豬營養(yǎng)體系課件-整理

豬營養(yǎng)體系SwineNutritionSystem正大集團飼料技術線FeedTechnologyFunctionLineChinaArea1.2.營養(yǎng)學真意

TheRealityofNutrition

產(chǎn)出=(

遺傳+環(huán)境+營養(yǎng))*管理P=(G+E+N)*M3.豬營養(yǎng)體系

SwineNutritionSystems母豬營養(yǎng)體系SowNutritionSystem乳豬營養(yǎng)體系BabyPigNutritionSystem育肥豬營養(yǎng)體系Grow/finishNutritionSystem4.母豬營養(yǎng)體系

SowNutritionSystem揭示現(xiàn)代母豬妊娠和泌乳的營養(yǎng)需要量

Understandthenutritionalneedsofmodernsowsduringgestationandlactation了解不同胎次營養(yǎng)需求的差異 Understandpotentialparitydifferences評價后續(xù)的繁殖性能 Mustevaluatesubsequentreproductiveperformance5.產(chǎn)仔更多（12.5頭活仔）Largerlittersize(12.5bornalive)高產(chǎn)奶量和仔豬窩增重（2.5-3.5kg/d）Highermilkyieldandgreaterlittergrowthrate(2.5–3.5kg/d)成年體型更大Greatermaturebodysize

體組成改變（脂肪少、瘦肉多）Changeinbodycomposition--lessfat,morelean

食欲降低Reducedappetite現(xiàn)代種母畜與20-30年前相比差別很大：Breedingfemaleoftodayisverydifferentthanhercounterpartof20-30yearsago:

6.合理的初生重

Highbirthweight妊娠目標

Goals–Gestation7.合理的初生重

Highbirthweight懷孕母豬的飼養(yǎng)影響初生重和健康狀況Sowfeedingingestationaffectsbirthwt妊娠目標

Goals–Gestation8.合理的初生重

Highbirthweight懷孕母豬的飼養(yǎng)影響初生重和健康狀況Sowfeedingingestationaffectsbirthwt妊娠目標

Goals–Gestation妊娠目標為第5周母豬妊娠率達到85-90%且體正常Thegoalofaneffectivegestationfeedingprogramistohave85-90%ofthegestatingsowsin“normal’conditionby5weeksofgestation9.體況評分

BodyConditionScore

15432過瘦Thin正常Normal過肥Fat3.控制能量攝入

ControlEnergyIntake飼喂量不足會導致:

UnderFeedingCauses:降低仔豬初生重

Decreaseinpigbirthweight斷奶前死亡 PWM降低泌乳量

Decreasemilkproduction影響繁殖性能

Poorreproductiveperformance14.15.16.控制能量攝入

ControlEnergyIntake過量采食會導致： OverFeedingCauses:

增加不必要花費 Unnecessaryexpense增加死胎率 Increasesembryonicmortality影響乳腺發(fā)育 Reducesmammarydevelopment增加母豬死亡率和淘汰率 Increasesowmortalityandcullingrate減少泌乳期的采食 Reduceslactationfeedintake17.妊娠期Gestation???????????????????????????????????????????18.妊娠期Gestation19.妊娠期Gestation20.妊娠期Gestation21.母豬營養(yǎng)體系

SowNutritionSystem了解不同胎次營養(yǎng)需求的差異

Understandpotentialparitydifferences22.初產(chǎn)母豬繁育目標

BreedingGiltGoals23.初產(chǎn)母豬繁育目標

BreedingGiltGoals體重達到135-150kg Weightatbreeding135–150kg

24.分娩3胎以上產(chǎn)仔總數(shù)與母豬的配種體重的關系Totalbornover3paritiesaccordingtobreedingweightSource:Williamsetal,2005第一次配種體重分娩3胎以上總仔豬數(shù)25.分娩3胎以上產(chǎn)仔總數(shù)與母豬的配種體重的關系Totalbornover3paritiesaccordingtobreedingweightSource:Williamsetal,2005第一次配種體重分娩3胎以上總仔豬數(shù)26.初產(chǎn)母豬繁育目標

BreedingGiltGoals體重達到135-150kg Weightatbreeding135–150kg

第2或第3次發(fā)情記錄 2ndor3rdrecordedestrus

27.初產(chǎn)母豬繁育目標

BreedingGiltGoals體重達到135-150kg Weightatbreeding135–150kg

第2或第3次發(fā)情記錄 2ndor3rdrecordedestrus

12.5頭總產(chǎn)仔數(shù) 12.5totalborn

28.合理的初生重

Highbirthweight懷孕母豬的飼養(yǎng)影響初生重和健康狀況

Sowfeedingingestationaffectsbirthwt好的母豬管理最大限度地發(fā)揮仔豬的生產(chǎn)性能Maximizeperformanceofpigletsonthesow

29.出生重、斷奶前日增重與斷奶體重的關系

（25日齡斷奶）

BirthWeight,PreweaningADG,andWeaningWeight(25d)出生重（公斤）斷奶重（公斤）斷奶前平均日增重（克）30.合理的初生重

Highbirthweight懷孕母豬的飼養(yǎng)影響初生重和健康狀況

Sowfeedingingestationaffectsbirthwt好的母豬管理最大限度地發(fā)揮仔豬的生產(chǎn)性能Maximizeperformanceofpigletsonthesow

初生重的提高可以提高斷奶仔豬的存活率和體重Increasedbirthweightimprovesincratesurvivabilityandweaningweights31.合理的初生重

Highbirthweight懷孕母豬的飼養(yǎng)影響初生重和健康狀況

Sowfeedingingestationaffectsbirthwt揭示現(xiàn)代母豬妊娠和泌乳的營養(yǎng)需要量

Understandthenutritionalneedsofmodernsowsduringgestationandlactation胚胎的生長需要 Growthoffetusandassociatedtissues32.胎兒蛋白沉積

FetalProteinAccretionMcPhersonetal.,200433.合理的初生重

Highbirthweight懷孕母豬的飼養(yǎng)影響初生重和健康狀況

Sowfeedingingestationaffectsbirthwt揭示現(xiàn)代母豬妊娠和泌乳的營養(yǎng)需要量

Understandthenutritionalneedsofmodernsowsduringgestationandlactation胚胎的生長需要 Growthoffetusandassociatedtissues乳腺組織的生長需要

Mammarytissue34.乳腺蛋白沉積

ProteininMammaryGlandJi,2004Protein,g/glandDaysofGestation35.合理的初生重

Highbirthweight懷孕母豬的飼養(yǎng)影響初生重和健康狀況

Sowfeedingingestationaffectsbirthwt揭示現(xiàn)代母豬妊娠和泌乳的營養(yǎng)需要量

Understandthenutritionalneedsofmodernsowsduringgestationandlactation胚胎的生長需要 Growthoffetusandassociatedtissues乳腺組織的生長需要

Mammarytissue頭胎母豬的維持與生長

Maintenanceandgrowthincaseofgilts36.采食量最關鍵

Feedintakeisthekey37.妊娠期飼喂方案

GestationOptionsⅠ.妊娠早期和后期飼喂不同量的同種日糧

Onedietfedadifferentamountsinearlyandlategestation.

38.同種妊娠日糧

OneGestationDiet妊娠早期和中期 EarlyandMidGestation(Day0–85)1.8–2.0kg/d

妊娠后期 LateGestation(Day86–114)2.4–3.0kg/d39.妊娠期飼喂方案

GestationOptionsⅠ.妊娠早期和后期飼喂不同量的同種日糧

Onedietfedadifferentamountsinearlyandlategestation.

Ⅱ.飼喂兩種日糧

Twodifferentdiets

40.要點

REMEMBER

不同胎次采食不同

TherearedifferencesinNUTRITIONALREQUIREMENTbyparity妊娠目標為第5周母豬妊娠率達到85-90%且體況正常 Thegoalofaneffectivegestationfeedingprogramistohave85-90%ofthegestatingsowsin“normal’conditionby5weeksofgestation41.要點

REMEMBER

不同胎次采食不同

TherearedifferencesinNUTRITIONALREQUIREMENTbyparity妊娠目標為第5周母豬妊娠率達到85-90%且體況正常 Thegoalofaneffectivegestationfeedingprogramistohave85-90%ofthegestatingsowsin“normal’conditionby5weeksofgestation采食量最關鍵

Feedintakeisthekey42.43.發(fā)揮乳豬生長潛力

Maximizebabypiggrowthpotential

合理的初生重

Highbirthweight仔豬的生產(chǎn)性能始于母豬的飼養(yǎng)

Pigletperformancestartswithsowfeeding–gestationandlactation好的母豬管理最大限度地發(fā)揮仔豬的生產(chǎn)性能Maximizeperformanceofpigletsonthesow

Whatisbabypiggrowthpotential..??44.斷奶前平均日增重,克/天

ADGbeforeweaningD2體重KgBWtD2日增重g/dADGd2-21g/dD21斷奶重D21weaningwt1.51905.11.52205.71.52506.21.52806.81.53107.445.乳豬生長潛力GrowthPotentialofBabyPigsArtificialrearing–realgeneticgrowthpotential46.哺乳杯

MilkfeedingCups

保溫欄MilkFeedingPen

47.新生仔豬人工飼養(yǎng)的生長潛力

PotentialGrowthRateofNeonatalPigsUsingArtificialRearingCV14%(n=16)Boydetal.,1995AverageGrowthRate,g/dMilkkg/d10.815.318.419.422.226.048.母豬日產(chǎn)奶量與斷奶前乳豬平均日增重的關系

SowDailyMilkProduction&PreweaningDailyGain斷奶前平均日增重（克）母豬日產(chǎn)奶量（公斤/天）Standardized10pigsperlitterWhatisreasonableexpectationformilkproduction..??49.不同母豬哺乳期的性能

DifferencesinPigGrowthRateandMilkProductionEstimatesforProlificSowsPigletADG,g/pig/d

256234248287311Standardized10pigsperlitterWhatarethekeystolactationsuccess..??50.泌乳期——成功的關鍵

Lactation–KeystoSuccess進入分娩房時母豬體重和身體狀態(tài)合適 Propersizeandconditionenteringfarrowinghouse

采食量! FEEDINTAKE!

真正自由采食 “Trueadlibitum”feeding

51.52.53.INTāKFeeder54.飼喂系統(tǒng)對泌乳母豬性能的影響

EffectofsystemoffeedingonperformanceoflactatingsowsPeng,J.J.,S.A.Somes,andD.W.Rozeboom.J.Anim.Sci.2007,85:853-860人工HF自由采食Self-fed母豬數(shù)

No.ofsows5757平均胎次

AverageParity2.702.77采食量

TotalFeedIntake,kg114124日采食量

ADFI,kg5.45.955.泌乳期——成功的關鍵

Lactation–KeystoSuccess進入分娩房時母豬體重和身體狀態(tài)合適 Propersizeandconditionenteringfarrowinghouse

采食量! FEEDINTAKE!

真正自由采食 “Trueadlibitum”feeding

明確營養(yǎng)需要 KnowingNutrientNeeds56.試驗目標

Objectives研究實際生產(chǎn)條件下初產(chǎn)母豬泌乳期賴氨酸需要Toevaluatetheoptimumlysinelevelforlactatinggiltsundercommercialresearchconditions.Lysreq..?57.材料與方法

MaterialsandMethods初產(chǎn)母豬263PIC(Camborough22)

1stparitygilts5種飼料Allocatedto5dietarytreatmentsinCRD

0.95%Lysine1.05%Lysine1.15%Lysine1.25%Lysine1.35%Lysine每個處理50-55頭母豬Eachtreatmenthad50-55sows試驗期16-22天Sowswereontestfor16-22days58.日糧賴氨酸水平對采食量的影響

EffectofdietarylysineintakeonADFITrteffectP=0.23,SEM=0.16Averagefeedintake…59.初產(chǎn)母豬20天泌乳期的平均日采食量

ADFI(g/d)during20dlactationinP1sowsGilts..!!60.初產(chǎn)母豬28天泌乳期的平均日采食量

ProjectedADFI(g/d)during28dlactationinP1sows61.要點

REMEMBER

不同胎次采食不同

Therearedifferencesinfeedintakebyparity第一胎母豬采食會少0.5-2.0kg/d Parity1femalesconsume0.5to2.0kg/dless

62.日糧賴氨酸水平對采食量的影響

EffectofdietarylysineintakeonADFITrteffectP=0.23,SEM=0.16Averagefeedintake…63.日糧賴氨酸對仔豬日增重的影響

EffectoflysintakeonpigletADG(g/d)TrtP<0.02,LinearP<0.01;SEM=7.8464.日糧賴氨酸對仔豬日增重的影響

EffectoflysintakeonpigletADG(g/d)TrtP<0.02,LinearP<0.01;SEM=7.8411.211.311.612.012.3KgMilk/day65.日糧賴氨酸水平對采食量的影響

EffectofdietarylysineintakeonADFITrteffectP=0.23,SEM=0.1666.日糧賴氨酸水平對初產(chǎn)母豬和仔豬的影響

EffectofDietaryLysineonP1SowandLitterPerformance總賴氨酸

TotalLysine,%0.951.05采食量kg/dADFI,kg/d5.425.705.665.415.66賴氨酸射入量Lysineintake,(g/d)53.558.964.365.270.0母豬體重變化SowBWtchange(kg)4.75.5斷奶數(shù)Pigsweaned/litter9.19.2日增重

ADG(g/d)262265273281288斷奶重Pigweaningwt(kg)6.56.7斷奶窩重Litterweaningwt(kg)56.457.758.959.161.6Datarepresents52to54sows/treatment.WhyareweconcernedaboutBWtchange..??67.母豬體重損失對下胎繁殖性能的影響

ImpactofBWLossonSubsequentPerformanceP1-2體重損失PercentBodyWeightLoss指標Criteria

>10%0-10%體重增加GainedWt斷奶至發(fā)情間隔WeanedtoEstrusInterval(d)7.42a5.52b4.66c斷奶后7天配種率Sowsbredbyday7(%)64.5a87.9b92.6b出生仔豬數(shù)TotalBorn11.8a12.83b13.04babcMeanswithinarowwithoutacommonsuperscriptdiffer(P<.05)Summaryof577sows–commercialunit68.日糧賴氨酸水平對初產(chǎn)母豬和仔豬的影響

EffectofDietaryLysineonP1SowandLitterPerformance總賴氨酸

TotalLysine,%0.951.05采食量kg/dADFI,kg/d5.425.705.665.415.66賴氨酸射入量Lysineintake,(g/d)53.558.964.365.270.0母豬體重變化SowBWtchange(kg)4.75.5斷奶數(shù)Pigsweaned/litter9.19.2日增重

ADG(g/d)262265273281288斷奶重Pigweaningwt(kg)6.56.7斷奶窩重Litterweaningwt(kg)56.457.758.959.161.6Datarepresents52to54sows/treatment.Whatis500gramsincreaseinweanwtworth..??69.斷奶重越大斷奶后生長速度越快

0.1kg

atweaning=asavingof

1/2-1

dayatslaughterCanyoutell100gdifferenceinweaningwt..?Canyoutrack1dayearliertoslaughter..?70.斷奶重

71.72.豬營養(yǎng)體系

SwineNutritionSystems母豬營養(yǎng)體系SowNutritionSystem乳豬營養(yǎng)體系BabyPigNutritionSystem73.斷奶后第一周生長狀況對上市日齡的影響

ADGfirstweekpostweaning

斷奶后第一周內平均日增重(g)

ADGfirstweekpostweaningPollmann（1993)74.斷奶后第一周生長狀況對上市日齡的影響

ADGfirstweekpostweaning

斷奶后第一周內平均日增重(g)

ADGfirstweekpostweaningPollmann（1993)75.好的開始

BetterStart–FasterFinish平均而言，斷奶體重每增加1kg可縮短出欄時間4-5天Onaverageeach1kgextragainwithin3weekspostweaningreduceddaystomktby4–5days76.斷奶仔豬的生理缺陷

Physiologicalchallengestoweaningthebabypig小腸結構的完整性

Undevelopedsmallintestine酶系發(fā)育不完善

Enzymeproductionisimmature77.斷奶仔豬乳糖酶

EnzymeDevelopment78.斷奶仔豬的生理缺陷

Physiologicalchallengestoweaningthebabypig小腸結構的完整性

Undevelopedsmallintestine酶系發(fā)育不完善

Enzymeproductionisimmature產(chǎn)酸能力低

Acidproductionisimmature免疫機能不健全

Immunesystemisnotfullydeveloped79.斷奶仔豬免疫力

ImmuneSystemDevelopment80.斷奶初期

StarterProgram挑戰(zhàn) Challenges從母乳到干飼料 Transitionfromsow’smilktodryfeed斷奶早 Weaningage健康/管理

Health/Management環(huán)境,病原,飼料變化等

Environmentalstress,pathogenexposure,abruptchangeindietcompositionandphysicalstate采食量減少導致增重慢

Experiencereducedwtgainsduetoreducedfeedintake81.高檔乳豬料

CriteriaofPremiumBabyPigFeed提高后期生長

Growthperformance飼料采食量好

FeedIntake抗拉稀

Minimizediarrhea減少斷奶應激

Reducestressofweaning82.采食量最關鍵

Feedintakeisthekey83.采食量最關鍵

Feedintakeisthekey

提高后期生長

Growthperformance

Touchetteal.,199784.特殊原料與原料品質

SpecialIngredients&IngredientQuality85.特殊原料與原料品質

SpecialIngredients&IngredientQuality86.?極好的原料

Excellentingredientforbabypigs適口性好 Palatable易消化

Highlydigestible乳糖含量高

Highlactosecontent斷奶仔豬料中乳清粉的使用

DriedWheyinPigStarterDiets87.斷奶仔豬乳糖酶

EnzymeDevelopment88.日采食量ADFILactoseEffect

ADFIg/dQuadraticP<0.05;SEM=13IncreasingLactose,%LowHigh89.日增重ADGLactoseEffect

ADGg/dLinearP<0.01;SEM=13LowHighIncreasingLactose,%90.乳清粉的含量影響1-2周的性能

ADFI,ADG,2wkspostweaningwithorwithoutLactose(g/d)

(克/天)5.3KgWeaningBWt91.乳清粉的含量影響后期3周的性能

ADFI,ADG,wk3postweaningwithorwithoutLactose(g/d)

(克/天)Threediets0,9,18%DriedWheyfirst2weekspostweaning–commondietweek392.高檔乳豬料

Criteriaofpremiumbabypigfeed提高后期生長

Growthperformance飼料采食量好

FeedIntake93.飼料采食量好

FeedIntake

適口性好

Palatability

94.AB適口性8.適口性試驗照片99.仔豬哄搶正大代乳寶正大代乳寶100.高檔乳豬料

Criteriaofpremiumbabypigfeed提高后期生長

Growthperformance飼料采食量好

FeedIntake抗拉稀

Minimizediarrhea101.斷奶仔豬料中乳清粉的使用

DriedWheyinPigStarterDiets102.103.采食量最關鍵

Feedintakeisthekey

抗拉稀

MinimizediarrheaTouchetteal.,1997104.斷奶后飼喂Feedingafterweaning105.斷奶后飼喂

Feedingafterweaning106.高檔乳豬料

Criteriaofpremiumbabypigfeed提高后期生長

Growthperformance飼料采食量好

FeedIntake抗拉稀

Minimizediarrhea減少斷奶應激

Reducestressofweaning107.補飼的意義

WHYCREEPFEED訓練咀嚼固體飼料及適應氣味 Trainpigletstoacceptsolidfeed刺激化道中各淀粉酶和蛋白酶活性

Induceenzymeproduction108.乳豬消化酶分泌及斷奶應激

DigestiveenzymeafterweaningACP010.1-PZ-95020123456淀粉酶Amylase脂肪酶Lipase

胰蛋白酶Trypsin周齡

胰蛋白酶活性1050(x1000)淀粉酶和脂肪酶活性資料來源:Lindemanetal1986Weaning109.每頭乳豬斷奶前總采食量

與斷奶后1周總采食量的關系

Feedintakeofthepigletsduringlactation,inrelationtofeedintakeduringthe7dafterweaning110.斷奶后采食量對胰蛋白酶活力的影響Trypsinactivity(pancreas&jejunum)atd6post-weaningrelatedtopost-weaningFI02468101214161820斷奶后0-6天平均日采食量(g/d)Postweaning6dADFIg/d01208016028024020040320360400TotalTrypsinActivityunitsx1000CarolineA.Makkink,1993,Ph.D.thesisDepartmentofAnimalNutrition,AgriculturalUniversityofWageningen.111.補飼的意義

WHYCREEPFEED訓練咀嚼固體飼料及適應氣味 Trainpigletstoacceptsolidfeed刺激化道中各淀粉酶和蛋白酶活性

Induceenzymeproduction增加產(chǎn)酸能力 Stimulategastricacidproduction112.補飼的意義

WHYCREEPFEED訓練咀嚼固體飼料及適應氣味 Trainpigletstoacceptsolidfeed刺激化道中各淀粉酶和蛋白酶活性

Induceenzymeproduction增加產(chǎn)酸能力 Stimulategastricacidproduction腸壁發(fā)育 Developgut-villi113.

小腸吸收表面積：小腸皺褶：X3倍

絨毛

X10倍

微絨毛

(毛刷邊界)

X25倍=750倍小腸摺皺微絨毛絨毛114.乳豬斷奶前/后小腸結構之差異

ThedifferenceofintestinalstructureofbabypigforPre-weaningandPostweaning

斷奶前

斷奶后Pre-weaningPostweaning115.

斷奶后5天絨毛高度和采食量的關系____________700600500400300200MEANVILLOUSHEIGHT總的采食干物質量(g/天)TotalCreepIntake

0 200 400 600| | | |ooooooooooooooooooooooPluske,J.R.etal.,Dept.OfAnimalScience,UniversityofAlberta1993116.補飼的意義

WHYCREEPFEED訓練咀嚼固體飼料及適應氣味 Trainpigletstoacceptsolidfeed刺激化道中各淀粉酶和蛋白酶活性

Induceenzymeproduction增加產(chǎn)酸能力 Stimulategastricacidproduction腸壁發(fā)育 Developgut-villi減少乳豬斷奶應激 Reduceweaningstress117.采食量最關鍵

Feedintakeisthekey118.教槽遲早對0-9日齡增重的影響

CreepFeedingDurationEffectonPostweaningGain(day0–9)119.教槽遲早對10-21日齡增重的影響

CreepFeedingDurationEffectonPostweaningGain(day10–21)120.好的開始

BetterStart–FasterFinish36克/天*21天=756克36g/d*21d=756g平均而言，斷奶體重每增加1kg可縮短出欄時間4-5天Onaverageeach1kgextragainwithin3weekspostweaningreduceddaystomktby4–5days121.如何補飼

Howtousecreepfeed越早越好，最佳開始時間5-7日齡???

Usecreepfeedearly–startat5-7d顆粒料比粉狀料更適用 Usepelletcreepfeed高檔乳豬料

Highqualitycreepfeed清潔

Goodsanitation/management/biosecurity122.教槽Startcreepfeeding????????????????????????????3-5?????????????????????????2?????123.采食量最關鍵..!!

Feedintakeisthekey總結

Summary

124.保育階段的生長對后期的影響

NurseryADGeffectongrow/finishADGHighLow日增重斷奶后日齡正常保育豬保育生長慢的豬125.

懷孕母豬的飼養(yǎng)影響初生重和健康狀況

Sowfeedingingestationaffectsbirthwt哺乳期及教槽影響斷奶重

Lactationandcreepfeedaffectweaningwt斷奶體重越大，保育生長速度越大

Higherweaningwt–betternurseryperformance保育生長越快，全期生長越快越大

Bettergrowthinnursery–fastergrowthingrow/finish采食越大，生長越快

Higherfeedintake–fastergrowthFEEDINTAKEISKEY保育豬的生長速度-總結Growthperformance-Summary126.斷奶仔豬免疫力

ImmuneSystemDevelopment550S127.斷奶仔豬乳糖酶

EnzymeDevelopment550S551S128.高檔教槽的價值

Thevalueofpremiumnurseryfeed129.保育期料

保育期所需飼料比例%oftotalfeedrequiredtoreachmarketweight130.6-30公斤保育仔豬FeedEquipmentOthersLaborMedicationPig131.

飼料回報

ROF飼料回報

=(增重x豬價)–(料量x料價)ROF=(gainxpigprice)–(feedkgxprice/kg)

132.正大飼料價值比較550S（代乳寶）的性能與價值體現(xiàn)26日齡斷奶每頭豬階段利潤=（仔豬單價—造肉成本）×每頭豬階段增重133.正大飼料價值比較551S（乳豬寶）的性能與價值體現(xiàn)每頭豬階段利潤=（仔豬單價—造肉成本）×每頭豬階段增重134.正大飼料價值比較551（仔豬寶）的性能與價值體現(xiàn)每頭豬階段利潤=（肥豬單價—造肉成本）×每頭豬階段增重135.營養(yǎng)學真意

TheRealityofNutrition

產(chǎn)出=(

遺傳+環(huán)境+營養(yǎng))*管理P=(G+E+N)*M136.137.豬營養(yǎng)體系

SwineNutritionSystems母豬營養(yǎng)體系SowNutritionSystem乳豬營養(yǎng)體系BabyPigNutritionSystem育肥豬營養(yǎng)體系Grow/finishNutritionSystem138.

最佳生長曲線

BestGrowthCurve-BWtFuetal.,2005139.

最佳生長曲線

BestGrowthCurve-ADG140.采食量最關鍵..!!

Feedintakeisthekey141.采食量與采食能力Feedintakeforgutfill142.采食量最關鍵..!!

Feedintakeisthekey自由采食

FullFeed

143.

自由采食…？？？FullFeeding.