-This experiment was carried out to evaluate the effects of purified cellulose, soybean hulls and citrus pulp in the diet of weaned piglets. A total of 72 piglets (36 castrated males and 36 females) weaned at 21 days of age (BW 6.45±0.66 kg) was distributed according to a randomized block design, for evaluation of performance, transit time, diarrhea incidence and blood parameters of piglets which received diets containing different sources of fiber. The experimental diets were: control diet -diet composed of corn, soybean meal and a source of lactose; control + 1.5% purified cellulose; control + 3% soybean hull and control + 9% citrus pulp. The inclusion of purified cellulose, soybean hulls and citrus pulp in diets of weaned piglets did not affect the performance or transit time of diets in the gastrointestinal tract. However, the use of purified cellulose reduced incidence of diarrhea. The use of purified cellulose, soybean hull and citrus pulp in the diet of weaned piglets does not affect performance or gastrointestinal transit time. The addition of purified cellulose promotes a beneficial effect to control the diarrhea in weaned piglets.

ABSTRACT

The aim of this work was to study the effect of inclusion of citrus pulp in the diet

An assay with 36 swine initially weighting 83.7±5.1kg body weight (BW) was carried out to evaluate the effects of the use of different dietary citrus pulp levels, 0, 10%, 20%, and 30%, upon digestive organs weights, carcass characteristics, and meat quality of animals subjected to qualitative feed restriction program, and slaughtered at 130kg BW. Linear response (P<0.05) on the weight of stomach, colon, and liver were observed. Negative linear responses (P<0.05) on final BW and carcass yield relative to citrus pulp addition to the diet were observed. Although a negative linear effect (P<0.05) of increasing dietary levels of citrus pulp had been observed on ham weight, yield of this by product was not affected (P>0.05). Higher levels of citrus pulp neither decreased backfat thickness nor increased amount of lean meat, indicative that qualitative feed restriction was not efficient. Positive linear effect (P<0.05) on pH measured 24 hours after slaughter and negative linear effect (P<0.05) on color characteristics as function of citrus pulp dietary levels were verified. Citrus pulp addition in qualitative feed restriction program may not be effective. As no deleterious effects upon meat qualities were observed, citrus pulp can be used as an alternative feedstuff for finishing swine.

RESUMO -Objetivou-se neste trabalho analisar os efeitos do uso de hidrolisado protéico do conteúdo celular de levedura (HPCCL), da proteína isolada de soja (PIS), do hidrolisado protéico de mucosa intestinal de suínos (HPMIS) e do leite em pó integral em substituição parcial ao farelo de soja sobre a morfologia do intestino delgado e o desenvolvimento pancreático de leitões aos 7 e 14 dias pós-desmame. Foram utilizados 44 leitões desmamados aos 21 dias de idade, com peso de 5,5 ± 0,6 kg, alimentados desde o desmame com as seguintes dietas isonutritivas: FS -ração à base de milho e farelo de soja; LPI -ração FS + leite em pó integral; LPI+HPMIS -ração LPI mais HPMIS; LPI+PIS -ração LPI mais PIS; LPI+HPCCL -ração LPI mais HPCCL. Os tratamentos não influenciaram a morfologia intestinal dos leitões, evidenciando que nenhuma das fontes protéicas utilizadas foi capaz de minimizar os efeitos deletérios da mudança da alimentação sobre a vilosidade intestinal. Os animais alimentados com LPI+PIS e LPI+HPMIS apresentaram, aos sete dias pós-desmame, o maior desenvolvimento pancreático. Concluiu-se, portanto, que todas as fontes protéicas estudadas foram igualmente adequadas para a formulação de dietas de desmame.Palavras-chave: epitélio intestinal, leite em pó, leitões, proteína hidrolisada Effects of Feeding Protein Sources on Morphology and Pancreas Development for Weaned PigletsABSTRACT -This trial was carried out to evaluate the effects of replacing soybean meal with hydrolyzed protein of the cellular content of yeast (HPCCY), isolated protein of soy (IPS), hydrolyzed protein of intestinal mucosa membrane of swine (HPIMS) and dried whole milk on intestinal mucosa membrane morphology and pancreas development of weaned pigs at 7 and 14 days post weaning. Fourty-four piglets (averaging 5.5 ± 0.6 kg) were fed the following isonutritive diets: SM -yellow corn-soybean meal based diet; DWM -SM plus dried whole milk; DWM+HPIMS -DWM plus HPIMS; DWM+IPS -DWM plus IPS; DWM+HPCCY -DWM plus HPCCY. The treatments did not influence the pig intestinal structure, showing that none of the protein sources minimized the harmful effects of feeding change on the intestinal epithelium. DWM+HPIMS and DWM+IPS provided the greatest pancreatic weight at 7 days post weaning. It was concluded that all studied protein sources were adequate to formulate diets for weaned piglets.