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Made available in DSpace on 2018-11-26T15:31:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-07-01 Swine Innovation Porc (Canada) Aliments Breton (Canada) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The feeding behavior of growing-finishing pigs reared under precision feeding strategies was studied in 35 barrows and 35 females (average initial BW of 30.4 +/- 2.2 kg) over 84 d. Five different feeding programs were evaluated, namely a conventional 3-phase program in which pigs were fed with a constant blend of diet A (high nutrient density) and diet B (low nutrient density) and 4 daily phase-feeding programs in which pigs were fed daily with a blend meeting 110, 100, 90, or 80% of the individual Lys requirements. Electronic feeder systems automatically recorded the visits to the feeder, the time of the meals, and the amount of feed consumed per meal. The trial lasted 84 d and the database contained 59,701 feeder visits. The recorded database was used to calculate the number of meals per day, feeding time per meal (min), intervals between meals (min), feed intake per meal (g), and feed consumption rate (feed intake divided by feeding time per meal, expressed in g/min) of each animal. The feeding pattern was predominantly diurnal (73% of the feeder visits). Number of meals, duration of meals, time between meals, feed consumed per meal, and feed consumption rate were not affected by the feeding programs. The females ingested 19% less feed per meal and had a 6% lower feed consumption rate in comparison with the barrows (P < 0.05). Pig feeding behavior was not correlated with diet composition. However, feed efficiency was negatively correlated with amount of feed consumed per meal (r = -0.38, P < 0.05) and feed consumption rate (r = -0.44, P < 0.05). Feed consumption rate was also negatively correlated with protein efficiency (r = -0.44, P < 0.05). Multivariate analysis indicated that feed consumption rate and number of meals per day are the variables related most closely to pig production performance results. Current results indicate that using precision feeding as an approach to reduce Lys intake does not interfere with the feeding behavior of growing-finishing pigs. Univ Fed Rio Grande do Sul, Fac Agron, BR-91540000 Porto Alegre, RS, Brazil Agr & Agri Food Canada, Dairy & Swine Res & Dev Ctr, Sherbrooke, PQ J1M 0C8, Canada Univ Estadual Paulista, Fac Ciencias Agr & Vet, BR-14884900 Jaboticabal, SP, Brazil Ctr Dev Porc Quebec, Ste Foy, PQ G1V 4M7, Canada Univ Estadual Paulista, Fac Ciencias Agr & Vet, BR-14884900 Jaboticabal, SP, Brazil FAPESP: 2012/03781-0

Um experimento foi realizado para avaliar o desempenho, a morfologia vulvar e os pesos de órgãos viscerais e de trato reprodutivo em leitoas pré-púberes alimentadas com dietas contendo aflatoxinas ou zearalenona durante 28 dias. Foram utilizados 18 animais com peso médio inicial de 11 quilogramas. Três tratamentos (dieta controle - DC; DC + 1 mg kg-1 de aflatoxinas; DC + 2 mg kg-1 de zearalenona) foram utilizados em um delineamento inteiramente casualizado com seis repetições. As aflatoxinas reduziram (p0,05) o consumo de ração (DC x DC + zearalenona: 1,087 x 0,986 kg), a conversão alimentar (1,85 x 1,86), o ganho de peso (0,608 x 0,539 kg) e o peso vivo dos animais (27,4 x 25,5 kg) em relação ao grupo controle. Os pesos relativos de fígado e coração também não foram alterados (p>0,05) pelas micotoxinas. Porém, a zearalenona aumentou (p

Foi realizado um experimento para avaliar o desempenho de leitões em creche alimentados com dietas contendo ou não extratos cítricos. Foram utilizados 32 leitões, meio-irmãos paternos, com peso vivo médio inicial de 6,2 kg (± 0,87), durante 42 dias. O delineamento experimental foi o de blocos ao acaso, com dois tratamentos: dieta controle (DC) e DC + 750 mg kg-1 de um composto contendo extratos cítricos (ácido ascórbico + bioflavonóides), com oito repetições e dois animais por unidade experimental. O peso vivo final foi 4% superior (p0,05) pela adição de extratos cítricos na dieta. A adição de extratos cítricos contendo bioflavonóides e ácido ascórbico nas dietas pode melhorar o desempenho zootécnico de leitões pelo aumento na ingestão voluntária de alimento. An experiment was carried out to evaluate the post-weaning performance of piglets fed during 42 days diets with or without citric extracts. Thirty-two weanling piglets were used, with initial average live weight of 6.2 kg (± 0.87), during one period of 42 days. A complete randomized block design was utilized, with two treatments: control diet CD, and CD + 750 mg kg-1 of citric extracts (ascorbic acid + bioflavonoids), with eight replicates and two animals per experimental unit. Final live weight was 4% higher (p0.05) by the citric extracts. Addition of citric extracts containing bioflavonoids and ascorbic acid in diets can improve piglet post-weaning performance by increasing voluntary feed intake.

Um experimento foi realizado com o objetivo de avaliar o desempenho de leitões alimentados com dietas contendo soro de leite fermentado mais Zn e Cu complexados a aminoácidos. Foram utilizados 64 leitões, meio-irmãos paternos em um delineamento de blocos ao acaso com dois tratamentos. Um tratamento consistiu de uma dieta controle (DC) com ZnO e CuSO4 e o outro foi a DC sem CuSO4 e com adição de soro de leite fermentado mais Zn e Cu complexados a aminoácidos (SLF Lact+ZnCuAA). Cada tratamento teve oito repetições e quatro animais por unidade experimental. A presença de SLF Lact+ZnCuAA na dieta de leitões não alterou (p>0,05) o peso vivo dos leitões no experimento. No entanto, o peso vivo diferiu (p0.05) final live weight of the piglets. However, live weight was different (p