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Evaluation of Strategies to Improve the Environmental and Economic Sustainability of Cow–Calf Production Systems [PDF]

Animals, 2022
Grazing cow–calf production systems account for 60 to 70% of the greenhouse gas emissions of U.S. beef production. The objective of this analysis was to evaluate the importance of management strategies (cow maintenance energy requirements, reproductive ...
Phillip A. Lancaster, Robert L. Larson
doaj   +2 more sources

The Technical Efficiency of Beef Calf Production Systems: Evidence from a Survey in Hebei, China

Agriculture, 2022
Beef calf production is a source of sustainable development for the beef cattle industry. However, no comparative studies have reported on the technical efficiency of different beef calf production systems and their influencing factors.
Yongjie Xue, Jinling Yan, Yongfu Cui, Huifeng Zhao, Ya’nan Zhang, Changhai Ma, Haijing Zheng   +6 more
doaj   +3 more sources

Methods for estimating milk production of dairy cows with full cow-calf contact [PDF]

JDS Communications
Dairy cows with full cow-calf contact can nurse their calves and perform maternal behaviors without hindrance. Owing to the unrestricted suckling, the total milk production of the suckled cows (i.e., machine milk yield [MMY] and milk consumed by the calf)
C.L. van Zyl, A.T.M. van Knegsel, S. Agenäs, E.A.M. Bokkers   +3 more
doaj   +2 more sources

Influences on calf productivity during five decades of cow-calf grazing of northern prairie

Animal
Understanding calf weight gains from grazing rangeland ecosystems requires long-term data to disentangle influences of biophysical and animal factors, and management.
J.G.N. Irisarri, P.A. Cipriotti, L. Castro Sardiña, M. Mortenson, Justin D. Derner   +4 more
doaj   +2 more sources

The age at first consumption of forage in calves and its effect on growth and rumination in the short- and long-term

Journal of Animal Science and Biotechnology, 2023
Background Previous investigations into the effect of dietary forage on calf performance have been inconsistent, and there is a paucity of information exploring the effect of age on the growth performance and rumination of calves.
Jianxin Xiao, Tianyu Chen, Rong Peng, Gibson Maswayi Alugongo, Hui Yang, Muhammad Zahoor Khan, Shuai Liu, Yulin Ma, Jingjun Wang, Wei Wang, Yajing Wang, Shengli Li, Zhijun Cao   +12 more
doaj   +1 more source

Animal welfare index: an animal welfare evaluation of beef production farms in Ireland

Journal of Applied Animal Research, 2022
The study objective was to examine the animal welfare status of Irish beef production farms using an animal welfare index (AWI). Beef production farms (n = 105) including suckler calf-to-beef (n = 30), suckler calf/weaning/finishing (n = 63), dairy calf ...
Peter Lawrence, Mark McGee, Bernadette Earley   +2 more
doaj   +1 more source

The magnitude of calf morbidity and mortality and risk factors in smallholder farms across livestock production systems in central Ethiopia

Veterinary Medicine and Science, 2022
Background Calf morbidity and mortality are major constraints in Ethiopian cattle production that severely limit available replacement stock. Calf morbidity and mortality reports in Ethiopia mostly focus on market‐oriented dairy production systems.
Erdachew Yitagesu, Tsegaw Fentie, Nigatu Kebede, Wendi Jackson, Woutrina Smith   +4 more
doaj   +1 more source

Effect of Milk Replacer Plane of Nutrition on Intake, Weight Gain, and Skeletal Growth in Cold-Stressed Newborn Holstein Calves [PDF]

پژوهشهای تولیدات دامی, 2023
Extended Abstract Introduction and objectives: The lower limit of critical temperature for a newborn calves is between 5 (from 3 weeks and later) to 15°C (up to 3 weeks).
Hasan Rezaei, Shahryar Kargar
doaj  

Population growth, movements, and status of the Nushagak Peninsula Caribou Herd following reintroduction, 1988 - 2000

Rangifer, 2003
Barren ground caribou (Rangifer tarandus) were reintroduced to the Nushagak Peninsula, Alaska in February of 1988 after an absence of more than 100 years. Since reintroduction, herd growth and population dynamics have been monitored closely. At this time,
Gail H. Collins, Michael T. Hinkes, Andrew R. Aderman, James D. Woolington   +3 more
doaj   +1 more source