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Effect of somatic cell count and mastitis pathogens on milk composition in Gyr cows
(London, 2013)
Abstract
Background
Gyr cows are well adapted to tropical conditions, resistant to some tropical diseases and have satisfactory ...
Estimativa do Consumo Voluntário do Capim-Tanzânia (Panicum maximum, Jacq. cv. Tanzânia) por Vacas em Lactação sob Pastejo Rotacionado
(2001-11-01)
The trial was carried out in a Tanzania grass (Panicum maximum) pasture, rotationally grazed by lactating cows, to estimate the dry matter intake. Three treatments were tested: crossbred cows fed 3 kg per day of concentrate ...
Fertility in Holstein cows (Bos taurus) inseminated with sexed semen of Gyr bulls (Bos indicus) in small-scale dairy herds at Irrigation Majes, Arequipa, PeruFertilidad en vacas Holstein (Bos taurus) inseminadas con semen sexado de toros Gyr (Bos indicus) en ganaderías lecheras de pequeña escala en la Irrigación Majes, Arequipa, Perú
(Universidad Nacional Mayor de San Marcos, Facultad de Medicina Veterinaria, 2022)
Effect of somatic cell count and mastitis pathogens on milk composition in Gyr cows
(2013-04-08)
Abstract
Background
Gyr cows are well adapted to tropical conditions, resistant to some tropical diseases and have satisfactory milk production. However, Gyr dairy herds have ...
Effect of somatic cell count and mastitis pathogens on milk composition in Gyr cows
(2013-04-08)
Abstract
Background
Gyr cows are well adapted to tropical conditions, resistant to some tropical diseases and have satisfactory milk production. However, Gyr dairy herds have ...
Evaluation of somatic cell count thresholds to detect subclinical mastitis in Gyr cows
(ELSEVIER SCIENCE INC, 2011)
The objectives of this study were (1) to determine the sensitivity (Se) and specificity (Sp) of somatic cell count (SCC) thresholds to identify subclinical mastitis in Gyr cows caused by major and minor pathogens; (2) to ...
Effect of the genetic group of cows of the Gyr and Holstein breeds on the in vitro production technique of bovine embryos
(Colombia, 2020-07-21)
The aim of this study was to evaluate the genetic group effect of oocyte donors of the Gyr and Holstein breeds on the performance of the in vitro embryo production technique. Twelve multiparous cows were used, non-lactating, ...
Are dairy cows with a more reactive temperament less efficient in energetic metabolism and do they produce more enteric methane?
(2021-06-01)
It remains unknown whether dairy cows with more reactive temperament produce more enteric methane (CH4) and are less bioenergetically efficient than the calmer ones. The objectives of this study were (a) to evaluate the ...
Influence of sire and sire breed (Gyr versus Holstein) on establishment of pregnancy and embryonic loss in lactating Holstein cows during summer heat stress
(Elsevier B.V., 2007-03-01)
Heat stress has negative effects on pregnancy rates of lactating dairy cattle. There are genetic differences in tolerance to heat stress; Bos taurus indicus (B. t. indicus) cattle and embryos are more thermotolerant than ...
Influence of sire and sire breed (Gyr versus Holstein) on establishment of pregnancy and embryonic loss in lactating Holstein cows during summer heat stress
(Elsevier B.V., 2007-03-01)
Heat stress has negative effects on pregnancy rates of lactating dairy cattle. There are genetic differences in tolerance to heat stress; Bos taurus indicus (B. t. indicus) cattle and embryos are more thermotolerant than ...