生長肥育豬的蛋白質(zhì)與氨基酸營養(yǎng)-wenkub
2023-02-05 15:24:48 本頁面
【正文】 酸 需要量 Effect of Energy Level and Lysine:Energy Ratio on Piglet Growth (014 days postweaning)日糧能量水平以及賴氨酸與能量比對仔豬生長的影響（斷奶后 0－ 14 天階段） Lys:DE (g/Mcal) DE (Mcal/kg) 450 455 464 461 492 491 487 517 501 488 490 470 Nam and Aherne (1994) Maximum gain achieved at Mcal/kg energy density and g Lys/Mcal dietary energy 當(dāng)日糧能量濃度為 Mcal/Kg，賴氨酸能量比為 g Lys/ Mcal 日糧能量時(shí)，獲得最大增重。 tryptophan 132 Kerr (1987) 玉米豆粕日糧，蛋白水平 16％ 玉米豆粕日糧，蛋白水平 12％ 12％ 的玉米豆粕日糧＋賴氨酸，蘇氨酸和色氨酸 Effect of ReducedProtein Diets with Lysine, Tryptophan and Threonine on N Excretion 低蛋白日糧添加賴氨酸，色氨酸和蘇氨酸對氮排出的影響 Item Normal . Reduced . Reduced CP +Lys,Thr, Trp N Intake, g/d Fecal N, g/d Urinary N, g/d Kerr et al. (1995) Effect of Amino Acid Addition to a Fortified Shum Gestation Diet 補(bǔ)充了維生素預(yù)混料的高粱妊娠日糧中添加氨基酸的效果 Diet Nitrogen retained, g/d Shumsoybean meal Shum Shum + Lysine Shum + Threonine Shum + Lysine + Threonine Cuaron and Easter (1982) 氮儲留 Differential Absorption of Intactprotein and Unbound Lysine 完整蛋白質(zhì)與非結(jié)合賴氨酸的區(qū)別吸收 01234560 1 2 3 4 5 6T i m e (h ou r s )Blood level of lysine+ S yn th e ti c l ys i n eA l l i n tac t p r ote i n全部完整蛋白質(zhì) ＋合成賴氨酸 Effect of Meal Frequency on the Response of Pigs to Supplemental Lysine 飼喂次數(shù)對豬的添加賴氨酸生長反應(yīng)的影響 Meals/day Lysine g/day Gain g/day Feed/ gain 1 0 435 1 2 491 6 0 446 6 2 530 6 4 553 Batterham and O’Neill (1978) Meal Frequency and Synthetic Amino Acids 飼喂次數(shù)與合成氨基酸 Assume that ad libitumfed pigs eat frequent meals and blood levels are constant. 假定自由采食的豬采食頻繁，血液氨基酸水平保持穩(wěn)定 A concern in animals fed only once each day, eg., gestating sows. 關(guān)注那些每天只飼喂一次的豬，如妊娠母豬 Nutrient Requirements for Swine 豬的營養(yǎng)需要量 Amino acid Liveweight, 體重， kg 15 510 1020 2050 50110 Arginine Histidine Isoleucine Leucine Lysine Methionine + Cystine Phe + Tyr 苯丙＋酪 Threonine 蘇氨酸 Tryptophan 色氨酸 Valine 纈氨酸 NRC (1988) The only classification criterion is weight. Gender, genotype and environment are ignored 僅以體重為分級標(biāo)準(zhǔn)，性別，遺傳型和環(huán)境因素忽略不計(jì) 氨基酸 精氨酸 組氨酸 異亮氨酸 亮氨酸 賴氨酸 Fact about Requirements 關(guān)于需要量 Expressed as a percent of the diet 以占日糧百分比形式表示 Decrease with age 隨年齡增加而降低 Increase with increasing caloric density of diet 隨日糧熱量濃度增加而增加 Are greater for gilts than barrows 母豬的需要量大于閹公豬的需要量 Are greater for more muscular animals 肌肉型豬的需要量更大 Are greater for maximal leanness than maximal gain 達(dá)到最大瘦肉量的需要量比獲得最大增重所需更大 Are affected by the protein level in the diet 受日糧蛋白水平影響 Effect of Dietary Lysine on Growth Performance and Carcass Traits of Late Finishing Gilts 日糧賴氨酸水平對肥育后期小母豬生長性能和胴體性狀的影響 Digestible Lysine, % .35 .43 .50 .58 .65 Gain, g/d 834 906 993 969 976 Feed, g/d 3215 3341 3343 3241 3218 Gain/feed 260 271 297 299 303 Lean gain, g/d 307 332 354 365 366 Backfat, mm L. dorsi, cm2 Hahn (1994) Effect of Dietary Lysine on Growth Performance and Carcass Traits of Late Finishing Barrows 日糧賴氨酸水平對肥育后期閹公豬生長性能和胴體性狀的影響 Digestible Lysine, % .35 .43 .50 .58 .65 Gain, g/d 914 965 1118 1046 1057 Feed, g/d 3547 3601 3945 3685 3749 Gain/feed 255 267 284 282 281 Lean gain, g/d 276 296 344 347 337 Backfat, mm L. dorsi, cm2 Hahn (1994) 可消化賴氨酸％ Lysine Requirement for Late Finishing Pigs 肥育后期豬的賴氨酸需要量 260270280290300310320330340350 5 5 5 5 5 5D i ge s ti b l e l ys i n e , %Gain/Feed Bar r ow sG i l tsBreakpoints: 轉(zhuǎn)折點(diǎn) Barrow = .56% lysine 閹公豬 Gilt = .64% lysine 后備母豬 Hahn, 1994 Lysine Requirement for Late Finishing Pigs 肥育后期豬的賴氨酸需要量 260270280290300310320330340350360 5 5 5 5 5 5D i ge s ti b l e l ys i n e , %Lean gain, g/dBar r ow sG i l tsBreakpoints: 轉(zhuǎn)折點(diǎn) Barrow = . 57% lysine Gilt = .64% lysine Hahn, 1994 Performance and Carcass Composition of Pigs Housed Two per Pen and Fed Two Protein Regimes in Early amp。 Pepsin digestibility Incubate a sample of feed with pepsin and monitor nitrogen release. 胃蛋白酶消化率－將飼料樣品與胃蛋白酶共同培養(yǎng)，檢測氮的釋放
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