Results 31 to 40 of about 13,899 (258)
Genetic And Phenotypic Evaluation of Lactation Curve Parameters for Holstein Cattle in Egypt [PDF]
Journal of Animal and Poultry ProductionThis study examined lactation curve parameters and their genetic relationships in Holstein cows using 1,684 test-day milk yield records collected from 2017 to 2019 in Fayoum Governorate, Egypt. Wood's gamma function modeled lactation curves.
Rasha Somedia
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Czech Journal of Animal Science, 2016 The objective of this study was to find genetic relationships between lactation persistency and conformation traits of Polish Holstein-Friesian cows. The data were derived from SYMLEK - the Polish National Database.
A. Otwinowska-Mindur +2 more
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Characterisation of the lactation curve of Gyr and Sardo Negro cattle
Journal of Agriculture and Rural Development in the Tropics and Subtropics, 2023 The objectives were to characterize the lactation curves (LC) of tropical Gyr and Sardo Negro (SN) cattle from Mexico for the design of breeding and management programs for these breeds.
Joel Domínguez-Viveros +6 more
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Irish Journal of Agricultural and Food Research, 2023 Little data are currently available on either the dry matter (DM) production of perennial ryegrass (PRG) swards as they age beyond 5 yr (i.e. permanent pasture) or the performance of PRG varieties on commercial grassland farms.
C. Hearn +6 more
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, 2017 The commercial release of byte-addressable persistent memories, such as Intel/Micron 3D XPoint memory, is imminent. Ongoing research has sought mechanisms to allow programmers to implement recoverable data structures in these new main memories.
Stephan Diestelhorst +6 more
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Genetic evaluation for persistency of lactation in Holstein cows using a random regression model
Genetics and Molecular Biology, 2007 A model for analyzing test day records including both fixed and random coefficients was applied to the genetic evaluation of first lactation data for Holstein cows. Data comprising 87045 test-day milk yield records from calving between 1997 and 2001 from
Jaime Araujo Cobuci +5 more
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The effect of breeding region on differences in persistency of heat stress effect in first parity Simmentals [PDF]
Agroznanje, 2019 In order to determine the effect of breeding region on differences in persistency of heat stress effect in first parity Simmentals test-day records provided by the Croatian Agricultural Agency were analysed.
Gantner Vesna +5 more
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Parameters of lactation shape as related to days-in-milk in buffaloes from two different farming systems [PDF]
Journal of Central European Agriculture, 2020 Buffaloes from intensive (farm 1 - Fm1; 438 normal, 115 short lactations) and pasture (farm 2 - Fm2; 330 + 58 lactations) system were assigned to study lactation curve via ANOVA (LSMLMW and MIXMDL) per each 10-day period (“tenday”), as well as overall ...
Pencho PENCHEV +3 more
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Pesquisa Agropecuária Brasileira, 1999 Este experimento foi conduzido na Embrapa-Centro Nacional de Pesquisa de Gado de Leite, situada em Coronel Pacheco, MG, de outubro de 1995 a outubro de 1997, para avaliar o efeito de cinco doses de nitrogênio (zero, 100, 200, 400 e 600 kg/ha/ano) e três ...
Maurilio José Alvim +3 more
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Test-day or 305-day milk yield for genetic evaluation of Gir cattle [PDF]
Pesquisa Agropecuária Brasileira, 2019 : The objective of this work was to compare genetic evaluations of milk yield in the Gir breed, in terms of breeding values and their accuracy, using a random regression model applied to test-day records or the traditional model (TM) applied to estimates
Rodrigo Junqueira Pereira +5 more
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