Results 21 to 30 of about 81,652 (368)

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

Associations between genomic merit for daughter pregnancy rate of Holstein cows and metabolites postpartum and estrus characteristics.

open access: yesJournal of Dairy Science, 2020
Genetic selection of Holstein cattle in the past 2 decades has seen an increased attention to fertility traits. Our hypotheses were that genomic merit for daughter pregnancy rate (GDPR) is positively associated with metabolic responses, hazard of estrus,
R. Chebel, A. Veronese
semanticscholar   +1 more source

Evolution in reproductive tempo and investment across the Peromyscus radiation

open access: yesJournal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 339, Issue 1, Page 13-27, January 1, 2023., 2023
In this review, we summarize diversity among Peromyscus species and populations in a number of reproductive traits. including litter size. We examine associations with environmental variation (map, right). We also use a large dataset compiled from lab‐held colonies (violin ploots, right) of Peromyscus to test for species‐ and population‐level ...
Kathryn Wilsterman, Kirksey Cunningham
wiley   +1 more source

The effects of endocrine‐disrupting chemicals on ovarian‐ and ovulation‐related fertility outcomes

open access: yesMolecular Reproduction and Development, Volume 89, Issue 12, Page 608-631, December 2022., 2022
Abstract Exposure to endocrine‐disrupting chemicals (EDCs) is unavoidable, which represents a public health concern given the ability of EDCs to target the ovary. However, there is a large gap in the knowledge about the impact of EDCs on ovarian function, including the process of ovulation.
Katie L. Land   +3 more
wiley   +1 more source

Pengaruh Bangsa Terhadap Parameter Performa Reproduksi Sapi Betina di Kecamatan Bringin Kabupaten Ngawi

open access: yesJurnal Ternak Tropika, 2023
Performa reproduksi merupakan hal penting dalam produktivitas ternak sapi potong. Tujuan penelitian adalah untuk mengetahui pengaruh bangsa terhadap parameter performa reproduksi sapi betina di Kecamatan Bringin, Kabupaten Ngawi.
Anggita Dewi Prastyaningrum   +2 more
doaj   +1 more source

Induction of lactational estrus in organic piglet production [PDF]

open access: yes, 2009
The longer lactation period required in organic piglet producing herds reduces the potential number of produced litters per sow per year compared with that of conventional production.
Hermansen, J.E., Kongsted, A.G.
core   +1 more source

Estrous behavior in dairy cows: identification of underlying mechanisms and gene functions [PDF]

open access: yes, 2010
Selection in dairy cattle for a higher milk yield has coincided with declined fertility. One of the factors is reduced expression of estrous behavior. Changes in systems that regulate the estrous behavior could be manifested by altered gene expression ...
Beerda, B.   +3 more
core   +2 more sources

Inseminations at Estrus Induced by Presynchronization Before Application of Synchronized Estrus and Ovulation [PDF]

open access: yesJournal of Dairy Science, 2005
A controlled field study examined conception rates after 2 timed artificial insemination (TAI) breeding protocols conducted on 2 commercial dairy farms. Estrous cycles in postpartum lactating cows were presynchronized with 2 injections of PGF(2alpha) given 14 d apart (Pre-synch) and then, after 12 d, the standard Ovsynch protocol (injection of GnRH 7 d
A.P. Phatak, Jeffrey S. Stevenson
openaire   +3 more sources

Stimulasi Laser sebagai Alternatif untuk Induksi Estrus pada Kambing Bligon (Laser Stimulation as an Alternative for Estrus Induction on Bligon Goats)

open access: yesBuletin Peternakan, 2012
Reproduction is a very important factor in maintaining livestock productivity. For better reproductivity, estrus induction is one of very important ways to be performed.
Sigit Bintara
doaj   +1 more source

Effect of omega‐3 polyunsaturated fatty acid supplementation on oxidative stress parameters and sex hormone levels of modern genotype sows

open access: yesVeterinary Medicine and Science, Volume 9, Issue 1, Page 191-202, January 2023., 2023
In this study, we supplemented the diet of breeding sows either with omega‐6 (control) or omega‐3 (experimental) polyunsaturated fatty acids and examined their effects on the antioxidant system and hormone levels of the animals. In the blood levels of molecules indicating oxidative stress we experienced slight changes, but the feeding of omega‐3 fatty ...
Róbert Roszkos   +4 more
wiley   +1 more source

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