Results 61 to 70 of about 74,741 (242)

The Heterogeneous Impact of Children on Maternal Employment: Evidence From East and West Germany

Economics of Transition and Institutional Change, EarlyView.
ABSTRACT This study investigates the causal effect of fertility on female labour market outcomes in East and West Germany. We use twin births as an exogenous variation for family size. Our results suggest a negative relationship between the number of children and maternal labour market outcomes.
Johannes Köckeis, Sven Stöwhase
wiley   +1 more source

Sow body condition at weaning and reproduction performance in organic piglet production [PDF]

, 2009
The objective was to investigate the variation in backfat at weaning and its relations to reproduction results in organic sow herds in Denmark. The study included eight herds and 573 sows.
A. G. Kongsted, Alonso-Spilsbury M., Andersen L., Bonde M., Grandinson K., Guy J. H., Han I. K., Heyer A., J. E. Hermansen, Kongsted A. G., Lauritsen H. B., Oldigs V. B., Reilly J. D., Rydhmer L., Tummaruk P., Wallenbeck A.   +15 more
core   +1 more source

Single‐Step Genomic Predictions for Growth and Carcass Traits in Nordic Charolais and Hereford Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT In order to investigate the applicability and efficiency of genomic selection for growth and carcass traits in Nordic beef cattle, single‐step genomic BLUP (ssGBLUP) was applied in 4321 Charolais and 4532 Hereford animals with information on approximately 43,000 SNPs each.
Anahit Nazari‐Ghadikolaei, Freddy Fikse, Susanne Eriksson   +2 more
wiley   +1 more source

Different estrous induction methods during the non-breeding season in Kivircik ewes

Veterinární Medicína, 2006
The efficiency of medroxyprogesterone acetate (MAP) sponges in combination with either pregnant mare serum gonadotrophin (PMSG) or cloprostenol (PGF2α) for inducing and synchronizing the estrous cycle in non-lactating Kivircik ewes was investigated ...
I. Dogan, Z. Nur
doaj   +1 more source

The unbearable (financial) burdens of parenting

The British Journal of Sociology, EarlyView.
Alya Guseva
wiley   +1 more source

Genetic Parameter Estimation for Pregnancy Loss and Their Association With Reproductive and Growth Traits in Brahman Cattle Under Extensive Tropical Conditions

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT This study estimated genetic parameters for pregnancy loss (PL) in Brahman cattle and evaluated the genetic correlation of PL with growth and reproductive traits using both the pedigree relationship matrix (A) and pedigree plus genomic relationship matrix (H). Data were collected from two herds in Bolivia, focusing on three age groups: heifers,
Daniel Cardona‐Cifuentes, Lucia G. de Albuquerque, Milagros Arias, Sindy Caivio‐Nasner, Luis Camaripano, Luis G. Gonzalez‐Herrera, Patricia I. Schmidt, Fernando Baldi   +7 more
wiley   +1 more source

COMPARISON OF hCG AND GnRH FOR SYNCHRONIZATION OF THE FOLLICULAR WAVE IN SAANEN GOATS DURING THE BREEDING SEASON

Slovenian Veterinary Research
This study aimed to compare the effects of a single dose of GnRH or hCG administered at the beginning of the short-term oestrus synchronization protocol on ≥4 mm diameter follicles in Saanen goats during the breeding season.
Ibrahim Dogan, Mehmed Berk Toker, Ahmet Aktar, Mehmet Melih Yilmaz, Oguzhan Huraydin, Duygu Udum   +5 more
doaj   +1 more source

Application of Genomic Random Regression Models for Genetic Parameter Estimations of Female Fertility Traits in Different Parities in German Holsteins

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT The aim of the present study was to infer genetic (co) variance components and to estimate parity‐specific breeding values for the female fertility traits non‐return rate after 56 days, the interval from calving to first service and days open by applying random regression models on a time‐dependent parity scale. In this regard, we considered a
Sina Sakhaei‐far, Tong Yin, Sven König   +2 more
wiley   +1 more source

Assessing the Value of Coordinated Sire Genetics in a Synchronized AI Program [PDF]

Synchronized artificial insemination was used to inseminate cows using different types of sire genetics, including low-accuracy, calving-ease, and high-accuracy. These three calf sire groups were compared to calves born to cows bred using natural service.
Haden, Kent, John, Mike, Kerley, Monty S., Parcell, Joseph L., Patterson, David J., Schaefer, Daniel   +5 more
core   +1 more source

Genomic Analysis of Inbreeding Depression on Productive Traits in Rubia Galega Beef Cattle Breed

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT In autochthonous livestock breeds with small populations, such as the Rubia Galega from Galicia (Spain), mating between relatives is common and can lead to inbreeding depression. Genomic inbreeding coefficients were estimated for 4984 animals using ~63,000 SNPs to assess inbreeding depression in four key traits: age at first calving (AFC) with
N. Mejuto‐Vázquez, C. Hervás‐Rivero, R. Rodríguez‐Bermúdez, D. López‐Carbonell, M. Hermida, P. Martínez, L. Varona   +6 more
wiley   +1 more source