Semipurified glycerins on starting piglets feeding‏ (15-30 kg)

Abstract

ABSTRACT. The nutritional value and the performance of piglets fed on diets with semipurified glycerin (SPGV) and mixed (SPGM) vegetable oil was determined and evaluated. Thirty-two crossbred piglets, allotted in a completely randomized block design, were used in the digestibility trial. Two types of glycerin (SPGV and SPGM) and three levels of diet (4, 8 and 12%) were studied. The experimental unit consisted of one piglet. Glycerins' metabolizable energy (ME) was estimated by regression of ME (kcal kg -1 ) intake associated with glycerin vs. glycerin intake (kg). ME as-feed-basis rates were 3,373 for SPGV and 2,932 for SPGM, or rather, the glycerins are highly available energy source for piglets. In the performance trial, 90 piglets were allotted in a completely randomized blocks design in a 2 x 4 + 1 factorial scheme, two glycerins, four levels (3, 6, 9 and 12%), five replicates (pens) and two piglets per pen. A control diet with no glycerin (0%) was additionally formulated. Since no effect of glycerin inclusion on pig performance occurred, it was feasible to use up to 12% of both types of glycerin on piglets feeding.Keywords: co-product, energy feedstuff, glycerol. Glicerinas semipurificadas na alimentação de leitões (15-30 kg)RESUMO. Determinou-se o valor nutricional e avaliou-se o desempenho de leitões alimentados com rações contendo glicerinas semipurificadas de origem vegetal (GSPV) e mista (GSPM). Na digestibilidade foram utilizados 32 leitões, machos castrados, distribuídos em delineamento em blocos ao acaso. Foram estudadas duas glicerinas (GSPV e GSPM) e três níveis de inclusão na dieta-teste (4, 8 e 12%). A unidade experimental consistiu de um leitão. A energia metabolizável (EM) das glicerinas foi estimada pela análise de regressão do consumo de EM (kcal kg ), na matéria natural, obtidos foram 3.373 para GSPV e 2.932 para GSPM, indicando que as duas glicerinas são fontes de alta energia disponível para a alimentação de leitões. No desempenho, foram utilizados 90 leitões, distribuídos em blocos ao acaso, em esquema fatorial 2 x 4 + 1, sendo duas glicerinas, quatro níveis de inclusão (3, 6, 9 e 12%), cinco repetições e dois leitões por unidade experimental. Adicionalmente foi formulada uma ração-testemunha sem glicerina (0%). Não houve efeito do nível de inclusão de glicerina sobre o desempenho, sugerindo que é viável a utilização em até 12% de ambas as glicerinas na alimentação de leitões.

Neutral semi-purified glycerin in starting pigs feeding

“…This linear relationship shows that the ME value in glycerin estimated by the slope of the linear relationship between metabolizable energy intake vs. glycerin intake (Figure 1) has similar values to those obtained by Gonçalves et al (2013) in experiments using semi-purified glycerin prepared from fat animal + soybean oil. The authors determined the ME value was 2,931 kcal/kg.…”

“…The analysis results of the physical, energy and chemical composition of the NSPG (Table 1) However, the ash content was higher than reported by the study from Gonçalves et al (2013) that used mixed and vegetable semi-purified glycerin. Lammers et al (2008b) warn that the methanol, sodium chloride or potassium concentration in the glycerin should be monitored to avoid excessive amounts of these compounds in the pig diet.…”

“…Lammers et al (2008a), Gonçalves et al (2013) and Shields et al (2012) does not damage the performance of piglets and and noted that glycerin can be included at up to 10%, 12% and 5%, respectively. Groesbeck et al (2008) indicated that the inclusion of up to 12% crude glycerin in piglet diets contributed to the linear increase of DWG and DFI, but no difference was observed for the feed:gain ratio.…”

“…However, Gonçalves et al (2013) reported a ratio of 0.89 ME:DE for vegetable oil semi-purified glycerin (VSPG) and 0.91 for mixed semi-purified glycerin (MSPG) using starting pigs. The authors highlighted that the VSPG has greater fatty acid content than the MSPG, which provided a higher energy value.…”

Semi purified glycerins in growing and finishing pigs feeding (30-90 kg)

“…One possible reason for these results is that glycerins also act as additives/promoters that enhance the metabolic activities of swine besides being energy source. Other authors such as Carvalho et al (2012) and Gonçalves et al (2013) also obtained results with digestibility coefficients above 100% for pigs at different stages of creation.The slope of the linear relationship between the metabolizable energy intake (kcal/kg) associated with glycerin vs glycerin intake (kg) (Figure 1), showing that the SPGV presented energetic value (2,731kcal/kg of ME)…”