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1.
OBJECTIVE: To determine the changes in Ca, P, Mg, Na, K, S, Cu, Fe and Zn concentrations of milk during the lactation in pasture-fed Thoroughbred mares and then calculate the dietary mineral requirements of the sucking foal and the lactating mare. PROCEDURE: Milk was sampled on days 1, 3, 7, 14, 21, 28 and at various times between 55 to 65, 85 to 95 and 135 to 150 days after parturition from 21 pasture-fed mares. The concentrations of macro- and micro-elements in the milk were determined by inductively coupled plasma emission spectrometry. RESULTS: Concentrations (mg/L) of these elements were highest in colostrum (Mg 302, Na 561, K 955, S 1035, Cu 0.76, Fe 0.79 and Zn 5.5) except for Ca (1245) and P (895), which where highest on day 7. The mean milk mineral element concentrations (mg/L) over days 55 to 150 were Ca 843, P 543, Mg 47, Na 120, K 590, S 219, Cu 0.19, Fe 0.34 and Zn 2.1. The mean plasma element concentrations (mg/L) over the same period were Ca 120, P 77.1, Mg 17.0, Na 3110, K 168, S 983, Cu 1.1, Fe 1.5 and Zn 0.49. Concentration gradients between plasma and milk were observed and, in the case of Ca, P, Mg, K and Zn, their concentrations in milk were greater than those in plasma, while a reverse situation was observed for Na, S, Cu and Fe. CONCLUSION: With the exception of Ca and P, the highest concentrations of mineral elements were observed in the colostrum. The nursing foal should have access to good pasture or creep feed, because the intakes of Ca, P and Cu from milk may be less than optimum to meet the daily mineral element requirements. 相似文献
2.
本试验旨在研究夏季高温状态下,在减少矿物质(铜、铁、锰、锌)元素的饲粮中补充包膜半胱胺对育肥后期猪生长性能、胴体品质、组织矿物质元素沉积和粪便矿物质元素排放的影响。试验共选用360头健康、平均体重为(103.9±0.7)kg的三元(杜×长×大)杂交育肥猪,采用2×2双因素试验设计,分为4组,每组6个重复,每个重复15头。因素1为饲粮矿物质元素的含量,设计为基础饲粮铜、铁、锌、锰元素含量的100%和80%2个水平;因素2为饲粮包膜半胱胺(半胱胺含量27%)含量,设计为0、1 600 mg/kg(半胱胺含量300 mg/kg)2个水平。试验期30 d。结果表明:1)饲粮减少矿物质元素或补充包膜半胱胺对育肥猪后期的生长性能和胴体品质均无显著影响(P0.05)。2)饲粮减少矿物质元素可显著降低育肥猪肝脏中铬元素的含量及肾脏中钠、钙、铅元素的含量(P0.05),显著升高血清钠元素含量(P0.05);减少矿物质元素的饲粮中补充包膜半胱胺显著或极显著降低肝脏中钾元素含量和肾脏中钠、钙、铅、铜元素含量(P0.05或P0.01),并有降低肝脏锰、锌、铬及钙元素和血清中铬和镁元素含量沉积的趋势(0.05≤P0.10),对维持机体各组织中钠元素的稳定有利。3)饲粮中减少矿物质元素或补充包膜半胱胺极显著减少粪便中铅和铜元素的排放量(P0.01);饲粮减少矿物质元素可显著降低粪便中锌元素的排放量(P0.05),极显著升高镁元素的排放量(P0.05);减少矿物质元素的饲粮中补充包膜半胱胺对粪便中铬元素的排放量有降低趋势(0.05≤P0.10)。由此可见,夏季高温期,在饲粮的铜、铁、锰、锌4种矿物质元素含量减少20%条件下补充1 600 mg/kg包膜半胱胺,能在不影响育肥猪后期生长性能和胴体品质的同时,降低血清、肝脏和肾脏中矿物质元素的沉积,减少粪便铅、铜和铬元素对环境的排放,维持机体电解质平衡。 相似文献
3.
Roberto Costa Juscelino Silva Ariovaldo Medeiros Francisco Carvalho Maria Andrade George Cruz Tairon Pannunzio Dias-Silva Leilson Bezerra 《Animal Science Journal》2021,92(1):e13583
This study estimated the net macro and micromineral requirement from the 48 male uncastrated lambs (24 growing male Santa Inês and 24 growing male Morada Nova hair sheep), with initial weights of 21.7 ± 1.2 kg and 20.8 ± 0.8 kg using the comparative slaughter method. The experimental diet consisted of 30% forage (Buffel—Cenchrus ciliaris (L) hay) and 70% concentrate (corn grain 43.5%, soybean meal 22.0%, vegetable oil 3.0% and mineral supplement 1.5%). The experimental design was a completely randomized with two breeds, four weights, and six replicate. Mineral requirements sufficient to promote weight gain in Santa Inês sheep ranged from 1.75 to 1.03 g Ca, 1.01 to 0.61 g of P, 0.38 to 0.21 g of K, 0.38 to 0.16 of Na, 0.10 to 0.06 Mg, 28.5 to 16.0 mg of Fe, 6.14 to 3.22 mg of Cu, and Zn 23.0 to 14.0 mg/kg per unit of empty body weight (EBW) gain. In the Morada Nova breed, the requirements ranged from 1.96 to 0.84 g of Ca, 1.15 to 0.46 of P, 0.39 to 0.19 of K, 0.28 to 0.13 of Na, 0.10 to 0.05 Mg, 26.2 to 12.9 mg of Fe, 5.59 to 2.46 Cu, and Zn 23.6 to 10.3 mg/kg of EBW gain. Mineral requirements varied mainly in accordance with the proportion of bone mass and fat concentration in the carcass, which were influenced by the slaughter weight of the animals, and therefore should be used in the formulation of dietary mineral supplements. 相似文献
4.
西藏那曲地区高寒草地牧草矿物元素动态变化及盈缺分析 总被引：3，自引：0，他引：3
测定了那曲地区尼玛县高寒草地不同月份围栏内和围栏外牧草矿物元素（Ca、P、Na、K、Mg、Cu和Zn）含量，并根据元素的吸收率及藏山羊矿物元素需要量，对放牧藏山羊采食牧草中矿物元素的盈缺进行了分析。结果表明：同月份围栏内与围栏外的矿物元素含量差异不显著（P〉0．05），但不同季节的变异很大。夏秋季牧草Ca、P、Na、K、Mg、Cu、Zn的含量（Ca1．25％DM，P0．1419％DM，Na0．06％DM，K1．51％DM，Mg0．28％DM，Cu8．70mg／kg，Zn27．35mg／kg）高于冬春季（Ca0．72％DM，P0．0005％DM，Na0．02％DM，K0．43％DM，Mg0．10％DM，Cu3．02mg／kg，Zn8．49mg／kg）。除Mg和青草期的K能满足藏山羊的需要外，其余元素不能满足藏山羊生长、繁殖和泌乳对矿物元素的需要量。 相似文献
5.
The objective was to evaluate the content of P, Ca, Mg, K, Na, Cu, Fe, Zn, Se, and Mn in soil, forage, and serum of horses in several production units (PU) during rainy and dry seasons and predict their concentration in serum from their content in soil and forage. Soil and pastures were sampled in the dry (November–December) and in rainy seasons (June–July), and blood samples were collected from the jugular vein of 76 horses in both seasons at four PU. The experimental design was a completely random design within a 4 × 2 (PU × season) factorial arrangement of treatments. Concentration of minerals in soil differed (P < .05) among PU, and contents of P, Ca, Mg, and K were low; Zn and Fe were high; and Cu and Mn were adequate. Mineral concentrations in forage differed among PU and season, and among PU within season (interaction P < .05). Contents of Ca, Mg, Na, Zn, and Cu were low; Fe was high; and P, K, Se, and Mn adequate. The mineral concentration in equine blood serum differed (P < .05) among PU and season. Overall, there were deficiencies of P, Ca, Mg, Na, Cu, and Se, but adequate amounts of K, Zn, and Fe. There are imbalances of minerals in soil and forages which effected their concentration inequine blood. 相似文献
6.
对双阳梅花鹿初角茸的常规成分和部分矿物质元素进行分析,以便为梅花鹿初角茸的应用提供参考,为制定梅花鹿茸指标性成分标准做基础性探讨,结果表明:梅花鹿初角茸中含有水分6.87%,粗蛋白54.88%,粗脂肪2.46%,粗灰分37.07%;水浸出物10.81%,醇浸出物2.29%,醚浸出物1.36%;常量元素Ca、P、Na、K、Mg、Mn的含量分别为195.340,71.700,7.066,2.476,3.443,5.810 mg/g,微量元素Fe、Zn、Cu的含量分别为176.63,66.93,8.61μg/g。 相似文献
7.
Clauss M Castell JC Kienzle E Schramel P Dierenfeld ES Flach EJ Behlert O Streich WJ Hummel J Hatt JM 《Journal of animal physiology and animal nutrition》2007,91(5-6):193-204
To test whether mineral recommendations for horses are likely to guarantee adequate mineral provision for black rhinoceroses (Diceros bicornis), we investigated the apparent absorption (aA) of macro- and microminerals in eight black rhinoceroses from three zoological institutions in a total of 32 feeding trials with total faecal collection, with additional data from three unpublished studies (18 feeding trials). Feeds and faeces were analysed for Ca, P, Mg, Na, K, Fe, Mn, Cu, Zn and Co. The resulting aA coefficients, and the linear relationships of apparently absorbable dietary mineral content to total dietary mineral content [per 100 g dry matter (DM)], were compared with data for domestic horses. Rhinoceroses had significantly higher aA coefficients for Ca and Mg (because of a higher calculated 'true' absorption), and lower ones for Na and K (because of calculated higher endogenous faecal losses). High absorption efficiency for divalent cations is hypothesized to be an adaptation to a natural diet of particularly high Ca:P ratio (approximately 14:1); an effective removal of Ca from the ingesta guarantees sufficient P availability at the fermentation site in the hindgut. Higher faecal losses of Na and K are hypothesized to be linked to a higher faecal bulk per DM intake in black rhinoceroses as compared with horses because of a generally lower digestive efficiency. There were no relevant differences in the absorption patterns of microminerals. In particular, there were no discernable differences in Fe absorption within the rhinoceroses for diets with and without tannin supplementation. Several of the zoo diets assessed in this study were deficient in Cu, Mn or Zn, and most contained excessive levels of Fe when compared with horse requirements. The findings of this study indicate that differences in mineral absorption between occur even between species of similar digestive anatomy; that in particular, Ca absorption might vary between hindgut fermenters with Ca:P ratio in their natural diet; that Na might be a particularly limiting factor in the ecology of free-ranging rhinoceroses; that moderate doses of tannins do not seem to markedly influence mineral absorption; and that diets for captive animals should contain adequate, but not excessive mineral levels. 相似文献
8.
本试验旨在分析金川县牦牛血清和被毛的矿物元素含量,探讨肋数和年龄对矿物元素含量的影响,并对被毛矿物元素含量与血清中相应元素含量的相关性进行分析。采用二因素有重复试验设计,将32只公牦牛进行分组,按照肋数[14肋(n=17)和15肋(n=15)]和年龄[0(初生)~2岁(n=10)、3~4岁(n=11)、5~6岁(n=5)、7~8岁(n=6)]共分为8组。分别采集血清及被毛样品,进行矿物元素含量分析。结果表明:1)肋数、年龄对血清中的钙(Ca)、铜(Cu)、铁(Fe)、钾(K)、镁(Mg)、锰(Mn)、钠(Na)、锌(Zn)的含量均无显著影响(P0.05);年龄和肋数间无互作(P0.05)。2)肋数对被毛Ca、Cu、Fe、Mg、Mn、Na、Zn含量无显著影响(P0.05);年龄可影响被毛K含量,7~8岁被毛K含量显著高于其他年龄段(P0.05),但对被毛其他元素含量均无显著影响(P0.05),年龄和肋数间无互作(P0.05)。3)被毛Ca、Cu、Fe、Mg、Zn与血清中相应元素含量相关性极显著(P0.01),相关系数分别为0.623 0、0.539 8、0.569 2、0.468 4、0.505 3,而K、M n、Na含量的相关性则不显著(P0.05)。综合可知,金川14肋与15肋牦牛矿物元素含量无显著差异;7~8岁被毛中的K含量显著升高;牦牛被毛、血清Ca、Cu、Fe、M g、Zn含量具有显著的相关性,可由被毛代替血清测定相应的矿物元素含量。 相似文献
9.
10.
几种优良人工牧草矿质元素含量的比较研究 总被引：3，自引：0，他引：3
就地上部而言,在3种豆科牧草中,白三叶以N、P、K、Fe、Co、Na含量较高,红三叶以Mg、Zn含量较高。在3种禾本科牧草中,鸭茅以P、K、Mg、Mn、Cu、Zn、Mo含量较高,草地早熟禾以Fe较高。3种豆科牧草N、Ca、Mg、V、Sr的平均含量显著高于禾本科牧草。地上部与地下部比较,豆科牧草的P、K、Ca、Mn、Zn、Na含量前者显著高于后者;禾本科牧草的N、P、K、B含量,前者明显高于后者。 相似文献
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12.
M. Clauss S. Lang‐Deuerling E. Kienzle E. P. Medici J. Hummel 《Journal of animal physiology and animal nutrition》2009,93(6):768-776
To test whether mineral recommendations for horses are likely to guarantee adequate mineral provision for tapirs (Tapirus spp.), we investigated the apparent absorption (aA) of macro and micro‐minerals in 18 tapirs from five zoological institutions in a total of 24 feeding trials with total faecal collection. Samples of feeds and faeces were analysed for Ca, P, Mg, Na, K, Fe, Cu and Zn. The resulting aA coefficients and the linear relationships of apparently absorbable dietary mineral content to total dietary mineral content (per 100 g dry matter) were compared with data for domestic horses. While there were no apparent differences in the absorption patterns for P, K, Na, Fe, Cu or Zn, the absorption of both Ca and Mg was distinctively higher in tapirs than in horses. Tapirs are browsers that are adapted to a diet of higher Ca content and higher Ca:P ratio than equids, and high absorptive efficiency for Ca might have evolved to ensure that high dietary Ca concentrations do not lead to the binding of dietary P in the intestine, making it unavailable for hindgut microbes. Similar to other hindgut fermenters, in tapirs, absorption coefficients for Ca increased with dietary Ca:P ratio, and urinary Ca:creatinine ratios increased with dietary Ca. Several zoo diets used were deficient in one or more minerals. When compared with faeces of free‐ranging animals, faeces of zoo animals had higher concentrations of most minerals, probably indicating a lesser diluting effect of indigestible fibre in zoo animals. 相似文献
13.
本试验采用田间定点试验方法,研究宜昌市77个有代表性的温州蜜柑果园花10种营养元素含量与果实品质间的关系,探讨用花预测果实品质的可行性。结果表明：花中N、P、K、Ca、Mg、Fe、Mn、Cu、Zn、B元素含量的平均值分别为3.21%、0.36%、1.94%、0.53%、0.26%、64.12mg/kg、19.61mg/kg、12.19mg/kg、31.87mg/kg、29.05mg/kg;其中N、P、Ca含量为弱变异（C.V.≤10）,K、Fe、Cu、B为中变异（1020）。温州蜜柑花中的P、Ca、B含量与果实中的可溶性固形物、可滴定酸、固酸比、可食率含量显著或极显著相关,Mn含量与果实中的可溶性固形物、可滴定酸、可食率含量显著或极显著相关,N、K含量与果实可溶性固形物含量显著相关,P含量与果实Vc含量显著负相关,Fe含量与果实可滴定酸含量显著负相关。根据花中养分状况,可以对果实品质进行预先估计,并通过中期管理达到提高果实品质的目的。 相似文献
14.
Ten Suffolk ram lambs (mean BW 14.4 +/- 1.0 kg, 9 wk of age) were used to evaluate the effects of somatotropin (ST) on the concentration of minerals in tissues. Lambs were treated with daily injections of sterile saline (SAL; n = 5) or with bovine pituitary-extracted ST (.1 mg.kg BW-1.d-1; n = 5) for 13 wk. At slaughter at 22 wk of age, the liver, heart, kidneys, brain, spleen, lungs and testes were removed. Tissues were lyophilized, ground and analyzed for minerals. Daily treatment with ST had no influence on Ca, Na, K or the ratio of Na to K in tissues. Although P was lower (P less than .10) in the liver of ST lambs, the concentration of P remained within a normal range for sheep. The concentrations of both Mg (P less than .10) and Fe (P less than .05) were lower in the spleen of ST lambs. Splenic hypertrophy appeared to occur (P = .13) in ST lambs; the total splenic pool of Mg and of Fe did not differ (P greater than .10) between SAL and ST lambs. The concentration of several other minerals were lower in tissues of ST lambs: Cu in kidneys (P less than .10) and liver (P = .12); Zn (P less than .05) in liver, kidneys and lungs; and Mn in liver (P less than .05). By causing a reduction in the concentration of minerals in tissues, ST may increase the possibility of a metabolic insufficiency of a mineral. Exogenous treatment of animals with ST may modify the metabolic requirements for minerals and thereby increase dietary requirements. 相似文献
15.
对新疆阿勒泰市土山罗布麻保护区的5个不同居群的罗布白麻(Poacynum hendersonii)叶片中的N、P、K、Na、Ca、Mg、Cu、Fe、Zn和Mn 10种营养元素含量进行了测定和比较。结果表明,青杆中花麻为N Ca类型、特细叶中花麻和红杆中花麻为N K类型,N含量在特细叶中花麻中显著高于其他4个居群（P＜0.05）;中细叶中花麻为K Ca类型、白花中花麻为K N类型,其K含量显著高于其他3个居群。5个居群罗布麻叶片中4种微量元素的含量,除红杆中花麻居群中Mn含量最高外,其余4个居群均为Fe>Mn>Zn>Cu;各居群Fe和Zn含量无显著差异;各居群间Mn含量差异显著;青杆中花麻、红杆中花麻和特细叶中花麻Cu含量显著高于中细叶中花麻,白花中花麻与各居群间均无显著差异。相关分析表明,罗布白麻居群中Mg与Mn,K与P,Ca与Mg,Fe与Zn含量呈显著正相关性;而Na与Ca,K与Cu和Mn,P与Cu和N含量呈显著负相关（P＜0.05）。 相似文献
16.
1. In a 42-d feeding trial, 264 one-d-old, as hatched, Cobb 400 broiler chickens (6 pens per group, n = 11 per pen in a 2?×?2 factorial arrangement) were fed on two concentrations of dietary calcium (Ca) (9.0 and 7.5 g/kg in starter, 7.5 and 6 g/kg in grower phases) and supplemental phytase (0 and 500 U/kg diet). 2. During d 0–21, the high Ca + phytase diet improved body weight. During d 0–42, feed intake was increased by the low Ca diet and decreased by phytase supplementation. Feed conversion ratio during d 0–21 was improved by the high Ca + phytase diet. 3. At d 42, Ca in duodenal digesta was reduced by low dietary Ca and supplemental phytase. High dietary Ca reduced P in duodenal and jejunal digesta. Phytase reduced digesta P and increased serum P concentration. 4. Relative tibia length decreased with low dietary Ca and increased with phytase. The robusticity index of tibia was improved by the low Ca diet and phytase supplementation. Phytase supplementation increased tibia ash and concentrations of Ca, magnesium (Mg), manganese (Mn), copper (Cu), zinc (Zn) and iron (Fe) in tibia. The low Ca diet increased Mg, Mn and Fe and reduced Cu and Zn in tibia. 5. It was concluded that 7.5 g Ca/kg during weeks 0–3 and 6 g Ca/kg during weeks 3–6 sustained broiler performance and bone ash, while phytase supplementation facilitated tibia mineralisation, particularly during the grower phase. 相似文献
17.
新鲜绵羊粪尿对土壤和植物矿物质元素含量影响的试验于 1998年在贵州高原草地试验站进行。结果表明 ,绵羊新鲜粪尿加入土壤后 ,土壤 K呈波浪型升高。 K又显著影响土壤 Ca、Fe和Mn的浓度及土壤 p H值。土壤 Na水平呈下降趋势。土壤中 Ca含量与土壤可交换性亚硝态氮和硝态氮显著相关。土壤 Mg的变化不如其他元素变化明显。土壤 Cu受 Ca、Fe和亚硝态氮及硝态氮的影响显著。土壤 Zn比试验前有所下降 ,其含量与土壤铵态氮和亚硝态氮呈显著负相关 ,而与土壤Na、Mg和 Cu呈显著正相关。土壤 Fe在整个试验过程中呈上升趋势 ,UDT处理几乎呈直线上升。土壤 Mn的变化和土壤 K有显著正相关 ,还与铵态氮相关极显著 (R=0 .80 51,P<0 .0 1)。绵羊新鲜粪尿使植物体内 Fe、Zn水平降低 ,但促进植物 Mn的含量升高 ,而对植物 Cu水平影响最小。结果还表明 ,植物体内 K含量受土壤 Cu和 Na的抑制 ,同时还与植物吸收 Mg、Na和 Fe发生拮抗作用 ,促进了植物 Ca的吸收。植物吸收 Na与土壤 Na的浓度显著相关 ,但受到植物吸收 K、Ca和 Mn的抑制。植物 Ca水平与降雨及植物体内 Fe水平呈显著负相关 ,而与土壤可交换性铵态氮和植物体内 K、Mg含量呈显著正相关。植物体内 Mg含量受土壤可交换性铵态氮和硝态氮的显著影响 ,但受土壤 Ca的抑制 相似文献
18.
A study was conducted to determine if supplement withdrawal (omission of dietary vitamin and trace mineral premixes and a two-thirds reduction in dietary inorganic phosphorus) for 28 d preslaughter and the feeding of wheat middlings (dietary concentrations of 5, 15, and 30% from weaning to 16, 16 to 28, and 28 kg to slaughter, respectively) affect growth performance, carcass characteristics, and fecal mineral concentrations ofthe pig, as well as the nutrient content and oxidative stability of the longissimus dorsi muscle. Crossbred pigs (n = 64) were blocked by weight and assigned to one of four dietary treatments in a 2 x 2 factorial design (with or without supplement withdrawal, and with or without wheat middlings). Supplement withdrawal and wheat middling inclusion did not influence average daily gain (ADG), average daily feed intake, gain/feed, or carcass traits, except for a decrease (P < 0.01) in the ADG of pigs from 28 to 65 kg when fed wheat middlings. Supplement withdrawal decreased (P < 0.01) fecal Ca, P, Cu, Fe, Mn, and Zn concentrations. In diets containing full vitamin and mineral supplementation, wheat middling inclusion decreased (P < 0.01) fecal Ca, Cu, Fe, and Zn concentrations and increased (P < 0.01) fecal Mn. Supplement withdrawal decreased (P < 0.05) concentrations of riboflavin, niacin, and P in the longissimus dorsi muscle, but did not affect longissimus dorsi thiamin, vitamin E, Fe, Cu, Zn, and Ca concentrations. Inclusion of wheat middlings increased (P < 0.04) longissimus dorsi thiamin, niacin, riboflavin, and vitamin E concentrations and decreased (P < 0.04) Cu concentrations. However, wheat middling inclusion did not affect (P > 0.05) longissimus dorsi Ca, P, Fe, and Zn concentrations. Dietary treatment did not affect either Cu/Zn superoxide dismutase or glutathione peroxidase activity in the longissimus dorsi. The results from this study indicate that supplement withdrawal and dietary wheat middling inclusion alter pork nutrient content and fecal mineral concentration, but not the oxidative stability of pork. 相似文献
19.
五台山草地自然保护区不同植物化学元素含量的研究 总被引：10，自引：0，他引：10
本文首次对五台山草地自然保护区五个植被垂直带中32种植物的48个样品中N、P、K、Ca、Mg、Mn、Cu、Zn、Co、Cr、Ni、Ph和Cd等13种化学元素的含量进行分析，初步揭示出本区植物中化学元素含量的区域特征以及在不同植被垂直带中草本、阔叶、针叶植物及其不同器官中元素的含量与分布规律． 相似文献
20.
本试验旨在研究35~50 kg道赛特×小尾寒羊杂交公羔钙、磷、钾、钠、镁的维持需要量和净生长需要量。选取(34.54±0.40)kg、6月龄道赛特×小尾寒羊杂交公羔25只分为5组,初期组,中期组,末期100%组、末期60%组、末期40%组(饲喂水平分别为100%、60%、40%),初期组、中期组、末期组分别在羔羊体重为35、43和50 kg时屠宰。测定动物体组织中的钙、磷、钾、钠、镁含量,建立数学模型对矿物质的维持需要量和净生长需要量进行预测。结果显示:道寒杂交公羔在35~50 kg体重阶段,钙、磷、钾、钠、镁的维持需要量分别为0.73、0.72、0.32、0.32、0.13 g/d,基于空腹体重(EBW)的净生长需要量分别为13.47~14.00 g/kg EBW、7.18~7.41 g/kg EBW、0.13~0.17 g/kg EBW、1.20~1.73 g/kg EBW、0.45~0.58 g/kg EBW。本研究得出了35~50 kg道赛特×小尾寒羊杂交公羔矿物质维持需要量和净生长需要量的模型。 相似文献