Results 41 to 50 of about 148,897 (216)
Live Animal Ultrasound Information as a Decision Tool in Replacement Beef Heifer Programs [PDF]
Real-time ultrasound information taken on beef heifers prior to backgrounding is used to develop a logit model to aid heifer retention decisions. The value of ultrasound data is calculated as the difference in certainty equivalents between a decision ...
Vann, Rhonda C. +3 more
core +2 more sources
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT Functional longevity (FL) is a complex trait that integrates many attributes directly contributing to the successful retention and productivity of a cow within the herd. Consequently, improving FL in beef cattle increases herd profitability. This study aimed to estimate the genetic associations between two alternative FL definitions and traits
Dalila Ribeiro dos Santos +7 more
wiley +1 more source
Journal of Animal Science and Biotechnology, 2023 Background In beef cattle, more than 50% of the energy input to produce a unit of beef is consumed by the female that produced the calf. Development of genomic tools to identify females with high genetic merit for reproductive function could increase the
Quinn A. Hoorn +5 more
doaj +1 more source
Fertility and parturition parameters in beef type heifers
Tropical Animal Health and ProductionAbstract This study compared fertility and parturition parameters in Limousin (L) and Charolais (C) heifers to identify the breed most suitable for beef production. A total of 234 L and 76 C Hungarian-origin heifers, aged 9–11 months, were managed under standardized housing and feeding conditions at Dogan Farm.
Ayşe Uysal +6 more
openaire +4 more sources
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT Mashona cattle are an indigenous Sanga cattle breed from Zimbabwe, used for beef production and known for their mothering ability and adaptation to harsh tropical environments. Growth and reproductive traits are key determinants of efficiency in beef production.
Maxman Gomo +3 more
wiley +1 more source
Maternal Productivity in Beef Cattle: The impact on the female herd of genetic selection for a divergence in fatness or feed efficiency [PDF]
, 2010 Beef cows, particularly as part of seed stock and cow/calf enterprises, are farmed extensively in temperate environments in southern Australia. The fundamental premise of a productive beef enterprise is a calving interval of 365 days. However, production
Laurence, M., Laurence, Michael
core
AnimalsThis study evaluated enteric methane (CH₄) emissions, dry matter intake (DMI), and performance in rearing beef heifers fed either a Guinea-grass-only diet (0WCS) or Guinea grass supplemented with whole cottonseed (WCS) at 0.5% of body weight (BW). Twenty-
Olegario Hernández +8 more
doaj +1 more source
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT The Girolando breed, a cross between Holstein (Bos taurus) and Gir (Bos indicus), is the primary choice for dairy production in Brazilian tropical regions, as it combines high productive potential with adaptation to the tropical environment.
Laura B. da C. Pereira +6 more
wiley +1 more source
Performance and parasitosis in heifers grazing mixed with sows [PDF]
, 2000 The aim of the study was to investigate the effect of mixed grazing with first season heifers and pregnant sows on animal performance, gastro-intestinal helminths, pasture quality and sward structure during three grazing seasons.
Monrad, J. +3 more
core +1 more source
Targeting ADG of Developing Replacement Heifers Using Age and Body Weight
EDIS, 2021 This publication was prepared to assist beef cattle producers and livestock agents in determining the target ADG and management system to develop replacement beef heifers in Florida. Written by John Arthington and Philipe Moriel, and published by the UF/
John Arthington, Philipe Moriel
doaj +1 more source