In lactating ewes, energy demand increases for milk production, reserve mobilizations, and body weight maintenance. For reconversion to energy, ruminants require ruminal propionate production because it is the most predominant substrate gluconeogenesis one of relevant pathways since allows an adequate supply glucose. Calcium supplementation alternative increase glucose by external additive. Thus, objective was evaluate effect calcium (CaPr) on metabolomic profile ewes. Sixteen Rambouillet...

Se evaluó el efecto del jugo de 10 variantes tuna sobre la glucemia y parámetros metabólicos relacionados en ratas Wistar glucostáticas (GS) e hiperglucémicas (HG). La elección las se basó su abundancia potencial económico fruto estado San Luis Potosí, grado humanización los colores tuna. utilizó un diseño experimental completamente al azar con arreglo factorial (11 x 2) tratamientos, donde factor A correspondió variante (10 agua como control), B salud (GS HG). En mayoría tratamientos hubo...

BACKGROUND Inulin and other fructans are synthesized stored in mezcal agave (Agave salmiana). Fructans provide several health benefits have excellent technological properties, but only few data report their physiological effect when added the diet. RESULTS Here, we studied effects of obtained from A. salmiana diet Wistar rats. Results showed favorable changes on rats was to diet, including decrease pH feces increase number lactic acid bacteria (CFU g−1) (Lactobacillus spp. Bifidobacterium...

The small-scale dairy farms are challenged to produce milk in a specific quantity and quality that encourages greater consumer demand an appropriate transformation into cheese, yoghurt candy, ensuring profitability.A study assess the of raw stored containers without cooling system was carried out 30 production units located south Mexico City, according standard PROY-NOM-155-SCFI-2003.The were evaluated during three seasons (dry, rainy winter) classified by type procedures for cleaning udder,...

Sugarcane cultivation is an agricultural activity of worldwide importance.This crop has been cultivated in Mexico for centuries, impacting important productive areas like the study region called Huasteca Potosina which located at Central-East part Mexico.The relationship between soil conditions, weather and production per hectare allows identifying edaphological climatic conditions (aptitude levels) cultivating sugarcane area.The objective this research work to analyze relation hectares...

Abstract Pinos-Rodriguez, J.M., Aguirre-Rivera, J.R., Mellado, M., García-López, J.C., Álvarez-Fuentes, G., Méndez-Villazana, J.C. 2007. Chemical and digestibility characteristics of some woody species browsed by goats in Central Mexico. J. Appl. Anim. Res., 32: 149–153. A study was conducted during fall Mexico to determine the chemical composition, situ disappearance rate fermentation ten common used a semi-humid landscape. Leaves Parkinsonia aculeata, Pithecellobium dulce, Ceratonia...

Livestock production systems are responsible for producing ~18% of the total anthropogenic greenhouse gas (GHG) emissions. Numerous alternatives, such as feed additives or supplements, have been proposed to meet these challenges. Marine algae reduction in ruminants; nevertheless, there still very few experimental reports. Thus, objective current study was identify volatile organic compounds (VOCs) three marine algae—Kelp (Macrocystis pyrifera), Ulva (Ulva spp.), and Silk (Mazzaella spp.)—and...

The aim of this work was to supplement a diet with chia seeds (Salvia hispanica L.) based on the requirements finishing lambs for meat, and analyze biometric parameters fatty acid profiles in meat. Eighteen male Rambouillet bodyweight 25 kg were used. Animals kept individual pens water feed provided ad libitum. Three diets designed inclusion 0, 50 100 g dry matter divided among animals (n = 6). experimental period lasted 60 days. weights recorded every 14 At end experiment, slaughtered hot...

Abstract27 Creole and 27 Plymouth Rock x Rhode Island Red hens (cross) 47 months old were used to estimate the effect of three diets; commercial diet, corn + alfalfa homemade diet on egg weight, white, yolk, shell, dry matter, protein, fat ash content yolk; lipid fraction fatty acid profile yolk was estimated too. Eggs collected at 53 weeks age, 30 eggs per treatment randomly selected for laboratory analysis. No differences (P>0.05) found egg, shell weight between genetic groups; inside...

Se estudiaron características fisiológicas y morfológicas de plántulas especies leñosas (nodrizas) suculentas (protegidas), las cuales se distribuyen en un gradiente ambiental el Altiplano Mexicano. Del extremo mésico eligieron Acacia schaffneri, A. farnesiana Opuntia jaliscana y, del xérico escogieron Prosopis laevigata O. streptacantha . En experimento invernadero, 24 semanas edad fueron sometidas por 90 días a diferentes niveles radiación (alta = 2133 μmol m-2d-1, baja 66 m-2d-1), humedad...

El objetivo de este trabajo fue evaluar la carga microbiológica coliformes totales (CT), Staphylococcus aureus y Salmonella spp en leche quesos frescos como indicadores prácticas proceso que se realizan queserías diferentes localidades región Salinas, San Luis Potosí. Se muestrearon 15 establecimientos, obtuvieron muestras queso les realizó un análisis composición microbiológico. 65 % las unidades producción no pasteuriza o utiliza cuajo natural. Los conteos más elevados fueron 42 x 109 40...

En la región que comprende el acuífero Calera, Zacatecas, producción intensiva del cultivo de chile (Capsicum ssp.) es suma importancia económica, y depende totalmente agua subterránea un sobreexplotado en una zona cárstica semiárida, disponibilidad se torna más limitada calidad relevancia. El objetivo investigación fue evaluar impacto a química determinar su aptitud para uso agrícola mediante los criterios salinidad, sodicidad toxicidad. Durante dos ciclos consecutivos realizó muestreo...

The present study aimed to evaluate the effect of copra meal (the waste coconut oil industry) on in vitro ruminal kinetic and greenhouse gases production vivo lamb performance. Twenty-eight male Rambouillet sheep (initial body weight 24.5 ± 3.9 kg) were randomly assigned one four treatments: 0, 50, 100, 150 g meal/kg their diet (dry matter basis). Final weight, gain, feed intake not affected (p > 0.05) by addition. gas volume (V) decreased, rate increased, a linear trend < as was added...

The aim of the present study was to assess nutrient contents and potential feeding value in diet broiler chicks seed three tree species, mesquite (Prosopis laevigata), Schaffneri´s wattle (Acacia schaffneri) carob (Ceratonia siliqua). dry matter (DM), ash, crude protein (CP), amino acid fatty concentrations seeds were determined. Growth performance measured terms weight gain, feed intake conversion ratio. Sixty-four day-old Cobb randomly assigned following treatments: control diet; + P....

The aim of this study was to assess the profitability extensive goat production through on-farm research. Eleven farms were used; purchased inputs and sales recorded for two years total gross margin calculated, excluding family labour. Labour intensity labour efficiency compared. Univariate analyses correlations used explain producers' profitability. All sources income per farm assessed, compared contrasted with official poverty indexes. area land cultivation grazing knowledge agriculture...

In the Mezquital Valley, Mexico, Agave leaf fibers are obtained traditionally from A. mapisaga (cultivar Ma'ye), salmiana (cultivars Chino cenizo and Xa'mni) spp. crassispina It'ui). The purpose of study was to analyze some basic physical characteristics these four cultivars that relevant for textile production. Measurements were taken length (cm), diameter (µm), linear density (dtex), tensile strength (N), color. Fibers sampled marginal central parts young leaves. Statistical analysis...

We tested whether maternal energy supplementation during the last third of gestation improves birth weight, neonatal wellbeing, and mother–young bonding. Thirty-six pregnant French Alpine goats were randomly allocated among three nutritional treatments for pregnancy: (i) Control, fed alfalfa (T-0; n = 12); (ii) + 150 g/head daily concentrate (T-150; (iii) 300 (T-300; 12). At birth, we collected progeny data on type, sex, rectal temperature, heart rate, respiratory time to standing, udder...

The aim of the present study was to assess potential natural compounds for control Varroa destructor in colonies Apis mellifera, antimite hydrolate and ethanolic extract (Leatricina®) creosote bush (Larrea tridentata) evaluated at a concentration 50%; contrasting them with synthetic chemical amitraz under vitro conditions (48 h) hive (52 days). There were differences (p<0.05) In mortality higher values (97.9%) compared (53.1%) Leatricina® (51.5%); Creosote extracts similar (p> 0.05)....

El objetivo fue evaluar el efecto de los diferentes protocolos castración por medio del meta-análisis indicadores consumo diario alimento, conversión alimenticia, ganancia diaria peso, peso al rastro, la canal caliente y rendimiento canal. Se revisaron 179 publicaciones tres fuentes electrónicas (Scopus, PubMed, Web of Science) en un periodo 24 años, las cuales se seleccionaron 26 estudios que cumplieron con criterios inclusión. analizó seis comparaciones: C1=castración quirúrgica vs...

Las medidas corporales lineales (MCL) se pueden utilizar para desarrollar criterios de selección animales cría. Estas son una forma indirecta estimar el peso vivo (PV) en algunos herbívoros. El objetivo este estudio fue obtener fórmula que permita hembras (PVH) caprinas sin báscula a partir cinco MCL. Se registró la longitud corporal (LC), perímetro torácico (PT), anchura grupa (AG), altura (ALG), cruz (AC) y PV con (PVB) 206 criollas región del Altiplano (RA) Valle San Fernando (RVSF)...