Results 21 to 30 of about 6,503,587 (307)

Population demography of high arctic caribou on Banks and Melville Islands

Rangifer, 2003
Caribou numbers, Rangifer tarandus pearyi, (excluding calves) on Banks Island were estimated (standard error of the estimate) at 1005 (SE±133) in 1992, 709 (SE±128) in 1994 and 436 (SE±71) in 1998; no paired estimates were different (Ptwo-year-old ...
Nicholas C. Larter, John A. Nagy
doaj   +1 more source

Calf health from birth to weaning. I. General aspects of disease prevention [PDF]

, 2011
peer-reviewedCalfhood diseases have a major impact on the economic viability of cattle operations. This is the first in a three part review series on calf health from birth to weaning, focusing on preventive measures.
Mee, John F, Lorenz Ingrid, Mee John F, More Simon J, Ingrid Lorenz, John F Mee, Mee, John F., Earley Bernadette, Lorenz, Ingrid, More, Simon J, Bernadette Earley, Earley, Bernadette, Simon J More, et al.   +13 more
core   +1 more source

Danish holsteins favor bull offspring: biased milk production as a function of fetal sex, and calving difficulty. [PDF]

PLoS ONE, 2015
In a previous study from 2014 it was found that US Holstein cows that gave birth to heifer calves produced more milk than cows having bull calves. We wanted to assess whether this is also true for Danish cattle.
Kaare Græsbøll, Carsten Kirkeby, Søren Saxmose Nielsen, Lasse Engbo Christiansen   +3 more
doaj   +1 more source

Calf health from birth to weaning. III. Housing and management of calf pneumonia [PDF]

, 2011
peer-reviewedCalfhood diseases have a major impact on the economic viability of cattle operations. A three part review series has been developed focusing on calf health from birth to weaning.
Gilmore, J. (John), Kennedy, Emer, Hogan Ian, Lorenz Ingrid, Gilmore, John, Ian Hogan, More Simon J, Ingrid Lorenz, Hogan, Ian, Earley Bernadette, Lorenz, Ingrid, Gilmore John, Kennedy Emer, More, Simon J, Bernadette Earley, John Gilmore, Earley, Bernadette, Simon J More, Emer Kennedy, et al.   +19 more
core   +1 more source

How neonatal diet affects the long-term development of rumination behavior, rumen fermentation and feed digestion in dairy calves fed a high milk level?

Animal Nutrition
This study was to investigate growth performance, rumination development, rumen fermentation and feed digestion in young calves provided high volumes (about 20% of calf birth weight) of milk with or without forage inclusion and how these parameters ...
Jianxin Xiao, Tianyu Chen, Rong Peng, Gibson M. Alugongo, Hui Yang, Shuai Liu, Yulin Ma, Jingjun Wang, Shengli Li, Zhijun Cao   +9 more
doaj   +1 more source

ECONOMICS ANALYSIS OF OPTIMAL MILK PRODUCTION IN SMALL-SCALE DAIRY FARMING IN YOGYAKARTA, INDONESIA

JEJAK: Jurnal Ekonomi dan Kebijakan, 2015
Dairy farm, which produces calf and milk jointly, is expected to raise household’s income in rural areas where potential resources are available. This study aims at examing the optimal production of milk and calf by estimating a relationship between both
Himawan Arif, Yanuar Rachmansyah
doaj   +1 more source

A conceptual model of cow-calf systems functioning on native grasslands in a subtropical region

Animal, 2023
Cow-calf systems utilise grazing of native grasslands for beef cattle propagation and constitute the principal livestock activity in the Pampas and Campos areas.
I. Paparamborda, S. Dogliotti, P. Soca, W.A.H. Rossing   +3 more
doaj   +1 more source

Epidemiology of bovine colostrum production in New York Holstein herds: Cow, management, and environmental factors

Journal of Dairy Science, 2023
: Adequate supply of high-quality colostrum is essential for calf health. Colostrum production, at first milking, varies between animals and seasons, but herd-level and management associations with colostrum production have not been well described.
T.A. Westhoff, S.J. Womack, T.R. Overton, C.M. Ryan, S. Mann   +4 more
doaj   +1 more source

Genetic parameters of colostrum and calf serum antibodies in Swedish dairy cattle

Genetics Selection Evolution, 2022
Background A sufficient IgG content in the colostrum is essential for the newborn calf, as it provides passive immunity which substantially affects the probability of survival during rearing.
Juan Cordero-Solorzano, Dirk-Jan de Koning, Madeleine Tråvén, Therese de Haan, Mathilde Jouffroy, Andrea Larsson, Aline Myrthe, Joop A. J. Arts, Henk K. Parmentier, Henk Bovenhuis, Jonas Johansson Wensman   +10 more
doaj   +1 more source

Nutrient/TOR signaling controls adipose mitochondrial transcription factor A (TFAM) to regulate organismal growth in Drosophila

FEBS Letters, EarlyView.
Animals must match their growth rate to available nutrients. We show that in Drosophila larvae, the nutrient‐sensing TOR kinase controls growth by regulating levels of TFAM, a key regulator of mitochondrial function, in the adipose tissue. When nutrients are abundant, high TOR activity suppresses TFAM, lowering mitochondrial bioenergetic activity and ...
Shrivani Sriskanthadevan‐Pirahas, Shahoon Khan, Abhishek Sharma, Byoungchun Lee, Savraj S. Grewal   +4 more
wiley   +1 more source