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Performance evaluation, feces production and digestibility of nutrients in pigs from different genetic groups
Avaliação do desempenho, da produção de fezes e da digestibilidade de nutrientes em suínos de diferentes grupos genéticos

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Author(s): Caio Abércio da Silva | Julian Cristina Borosky | Ana Maria Bridi | Marco Antonio Rocha | Roberta Aabrami Monteiro Silva | Graziela Drociunas Pacheco

Journal: Semina : Ciências Agrárias
ISSN 1676-546X

Volume: 33;
Issue: Suplemento 2;
Start page: 3315;
Date: 2012;
Original page

Keywords: Dejetos | Digestibilidade | Método de coleta parcial.

ABSTRACT
The objective of this experiment was to evaluate the performance, feces production and digestibility of the main ingredients in feed of different pig genotypes. Forty eight pigs (24 barrows and 24 gilts) averaging 50.81 ± 4.63 kg until 81.14 ± 6.55 kg of body weight and 93.63 ± 6.08 days of age were used. Four treatments represented by four lineages were used: 1- commercial pig breeding line, selected for growth and lean meat production; 2- commercial pig breeding line, selected for prolificacy; 3- crossbred animals (Landrace x Large White); 4- non selected genetic line. Two animals were housed per pen and they received isonutrient and isoenergetic and feed and water ad libitum. The experimental design was completely randomized in a 4x2 factorial arrangement (genetic lines, genders). A greater average daily gain was observed to hybrid animals selected for lean meat production compared to animals selected to prolificacy and a greater feed conversion was observed for the hybrid animals for lean meat (P
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