Sheep Booroola Merino Biparietal Source: Real-timeUltrasound Imaging for Predicting Ovine Fetal Age: L Sergeev, D.O. Kleemann, et al. -Theriogenology September 1990 VOL. 34NO.3 | mm | day | 16 | 50 | 17 | 52 | 18 | 54 | 19 | 56 | 20 | 58 | 21 | 60 | 22 | 62 | 23 | 64 | 24 | 66 | 25 | 68 | 26 | 70 | 27 | 72 | 28 | 73 | 29 | 75 | 30 | 77 | 31 | 79 | 32 | 81 | 33 | 83 | 34 | 85 | 35 | 87 | 36 | 89 | 37 | 91 | 38 | 93 | 39 | 95 | 40 | 97 | 41 | 99 | 42 | 101 | 43 | 103 | 44 | 105 | 45 | 107 | 46 | 109 | 47 | 111 | 48 | 113 | 49 | 115 | 50 | 117 | 51 | 119 |
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| Sheep Booroola Merino Thoracic Depth Source: Real-timeUltrasound Imaging for Predicting Ovine Fetal Age: L Sergeev, D.O. Kleemann, et al. -Theriogenology September 1990 VOL. 34NO.3 | mm | day | 20 | 50 | 21 | 51 | 22 | 52 | 23 | 53 | 24 | 54 | 25 | 56 | 26 | 57 | 27 | 58 | 28 | 59 | 29 | 60 | 30 | 61 | 31 | 63 | 32 | 64 | 33 | 65 | 34 | 66 | 35 | 67 | 36 | 69 | 37 | 70 | 38 | 71 | 39 | 72 | 40 | 73 | 41 | 75 | 42 | 76 | 43 | 77 | 44 | 78 | 45 | 79 | 46 | 81 | 47 | 82 | 48 | 83 | 49 | 84 | 50 | 85 | 51 | 87 | 52 | 88 | 53 | 89 | 54 | 90 | 55 | 91 | 56 | 93 | 57 | 94 | 58 | 95 | 59 | 96 | 60 | 97 | 61 | 99 | 62 | 100 | 63 | 101 | 64 | 102 | 65 | 103 | 66 | 105 | 67 | 106 | 68 | 107 | 69 | 108 | 70 | 109 | 71 | 111 | 72 | 112 | 73 | 113 | 74 | 114 | 75 | 115 | 76 | 117 | 77 | 118 | 78 | 119 |
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| Sheep Finn Biparietal Source Real Time Ultrasonic Biparietal Diameter of Second Trimester Suffolk & Finn Sheep Fetuses: G.K. Haibel &N.R. Perkins - Theriogenology November 1989 VOL.32NO. 5 pages 863- 869 | mm | days | 8 | 36 | 9 | 38 | 10 | 40 | 11 | 42 | 12 | 44 | 13 | 45 | 14 | 47 | 15 | 49 | 16 | 51 | 17 | 53 | 18 | 55 | 19 | 57 | 20 | 58 | 21 | 60 | 22 | 62 | 23 | 64 | 24 | 66 | 25 | 68 | 26 | 70 | 27 | 71 | 28 | 73 | 29 | 75 | 30 | 77 | 31 | 79 | 32 | 81 | 33 | 82 | 34 | 84 | 35 | 86 | 36 | 88 | 37 | 90 | 38 | 92 | 39 | 94 | 40 | 95 | 41 | 97 |
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| Sheep – Suffolk Biparietal Source: Real TimeUltrasonic BiparietalDiameter of Second Trimester Suffolk & Finn Sheep Fetuses: G.K. Haibel&N.R. PerkinsTheriogenology November 1989 VOL.32NO. 5 pages 863-869 | mm | days | 10 | 41 | 11 | 42 | 12 | 44 | 13 | 46 | 14 | 48 | 15 | 50 | 16 | 51 | 17 | 53 | 18 | 55 | 19 | 57 | 20 | 59 | 21 | 61 | 22 | 62 | 23 | 64 | 24 | 66 | 25 | 68 | 26 | 70 | 27 | 71 | 28 | 73 | 29 | 75 | 30 | 77 | 31 | 79 | 32 | 80 | 33 | 82 | 34 | 84 | 35 | 86 | 36 | 88 | 37 | 89 | 38 | 91 | 39 | 93 | 40 | 95 | 41 | 97 | 42 | 99 | 43 | 100 |
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| Sheep - Hair Crown Rump Length | mm | days | 12 | 29 | 14 | 30 | 20 | 31 | 23 | 32 | 24 | 33 | 30 | 34 | 34 | 35 | 38 | 36 | 41 | 37 | 44 | 38 | 49 | 39 | 52 | 40 | 54 | 41 | 60 | 42 | 63 | 43 | 64 | 44 | 71 | 45 |
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