Results 131 to 140 of about 93,137 (288)

Genetic Relationships Among Resilience, Fertility and Milk Production Traits in Crossbred Dairy Cows Performing in Sub‐Saharan Africa

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Change in climate over the past years and its impact on the environment have necessitated the inclusion of resilience traits in the breeding objectives of dairy cattle. However, the relationship between resilience and other traits of economic importance in dairy production is currently not well known. This study examined the genetic parameters
R. D. Oloo, R. Mrode, C. C. Ekine‐Dzivenu, J. M. K. Ojango, J. Bennewitz, G. Gebreyohanes, A. M. Okeyo, M. G. G. Chagunda   +7 more
wiley   +1 more source

An Increase in Male Recombination Rate With Age in Dairy Cattle Is Heritable and Polygenic

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Meiotic recombination is an essential process for shuffling genetic diversity in sexually reproducing organisms, can vary within and between individuals in response to intrinsic and extrinsic factors, and can be heritable. Interestingly, recombination rate has been found to vary with age in some species, but to date, there have been no ...
Evelyn Jade, Mathew D. Littlejohn, Katie Eketone, Richard J. Spelman, Jessica Stapley, Anna W. Santure   +5 more
wiley   +1 more source

Nutritional and productive performance of purebred Nellore heifers and crossed with Brangus and Braford finished in a feedlot system

Anais da Academia Brasileira de Ciências
This study evaluated the nutritional and productive performance of Nellore purebred heifers and crossbred Brangus x Nellore (BGNE) and Braford x Nellore (BFNE) in a feedlot system.
FELIPE C. BENTO, KAMILA A.K. DE MORAES, CLÁUDIO VIEIRA DE ARAUJO, VINÍCIUS AUGUSTO MACHADO, NATAN L. CECCONELLO, LORRAYNE O. DA CUNHA, JARLIANE DO NASCIMENTO SOUSA, KARINE R. DOS SANTOS NAVES, JULIANA C. ORTELAM, LEANDRO F. MORENO, EDUARDO HENRIQUE B.K. DE MORAES   +10 more
doaj   +1 more source

Genetic Parameters of Resilience Indicators Across Growth in Beef Heifers and Their Associations With Weight, Reproduction, Calf Performance and Pre‐Weaning Survival

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT In tropical extensive beef cattle systems, heifers raised on pasture are exposed to various environmental challenges that affect their growth and reproductive performance during the first breeding. Resilience indicators derived from deviations in longitudinal traits can quantify the magnitude of these challenges and the ability of an animal to
Gustavo R. D. Rodrigues, Júlia P. S. Valente, Vanessa T. Rezende, Luis F. C. Araújo, João B. Silva Neto, Lúcio F. M. Mota, Mário L. Santana, Roberta C. Canesin, Sarah F. M. Bonilha, Lucia G. Albuquerque, Maria E. Z. Mercadante, Joslaine N. S. G. Cyrillo   +11 more
wiley   +1 more source

The effects of variations in respiratory activity and in the skin temperatures of the ears on the temperature of the blood in the external jugular vein of the ox (Bos taurus) [PDF]

, 1962
D. L. Ingram, G. C. Whittow
openalex   +1 more source

Differences in Milk Production Efficiency and Physiology Between Lactating Holstein Cows and Yaks Born and Kept at About 4000 m of Altitude When Fed the Same Diet

Journal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT Yaks (Bos grunniens) have developed numerous mechanisms to cope with hypoxic environments. Still, as their milk yield is low, the use of production systems building on dairy breeds at high altitude might increase efficiency, but this has not yet been explored.
Xinyu Zhang, Michael Kreuzer, Mutian Niu, Shengli Li   +3 more
wiley   +1 more source

The Pre-Natal Development of Skin and Hair in Cattle II. Bos Indicus l. X B. Taurus l. [PDF]

, 1960
AG Lyne, Margaret J Heideman
openalex   +1 more source

Multi‐scalar habitat selection unveils ecological domains in wolves when selecting rendezvous sites

Journal of Zoology, EarlyView.
Although habitat generalists, wolves may become particularly choosy when locating homesites (i.e., dens and rendezvous sites) especially in human‐modified landscapes. Using a multiscale approach, we investigated rendezvous sites (RV) selection in a historical stronghold of wolves in central Italy. Human infrastructure (i.e.
S. Droghei, M. Falco, P. Ciucci
wiley   +1 more source

Bisoniana XI. Weitere Untersuchungen über Kreuzungen des Wisents, Bison bonasus (Linnaeus, 1758) mit dem Hausrind, Bos taurus dom . Linnaeus, 1758 [PDF]

, 1963
Małgorzata Krasińska
openalex   +1 more source

Bos taurus Linnaeus 1758

, 1993
Bos taurus Linnaeus, 1758. Syst. Nat., 10th ed., 1:71. TYPE LOCALITY: Sweden, Upsala according to Thomas (1911a); but Linnaeus (1758) cited "Habitat in Poloniae", possibly refering to the Aurochs, which he recognized as conspecific with domestic cattle.
openaire   +1 more source