Yordan Martínez

• PhD. in Veterinary Sciences
• IRTA Institute of Agrifood Research and Technology

A total of 640 one-day-old Cobb 500 MV × Cobb 500 FF mixed broilers were randomly assigned to one of four experimental treatments with four replicates per treatment and 40 birds per replicate for 32 days. The treatments consisted of a basal diet (control group), basal diet + 0.02% zinc bacitracin (AGP group), basal diet + 0.2% G. lucidum powder (GL...

Introduction The study aimed to investigate the effects of Chlorella vulgaris and lysozyme on growth performance, diarrhea rate, immune function, plasma biochemical parameters, and gut microbiota and metabolites of weaned piglets. Methods Thirty weaned Xiangcun black piglets (BW, 11.47 ± 1.13 kg) were randomly assigned to one of three treatment gr...

Based on the review of scientific literature and previous studies conducted by our team, we have identified other less studied natural products rich in secondary metabolites and beneficial chemical compounds that do not belong to the plant kingdom. These products, such as mushrooms and algae, have shown positive effects on animal production even at...

To evaluate the phytobiotic effect of Anacardium occidentale leaf powder (AOLP) on growth performance, diarrhea incidence, blood biochemistry, and intestinal traits, seventy-two weaned piglets were randomly distributed into four groups (six replicates/group and three pigs/replicate) for 28 days, receiving a control diet (T0) or being supplemented w...

In Latin America, subtherapeutic antibiotics are commonly used in the production of monogastric animals, although their use in rabbits is less relevant than in poultry and pigs. It is known that their use generates bacterial resistance, and they have proven harmful effects on human health. This review addresses the characterization and use of new n...

A total of 700 one-day-old Dekalb White® birds were randomized into two treatments and seven repetitions to evaluate the inclusion of 0.01% of a lipase enzyme with an energy contribution of 0.42 MJ/kg during five productive stages: starter 1 (1- 3 weeks) starter 2 (4-6 weeks), grower (7-10 weeks), development (11-15) and pre-lay (16-17). The inclus...

Livestock in Latin American and the Caribbean is developing based on naturalized meadows with low productions and nutritive contribution, hence the introduction of species with high productive potential and nutritive quality is necessary. Therefore, the effect of regrowth age on yield indicators, chemical composition and digestibility of Cenchrus p...

To evaluate the phytobiotic effect of the mixed powder of medicinal plants on the productivity and egg quality of laying hens, 120 White Leghorn birds (Hybrid L-33), 27 weeks old, were used. For 10 weeks, the animals were placed according to a completely randomized design with three treatments, 10 repetitions per treatment and four birds per repeti...

The study aimed to assess the in vitro antimicrobial and antioxidant properties of leaves and aqueous extracts from four medicinal plants (Anacardium occidentale, Psidium guajava, Morinda citrifolia, and Moringa oleifera). The evaluation included six bacterial strains, determining minimum bactericidal concentration (MBC) for leaves and minimum inhi...

Se utilizaron 960 gallinas y 96 gallos (para una relación hembra – macho 10:1) reproductores semirrústicos de 27 semanas de edad, se distribuyeron según diseño completamente aleatorizado durante 10 semanas, con 4 tratamientos, 8 repeticiones: control concentrado de maíz/soya, 5, 7.5 y 10 % de inclusión de harina de follaje de Tithonia y constituido...

Simple Summary Despite scientific evidence and a ban by the European Union, antibiotic growth promoters (AGPs) are still commonly used in intensive pig production systems in many countries to decrease gastrointestinal problems and improve feed efficiency and growth. Concerns over the adverse effects of antibiotics on human health have led to a sear...

A total of 1,500 one-day-old Hy-Line W36 pullets were randomized in two treatments, 15 repetitions and 50 pullets per repetitions to evaluate the dietary use of a processed vegetable ingredient (PVI) as a functional feed on the growth performance of pullets. The dietary treatments consisted of the inclusion of 10, 8, 5, and 3 % of the processed veg...

Objective. Characterizing the chemical composition of pre-dried chicken intestines with vegetable meal (VM), as an alternative source of protein for aquaculture. Materials and methods. Chicken intestines, grounded, cooked and defatted (CIGCD), were mixed individually with VM: rice powder (RP), wheat bran (WB), palm kernel cake (PKC), cornmeal (CM)...

The aim of this experiment was to evaluate the inclusion of discarded red bean (Phaseolus vulgaris L.) meal on performance and egg quality of laying hens. A total of 80 hens of the Hy-Line White® genetic line were randomly distributed for 10 weeks in two treatments, eight replicates per treatment and five birds per replicate. The dietary treatments...

Simple Summary Although many countries have eliminated the use of antibiotics as growth promoters in poultry diets, more than 40 countries still use subtherapeutic antibiotics daily to reduce bacterial diseases triggered by the intensive production process, which has provoked microbial resistance and cross-resistance to other microorganisms. Thus,...

La industria avicola provee a la población muncial de una de las proteinas más baratas y de mas fácil acceso, los huevos de gallina. No obstante, el encarecimiento de los ingredientes convencionales (maíz y soya) han provocado que el empleo de estos en las dietas reduzca la viabilidad económica en las explotaciones avicolas. Es por ello que el empl...

With the objective of determining the nutritional constituents, amino acids and the content of secondary metabolites of the foliage meal of Tithonia diversifolia. For this, plant material was collected 70 days after regrowth. The percentages of DM, CP, P, Ca, Si, CF, NDF, ADF, ADL, Cel, Hcel, CC were determined; amino acid profile (methionine, cyst...

Objective. To determine the response of the productive indicators when including palm (Elaeis guineensis) kernel cake (PKC) in diets for the nutrition of tilapia fry (Oreochromis niloticus). Material and methods. Three hundred sex-reversed males of tilapia (4.89±0.09 g) were used and distributed according to a completely random design for 60 days,...

Simple Summary Natural products have been used as an alternative to the indiscriminate use of subtherapeutic antibiotics for improving the growth of animals. Although these synthetic products have been used in rabbits to a lesser extent than in other monogastrics, several natural products have been tested with positive responses in growth performan...

Antibiotic growth-promoters in animal feeding are known to generate bacterial resistance on commercial farms and have proven deleterious effects on human health. This review addresses the effects of probiotics and their symbiotic relationship with the animal host as a viable alternative for producing healthy meat, eggs, and milk at present and in t...

In order to evaluate the effect of diets with Ganoderma lucidum mushroom powder and zinc-bacitracin on growth performance, carcass traits, lymphoid organ weights, and intestinal characteristics in broilers, a total of 600 one-day-old unsexed broilers from Cobb 500 MV × Cobb 500 FF genotype was analyzed for 28 days, following a completely randomized...

To evaluate the effect of the inclusion of L-carnitine on productivity and egg quality of laying hens, a total of 200 Hy-Line Brown ® hens of 85 weeks old were randomly distributed into two treatments, with 20 repetitions/treatment and five hens/repetition for 10 experimental weeks. Dietary treatments consisted of a control diet and the inclusion o...

Simple Summary Hibiscus rosa-sinensis is a medicinal plant recognized for its pharmacological chemical compounds for humans and animals. Hibiscus rosa-sinensis hyperproducer forage technology yields 10–20 t DM/ha/year (t of dry matter/ha/year), depending on the agronomic conditions. Chemical composition of hibiscus forage meal is similar to alfalfa...

The aim of this study was to evaluate the effect of dietary supplementation with Agave fourcroydes powder on growth performance, carcass traits, organ weights, gut morphometry, and blood biochemistry in broiler rabbits. A total of 40 male rabbits (New Zealand × Californian) weaned at 35 d were randomly selected for a control diet (CD) and CD + 1.5%...

The effect of four levels of inclusion of dry distillery grains with solubles on the productive performance and egg quality of Hy-line Brown® laying hens was evaluated. A total of 140 animals were distributed in four treatments, according to a completely randomized design, for 10 weeks. Seven repetitions per treatment and five birds per repetition...

To evaluate the phytobiotic effect of Jatropha curcas leaf powder on productivity, egg quality and blood biochemistry of laying quail (Coturnix japonica), the phytochemical screening of leaves of this plant was carried out. An amount of 150 laying quails, 25 weeks old, were randomly distributed into three treatments and five repetitions per treatme...

In order to evaluate the effect of oral administration of efficient microorganisms on the productive indicators, diarrheal syndrome and blood count in suckling pigs, an experiment with 20 piglets, one day old (1.83 ± 0.31 kg of live weight) was developed, in the enterprise Cría Pedregales, belonging to Empresa Porcina Granma, Cuba. Two treatments w...

Simple Summary Currently, many poultry productions supply drinking water extracted from wells or other sources whose physical, chemical and microbiological characteristics are sometimes unknown, especially pH and its impact on production and health of the birds during their productive life. The following study evaluated the effect of an acidifier (...

A total of 240 Dekalb White® hens, 100 weeks old, were randomly distributed into two treatments for 20 weeks, with four repetitions per treatment and 30 animals per repetition, to evaluate the effect of palm kernel meal on productivity, egg quality and economic feasibility of old laying hens. The experimental treatments consisted on a control diet...

This study was designed to determine the effect of a combination of propionic-acetic acid on body weight, the relative weight of some organs, lactic acid bacteria, and intestinal pH of neonatal broilers. A total of 60 1-day-old Ross 308® broiler chickens were randomly placed in metabolic cages to two treatments, three replicates, and ten birds per...

A total of 330 eggs from Dekalb® White laying hens at full laying peak were collected the same day and randomly distributed into 165 eggs stored at room temperature (26.50°C ± 5.48) and 165 eggs at a controlled temperature (7.8°C ± 0.01) over 10 days. The daily changes in external and internal egg quality were determined using automatic equipment....

At present, the poultry industry places great importance on natural pigment products to achieve an acceptable yolk color for the market. To determine the effect of achiote seed powder on the external and internal egg quality, a total of 400 Dekalb White egg-laying hens at 38 wk of age were placed for 56 d in a completely randomized design with 4 tr...

Simple Summary Currently, due to the high developments achieved in the poultry industry especially in genetics, management, nutrition, health, and animal welfare, modern broilers reach slaughter weight at an earlier age, which in turn has brought about notable changes in the morphophysiology of these birds. The following research proposes to determ...

In order to evaluate the phytobiotic effect of cashew (Anacardium occidentale L.) leaves powder (CLP) on growth performance, carcass traits, lymphoid organ weights and cecal lactic-acid bacteria in broilers, a total of 720 unsexed broilers of the Ross 308® genetic line were distributed according to a completely randomized design with three experime...

The use of nutritional requirements adjusted to the new broiler genotypes defines their optimal genetic expression. Thus, broiler breeders, universities, and scientific institutions have carried out research with different nutritional requirements to improve the productive efficiency of broilers and decrease production costs. This test aimed to eva...

Background: To evaluate the biological response of the sows and their offspring with oral administration of Lactobacillus plantarum CAM6 in breeding sows, a total of 20 Pietrain breeding sows with three farrowings and their descendants were used, randomly divided into two groups of 10 sows each. Treatments included a basal diet (T0) and basal diet...

In order to evaluate the phytobiotic effect of Psidium guajava (guava) leaf powder on the productivity and quality of the egg of laying hens, a phytochemical screening of the leaves under study was previously developed. A total of 160 White Leghorn L-33 hens, of 27 weeks old, were randomly distributed for 70 days in four treatments, with 10 repetit...

The objective of the study was to determine the growth performance, carcass traits and economic response of broiler chickens fed of palm kernel (Elaeis guineensis) meal (PKM). A total of 120 one-day-old Cobb-500® male chicks were evaluated for 47 days and were assigned to four dietary treatments using a completely randomized design. Dietary treatme...

Objective: This study was conducted to assess the inclusion of discarded corn grain from a plant of seed selection on growth performance of egg-laying pullets. Methodology: A total of 1,416 one-day-old Dekalb White® egg-laying pullets were placed according to a completely randomized design for 16 weeks. The two treatments consisted: a control diet...

Antecedes: El empleo de la cama avícola es un factor importante para los productores; se requiere materiales que brinden un buen confort para el ave y no depriman su potencial productivo. Objetivo: Evaluar el uso del raquis de maíz troceado como cama en el desempeño productivo de pollitas ponedoras de reemplazo Dekalb White® (1-16 semanas). Método...

Antecedentes: Los Lactobacilos spp. son los microorganismos probióticos más usados en la industria porcina, sobre todo para mejorar la eficiencia productiva y la calidad de la carne de los cerdos de ceba. Objetivo. Determinar el efecto de la administración oral de un biopreparado con Lactobacillus plantarum CAM-6 en el comportamiento productivo y...

Simple Summary Currently, due to intensive production, pigs are weaned early, which generates stress due to separation from the sow, metabolic disorders, and decreased productive performance. Thus, sub-therapeutic antibiotics have been used to alleviate these detrimental effects; however, it has been shown that these practices create microbial resi...

Simple Summary In the pig industry (mainly after weaning), enteric diseases are frequent associated with pathogenic bacteria such as Salmonella spp. and E. coli. Although the European Union has banned the use of growth-promoting antibiotics, many countries use these synthetic medications with widespread, which has led to an increase in the number o...

The physical-chemical composition of fruit peels was characterized in order to obtain a biopreparation from a culture medium with aqueous extracts of fruit peels (banana, pineapple and papaya) for growing Lactobacillus plantarum CAM-6 and the evaluation of its kinetic parameters and stability over time. Then, an experiment with a completely randomi...

Background and Objective: The challenge for nutritionists is to formulate diets with available alternative sources to reduce production costs, without depressing animal performance. The objective of this study was to evaluate the effects of inclusion levels of discarded corn grain on growth performance, edible portions, and economic response in bro...

Antecedentes: Los Lactobacilos spp. son los microorganismos probióticos más usados en la industria porcina, sobre todo para mejorar la eficiencia productiva y la calidad de la carne de los cerdos de ceba. Objetivo. Determinar el efecto de la administración oral de un biopreparado con Lactobacillus plantarum CAM-6 en el comportamiento productivo y c...

Se utilizaron 36 cerdos machos castrados [(Landrace x Pietrain) x Duroc] de 49 días de edad en la primera etapa, con un peso vivo inicial de 10,37 ± 0,5 kg. Los animales se distribuyeron según diseño completamente aleatorizado con 12 repeticiones por tratamiento, donde cada animal constituyó una unidad experimental. Durante el experimento los cerdo...

Diabetes mellitus type 2 (T2DM) is a metabolic disorder develops due to the overproduction of free radicals where oxidative stress could contribute it. Possible factors are defective insulin signals, glucose oxidation, and degradation of glycated proteins as well as alteration in glutathione metabolism which induced hyperglycemia. Previous studies...

Background Currently, daily consumption of green herb functional food or medicinal herbs has gained many followers worldwide as a way of life or even as an alternative to the use of synthetic medicines. Phytochemicals, which are series of compounds of relatively complex structures and restricted distribution in plants, usually perform the defensive...

Camels (Camelus dromedarius) have access to different browsing plant that is a major source of feed and therapeutic value but also has the potential to cause poisoning to the camel. A survey was conducted between July and September 2017 to generate information on medicinal uses, toxicity, and chemical composition of major browsing plant in the Soma...

Background: The material used for poultry bedding is an important factor for breeders, since it requires elements that provide comfort to the birds and do not depress the production potential. Aim: To evaluate the performance of chopped maize rachis as poultry bedding for Dekalb White® replacement layer pullets (1-16 weeks). Methods: A completely...

To determine the secondary metabolites, quality indicators and organoleptic characteristics of stems meal from Agave fourcroydes (Henequen) grown in Cuba, five henequen stems, of approximately nine years old, were collected. The meal was stored for six months. The following analyzes were performed in triplicate: phytochemical screening , pH, refrac...

Currently, herbs, medicinal spices, green medicine, or traditional Chinese medicine has gained many followers in the world, especially as a way of life and as an alternative to the indiscriminate use of synthetic medicines such as antibiotics. These natural products are rich in secondary metabolites or phytochemicals, which are chemical compounds o...

A review of the chemical composition of the Moringa oleifera forage meal (leaves plus stems) and the possibilities of safe use in the feeding of non-ruminant animals was made. The forage meal obtained from Moringa oleifera at 35 to 60 days from regrowth and cut at 5 to 40 cm height from the soil has good protein concentration, and its amino acid co...

Background and Objective: The daily use of sub-therapeutic antibiotics in birds causes microbial resistance and cross resistance to other microorganisms, which directly affects poultry production. The objective of this study was to evaluate the nutraceutical effect of the Ganoderma lucidum fungus on growth performance, relative weight of the viscer...

The aim of this study was to determine the effects of dietary supplementation with red algae powder (Chondrus crispus) on the growth performance, carcass traits, lymphoid organ weights and intestinal pH in broiler chickens. A total of 300 1-day-old B34 line male broiler chickens were randomly allotted to three treatments, four replicates per treatm...

To evaluate the effect of diet supplementation with Agave tequilana stem meal on indicators of blood health and blood biochemistry of fattening rabbits, 64 animals of New Zealand x California breed, with 35 days old and for 60 days, were located according to a completely randomized design, with eight repetitions and two animals per repetition. At t...

To evaluate the chemical composition of the earthworm (Eisenia foetida) co-dried (EW) with vegetable meals (VM) as animal feed ingredient, the blends were mixed with wheat bran (WB), rice powder (RP), corn meal (CM) and soy cake meal (SCM) in proportions of 85:15; 75:25 and 65:35. The dry matter (DM), crude protein (CP), crude fat (CFA), crude fibe...

Background: Additives from plants are considered an alternative to antibiotics due to their safety and null residual effects. The secondary metabolites in the leaf powder of Origanum vulgare (oregano) and Ficus pandurata were analyzed. Methods: The experiment was done at the Center for Studies of Applied Chemistry, at the Faculty of Technical Scie...

The ensilability and chemical composition of silages made with different proportions (100:0; 90:10; 80:20; 70:30; 60:40 and 50:50%) of foliage (fresh and pre-wilted) and noni fruit (fresh) was evaluated. Some fermentative patterns of the original forages and the chemical content of the silages were determined. Correlations between the parameters of...

This study was conducted to determine the effects of dietary inclusion with linseed and pumpkin seed meals on growth performance, carcass traits and breast meat fatty acids profile of helmeted guinea fowls. A total of 120 meat-type helmeted guinea fowl females of 12 weeks of age were fed with 0 (T0), 100 (T1) and 200 (T2) g/kg of linseed (LM) and p...

Introduction: Argemone mexicana Linn is a native plant of the north of Mexico, belongs to the genus Argemone of the family Papaveraceae; it has a high concentration of benzylisoquinolinic alkaloids and medicinal properties in all its organs; however, no information was available on the phytochemical and antimicrobial characterization of the roots o...

The trial was designed to determine the effect of the mixed powder of leaves of Anacardium occidentale (60%), Psidium guajava (20%), and Morinda citrifolia (20%) on growth performance, nutrient digestibility, and immunoglobulin concentration in broiler chickens. A total of 80 one-day-old Ross 308 broiler chickens were randomly assigned to two dieta...

Methionine is an aliphatic, sulfur-containing, essential amino acid, and a precursor of succinyl-CoA, homocysteine, cysteine, creatine, and carnitine. Recent research has demonstrated that methionine can regulate metabolic processes, the innate immune system, and digestive functioning in mammals. It also intervenes in lipid metabolism, activation o...

To evaluate the effect of feed supplementation based on a mixture of from medicinal plants powder (40 % Psidium guajava L.; 20 % Morinda citrifolia L.) on production and quality of eggs from laying hens, 160 White Leghorn hy-brid hens (L-33), 27 weeks old, were grouped in one control without additives, and three feed supplements for 70 days, follow...

To evaluate the antidiarrheal effects of Anacardium occidentale L. leaf powder, 45 two-day old White Leghorn hybrid chicks (L-33) were included in an experiment following a completely randomized design with three treat-ments, for 8 hours. The feed treatments consisted in basal diet (BD), BD + 1.0 % of Anacardium occidentale L. leaf powder, and BD +...

Para evaluar el efecto de la suplementación dietética con polvo mixto de hojas de plantas con propiedades nutracéuticas (40 % A. occidentale, 20 % M. oleifera, 20 % M. citrifolia y 20 % P. guajava) en el comportamiento productivo y en la incidencia de diarrea en cerdos posdestete, se utilizaron 150 cerdos (Yorkland x Yorkshire) de 33 días de edad,...

This study is aimed at determining the effects of dietary enzymolysis products of wheat gluten on the growth performance, organ weights, serum and intestinal antioxidant indices, serum biochemical indicators, and immunoglobulins of broiler chickens. The treatments consisted of a basal control diet, 2% of wheat gluten, and 1%, 2%, 3%, and 4% of enzy...

RESUMEN Los centros de estudio se han convertido en estructuras imprescindibles para el desarrollo de las universidades cubanas dada su responsabilidad con la investigación científica, el posgrado y la solución de problemas, sobre todo del sector productivo. El presente trabajo tiene como objetivo caracterizar las líneas y temas de investigación de...

This research aims to evaluate the effects of dietary supplementation with Saccharomyces cerevisiae cell wall extract (SCCWE) on growth performance, oxidative stress, intestinal morphology, and serum amino acid concentration in weaned piglets. Utilizing a completely randomized design, 40 healthy piglets weaned at 21 d were grouped into 4 experiment...

Para evaluar el peso relativo de los órganos y vísceras de pollos camperos alimentados con harina de morera (Morus alba), un total de 400 aves de un día de edad, se ubicaron según diseño totalmente aleatorizado con 10 repeticiones y 10 pollos por repetición. Las dietas experimentales consistieron en la inclusión de 0, 10, 20 y 30 % de harina de mor...

Introducción: las hojas de Anacardium occidentale L. se han utilizado con efectividad para combatir diversas afecciones en aves, cerdos, cobayos, ovinos, conejos, bovinos y humanos. A pesar de todos los beneficios medicinales, para nuestro conocimiento pocas investigaciones se han desarrollado como aditivo en las dietas de las gallinas ponedoras. O...

Introducción: el tamizaje fitoquímico de una planta brinda una percepción sobre los posibles beneficios medicinales; la literatura refiere información de esta determinación en las hojas de Anacardium occidentale L., Psidium guajava L., Morinda citrifolia L. y Moringa oleifera Lam. , no obstante, en cuanto al polvo mixto de sus hojas no se encontró...

La caracterización de los animales domésticos constituye una herramienta fundamental para su conservación y uso sostenible. El objetivo del presente trabajo fue caracterizar morfológicamente al asno Criollo Cubano. Se estudiaron 93 ejemplares pertenecientes a la provincia Granma, Cuba, de ellos 51 eran hembras. Se realizaron 23 mediciones morfológi...

This study was conducted to determine the effects of Agave fourcroydes powder as a dietary supplement on the growth performance, gut morphology, serum concentration of IgG, and the hematology parameters of broiler rabbits. A total of 32 rabbits [New Zealand × Californian] were weaned at 35 days. They were randomly selected for two dietary treatment...

This study was conducted to determine the effect of dietary sanguinarine supplementation on serum metabolites in growing pigs. A total of 240 (Yorkshire ´ [Duroc ´ Landrace]) pigs at 6 wk of age were randomly allotted to 3 dietary treatments, with 8 replicates per treatment and 10 piglets per replicate. The dietary treatments were as follows: the b...

Caracterización físico-química de la harina de tallos de Agave fourcroydes Lem (Henequén) Resumen Las plantas del género Agave almacenan compuestos que en su mayoría son carbohidratos no amiláceos, los cuales son elementos nutracéuticos que pueden emplearse en las dietas de especies monogástricas. Por tanto, el objetivo de este estudio fue caracter...

La descripción de los parámetros biométricos de los recursos genéticos, resulta esencial para la elaboración de programas de conservación. El presente trabajo se llevó a cabo con el objetivo de establecer el patrón morfológico del asno Criollo Cubano, en la región oriental de Cuba. Se estudiaron 331 asnos entre 3-10 años, de ellos 241 hembras. Se c...

Las Agavaceae poseen un adecuado contenido de fructanos que promueven su adición en las dietas para monogástricos, con el propósito de sustituir el empleo de antibióticos como promotores del crecimiento. Se evaluó el comportamiento productivo y las características de la canal de conejos en crecimiento-ceba alimentados con adiciones de 0,5; 1,0 y 1,...

Macleaya cordata extract is of great scientific and practical interest to researchers, due to its antimicrobial and anti-inflammatory responses within experimental animals. This study was designed to determine the diarrhea score and innate immunity of growing piglets after they had received Macleaya cordata extract supplements. A total of 240 growi...

Medicinal extract has been chronicled extensively in traditional Chinese medicine. Isoquinoline alkaloids, extract of Macleaya cordata (Willd.) R. Br., have been used as feed additive in both swine and poultry. Dietary supplementation with isoquinoline alkaloids increases feed intake and weight gain. In addition, recent researches have demonstrated...