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ogy 生理發(fā)育 Management 管理 Junior: 4 to 10 Weeks 育成前期: 4 10周齡 Continued growth of skeleton 骨架繼續(xù)發(fā)育 Muscles, Tendons amp。 Ligaments 肌肉,肌腱,韌帶發(fā)育 Continued Testes ―development‖ 性器官繼續(xù)生長 Feeding 飼喂管理 Grading at 4 weeks 4周齡分群 Skeletal growth 骨架發(fā)育 Redraw bodyweight profiles 體重曲線修正 Fast, Uniform Feed Distribution critical 快速、均勻分配飼料 CV 12 = 2 Way, otherwise 3 Way 變異系數(shù) 12=分成 2欄,否則分成 3欄 Key time to influence Skeletal Uniformity 影響骨架均勻度的關鍵階段 After Grading aim to be back on Standard by 9 12 weeks 分欄后 目標是在 912周齡時回復到標準 1st Grade 第一次分群 21 28 day grading is the most important 2128日齡分群最重要 Grading Periods 分群時間 3 – 4 weeks(周) 6 – 7 weeks(周) 1011 weeks(周) Top Performance 最好的生產水平 父母代產蛋期產蛋率、孵化率和蛋重曲線 P r o d u c t i o n R a t e 、 H a t c h a b i l i t y a n d E g g W e i g h t C h a r t010203040506070809010025 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66周齡 W e e k A g e產蛋率 Production Rate 孵化率 Hatchability (%)0 . 0 01 0 . 0 02 0 . 0 03 0 . 0 04 0 . 0 05 0 . 0 06 0 . 0 07 0 . 0 08 0 . 0 09 0 . 0 01 0 0 . 0 0蛋重(克) Egg Weight(g)產蛋率標準 P R O D U C T I O N S T D . 孵化率標準 S T A ND A R D H A T C H A B I LI T Y實際孵化率 A C T U A L H A T C H A B I LI T Y 實際產蛋率 A C T U A L P R O D U C T I O N蛋重標準 E GG W GT . S T D . 實際蛋重 A C T U A L E GG W GT .Top Performer – Grading Technique 最好的生產者 分欄技術 ? 1st grade occurs during beak trimming of M amp。 F. This grade is just by feel when the beak trimmers are operating. They take the small birds out 斷喙時進行首次分欄(公 /母),斷喙人員僅憑手感挑出弱小雞只 ? 2ND is a full grade at 2 weeks (not Aviagen remendation) 第二次是在 2周齡進行全群分欄(非安偉捷建議) ? At least 2 more full grades before 12 weeks. None after 12 to 14 weeks 12周齡前至少還進行 2次全群分欄, 1214周后不再分欄 ? During a full grade the birds are split into 5 weight bands (target is to have approx 70 Gms weight difference between pens amp。 usually no more than 6 Gms difference in feed per bird per day between the largest and smallest birds) 全群分欄時分成 5個欄,每欄體重差異不超過 70克,最大最小欄間 的料量差異在 6克之內 ? Target is to achieve 80% uniformity for the house and each pen 目標是整舍雞群及各欄雞群的均勻度都達到 80%以上 ? 5 pens of 1200 F 5個欄,每個欄 1200只母雞 ? 10% of each pen is weighed and graphed before a full grade 全群分欄前每欄應稱重 10%的雞數(shù)并繪好曲線圖 Post Grading Weight Technique