ABSTRACT This study determined the metabolizable energy of DDGS for broiler quails (Experiment I) and evaluated the effect of different dietary levels of DDGS on performance, carcass, organ weight, meat quality, and economic viability (Experiment II). In Experiment I, 72 broiler quails were randomly distributed into two treatments (reference or test diets). The experimental period consisted of 5 days of adaptation, followed by 5 days of total excreta collection. Experimental diets consisted of a reference or a test diet containing 800 g/kg reference diet and 200 g/kg DDGS. In experiment II, 432 unsexed broiler quails were randomly distributed into groups fed six levels of DDGS (0, 50, 100, 150, 200, or 250 g/kg). At 43 days of age, birds were slaughtered and evaluated for carcass yield, organ weight, and meat quality. Apparent metabolizable energy values corrected for nitrogen retention of DDGS were 2,488 and 2,466 kcal/kg for males and females, respectively. In the growth phase and the overall period, feed intake increased linearly (p=0.015 and 0.040) and feed conversion ratio worsened (p=0.038 and 0.001) with the inclusion of DDGS in the diet, respectively. A linear increasing (p=0.001) of gizzard weight was observed with increasing dietary DDGS levels, while the economic variables were affect depending on seasonal feedstocks prices. It is concluded that dietary levels up to 250 g/kg DDGS do not affect growth, carcass characteristics, and meat quality of broiler quails. However, the prices of ingredients in the harvest and off-season period should be considered to determine the level of inclusion of DDGS.

Shrimp waste meal (SWM) is a by-product from the processing of shrimp for human consumption. The value of SMW in feeding poultry is not well documented. The objective of this study was to determine the energy value and optimal inclusion level of SWM in the diet of growing chickens. A total of 180 one-day-old broilers were randomly assigned to five treatments with 0, 50, 100, 150 and 200 g/kg of SWM included in their diet. There were six replicates of six birds for each treatment. Dry matter intake (DMI) was not affected by the level of SWM that was fed. Retained dry matter varied from 72.39% in the diet that did not contain SWM to 66.97% in the diet with 200 g/kg of SWM. Nitrogen retention (NR) ranged from 54.70% to 70.10%; N ingested was between 18.71% and 24.03%. Energy intake ranged from 73.57% to 69.33% for the control and the diet with 200 g/kg of SWM, respectively. NR improved with increasing SWM inclusion levels. The apparent metabolizable energy (AME) and corrected apparent energy metabolizable (AMEn) ranged from 2928 to 2527 kcal/kg and 2774 to 2329 kcal/kg, respectively, relative to the control and 200 g/kg SWM diets. The energy consumption, in kcal/kg, of SWM consumed was AME = 2332-6.971 x SWM and AMEn = 21138.128 x SWM. High levels of SWM reduce the dry matter metabolization coefficient and metabolizable energy values in broilers during the growing phase, so it is recommended that up to 100 g/kg should be included, which would provide an AMEn of 1300.2 kcal/kg for free-range chickens in dry matter.

This study was conducted to evaluate the lysine nutritional plans for pigs reared in mixed batches, 63 to 164 days of age. Two hundred and forty animals, with initial body weight of 24.6±1.5 kg, were distributed in a randomized block design with four nutritional plans (A: 1.05-0.88-0.82-0.78-0.78; B: 1.05-0.87-0.80-0.76-0.76; C: 1.05-0.85-0.770.71-0.71 and D: 1.05-0.82-0.75-0.70-0.69 % of digestible lysine, respectively from 63 to 74 days, 75 to 89 days, 90 to 111 days, 112 to 135 days and 136 to 164 days) with six replicates of ten animals each. The nutritional plans with the sequences A and B improved feed conversion of pigs when compared to other nutritional plans. Pigs fed on the nutritional plan D had lower hot carcass weight. The nutritional plan corresponding to sequence C, respectively, for pigs from 63 to 74 days, 63 to 89 days, 63 to 111 days, 63 to 135 days and 63 to 164 days meet the nutritional needs and maximizes the performance and carcass traits of the initial at finishing phase.

Este estudo foi conduzido com o objetivo de avaliar planos nutricionais de lisina para suínos criados em lotes mistos, dos 63 aos 164 dias de idade. Foram utilizados 240 animais, com peso inicial de 24,6±1,5 kg, distribuídos em delineamento de blocos ao acaso com quatro planos nutricionais (A: 1,05-0,88-0,82-0,78-0,78; B: 1,05-0,87-0,800,76-0,76; C: 1,05-0,85-0,77-0,71-0,71 e D: 1,050,82-0,75-0,70-0,69 % de lisina digestível, respectivamente dos 63 aos 74 dias, dos 75 aos 89 dias, dos 90 aos 111 dias, dos 112 aos 135 dias e dos 136 aos 164 dias), com seis repetições e dez animais cada. Os planos contendo as sequências nutricionais de A e B melhoraram a conversão alimentar dos suínos quando comparados aos demais planos nutricionais. Os suínos alimentados com o plano nutricional contendo a sequência D apresentaram menor peso de carcaça quente. O plano nutricional correspondente a sequência C, respectivamente para suínos dos 63 aos 74 dias, dos 63 aos 89 dias, dos 63 aos 111 dias, dos 63 aos 135 dias e dos 63 aos 164 dias atende as necessidades nutricionais e maximiza o desempenho e as características de carcaça da fase inicial a terminação.

An experiment was conduced using two hundred piglets maintained from twenty one to forty nine days of age under sanitary challenge, to know effects of mannan oligosaccharides, organic acids and probiotics about performance, gastrointestinal pH and feces score. An experimental design of randomized blocks with five treatments, ten replicates and four animals by experimental unity was used. The treatments were constituted by diet without additive, diet with mannan oligosaccharides, diet with acidifier and probiotic, diet with combination of mannan oligosaccharides, acidifier and probiotic and diet with antimicrobials. In the period from 21 to 35 days the animals fed the diet without additive presented larger feed intake, while those fed diet with acidifier and probiotic presented smaller weight gain. In the periods from 36 to 49 days and total larger weight gain for piglets with antimicrobials in relation to diet without additive and acidifier and probiotic was observed. Piglets of diet without additives presented worses feed:gain relations in total period. The feces scores and pH values were not influenced by the treatments. Diets supplemented with mannan oligosaccharide or mannan oligosaccharide, acidifier and probiotic propitiated similar performance for pigs from twenty one to forty nine days of age fed diet with antimicrobials.

Foi conduzido experimento utilizando 200 leitões de 21 a 49 dias de idade sob desafio sanitário, objetivando-se investigar os efeitos de dietas com mananoligossacarídeos, ácidos orgânicos e probióticos sobre o desempenho, pH gastrointestinal e escore de fezes. Utilizou-se o delineamento experimental de blocos ao acaso com cinco tratamentos, dez repetições e quatro animais por unidade experimental. Os tratamentos foram constituídos por dietas sem aditivos; com mananoligossacarídeos; com acidificante e probiótico; com mananoligossacarídeos, acidificante e probiótico e com antimicrobianos. De 21 a 35 dias os animais do tratamento sem aditivos apresentaram maior consumo de ração, enquanto aqueles alimentados com acidificante e probiótico apresentaram menor ganho de peso. Nos períodos de 36 a 49 dias e total observou-se maior ganho de peso para dietas com antimicrobiano em relação à dieta sem aditivos e com acidificante e probiótico. Os animais da dieta sem aditivos apresentaram pior conversão alimentar no período total. Os escores de fezes e os valores de pH não foram influenciados pelos tratamentos. Dietas suplementadas com mananoligossacarídeos ou com mananoligossacarídeos, acidificante e probiótico propiciaram desempenho semelhante àquelas com antimicrobianos para leitões de 21 a 49 dias de idade.