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AbstractFull Text

The objective of this study was to evaluate the effect of non-genetic factors on the characteristics of pre-weaning growth in sheep under tropical conditions. The sex of the lamb, the type of birth (single, multiple) and parity number on the birth weight, weaning weight and preweaning daily gain of ...

Author(s)
Cuello Estrada, M. A.; Moreno Torres, J. D.; Aguilar Aguilar, F. A.; Baracaldo Martínez, A.; Atuesta-Bustos, J. E.
Publisher
Universidad Nacional Mayor de San Marcos, Lima, Peru
Citation
Revista de Investigaciones Veterinarias del Perú (RIVEP), 2019, 30, 1, pp 231-239
Abstract

For 484 Polwarth ewes, lambing in 1979-92, gestation length averaged 148.5 days. Of lambs born, 258 were male and 226 female, and 102 lambings resulted in the birth of twins. The birth weight of 492 lambs averaged 2.74 kg and was significantly affected by sex of lamb, litter size, parity and year...

Author(s)
Lanzoni, N. A.; Queiroz, S. A.; Albuquerque, L. G.; Garcia Sobrinho, A.; Andrade, A. F.
Citation
Ars Veterinaria, 1996, 12, 2, pp 178-187
Abstract

For 6601 Pelibuey lambs, birth weight averaged 2.68±0.04 kg and weaning weight 14.4±0.12 kg; for 4727 lambs, preweaning daily gain averaged 103±1.17 g. Weaning weight and daily gain were significantly affected by flock, month of birth, sex of lamb and type of birth (single or twin), and year of...

Author(s)
Ramírez Baffi, A.; Guerra, D.; Garces, N.; González, G.
Citation
Revista Cubana de Reproducción Animal, 1992, 17-18, 1-2, pp 67-76
Abstract

For 65 Morada Nova (MN), 45 Santa Inês (SI) and 58 Brazilian Somali lambs, the time from birth to the 1st sucking averaged 22.2, 48.4 and 28.8 min resp., the difference between the SI lambs and those of the other 2 breeds being significant. Type of birth (single or twin) or sex of lamb had no...

Author(s)
Silva, A. E. D. F.; Nunes, J. F.
Citation
Revista Brasileira de Reprodução Animal, 1985, 9, 2, pp 63-74
Abstract

In a preliminary study, observations were carried out on a herd of 300 crossbred goats. Among all 120 parturitions occurring in the first 2 wk of Nov., the incidence of twinning was 35%, and 88% of kids were ♂. Mortality up to sale at 38 days of age was 7.41%, and was significantly higher in ♂♂...

Author(s)
Barbieri, V.; Nizza, A.; Piccolo, V.
Citation
Atti della Società Italiana delle Scienze Veterinarie, 1983, 37, pp 466-469