Effect of production system (organic vs. conventional) and roughage supplementation in diet on performance of growing-finishing Krškopolje pigs
Performance of Krškopolje pigs in conventional and organic production system was investigated in project TREASURE. Thirty-six castrates were assigned (at app. 70 kg) to 3 treatment groups (TG): organic (ECO), conventional (CON) and conventional with lucerne supplementation (CON+L). CON (n=12) and CO...
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Veröffentlicht in: | Archivos de zootecnia 2018 (1), p.27-29 |
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Zusammenfassung: | Performance of Krškopolje pigs in conventional and organic production system was investigated in project TREASURE. Thirty-six castrates were assigned (at app. 70 kg) to 3 treatment groups (TG): organic (ECO), conventional (CON) and conventional with lucerne supplementation (CON+L). CON (n=12) and CON+L (n=12) were housed indoors, while ECO (n=12) pigs were housed in a pen with an outdoor access. Two barley based diets were composed; organic for ECO (12.4 MJ ME, 12.9% CP, 0.7% Lys) and conventional (12.7 MJ ME, 13.6% CP, 1.2 % Lys) for CON and CON+L and distributed in equal quantities (app. 3.4 kg per pig) to CON and ECO whereas CON+L were offered 10% less feed. ECO and CON+L were supplemented with lucerne hay or pellets, respectively. After 73 days on trial, CON+L pigs had 11% lower (P=0.148) average daily gain (ADG) and ECO had 13% higher (P= 0.097) ADG than CON pigs. ECO pigs had less variation in body weight at the end of the trial. Backfat thickness gain was 0.28 vs. 0.32 and 0.36 mm/day for CON+L, CON and ECO, respectively (P=0.083). Feed conversion ratio was comparable in CON and CON+L (4.90 vs. 4.91 kg feed/kg gain).
A performance de suínos Krškopolje produzidos no sistema convencional e orgânico foi estudada no âmbito do projeto TREASURE. Foram utilizados trinta e seis porcos castrados (com peso inicial aproximado de 70kg) distribuídos por 3 grupos de tratamento (TG): orgânico (ECO), convencional (CON) e convencional com suplementação com luzerna (CON+L). Os porcos CON (n=12) e CON+L (n=12) foram alojados em pavilhão fechado enquanto que os porcos ECO (n=12) foram alojados num parque com acesso a uma zona exterior. Foram preparadas duas dietas à base de cevada: orgânica para ECO (12.4 MJ EM, 12.9% PB, 0.7% Lisina) e convencional (13.2 MJ EM, 13.6% PB, 1.2 % Lisina) para os grupos CON e COM+L e distribuídas em quantidades iguais (cerca de 3,4kg por porco) para os grupos CON e ECO enquanto os animais do grupo COM+L receberam 10% menos de alimento. Os grupos ECO e CON+L foram suplementados com feno de luzerna e luzerna em pellets, respetivamente. Após 73 dias em ensaio os porcos do grupo CON+L apresentaram um ganho médio diário inferior (11%, P=0,148) aos porcos COM enquanto que os porcos do grupo ECO apresentaram um ganho médio diário 13% (P=0,097) superior aos porcos do grupo CON. Os porcos do grupo ECO apresentaram uma menor variação de peso corporal no final do ensaio. O ganho de espessura da gordura subcutânea dorsal foi de 0,28 vs 0,32 e 0,36mm/ |
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ISSN: | 0004-0592 |
DOI: | 10.21071/az.v67iSupplement.3199 |