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This study investigated the effects of adding different adsorbent substances to broilers feed naturally contaminated by mycotoxins. Two hundred and eighty male 1-day-old chicks, Cobb Slow® lineage, were distributed in a randomized block design with 4 treatments, 5 repetitions with 14 birds each. The treatments consisted of: T1- basal feed naturally contaminated with mycotoxins. T2- basal feed + Bentonite, Thistle Extract, Yeast Extract, Vitamin E and Choline. T3- basal feed + Bentonite, Thistle Extract, yeast cell wall and Silymarin. T4- basal feed + Bentonite and Algae extract. Performance (weight gain, feed intake, feed conversion) at 7, 14, 21, 28 days were evaluated. At 28 days, a portion of the jejunum was collected in two birds by replicate to study the intestinal morphology. The relative weight of the gizzard, proventricle and total intestine was evaluated. The data obtained were analyzed using the statistical program SAS (9.3). With the use of any adsorbents studied, the performance and liver weight were improved in all evaluated periods. Thus, the inclusion of adsorbents improves the performance of the broiler chickens when the feed is contaminated by mycotoxins.

The objective of this study is to determine the impact of the load of the nursery ponds (density) on the growth of the rainbow trout fry (Oncorhynchus mikiss), this study was conducted at the fish farming station of Ras Al Ma Ifrane, Morocco. The results obtained for the densities D1 (7.48 Kg / m3), D2 (9.31 Kg / m3) and D3 (11.21 Kg / m3) during this nursery phase which lasted 30 days, the results indicate that the zootechnical parameters evaluated vary according to the density of the fry in different nursery ponds. In average, the final weight of the fry for D1 is 12.73g, for D2, the final average weight is 11.39g against only 9.56g for ponds with density D3. As such, the growth in size of the fry evolves in the same way as the growth in weight.

Animal husbandry is increasingly under pressure to meet world food demand. Thus, strategies are sought to ensure this productivity increment. The objective of this review was to gather advances in the use of bacterial probiotics in animal production. Lactobacilli correspond to the most used bacterial group, with several beneficial effects already reported and described, as well as the Enterococcus and Pediococcus genera – being the latter expressively used in aquaculture. Research on the Bifidobacterium genus is mostly focused on human health, which demonstrates great effects on blood biochemical parameters. Such results sustain the possibility of expanding its use in veterinary medicine. Other groups commonly assessed for human medicine but with prospective expansion to animal health are the genera Leuconostoc and Streptococcus, which have been demonstrating interesting effects on the prevention of viral diseases, and in dentistry, respectively. Although bacteria from the genera Bacillus and Lactococcus also have great potential for use in animal production, a complete characterization of the candidate strain must be previously made, due to the existence of pathogenic and/or spoilage variants. It is noteworthy that a growing number of studies have investigated the genus Propionibacterium, but still in very early stages. However, the hitherto excellent results endorse its application. In this way, in addition to the fact that bacterial probiotics represent a promising approach to promote productivity increase in animal production, the application of other strains than the traditionally employed genera may allow the exploitation of novel mechanisms and enlighten unexplored possibilities.

Pigs have difficulty in performing heat exchange and; therefore, it is important to consider the environmental factors that impact their productive performance. This study evaluated the effect of thermal comfort and photoperiod on the productive performance of sows during pregnancy and of nursery piglets. Zootechnical data were obtained from a commercial farm. The temperature-humidity index (THI) was used as the parameter to determine comfort or thermal stress of the sow. The parameters of the sows during pregnancy and nursery piglets were analyzed considering the criteria of comfort, stress, and four photoperiods. The correlation between photoperiod and THI was high and positive, which demonstrated the associated effect of these variables. More significant effects were observed under conditions of comfort and shorter photoperiods. In conclusion, thermal comfort and photoperiod influenced the parameters evaluated during pregnancy and in the nursery, and the strong association between THI and photoperiod suggested that environmental control favors productive parameters in commercial farms. RESUMO: Os suínos são animais que apresentam dificuldade em realizar trocas de calor, por esse motivo é importante considerar os fatores ambientais que impactam seu desempenho produtivo. O objetivo do presente trabalho foi avaliar o efeito do conforto térmico e do fotoperíodo, sobre o desempenho produtivo das porcas na gestação e leitões na maternidade. Os dados zootécnicos foram obtidos de uma granja comercial. O índice de temperatura e umidade (ITU) foi utilizado como parâmetro para o conforto ou o estresse térmico da matriz. Foram analisados os parâmetros das fêmeas no período gestacional e dos leitões na maternidade, considerando os critérios de conforto, estresse e quatro faixas de fotoperíodos. A correlação entre o fotoperíodo e ITU foi alta e positiva, demonstrando efeito associado dessas variáveis. Foram observados mais efeitos significativos em situações de conforto e faixas de menor fotoperíodo. Em conclusão, o conforto térmico e o fotoperíodo influenciaram os parâmetros avaliados na gestação e na maternidade e a alta associação ITU e fotoperíodo sugere que o controle ambiental pode favorecer parâmetros produtivos em granjas comerciais.

Ivory Coast is strongly depends on fish imports, of which tilapia ( Oreochromis niloticus ) makes up a significant amount, due to its low level of aquaculture production. Optimizing aquaculture in Ivory Coast through the use of probiotics in feed could help to improve aquaculture. The aim of this study was to assess the growth performance of the Nile tilapia fish nourished with feed enriched by Pediococcus acidilactici LB 137 and Pediococcus pentosaceus LB 195 isolated from the gut of Tilapia ( Oreochromis niloticus ), strains as potential probiotics during 3 stages of rearing (Larval, Pre-growth and growth stages). The fish feed enriched with Pediococcus acidilactici LB 137 and Pediococcus pentosaceus LB 195 strains in single and mixed were used against control (whitout adding mentioned microbes). During rearing, the ponds water parameters and zootechnical parameters have been measured every week. The results indicated that, for tropical fish farming, the recorded water parameter values fell within the normal range of recommended values (pH: 6 to 9 dissolved oxygen ≥ 3 mg/L, temperature ≥ 25 °C, and salinity ˂ 30 g/L). Data on tilapia growth performance showed that the commercial by Pediococcus acidilactici LB 137 and Pediococcus pentosaceus LB 195 significantly differed in terms of daily weight increase and the protein efficiency rate (PER), feed conversion rate (FCR) metrics, namely for the larval and growth stages. Among all formulations tested, the highest weight gain values were obtained in fishes nourished with feed enriched with Pediococcus acidilactici ON141902 (LB137) strain with 5.22 ± 0.82 g, 54.93 ± 5.5 g, and 177.23 ± 5.5 g at the larval stage, pre-growth stage, and growth stage, respectively. Also, flesh macronutrient contents (fat, protein, carbohydrate) and gross energy were highest in fishes nourished with feed enriched with Pediococcus acidilactici (LB137) than others formulations. Economic analysis showed that feed enriched with Pediococcus acidilactici (LB137) exhibited lowest feed cost/kg (748.2 FCFA) and highest reduction rate of feed fish (13%). Based on protein efficiency rate (PER), feed conversion rate (FCR) metrics, macronutrients contents and, economic values the Pediococcus acidilactici (LB137) strain seemed suitable for probiotic applications in tilapia fish species.

This work aims at exploiting the essential oil (EO) and phenolic compounds (PC) of rosemary (Rosmarinus officinalis) in a formulation containing leaf powder stabilized with chitin (1%, w/w) to improve chicken meat and investigate their effect on qualitatively and quantitatively broiler chickens’ growth performances. To such a purpose, chicks, at 1 day of age, were distributed in pens on ground divided into four batches. The two control batches were fed with conventional feed, but the positive control contained flavomycin (0.5 g/kg) as growth factor. The two treated batches received a conventional feed supplemented with two doses of 20 and 50 g/kg of the developed formulation. Essential oil and phenolic compound contents in powdered leaves were, respectively, 1.20 and 22.86% in ethanolic extract. 1,8-Cineole (46.88%), followed by camphor (19.20%), α-pinene (9.56%), L.α.-terpineol (5.91%) and β-pinene (4.40%) were the main compounds of the used EO. The two batches of treated chicks showed a significant improvement in body weight (281.88 and 283.75 g, respectively), a decrease in feed conversion and a reduction in mortality (8%), when compared to the control batches. In addition, the elaborated formulation induced catalase activity used as an indicator of cellular antioxidant activity modulation.

In recent years, there has been a significant trend to improve poultry zootechnical performances by biological methods to avoid the unwanted chemical growth factor's introduction into breeding process. Medicinal plants and their derivatives are good candidates to achieve this goal. Thus, this work aimed at evaluating the effect of poultry feed supplementation with the spices Curcuma longa and Zingiber officinale on the zootechnical performance, serological, and microbiological parameters of Ross 308 chicken. To achieve this purpose, 180 chicks divided into five groups and reared for 12 days. The experimental groups consisted of a control group receiving a conventional feed without antibiotics and four groups receiving a conventional feed with 0.5 and 1% turmeric and ginger doses, respectively. Results of the experiment revealed that supplementing the feed with 0.5% turmeric powder increased live weight, and average daily gain and decreased feed conversion compared to the other groups. Turmeric powder supplement (0.5 and 1%) affected blood serum parameters by decreasing triglyceride and aspartate aminotransferase (AST) concentrations. In comparison, the incorporation of 0.5% ginger in the diet decreased triglyceride concentrations, cholesterol, aspartate aminotransferases (ASAT), and alanine aminotransferases (ALAT). Cecum bacteriological analysis showed a total absence of coliforms, Salmonella sp., Clostridium sp., and lactic acid bacteria in the chick groups supplemented with different doses of turmeric and ginger (0.5 and 1%, respectively). Within this study’s limits, using these two studied spices as additives in poultry feed allowed us to conclude that supplementing with 0.5% turmeric powder positively impacted the evaluated parameters.

A feeding trial was conducted to evaluate digestibility and growth of whiteleg shrimp Litopenaeus vannamei in a recirculating aquaculture system (RAS), fed with diets that included the commercial seaweed meals Nutrigreen (NG) and Nutrikelp (NK). The experimental diets were isonitrogenous (300 g kg⁻¹) and isoenergetic (3.3 Mcal kg⁻¹), and were formulated to include 4 and 8 % of the seaweed meal resulting in five experimental diets: NG4 % and NG8 % of the green seaweed and NK4 % and NK8 % of the brown seaweed, and a control diet without seaweed meal. Juvenile L. vannamei (1.42 g) were stocked in 15 60 L clean-water tanks at 70 shrimp m⁻² to evaluate growth. Shrimps of 4.0 and 9.0 g were used for the digestibility trial. Survival in NK8 % (93.3 %) was the highest as compared to the control and the other diets. Apparent digestibility coefficients for dry matter and crude protein were over 80 % in the seaweed meal treatments, and higher (P < 0.05) than in the control diet. However, no significant differences (P > 0.05) were found for final weight, feed conversion ratio, specific growth rate, protein efficiency ratio and individual consumption. This result indicates that an inclusion of 4 and 8 % of brown and green meal in commercial shrimp feed supported adequate growth and survival of juvenile L. vannamei reared in RAS.

Broiler meat is the animal origin protein source with the highest nutritional quality, growth, and projection in the last decade. However, the presence of traces of antimicrobials in the final products, mainly due to the indiscriminate addition of antibiotics (prophylactic use) as growth-promoters antibiotics (GPA) has raised major concerns. In the search for viable alternatives, natural additives such as essential oils appear, among which the oregano (OEO-Lippia origanoides) stands out. It has been used with success at an industrial level and its antimicrobial properties are well known. The current study aimed to evaluate the zootechnical parameters (accumulated weight gain, feed conversion, and feed efficiency) and blood metabolites (Alanine aminotransferase, glucose, cholesterol, triglycerides, creatinine, phosphorous, calcium) in broilers adding OEO into their diet in an in vivo inflammation model achieved by adding Lipopolysaccharides (LPS) from E. coli. 1200 animals were distributed in six diets: D1: basal diet (control) or balanced commercial diet without the addition of GPA, OEO, and LPS; D2: D1+150 ppm GPA (Avilamycin); D3: D1+150 ppm OEO (Lippia Origanoides); D4: D1+1.0 ppm LPS; D5: D1+1.0 ppm LPS+150 ppm GPA; D6: D1+1.0 ppm LPS+150 ppm OEO. The trial was carried out under a randomized block design. OEO-Lippia origanoides improved the zootechnical and metabolic variables (P<0.05) of birds in the face of in vivo inflammation at different ages; furthermore, it improved the animal response and the metabolic conditions of the animals under study. The zootechnical and blood metabolites results at different ages evidenced the technical feasibility of OEO as a nutritional growth promoter.

El cuy (Cavia porcellus) es una especie que tiene importancia social y cultural en la región sur occidental de Colombia. El objetivo de este trabajo fue identificar el comportamiento de variables productivas y reproductivas del cuy en Nariño y Putumayo. Se aplicó una encuesta en 404 sistemas productivos de los municipios de Pasto-Nariño y Colón, San Francisco, Santiago y Sibundoy-Putumayo. Los datos fueron procesados en el programa IBM-SPSS-Statistics[R] V. 20.02011. La distribución de la población de cuyes correspondió a cruces de varias líneas con ascendencia de: Criolla-Perú-Andina 61,4%, Criolla-14,8%, sin identificar 13,4%, Perú 9,65% y Andina 0,74%. La edad a la primera monta (meses) fue menor para Perú (5,1) y Andina (4,5) que en animales criollos (5,3). El número partos/hembra/año en las líneas Perú y Andina fue de 3,7 en hembras criollas fue de 3,4. El 97,3% de los productores han establecido grupos de monta donde la relación macho: hembras, por líneas fue de 1:6, 1:8 y 1:4 para Criolla, Perú y Andina respectivamente. Los pesos promedio (g) al nacimiento, destete y beneficio fueron: 222, 413 y 1330 (Criolla), 197, 390 y 1259 (Perú) y 125, 450 y 1300 (Andina) respectivamente. La edad al destete (días) fue de 24,5 (Criollos), 19,3 (Perú) y 18,3 días (Andina). Se evidenció predominancia en el uso de líneas criollas y/o cruces. Las líneas Perú y Andina reportaron mayor eficiencia reproductiva, la línea criolla presentó una mayor eficiencia productiva. Por el potencial del sistema es acertado realizar una caracterización más amplia. Palabras clave: líneas, Cavia porcellus, parámetros zootécnicos. The guinea pig (Cavia porcellus) is a species of social and cultural importance in the southwestern region of Colombia. However, information on zootechnical variables is under development. The objective of this work was to identify the behavior of lines, productive and reproductive variables of guinea pigs in Nariño and Putumayo. A survey was applied in 404 productive systems of the municipalities of Pasto-Nariño and Colón, San Francisco, Santiago and Sibundoy-Putumayo. The data were processed in the program IBM-SPSS-Statistics[R] V. 20.0-2011. The distribution of lines corresponded to crosses: Criolla-Peru-Andina 61.4%, Criolla-14.8%, unidentified line 13.4%, Peru 9.65% and Andina 0.74%. The age at first mating (months) was lower for the Peruvian (5.1) and Andean (4.5) lines than in Creole animals (5.3). The number of births/ females/years in the Peruvian and Andean lines was 3.7 in Creole females was 3.4. The 97.3% of the producers have established groups of mount where the relation male: females, by lines was of 1:6, 1:8 and 1:4 for Criolla, Peru and Andina respectively. The average weights (g) at birth, weaning and benefit were: 222, 413 and 1330 (Criolla), 197, 390 and 1259 (Peru) and 125, 450 and 1300 (Andina) respectively. The age at weaning (days) was 24.5 (Criollos), 19.3 (Peru) and 18.3 days (Andina). It was evidenced predominance in the use of Creole lines and/or crosses. The Peruvian and Andean lines reported greater reproductive efficiency, the Creole race presented a greater productive efficiency. Due to the potential of the system, it is pertinent to carry out a broader characterization. Keywords: lines, Cavia porcellus, zootechnical parameters. A cobaia (Cavia porcellus) é uma espécie de importância social e cultural na região sudoeste da Colômbia. No entanto, a informação sobre as variáveis zootécnicas está em desenvolvimento. O objetivo deste trabalho foi identificar o comportamento das variáveis do linhas, produtivas e reprodutivas das cobaias em Nariño e Putumayo. Foi aplicado um levantamento em 404 sistemas produtivos dos municípios de Pasto-Nariño e Colón, São Francisco, Santiago e Sibundoy-Putumayo. Os dados foram processados no programa IBM-SPSS-Statistics[R] V. 20.0-2011. A distribuição da população correspondeu a cruzamentos de várias linhagens com ascendência de: Crioulo-Peru-Andina 61,4%, Crioulo-14,8%, biótipo não identificado 13,4%, Peru 9,65% e Andina 0,74%. A idade no primeiro acasalamento (meses) foi menor para os biótipos Peru (5,1) e andinas (4,5) do que em crioulo (5,3). O número de nascimentos/ fêmea/ano nos biótipos peru e andino foi de 3,7 em fêmeas crioulas foi de 3,4. 97,3% dos produtores estabeleceram grupos de acasalamento onde a proporção macha/ fêmea em linhas foi de 1:6, 1:8 e 1:4 para o crioulo, peru e andino respectivamente. Os pesos médios (g) no nascimento, desmame e benefício foram: 222, 413 e 1330 (crioulo), 197, 390 e 1259 (peruano) e 125, 450 e 1300 (andino), respectivamente. A idade de desmame (dias) foi de 24,5 (Crioulo), 19,3 (Perú) e 18,3 dias (Andina). Foi comprovada predominância no uso de linhas e/ou cruzamentos crioulos. As linhas Peru e Andinas relataram maior eficiência reprodutiva, a linha crioula apresentou maior eficiência produtiva. Devido ao potencial do sistema, é aconselhável realizar uma caracterização mais ampla. Palavras-chave: linhas, Cavia porcellus, parâmetros zootécnicos.