Induction of lactational estrus in organic piglet production [PDF]
, 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.
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Estrous behavior in dairy cows: identification of underlying mechanisms and gene functions [PDF]
, 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
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Artificial insemination timing on pregnancy rate of Holstein cows using an automated activity monitoring [PDF]
Ciência 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
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Use of protocol with prolonged proestrus with and without eCG in dual purpose dairy Holsteins cows in the Ecuadorian Amazons [PDF]
SPERMOVA, 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
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Effects of subcutaneous progesterone injection as a short-time estrus synchronization protocol in ewes: a preliminary study [PDF]
The 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
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The Effect of Synchronizing with the PGF2α hormone on the Estrus Activity of Madura Cows [PDF]
BIO Web of ConferencesThis 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
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Tropical and Subtropical Agroecosystems, 2023 Background: Genetic improvement in the sheep species focuses on increasing the number of offspring per sheep. Heritable characteristics such as ovulation rate, fertility, and prolificacy are desirable.
Dante J. Hernández-Rubio +5 more
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Immunolocalization of steroidogenic enzymes in the vaginal mucous of Galea spixii during the estrous cycle. [PDF]
, 2017 BackgroundThe synthesis of sex steroids is controlled by several enzymes such as17α-hydroxylase cytochrome P450 (P450c17) catalyzing androgen synthesis and aromatase cytochrome P450 (P450arom) catalyzing estrogen synthesis, both of which must complex ...
Assis Neto, Antônio Chaves de +5 more
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Analysis of cow sweat volatile chemical compounds in gas chromatography mass spectrometry (GC-MS) device and their importance in heat detection [PDF]
BIO Web of ConferencesDetection 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
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Substance P regulates puberty onset and fertility in the female mouse [PDF]
, 2015 Puberty is a tightly regulated process that leads to reproductive capacity. Kiss1 neurons are crucial in this process by stimulating GnRH, yet how Kiss1 neurons are regulated remains unknown. Substance P (SP), an important neuropeptide in pain perception,
Carroll, R.S. +7 more
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