bioavailability in soybean meal 总被引：2，自引：0，他引：2
A phytate-containing soy protein concentrate (SPC) diet (13.5 mg Zn/kg) and a phytate-free egg white diet (.3 mg Zn/kg) were used to determine the relative bioavailability (RBV) of Zn in dehulled soybean meal (SBM) based on Zn depletion-repletion growth bioassays in young chicks. After a 4-d Zn depletion period, chick weight gain responded linearly (P < .01) to graded increments of supplemental Zn (0 to 10 mg/kg) from ZnSO4 x 7H2O, whether added to the Zn-deficient SPC or egg white diet. Slope, however, was over twice as great for the standard curve relating weight gain to supplemental Zn intake for the egg white diet as for the SPC diet. Addition of 7 to 10 mg Zn/kg from SBM to either Zn-deficient diet increased (P < .01) weight gain, but a similar SBM addition to either diet made adequate in Zn did not increase weight gain. Using standard-curve methodology, RBV of Zn in SBM was 78% when the the SPC diet was used, but it was only 40% when the egg white diet was used. The phytate contained in the SPC basal diet therefore markedly reduced the efficiency of utilizing the supplemental inorganic Zn from ZnSO4 x 7H2O. This lowered the slope of the standard curve so that, on a relative basis, the Zn in SBM had a higher RBV value than was the case for Zn utilization in SBM with the phytate-free egg white diet. The 78% Zn RBV value in SBM would seem to have the greatest relevance for practical-type corn-SBM diets. 相似文献
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《畜牧与生物技术杂志(英文版)》2017,(4)
Background: Two experiments were conducted to estimate the net energy(NE) of corn, soybean meal, expel er-pressed rapeseed meal(EP-RSM) and solvent-extracted rapeseed meal(SE-RSM) using indirect calorimetry and to validate the NE of these four ingredients using pig growth performance.Methods: In Exp.1, 24 barrows(initial BW = 36.4 ± 1.6 kg) were allotted to 1 of 4 diets which included a corn basal diet,a corn-soybean meal basal diet and two rapeseed meal diets containing 20% EP-RSM(9.5% ether extract) or SE-RSM(1.1% ether extract) substituted for corn and soybean meal. The design allowed the calculation of NE values of corn,soybean meal and rapeseed meals according to the difference method. In Exp.2, 175 growing pigs(initial BW = 36.0± 5.2 kg) were fed 1 of 5 diets for 28 d, with five pigs per pen and seven replications(pens) per treatment in order to validate the measured energy values. Diets were a corn-soybean meal diet and four diets including 10% or 20% EP-RSM and 10% or 20% SE-RSM.Results: The NE of corn, soybean meal, EP-RSM and SE-RSM were 12.46, 11.34, 11.71 and 8.83 MJ/kg DM, respectively. The NE to ME ratio of corn(78%) was similar to tabular values, however, the NE to ME ratios of soybean meal(70%) and rapeseed meal(76%) were greater than tabular values. The greater NE value in EP-RSM than in SE-RSM is consistent with its higher EE content. Increasing EP-RSM or SE-RSM did not affect the growth performance of pigs and the caloric efficiency of NE was comparable for al diets.Conclusions: The NE of EP-RSM was similar to soybean meal, and both were greater than SE-RSM. The DE, ME and NE values measured in Exp.1 are confirmed by results of Exp. 2 with comparable caloric efficiencies of DE, ME or NE for all diets. 相似文献
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Evaluation of meat meal, chicken meal, and corn gluten meal as dietary sources of protein in dry cat food 总被引：1，自引：0，他引：1 
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下载免费PDF全文 Masayuki Funaba Yuko Oka Shinji Kobayashi Masahiro Kaneko Hiromi Yamamoto Kazuhiko Namikawa Tsunenori Iriki Yoshikazu Hatano Matanobu Abe 《Canadian journal of veterinary research》2005,69(4):299-304
The nutritional value of meat meal (MM), chicken meal (CM), and corn gluten meal (CGM) as dietary sources of protein in dry food formulated for adult cats was evaluated. Twelve healthy adult cats (11 males and 1 female) were used. Dry diets containing MM, CM, or CGM as the main protein source were given for a 3-week period in a 3 x 3 Latin-square design. Digestion and balance experiments were conducted during the last 7 d of each period. In addition, freshly voided urine was taken to determine urinary pH and number of struvite crystals. As compared with the CM diet, dry-matter digestibility was higher and lower for the MM and CGM groups, respectively. Percentages of nitrogen (N) absorption and N retention to N intake were higher in the MM group, and N utilization was not different between the CM group and the CGM group. All cats excreted alkaline urine (pH > 7). Urinary pH, struvite activity product, and number of struvite crystals in urine were lower for the CGM group. There was no difference in retention of calcium and magnesium among the groups. From the point of view of digestibility and N utilization, MM is superior to CGM, and CM is better than or equivalent to CGM as a protein source of dry foods for adult cats. However, when CM is used as a dietary protein source, some manipulation of dietary base excess may be needed to control urinary acid-base balance, because CM contains higher calcium and phosphorus. 相似文献