EFFECT OF SEASONAL CHANGE ON GOAT SPERMATIC PRODUCTION

Authors

  • Miguel Joaquim Dias UFG
  • Reginaldo Nassar Ferreira UFG
  • Benedito Dias de Oliveira Filho UFG
  • Geysa Fleuri Orsine UFG

Keywords:

Goat, spermatic production, reproduction

Abstract

The trial was conduced at the Goiás Federal University (Goiás, Brazil) from January to December 1989. Four 12 to 18 month-old animals of gray race were kept in fenced area with Brachiaria decumbens pasture. Nutrition was supplemented by protein and energetic concentrate in order to supply nutrition requirement according to NRC. Seasons were determined by variations on minimal temperature, pluvial precipitation and relative humidity. The four seasons were: A (January, February and March), B (April, May and June), C (July, August and September) and D (October, November and December). Semen was collected by eletroejaculation and evaluated for volume, motility, concentration and morphology. Volume values for the four seasons were 0.91, 1.04, 1.07 and 0.96 ml respectively, with no significant difference between seasons (P=0.05). Spermatic concentration showed for seasons A, B, C and D the following values, respectively: 1,201.5, 1,018.2, 1,161.2 and 1,015.5 million/ml, with no significant difference. Motility was 80.25, 63.5, 76.6 and 73.75% for seasons A, B, C and D, being the average percentage 0.5, 0.5, 0.12 and 1.23, respectively. Results showed that the season with higher relative humidity was more harmful to ovine spermatogenesis and under suitable nutrition, seasonal change does not interfere on ovine fertility.

KEY-WORDS: Goat; spermatic production; reproduction.

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Published

2007-12-12

How to Cite

DIAS, M. J.; FERREIRA, R. N.; OLIVEIRA FILHO, B. D. de; ORSINE, G. F. EFFECT OF SEASONAL CHANGE ON GOAT SPERMATIC PRODUCTION. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 25, n. 1, p. 53–62, 2007. Disponível em: https://revistas.ufg.br/pat/article/view/2735. Acesso em: 23 nov. 2024.

Issue

v. 25, n. 1, Jan./Jun. 1995

Section

Research Article

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