Some factors that influence the birth weight of the Santa Inés breed lambs in the state of Sergipe

Authors

  • Alba Kyonara Barbosa Universidade Federal de Pelotas, Brazil
  • Alves Tenorio Fireman Universidade Federal de Pelotas, Brazil
  • Frank Siewerdt Cobb-Vantress, Inc.

Keywords:

sheep, birth weigth, Santa Ines breed

Abstract

Birth weigths (BrW) of lambs collected from 1983 to 1989 by the Centro Nacional de Pesquisa de Coco (CNPCO), Arcaju, SE, at the Queimadas Experimental Farm in the municipality of Frei Paulo, included 720 total animals (174 males and 183 females born singally, and 193 males and 170 females born as twins). The data were analyzed by means of a linear model fitted by least squares procedures. Overall mean BrW was 3.69±0.02 kg. Sex of offspring, type of birth, and year of birth were not significant source of variation. Month of birth did affect BrW, lambs born in March, April, May and June weighing 2.81±.07, 3.37±.07, 3.89±.05, and 4.70±.07 kg, respectively. Weigth of ewe al lambing had a quadratic effect on BrW, the heaviest being born of ewes weighing 33.67 kg.

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Author Biography

  • Frank Siewerdt, Cobb-Vantress, Inc.

    Educacion: Ph.D., Mejoramiento Genetico Animal y Estadistica (North Carolina State University, EE.UU. 1998); M.Sc., Mejoramiento Genetico Animal (Universidad Federal de Pelotas, Brasil, 1991); Ing. Agr. (Universidad Federal de Pelotas, Brasil, 1987). Experiencia Profisional: Program Geneticist (Cobb-Vantress, Inc., USA, 2011-presente); Professor (University of Maryland, USA, 2005-2011); Oficial de Produccion Animal (FAO de las Naciones Unidas, Roma, Italia, 2004-2005); Geneticista (Perdue Farms, Inc., USA, 2000-2004); Profesor Asociado (Universidad Federal de Pelotas, Brasil, 1991-2000)

References

NA

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Published

1996-06-30

Issue

Vol. 4 No. 1 (1996)

Section

Original paper

Categories

How to Cite

“Some Factors That Influence the Birth Weight of the Santa Inés Breed Lambs in the State of Sergipe”. 1996. Latin American Archives of Animal Production 4 (1): 45-54. https://revista.alpaenlinea.org/index.php/alpa/article/view/2934.