Results 11 to 20 of about 41,399 (301)

Artificial insemination timing on pregnancy rate of Holstein cows using an automated activity monitoring [PDF]

open access: yesCiência Rural, 2023
: This study evaluated the probability of pregnancy and associated factors for two times artificial inseminations (AI), 8 or 10 hours after automated activity monitoring (AAM) alarm on the first postpartum AI of 1,054 Holstein dairy cows.
Letícia Ribeiro Marques   +5 more
doaj   +1 more source

Use of protocol with prolonged proestrus with and without eCG in dual purpose dairy Holsteins cows in the Ecuadorian Amazons [PDF]

open access: yesSPERMOVA, 2020
The objective was to evaluate the effect of eCG on presence estrus, ovulation time, preovulatory follicle diameter and pregnancy rate in Holstein cows treated with a prolonged proestrus protocol in the Ecuadorian Amazon.
Manuel Ortega-Coello   +2 more
doaj   +1 more source

Intracervical Artificial Insemination using Frozen Semen of Boer buck on Pote Does at Different Times of Estrus

open access: yesOvozoa: Journal of Animal Reproduction, 2023
Pote goats are kept by the rural community in Bangkalan Regency, Madura Island, Indonesia. Estrus symptoms in goats are usually unclear, causing low fertility.
Suherni Susilowati   +4 more
doaj   +1 more source

Determination of estrus duration based on cervical mucus characteristics in Aceh cattle using camera-equipped artificial insemination endoscope

open access: yesOvozoa: Journal of Animal Reproduction, 2022
This study aimed to determine the length of the estrus period in Aceh cows based on changes in the characteristics of cervical mucus observed using a camera-equipped artificial insemination (AI) endoscope.
Dian Mulfristia   +6 more
doaj   +1 more source

Effects of subcutaneous progesterone injection as a short-time estrus synchronization protocol in ewes: a preliminary study [PDF]

open access: yesThe Iranian Journal of Veterinary Science and Technology, 2022
The present study aimed to evaluate the effect of short-time progesterone injection subcutaneously (SC) on estrus synchronization of Baluchi ewes. All ewes received one dose of PGF2α (15 mg) and then were divided into two groups.
Behnam Valizadeh   +3 more
doaj   +1 more source

Analysis of reproduction-related transcriptomes on pineal-hypothalamic-pituitary-ovarian tissues during estrus and anestrus in Tan sheep

open access: yesFrontiers in Veterinary Science, 2022
Seasonal estrus is an important factor limiting the fertility of some animals such as sheep. Promoting estrus in the anestrus season is one of the major ways in improving the fecundity of seasonally breeding animals.
Shihao Wei   +9 more
doaj   +1 more source

The Effect of Synchronizing with the PGF2α hormone on the Estrus Activity of Madura Cows [PDF]

open access: yesBIO Web of Conferences
This research aims to determine the biological response of administering the PGF2α hormone to the estrous activity of Madurese cows. This research method uses two observation techniques, namely estrus synchronization by administering the PGF2α hormone ...
Luthfi Muchamad   +4 more
doaj   +1 more source

Dominant Components of the Giant Panda Seminal Plasma Metabolome, Characterized by 1H-NMR Spectroscopy

open access: yesAnimals, 2022
As an assisted breeding technique, artificial insemination has become the main effective practical approach in the captive breeding programs of giant panda worldwide.
Chenglin Zhu   +10 more
doaj   +1 more source

Faculty of Veterinary Medicine, University of Forestry, Sofia, Bulgaria [PDF]

open access: yesBulgarian Journal of Veterinary Medicine, 2020
A characteristic feature of water buffalo heifers is that they approach breeding maturity later than bovine heifers. From a physiological and endocrinological view, this is related to a later puberty, which affects the overall reproductive performance of
V. Manov, V. Planski, G. Popov
doaj   +1 more source

Analysis of cow sweat volatile chemical compounds in gas chromatography mass spectrometry (GC-MS) device and their importance in heat detection [PDF]

open access: yesBIO Web of Conferences
Detection of estrus is very important for the profitability of dairy cattle. Because one of the main goals of cattle breeding is for each cow to give birth to a healthy calf a year.
Anitaş Özgül, Göncü Serap
doaj   +1 more source

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