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AbstractFull Text

Holstein calves (n=767) from a commercial herd were used to determine the effect of birth weight (BW), weaning weight (WW) and preweaning average daily gain (ADG) on subsequent reproductive performance of heifers inseminated with sex-sorted semen in a hot environment (25°N; mean annual temperature...

Author(s)
López, E.; Véliz, F. G.; Carrillo, E.; Santiago, Á. de; García, J. E.; Mellado, M.
Publisher
Veterinarska Fakulteta, Univerza v Ljubljani, Ljubljana, Slovenia
Citation
Slovenian Veterinary Research, 2018, 55, 1, pp 35-42
Abstract

In a first study, 231 cows with retained placenta (RP) were assigned to four groups and their reproductive performance after treatment was studied. Group 1 received 2.0 mg/kg ceftiofur hydrochloride (CH), 10 mg estradiol cypionate (ECP) and 100 IU oxytocin for three consecutive days (CEO-3; n=63)....

Author(s)
Mellado, M.; Solano, R.; Veliz, F. G.; Santiago, A. de; Gaytan, L.; Garcia, J. E.
Publisher
Hellenic Veterinary Medical Society, Athens, Greece
Citation
Journal of the Hellenic Veterinary Medical Society, 2017, 68, 4, pp 513-520
Abstract

An epidemiological study of risk factors for fetal losses was carried out on 62,403 high-yielding Holstein cows in 29 large highly technified dairy herds in northern Mexico (25°N; 23.5°C mean annual temperature). Multivariate multiple-group response model indicated that fetal losses between 43 and...

Author(s)
Mellado, M.; López, R.; Santiago, Á. de; Veliz, F. G.; Macías-Cruz, U.; Avendaño-Reyes, L.; García, J. E.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2016, 48, 6, pp 1247-1252
Abstract

The objective of this work was to obtain prevalence estimates of cloudy vaginal mucus in artificially inseminated Holstein cows raised under intense heat, in order to assess the effect of meteorological conditions on its occurrence during estrus and to determine its effect on conception rate. In a...

Author(s)
Mellado, M.; Lara, L. M.; Veliz, F. G.; Santiago, M. Á. de; Avendaño-Reyes, L.; Meza-Herrera, C.; Garcia, J. E.
Publisher
Empresa Brasileira de Pesquisa Agropecuária, Brasilia, Brazil
Citation
Pesquisa Agropecuária Brasileira, 2015, 50, 6, pp 492-498
Abstract

Background: High environmental temperature coupled with high humidity can result in reproductive failure in dairy cattle, with a drastic reduction in reproductive efficiency of dairy herds. Objective: To study the effect of high environmental temperature on reproduction performance of Holstein cows ...

Author(s)
Mellado, M.; Sepulveda, E.; Meza-Herrera, C.; Veliz, F. G.; Arevalo, J. R.; Mellado, J.; Santiago, A. de
Publisher
Universidad de Antioquia, Medellín, Colombia
Citation
Revista Colombiana de Ciencias Pecuarias, 2013, 26, 3, pp 193-200
Abstract

This study aimed to investigate the effect of heat stress and month of birth on growth performance, pelleted starter intake, and stress-related hormones in Holstein calves. Birth weight and growth records, representing 4735 Holstein calves from a large commercial dairy herd in northern Mexico (25°...

Author(s)
López, E.; Mellado, M.; Martínez, A. M.; Véliz, F. G.; García, J. E.; Santiago, A. de; Carrillo, E.
Publisher
Springer-Verlag GmbH, Berlin, Germany
Citation
International Journal of Biometeorology, 2018, 62, 4, pp 493-500
Abstract

Several studies suggest that reproductive performance in small-scale dairy farms is low reducing the farms' profitability. Therefore, identifying risk factors associated with low reproductive performance is a key step to implement an improved reproductive management program. Accordingly, the aim of ...

Author(s)
Montiel-Olguín, L. J.; Estrada-Cortés, E.; Espinosa-Martínez, M. A.; Mellado, M.; Hernández-Vélez, J. O.; Martínez-Trejo, G.; Ruiz-López, F. J.; Vera-Avila, H. R.
Publisher
Springer Berlin, Heidelberg, Germany
Citation
Tropical Animal Health and Production, 2019, 51, 1, pp 229-236
Abstract

A field study involving 7734 Holstein calves from eight large intensive dairy herds in northern Mexico (26° N; 24.2°C mean annual temperature; same location) was conducted to determine factors associated with early postnatal (one to 21-d of age) dairy calf mortality. The effects of season of birth, ...

Author(s)
Mellado, M.; Lopez, E.; Veliz, F. G.; Santiago, M. A. de; Macias-Cruz, U.; Avendaño-Reyes, L.; Garcia, J. E.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Livestock Science, 2014, 159, pp 149-155
Abstract

In pasture-based dairy systems, there is a close relationship between milk production and dry matter intake (DMI), hence the importance of measuring these variables, although obtaining this information implies high labour and costs. The objective of this study was to design a mathematical model to...

Author(s)
Sánchez-Pérez, R.; Mariezcurrena, M. D.; Elghandour, M. M. M. Y.; Mellado, M.; Camacho-Diaz, L. M.; Cipriano-Salazar, M.; Salem, A. Z. M.
Publisher
Indian Council of Agricultural Research, New Delhi, India
Citation
Indian Journal of Animal Sciences, 2018, 88, 5, pp 598-601
AbstractFull Text

Risk factors for stillbirth were studied in a dairy operation in northern Mexico (25°N). Data set consisted of 29406 full term calving records. Factors affecting stillbirths were analyzed using a step-wise multivariable logistic regression models. The predictive indicators of stillbirth risk were:...

Author(s)
Mellado, M.; Chávez, M. I.; Macías-Cruz, U.; Avendaño-Reyes, L.; Carrillo, E.; García, J. E.
Publisher
Spanish National Institute for Agricultural and Food Research and Technology (INIA), Madrid, Spain
Citation
Spanish Journal of Agricultural Research, 2017, 15, 2, pp e0403

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