The influences of live weight and body condition score of ewe lambs from breeding to lambing on the live weight of their singleton lambs to weaning

被引：12
作者：
Corner-Thomas, R. A. [1 ]
Hickson, R. E. [1 ]
Morris, S. T. [1 ]
Kenyon, P. R. [1 ,2 ]
机构：
[1] Massey Univ, Int Sheep Res Ctr, Inst Vet Anim & Biomed Sci, Palmerston North, New Zealand
[2] Massey Univ, Natl Res Ctr Growth & Dev, Palmerston North 4442, New Zealand
来源：
SMALL RUMINANT RESEARCH | 2014年 / 119卷 / 1-3期
关键词：
Ewe lamb; Reproduction; Lamb growth; Body condition score; BIRTH-WEIGHT; PREGNANCY; SURVIVAL; LIVEWEIGHT; NUTRITION; PERFORMANCE; GESTATION; SYSTEMS;
D O I：
10.1016/j.smallrumres.2014.01.008
中图分类号：
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号：
0905 ;
摘要：
One of the limiting factors to the adoption of breeding 7-month-old ewes is that their lambs are lighter at birth and weaning than lambs born to mature ewes. The present study tested the hypothesis that the live weight and body condition score of 7-month-old ewes at breeding and during pregnancy would influence the live weight of their singleton-born lambs to weaning. Data was collected on one commercial sheep farm from 591 ewes across two years. In 2011 and 2012, during pregnancy the ewes gained 14.6 and 10.1 kg of total live weight, respectively. Multiple regression analysis indicated that live weight of ewes at breeding had a positive effect (P < 0.05, 0.03 +/- 0.02 kg of birth weight per kg of ewe live weight) on lamb birth weight while ewe live weight in late pregnancy had a negative effect (P < 0.05, -0.03 +/- 0.01 kg of birth weight per kg of ewe live weight). Overall the R-square of the model for lamb birth weight was small (R-2 = 0.01) indicating, that live weight of the ewe was not a major contributor to the live weight of lambs at birth. The live weight of ewes in late pregnancy had a positive impact on both the live weight of lambs at approximately 18 days of age and at weaning (P < 0.05, 0.05 +/- 0.02 and 0.08 +/- 0.03 kg of lamb live weight per kg of ewe live weight, respectively) but again the R2 value for the multiple regression was small (0.01). Body condition score of the ewe at breeding and in mid-pregnancy had no effect (P > 0.05) on lamb birth weight. In contrast ewes with body conditions scores of 3.5 and 4.0 or greater in late pregnancy gave birth to lighter lambs (4.9 +/- 0.1 and 4.7 +/- 0.2 kg, respectively) than ewes with body condition scores of 2.5 or less (5.3 +/- 0.1 kg) or 3.0(5.2 +/- 0.1 kg, P < 0.05). There was no effect (P > 0.05) of ewe body condition score on lamb live weight at approximately 18 days of age or at weaning. Therefore, under the conditions of this study ewe live weight and condition score during pregnancy had a minimal effect of lamb live weight from birth to weaning. (C) 2014 Elsevier B.V. All rights reserved.
引用
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页码：16 / 21
页数：6
相关论文
共 28 条
  • [21] The birthweight and survival of Merino lambs can be predicted from the profile of liveweight change of their mothers during pregnancy
    Oldham, C. M.
    Thompson, A. N.
    Ferguson, M. B.
    Gordon, D. J.
    Kearney, G. A.
    Paganoni, B. L.
    [J]. ANIMAL PRODUCTION SCIENCE, 2011, 51 (09) : 776 - 783
  • [22] Paganoni B.L., ANIM PROD S IN PRESS
  • [23] Response of additional ewe lamb liveweight during gestation on birth and weaning weight of offspring and liveweight of the ewe lamb at weaning
    Schreurs, N. M.
    Kenyon, P. R.
    Mulvaney, F. J.
    Morel, P. C. H.
    West, D. M.
    Morris, S. T.
    [J]. ANIMAL PRODUCTION SCIENCE, 2010, 50 (5-6): : 528 - 532
  • [24] Effect of induced body condition score differences on physiological response, productive and reproductive performance of Malpura ewes kept in a hot, semi-arid environment
    Sejian, V.
    Maurya, V. P.
    Naqvi, S. M. K.
    Kumar, D.
    Joshi, A.
    [J]. JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION, 2010, 94 (02) : 154 - 161
  • [25] Thomson B. C., 2004, Proceedings of the New Zealand Grassland Association, V66, P233
  • [26] Serial measurement of uterine blood flow from mid to late gestation in growth restricted pregnancies induced by overnourishing adolescent sheep dams
    Wallace, J. M.
    Milne, J. S.
    Matsuzaki, M.
    Aitken, R. P.
    [J]. PLACENTA, 2008, 29 (08) : 718 - 724
  • [27] Nutrient partitioning during pregnancy: adverse gestational outcome in overnourished adolescent dams
    Wallace, JM
    [J]. PROCEEDINGS OF THE NUTRITION SOCIETY, 2000, 59 (01) : 107 - 117
  • [28] Bioeconomic modelling to identify the relative importance of a range of critical control points for prime lamb production systems in south-west Victoria
    Young, J. M.
    Thompson, A. N.
    Kennedy, A. J.
    [J]. ANIMAL PRODUCTION SCIENCE, 2010, 50 (08) : 748 - 756
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