A5071604084- Agricultural and Food Production Studies
- Ruminant Nutrition and Digestive Physiology
- Agroforestry and silvopastoral systems
- Genetic and phenotypic traits in livestock
- Sustainable Agricultural Systems Analysis
- Plant and soil sciences
- Reproductive Physiology in Livestock
- Effects of Environmental Stressors on Livestock
- Rabbits: Nutrition, Reproduction, Health
- Latin American rural development
- Regional Development and Innovation
- Agriculture Sustainability and Environmental Impact
- Global Trade and Competitiveness
- Agriculture and Rural Development Research
- Business, Innovation, and Economy
- Milk Quality and Mastitis in Dairy Cows
- Livestock Management and Performance Improvement
- Psidium guajava Extracts and Applications
- Botanical Research and Applications
- Botany and Plant Ecology Studies
- Animal Nutrition and Physiology
- Pasture and Agricultural Systems
- Pharmacological Effects and Assays
- Agricultural Systems and Practices
- Coccidia and coccidiosis research
Universidad Autónoma del Estado de México
2016-2025
Technological Institute of Celaya
2011
Imperial College London
2005-2007
Wye College
2005
Recently Latin American countries have developed a dairy sheep industry with an increasing number of specialized dairy-sheep flocks. The objective this study was to evaluate the goodness fit empirical and mechanistic models sampling interval model lactation curve F1 different shape curves in intensively managed flock central highlands Mexico. A total 4,494 weekly (7D) test day records (TDR) from 156 lactations were analyzed. Three datasets generated original 7D data set, setting TDR at...
<p><strong>Background. </strong>Silvopastoral systems (SSP) are of interest for the coexistence between animal production, biodiversity and birdlife. <strong>Objective.</strong> Was to carry out a bibliometric analysis contribution silvopastoral in livestock farming production birdlife conservation. <strong>Methodology.</strong> Sixty-nine documents were analyzed from journal databases such as Scopus, Web Knowledge, ISI Science, Science Direct,...
The on-farm evaluation of three feeding strategies for smallholder campesino dairy herds was undertaken in the highlands Central Mexico with cooperating farmers: traditional, alternative and intermediate strategies. All incorporated grazing cultivated pastures, but concentrate use 4.0 7.0 kg per cow day rainy dry seasons respectively traditional strategy, 3.3 strategy both 5.0 9.0 strategy. Feeding during season based on maize straw pasture complemented silage some mostly trial ran between...
The object of this study was to investigate the genetics lactation curve parameters derived from a biological model and relationships among them. This fitted 2 logistic curves mimic initial increase in milk secretory cell numbers early progression apoptosis late lactation. Records 82,255 Holstein-Friesian heifers commercial dairy herds United Kingdom, recorded 1994 2003, were analyzed. heritabilities parameters, maximum secretion potential relative death rate, 0.27 0.08 respectively. Maximum...
The objective of this study was to compare the goodness fit four lactation curve models: Woodâs Gamma model (WD), Wilmink (WL), and Pollottâs multiplicative two (POL2) three parameters (POL3) determine environmental factors affecting complete F1 dairy sheep under organic management. A total 5,382 weekly milk yields records from 150 ewes, management were used. Residual mean square (RMS), determination coefficients (R2), correlation (r) analysis used as an indicator for each model. WL best...
El objetivo del trabajo fue determinar los factores ambientales que determinan parámetros de la curva lactación utilizando un modelo biológico ajuste curva.El propuesto ajusta dos curvas logísticas simulan el incremento inicial en número células secretoras leche temprana, y progresión apoptosis tardía.Se analizaron lactaciones 182.987 vacas Holstein-Friesian.Los vaca, rebaño explican 74% suma total cuadrados (P < 0,001).La edad promedio a primer parto 28 meses, teniendo efecto significativo...
Fourteen Dorper × Pelibuey ram lambs (initial body weight [BW] = 37.4 ± 1.0 kg and age 4.5 mo) were housed in individual pens during a 30-d feeding period, then slaughtered to determine the effects of zilpaterol hydrochloride (ZH) supplementation on productive performance, carcass characteristics wholesale cut yields. Lambs assigned under randomized complete block design BW as blocking factor) one two dietary treatments: basal diet without (control) or with 10 mg daily ZH/lamb. fed ZH had...
The aim of the present study was to evaluate performance Wood model describe characteristics lactation curves dairy ewes under organic management in Mexico. In total, 4861 weekly test-day milk yield records from 194 lactations crossbred were analysed assess an empirical fit their curve. We used mathematical proposed by Wood. evaluation criteria correlation coefficient (r) between values total observed and estimated, determination (R2), mean square prediction error (MSPE). addition, peak...