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Jeisane2010

Jeisane's presentation Vasse Field Day 15 Sep 2010

Education
1 of 43
Maternal Productivity Project (southern Aust) Jeisane Accioly, Fiona Jones and Michael Laurence (on behalf of a large team)
WA Maternal Productivity Team Brad Seib John Milligan Tex Hann Nola Mercer Ryan Drage Brian McIntyre Peter Jelinek Leonarda Paszkudzka-Baizert Greg Sawyer
Collaborators
Other Researchers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Industry Push
Low Efficiency High Efficiency
[object Object],Key industry issues
[object Object],Key industry issues
Key issue in South ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],Project aims
Key research question … ,[object Object],Hypothesis: Selection for reduced NFI and reduced carcass fatness increase breeding herd efficiency in good, but not in poor nutritional environments * Kg of cow and calf liveweight / MJ energy consumed by the breeding herd
[object Object],[object Object],[object Object],Project approach
Animal Selection ,[object Object],[object Object],[object Object],[object Object],[object Object],Maternal efficiency herds Angus Hereford Research herds
Vasse (WA) Struan (SA)
Intensive measurements and estimation of food intake Research herds 3 calving seasons 4 Lines High Fat Low Fat High NFI Low NFI 2 Nutrition High Low 2 Sites Vasse, WA Struan, SA x x
EBV differences between the lines 0.48 0.42 2.10 2.40 EMA 0.3 -1.2 -1.8 -3.3 DTC 58.6 42.0 81.3 67.7 MCWT 60.6 47.6 83.8 75.9 Wt600 9.0 7.8 10.6 10.8 Milk 25.9 18.9 36.3 31.3 Wt200 4.6 2.9 4.9 3.8 BWt -0.87 0.77 NFI F -0.47 0.65 NFI P -0.6 3.0 -1.5 1.4 Rump P8 -0.4 3.2 -1.4 1.2 Rib fat Low NFI (n=81) High NFI (n=81) Low Fat (n=170) High Fat (n=170) EBV
Heifer management Nutritional treat’s applied 9 week joining Calving 9 week joining Nutritional treat’s applied Calving Weaning Weaning Vasse Struan 9 week joining 9 week joining Sep Oct Nov Dec Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec Jan Feb June July Aug Sep Oct Nov Dec Jan Feb Mar Apr May June July Aug Sep Oct Nov
Energy Supply & Demand: Early Calvers & Late Calvers
Rainfall (mm) 2006: 577 mm 2007: 810 mm 2008: 671 mm 2009: 679 mm 2010: 464.1mm
Nutritional control
[object Object]
Weight of Fat cows
P8 Fat
1 st calvers pre-mating and pregnancy test 86.8 85.1 4.9 367 465 Low Fat 93.4 93.5 6.5 370 473 High Fat Adjusted conception rate* Conception rate* P8 fat (mm)*** Weight (kg) Age (days)* Line
Pre-mating and pregnancy test 2 nd calving Line Nutrition Weight (kg)*** P8 fat (mm)** Conception rate High Fat High 531 8.3 94.9 High Fat Low 488 5.4 88.4 Low Fat High 575 7.6 93.5 Low Fat Low 491 4.2 85.7
Days to calving for heifers *
Days to Calving 2 nd calvers
Messages ,[object Object],[object Object],[object Object],[object Object]
Birth weight
Calf weaning weight from 1 st calvers
Messages (calves) ,[object Object],[object Object]
[object Object]
Weight of NFI cows
P8 Fat – NFI cows
1 st calvers pre-mating and pregnancy test Line Age (days) Weight (kg) P8 fat (mm)*** Conception rate Adjusted conception rate High NFI 493 306 10.4 91.9 91.8 Low NFI 492 315 8.2 91.6 91.6
Pre-mating and pregnancy test 2 nd calving Line Nutrition Weight (kg) P8 fat (mm)*** Conception rate High NFI High 478 11.9 95.1 High NFI Low 441 8.7 96.1 Low NFI High 488 8.8 87.4 Low NFI Low 438 6.1 88.7
Days to calving for heifers
Days to Calving 2 nd calvers
Birth weight
Calf weaning weight from 1 st calvers
Messages ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Main messages ,[object Object],[object Object],[object Object],[object Object]
To be continued …

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Vasse fd sep10

  • 1. Maternal Productivity Project (southern Aust) Jeisane Accioly, Fiona Jones and Michael Laurence (on behalf of a large team)
  • 2. WA Maternal Productivity Team Brad Seib John Milligan Tex Hann Nola Mercer Ryan Drage Brian McIntyre Peter Jelinek Leonarda Paszkudzka-Baizert Greg Sawyer
  • 4.
  • 6. Low Efficiency High Efficiency
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 13.
  • 15. Intensive measurements and estimation of food intake Research herds 3 calving seasons 4 Lines High Fat Low Fat High NFI Low NFI 2 Nutrition High Low 2 Sites Vasse, WA Struan, SA x x
  • 16. EBV differences between the lines 0.48 0.42 2.10 2.40 EMA 0.3 -1.2 -1.8 -3.3 DTC 58.6 42.0 81.3 67.7 MCWT 60.6 47.6 83.8 75.9 Wt600 9.0 7.8 10.6 10.8 Milk 25.9 18.9 36.3 31.3 Wt200 4.6 2.9 4.9 3.8 BWt -0.87 0.77 NFI F -0.47 0.65 NFI P -0.6 3.0 -1.5 1.4 Rump P8 -0.4 3.2 -1.4 1.2 Rib fat Low NFI (n=81) High NFI (n=81) Low Fat (n=170) High Fat (n=170) EBV
  • 17. Heifer management Nutritional treat’s applied 9 week joining Calving 9 week joining Nutritional treat’s applied Calving Weaning Weaning Vasse Struan 9 week joining 9 week joining Sep Oct Nov Dec Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec Jan Feb June July Aug Sep Oct Nov Dec Jan Feb Mar Apr May June July Aug Sep Oct Nov
  • 18. Energy Supply & Demand: Early Calvers & Late Calvers
  • 19. Rainfall (mm) 2006: 577 mm 2007: 810 mm 2008: 671 mm 2009: 679 mm 2010: 464.1mm
  • 21.
  • 24. 1 st calvers pre-mating and pregnancy test 86.8 85.1 4.9 367 465 Low Fat 93.4 93.5 6.5 370 473 High Fat Adjusted conception rate* Conception rate* P8 fat (mm)*** Weight (kg) Age (days)* Line
  • 25. Pre-mating and pregnancy test 2 nd calving Line Nutrition Weight (kg)*** P8 fat (mm)** Conception rate High Fat High 531 8.3 94.9 High Fat Low 488 5.4 88.4 Low Fat High 575 7.6 93.5 Low Fat Low 491 4.2 85.7
  • 26. Days to calving for heifers *
  • 27. Days to Calving 2 nd calvers
  • 28.
  • 30. Calf weaning weight from 1 st calvers
  • 31.
  • 32.
  • 34. P8 Fat – NFI cows
  • 35. 1 st calvers pre-mating and pregnancy test Line Age (days) Weight (kg) P8 fat (mm)*** Conception rate Adjusted conception rate High NFI 493 306 10.4 91.9 91.8 Low NFI 492 315 8.2 91.6 91.6
  • 36. Pre-mating and pregnancy test 2 nd calving Line Nutrition Weight (kg) P8 fat (mm)*** Conception rate High NFI High 478 11.9 95.1 High NFI Low 441 8.7 96.1 Low NFI High 488 8.8 87.4 Low NFI Low 438 6.1 88.7
  • 37. Days to calving for heifers
  • 38. Days to Calving 2 nd calvers
  • 40. Calf weaning weight from 1 st calvers
  • 41.
  • 42.