Results 1 to 10 of about 2,034,692 (267)

Animal models with group-specific additive genetic variances: extending genetic group models. [PDF]

Genet Sel Evol, 2019
Abstract 1. The animal model is a key tool in quantitative genetics and has been used extensively to estimate fundamental parameters, such as additive genetic variance, heritability, or inbreeding effects. An implicit assumption of animal models is that all founder
Muff S, Niskanen AK, Saatoglu D, Keller LF, Jensen H.   +4 more
europepmc   +10 more sources

Effect of genotype and egg weight on hatchability properties and embryonic mortality pattern of native chicken populations

Poultry Science, 2022
: Fertility and hatchability are 2 major parameters that highly influence the reproductive performance of chicken breeds. The objective of this study is to investigate how the genetic background of chickens affects the aspects of fertility, hatchability,
Moataz Fathi, Osama Abou-Emera, Ibrahim Al-Homidan, Ahmed Galal, Gamal Rayan   +4 more
doaj   +1 more source

The effects of cow genetic group on the density of raw whole milk

Irish Journal of Agricultural and Food Research, 2021
The density of milk is dependent upon various factors including temperature, processing conditions, and animal breed. This study evaluated the effect of different cow genetic groups, Jersey, elite Holstein Friesians (EHF), and national average Holstein ...
P. Parmar, N. Lopez-Villalobos, J.T. Tobin, E. Murphy, F. Buckley, A. McDonagh, J.A. O’Mahony, S.V. Crowley, A.L. Kelly, L. Shalloo   +9 more
doaj   +1 more source

Productive characteristics in dairy buffalo (Bubalus bubalis) in the Eastern Amazon [PDF]

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2020
The objective of this study was to determine factors affecting phenotypic characteristics related to milk production and reproductive efficiency of dairy buffalo.
L.C. Marques, A.S. Matos, J.S. Costa, C.S. Silva, R.N.C. Camargo Júnior, C. McManus, V. Peripolli, C.V. Araújo, M.M.M. Laureano, R.L. Sales, J.R.F. Marques   +10 more
doaj   +1 more source

Genetics of Group A Streptococci

Microbiology Spectrum, 2019
ABSTRACT Streptococcus pyogenes (group A streptococcus) is remarkable in terms of the large number of diseases it can cause in humans and for the large number of streptococcal factors that have been identified as potential virulence determinants for these diseases.
Cho, Kyu Hong, Port, Gary C, Caparon, Michael   +2 more
openaire   +5 more sources

Unraveling the Basis of Neonicotinoid Resistance in Whitefly Species Complex: Role of Endosymbiotic Bacteria and Insecticide Resistance Genes

Frontiers in Microbiology, 2022
Bemisia tabaci (whitefly) is one of the most detrimental agricultural insect pests and vectors of many plant viruses distributed worldwide. Knowledge of the distribution patterns and insecticide resistance of this cryptic species is crucial for its ...
Mritunjoy Barman, Snigdha Samanta, Gouranga Upadhyaya, Himanshu Thakur, Swati Chakraborty, Arunava Samanta, Jayanta Tarafdar   +6 more
doaj   +1 more source

Estudo da subdivisão genética da raça Mangalarga Marchador Study on genetic subdivision of the Mangalarga Marchador horse breed

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2005
Foram analisadas as informações de 233.214 animais inscritos no arquivo zootécnico da Associação Brasileira dos Criadores do Cavalo Mangalarga Marchador, descendentes de 16 ancestrais com contribuição genética mínima de até 1% para a população atual ...
M.D. Costa, J.A.G. Bergmann, A.S.C. Resende, C.G. Fonseca, F.J.C. Faria   +4 more
doaj   +1 more source

Análise de custos de diferentes grupos genéticos de bovinos de corte terminados em confinamento Cost analyses on different beef cattle genetic groups finished in feedlot condition

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2004
O desempenho de 149 animais, machos inteiros, confinados por períodos variáveis de acordo com acabamento de carcaça, foi utilizado para avaliar a eficiência econômica dos grupos genéticos Nelore sobreano, Nelore desmamado, ½ Valdostana ½ Nelore, ½ ...
I.C. Ferreira, M.A. Silva, R.P. Reis, K. Euclides Filho, G.R. Figueiredo   +4 more
doaj   +1 more source

Avaliação técnica e econômica de diferentes grupos genéticos de bovinos de corte machos superprecoces e do sistema de produção em confinamento Technical and economic evaluations of different genetic groups of yearling beef cattle males and of the feedlot production system

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2009
Avaliaram-se as variáveis técnicas e econômicas do sistema de produção em confinamento de 88 animais superprecoces (sete meses de idade) pertencentes a três grupos genéticos, com 23 animais Charolês x Nelore, 26 Red Angus x Nelore e 39 Abeerden Angus x ...
I.C. Ferreira, M.A. Silva, F .A. Barbosa, A.D.F. Carvalho, G.S.S. Correa, A.B. Fridrich, J.E.R. Souza   +6 more
doaj   +1 more source

EFFECT OF GENETIC GROUP AND OIL SOURCE ON THE PERFORMANCE OF LAYING QUAIL [PDF]

Mesopotamia Journal of Agriculture, 2017
This study was conducted to evaluate the productive performance (Production period) of three genetic groups different with feather color White , Black and Desert when fed three diets with 3% from different oil sources compared with control diet (T1 ...
M. AL-Neemy
doaj   +1 more source