E. Ezra

Different goals, common ground: A global perspective on dairy breeding objectives

D.P. Berry, F. Miglior, C. Schmidtmann, K. Byskov et autres

A global comparison of dairy cow breeding objectives provides valuable insight into areas of convergence and divergence, helping identify populations with compatible breeding goals for sourcing germplasm to strengthen domestic genetic improvement programs. The objective of this study was primarily to compare …

ie, ca, dk, fr, it, nl, us, ch, gb, au, be, Afrique du Sud, es, si, il, hu, pl, jp, uy (code pays fourni par la source)

Genetic analysis of resilience in Israeli Holstein cattle based on first parity daily rumination and milk production records

J.I. Weller, E. Ezra

Resilience in farm animals was proposed as an indicator trait for health and robustness. One approach is to analyze the variance and autocorrelation of daily milk production. Daily rumination time is a useful indicator of health status. Recently developed rumination monitoring tags …

il (code pays fourni par la source)

Different Goals, Common Ground: A Global Perspective on Dairy Breeding Objectives

Donagh Berry, F. Miglior, Christin Schmidtmann, Kevin Byskov et autres

ie, ca, no, dk, jp, it, co, ch, gb, us, Algérie, es, si, cz, hu, in, ec, uy, cl (code pays fourni par la source)

High-frequency data reveal limits of adaptation to heat in animal agriculture

Claire Palandri, Eyal Frank, Ayal Kimhi, Yaniv Lavon et autres

Understanding the impacts of climate change on food systems is a key research priority, but important sectors and the scope for adaptation remain underexplored. Here, we analyze more than 320 million daily observations of milk production across 12 years, paired with survey …

us, il (code pays fourni par la source)

Genetic analysis of body condition score in the Israeli Holstein dairy cattle population

J.I. Weller, E. Ezra

The objectives of the current study were to estimate genetic parameters of BCS as a function of lactation stage to investigate the genetic relationship between BCS, metabolic disease traits, and other traits under selection in Israel, as well as to consider the …

il (code pays fourni par la source)

Single-step genomic BLUP (ssGBLUP) effectively models small cattle populations: lessons from the Israeli-Holstein Herdbook

Arie Yehuda Curzon, E. Ezra, J.I. Weller, Eyal Seroussi et autres

BACKGROUND: Routine genomic-estimated breeding values (gEBVs) are computed for the Israeli dairy cattle population by a two-step methodology in combination with the much larger Dutch population. Only sire genotypes are included. This work evaluated the contribution of cow genotypes obtained from the …

il, au (code pays fourni par la source)

Genetic analysis of rumination time based on an analysis of 77,697 Israeli dairy cows

J.I. Weller, E. Ezra

Reduction of methane emission may become necessary for sustainable milk production. Several studies indicate a relationship between rumination time and the level of methane emission. The objectives of the current study were to estimate environmental factors affecting daily rumination time in high-yielding …

il (code pays fourni par la source)

Estimating the Effect of the Kappa Casein Genotype on Milk Coagulation Properties in Israeli Holstein Cows

Yaniv Lavon, J.I. Weller, Yoel Zeron, E. Ezra

In Israel, about 26% of produced milk is used to produce hard cheeses and 29% for soft cheeses. Milk with preferred coagulation properties requires a shorter coagulation time and yields a higher curd firmness than milk with inferior coagulation properties. Studies have …

Economic Aspects of Bovine Ephemeral Fever (BEF) Outbreaks in Dairy Cattle Herds

Yaniv Lavon, E. Ezra, Orly Friedgut, Adi Behar

biting midges). While the dispersal of arboviral diseases such as bovine ephemeral fever (BEF) into naive areas is often the result of globalization and animal movement, the endemization and local outbreaks of these diseases are mainly influenced by environmental changes. Climate change …

il (code pays fourni par la source)

Genetic and Genomic Analysis of Cow Mortality in the Israeli Holstein Population

J.I. Weller, E. Ezra, Eyal Seroussi, Moran Gershoni

"Livability" was defined as the inverse of the probability of death. The objectives of this study were to estimate the heritability, genetic and phenotypic trends for the livability of Israeli Holstein cows; estimate the genetic and environmental correlations between livability and the …

il (code pays fourni par la source)

Breeding Dairy Cattle for Female Fertility and Production in the Age of Genomics

J.I. Weller, Moran Gershoni, E. Ezra

Phenotypic and genetic changes for female fertility and production traits in the Israeli Holstein population over the last three decades were studied in order to determine if long term selection has resulted in reduced heritability and negative genetic correlations. Annual means for …

il (code pays fourni par la source)

Genetic and genomic analysis of age at first insemination in Israeli dairy cattle

J.I. Weller, E. Ezra, Moran Gershoni

We performed a genetic analysis of age at first insemination, including estimation of the heritability and genetic correlations with other economic traits, and the consequences of including this trait in the Israeli selection index. The genetic factors affecting age at first insemination …

il (code pays fourni par la source)