EFFECT OF ORGANIC AND INORGANIC MINERAL SUPPLEMENTATION ON SEMINAL QUALITY OF BOARS EXPOSED TO HEAT STRESS

Authors

  • Daiane Donin Spessatto Universidade Federal do Paraná
  • Nei Moreira Universidade Federal do Paraná

DOI:

https://doi.org/10.5216/cab.v10i4.3944

Keywords:

Swine production

Abstract

Seasonal high temperatures or inadequate nutrition can decrease reproductive efficiency in boars, especially through a reduction in spermatozoal number / ejaculate and percentage of normal spermatozoa. The aim of this study was to evaluate the effect of organic and inorganic trace mineral supplementation on seminal quality in boars exposed to high environmental temperatures. The experiment was conducted in Southern Brazil, west of Parana State. Boars (2 years of age) were divided into three groups to receive: inorganic (GIn, n=4) and organic (GOr, n=4) mineral supplementation and a lactation diet (GCo, n=5). Inorganic and organic diets contained a premix of inorganic and organic trace minerals, respectively, with the same quantity of each trace mineral, based on NRC (NRC, 1998) for boars. The lactation diet was based on NRC for lactating sows and contained a higher level of inorganic trace minerals, protein and metabolic energy. Maximum mean environmental temperatures were higher than the normal thermal comfort temperature for boars (26oC) during the experimental period, and were associated with a reduction in semen quality. Results are expressed as mean ± SEM. The semen volume of Inorganic and Organic diet groups were higher than Lactation group animals (345.7 ± 92.6 mL and 338.4 ± 67.8 mL versus 302.5 ± 81.4 mL, respectively; P=0.02). Boars in the Organic diet group had higher sperm concentration when compared to the Inorganic diet group (233.5 ± 76.7 X 106 sptz/mL versus 181.2 ± 77.3 X 106 sptz/mL, respectively; P=0.006). Percentage of normal spermatozoa, averaged higher in the Organic group than both Inorganic and Lactation groups (93.31 ± 5.20% versus 78.48 ± 12.15% and 82.59 ± 17.27%, respectively; P=0.00021). High temperatures (>34.5 oC) reduced normal spermatozoa number in all groups, but with significant differences only in the Inorganic and Lactation groups (P=0.03). Organic minerals were benefic to seminal quality, reducing some of the heat stress effects in exposed boars.
KEY WORDS: Heat stress, organic minerals, semen, swine.

Downloads

Download data is not yet available.

Downloads

Published

2009-12-17

How to Cite

SPESSATTO, D. D.; MOREIRA, N. EFFECT OF ORGANIC AND INORGANIC MINERAL SUPPLEMENTATION ON SEMINAL QUALITY OF BOARS EXPOSED TO HEAT STRESS. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 10, n. 4, p. 1084–1093, 2009. DOI: 10.5216/cab.v10i4.3944. Disponível em: https://revistas.ufg.br/vet/article/view/3944. Acesso em: 7 jul. 2024.

Issue

Vol. 10 No. 4 (2009)

Section

Animal Production

License

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g. in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).