Results 21 to 30 of about 93,329 (316)

Effect of Anovulation and Subclinical Endometritis on Fertility of Lactating Dairy Cows: Why Are Dairy Cows Not Getting Pregnant—Lack of Cyclicity, Uterine Disease, or Both?

open access: yesEDIS, 2014
Virtually all Holstein dairy cows have the first wave of follicle growth starting two weeks postpartum, with about 30% of these cows ovulating within 21 days in milk.
Klibs N. Galvão, Achilles Vieira-Neto
doaj   +5 more sources

A dataset of human-inedible byproduct feeds consumed by dairy cows in the United States

open access: yesData in Brief, 2021
Dairy cows convert human-indigestible forages and byproducts nutrients into edible food for humans [1]. Because of microbiota located in their rumen, dairy cows can digest fibrous forages and feeds which are not exploited by humans and monogastric ...
Mary Beth de Ondarza, Juan M. Tricarico
doaj   +1 more source

Major Nutritional Metabolic Alterations Influencing the Reproductive System of Postpartum Dairy Cows

open access: yesMetabolites, 2022
Early successful conception of postpartum dairy cows is crucial in determining the optimum reproductive efficiency and profitability in modern dairy farming.
Abdul Sammad   +7 more
doaj   +1 more source

A focus group study exploring dairy farmers’ perspectives of cull cow management in Ontario, Canada

open access: yesFrontiers in Veterinary Science, 2023
IntroductionMaintaining the welfare of cull dairy cows from the farm to slaughter is an ongoing challenge for the dairy industry. Recent research suggests that some cull dairy cows within the marketing system are in physical states that are below ...
Joanne Marshall   +12 more
doaj   +1 more source

Regulation of Milk Protein Synthesis by Free and Peptide-Bound Amino Acids in Dairy Cows

open access: yesBiology, 2021
Milk protein (MP) synthesis in the mammary gland of dairy cows is a complex biological process. As the substrates for protein synthesis, amino acids (AAs) are the most important nutrients for milk synthesis.
Miaomiao Zhou   +3 more
doaj   +1 more source

Plasma metabolite changes in anestrous dairy cows with negative energy balance identified using 1H NMR technology

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2021
The objective of the present study was to investigate the different plasma metabolites between anestrus and estrus postpartum dairy cows and to provide a theoretical basis for prevention of anestrus in dairy farm cows.
F. Zhang   +7 more
doaj   +1 more source

Serum lipolysaccharide concentrations of dairy cows in pre- and postpartum period and with subclinical laminitis [PDF]

open access: yesJournal of Central European Agriculture
The aim of this study was to compare the LPS blood concentrations and metabolic status in the peripartum period and in the late lactation phase in dairy cows.
Pavel Gomulec, Pavol Mudroň
doaj   +1 more source

Progress on oxidative stress and natural phytogenic antioxidants in dairy cows

open access: yes浙江大学学报. 农业与生命科学版, 2018
Oxidative stress has a negative impact on production performance, reproductive performance and disease resistance of dairy cows. It is particularly serious for high-producing dairy cows.
LI Yongxin   +3 more
doaj   +1 more source

Possible causes and treatment strategies for the estrus and ovulation disorders in dairy cows

open access: yesThe Journal of Reproduction and Development, 2022
The reproductive performance of dairy cows has declined, along with an increase in their milk yield. First-service conception rates in lactating dairy cows are often lower than 50%.
Natsumi ENDO
doaj   +1 more source

Use of system fleckscore in the evaluation of body conformation in Slovak Spotted dairy cows

open access: yesActa Fytotechnica et Zootechnica, 2016
Paper is focused to use of the Fleckscore system for evaluation of main body conformation traits – body frame, musculature, feet & legs and udder in the Slovak Spotted dairy cows in the first lactations (n = 15,779), in the second lactations (n = 2,138)
Peter Strapák   +2 more
doaj   +1 more source

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