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Abstract

Birth weight increased with increasing parity number to the 5th in dams in the subhumid zone (SH, 1.89 kg) and to the 6th in dams in the humid zone (H, 1.71 kg) dams. Season did not significantly affect birth weight in either zone. Birth type (single vs. twins) had the greatest influence on birth...

Author(s)
London, J. C.; Weniger, J. H.
Citation
Journal of Animal Breeding and Genetics, 1995, 112, 5-6, pp 431-453
Abstract

For 1112 Polwarth and 380 Corriedale lambs born in Brazil in 1979-87, birth weight averaged 3.54 and 3.79 kg respectively for males and 3.35 and 3.49 kg for females, the differences between the breeds and sexes being significant. Birth weight was significantly affected by year of birth and age of...

Author(s)
Roda, D. S.; Santos, L. E. dos; Cunha, E. A. da
Publisher
Departmento da Producao Animal, Secretaria da Agricultura, Industria e Comercio, Sao Paulo, Brazil
Citation
Boletim de Indústria Animal, 1995, 52, 1, pp 67-70
Abstract

Data were obtained over a 10-yr period for 3 Polish Lowland flocks comprising 10 613 ewes and 14 277 lambs. Lambing rate was 134.5. The number of lambs dying before weaning was 1776. Type of birth of the ewe had no significant effect on preweaning survival of the offspring on 2 farms, but had a...

Author(s)
Lipecka, C.; Szymanowska, A.; Pięta, M.
Citation
Roczniki Nauk Rolniczych. Seria B, Zootechnicza, 1991, 106, 1-2, pp 121-126
Abstract

In a large semifine-wooled mutton-wool flock, mortality to 20 days of age ranged from 63.5% for single-born ram lambs weighing <1.5 kg at birth to 4.3% for single-born ewe lambs weighing 4.1-4.5 kg. The genetic correlation of body weight of the dams at 100 days of pregnancy with birth weight of...

Author(s)
Khamitsaev, R. S.; Kalabaev, Z. M.
Citation
Ovtsevodstvo, 1990, No. 4, pp 33-34
Abstract

1483 birth and 1209 weaning records of Dorper lambs in a commercial flock were used to investigate the effects of environmental factors on birth and weaning weights and on preweaning growth and survival. Preweaning survival was relatively high (0.91) and largely independent of known sources of...

Author(s)
Cloete, S. W. P.; Villiers, T. T. de
Citation
South African Journal of Animal Science, 1987, 17, 3, pp 121-127
Abstract

For 1736 Nellore calves in Brazil, body weight at birth and weaning averaged 29.10±0.31 and 154.0±2.4 kg resp. Herd, sire within herd, sex of calf, the contemporary group effect (based on season and year of calving, and management) and age of dam all had a highly significant effect on birth weight, ...

Author(s)
Cardellino, R. A.; Castro, L. F. S.
Citation
Revista da Sociedade Brasileira de Zootecnia, 1987, 16, 1, pp 14-27
Abstract

Preweaning data on 2856 calves covering a 14-yr period in 3 breed groups of range beef cattle were analysed for birth weight, weaning weight and preweaning av. daily gain. The cattle were Hereford, Beef Synthetic (BS; a closed population with approx. 37% Aberdeen-Angus (AA), 34% Charolais, 21%...

Author(s)
Ahunu, B.; Makarechian, M.
Citation
Canadian Journal of Animal Science, 1986, 66, 2, pp 381-388
Abstract

Data on 3800 Charolais calves were analysed. Birth weight averaged 34.32 kg, and was significantly affected by sex (34.73 kg for ♂♂ vs. 33.92 kg for ♀♀), year, herd, season and age of dam. Body weight at 3 months averaged 96.75 kg, and was significantly affected by all the above factors; it...

Author(s)
Rodríguez, N.; Menéndez, A.; Domínguez, A.
Citation
Revista Cubana de Reproducción Animal, 1985, 11, 1, pp 37-49
Abstract

Data on 1842 German Mutton Merino lambs, born in Chile in 1977-81, were analysed. Body weight at birth averaged 4.36±0.02 kg, weaning weight 22.10±0.10 kg and daily preweaning gain 203.97±1.37 g. Birth weight and preweaning gains were significantly affected by type of birth (single or twin), which...

Author(s)
Readi, C. G. A.
Citation
Avances en Producción Animal, 1984, 9, 1-2, pp 200
Abstract

For 3535 zebu calves in 4 herds in Cuba, birth weight averaged 29.3, 29.8, 31.1 and 29.9 kg, body weight at 3 months of age 78.8, 79.8, 86.0 and 101.8 kg, and body weight at 6 months 119.4, 121.8, 139.9 and 166.1 kg, the effect of herd being significant for all weights except birth weight in herd 1 ...

Author(s)
Rico, C.; Planas, T.; Menchaca, M.
Citation
Cuban Journal of Agricultural Science, 1984, 18, 3, pp 239-251

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