Reproduction Nutrition Development

Variation of ewe olfactory secretome during a ram effect

Paul Cann, Chrystelle Le Danvic, Chantal Porte, Didier Chesneau, Matthieu Keller and Patricia Nagnan-Le Meillour
Frontiers in Veterinary Science 9 (2023)
DOI: 10.3389/fvets.2022.1033412
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Management of Reproduction in Farm Animals: Present and Future

M. Courot and P. Volland-Nail
Biotechnology & Biotechnological Equipment 5 (3) 3 (1991)
DOI: 10.1080/13102818.1991.10818626
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Exploring differentially expressed genes in hypothalamic, pars tuberalis and pineal gland transcriptomes in different sexual behavior phenotypes in rams using RNA-Seq

Kenza Lakhssassi, María Pilar Sarto, Belén Marín, Belén Lahoz, José Folch, José Luis Alabart, Malena Serrano and Jorge Hugo Calvo
Journal of Animal Science 101 (2023)
DOI: 10.1093/jas/skac365
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Accelerated lambing achieved by a photoperiod regimen consisting of alternating 4-month sequences of long and short days applied year-round1

J. Cameron, B. Malpaux and F. W. Castonguay
Journal of Animal Science 88 (10) 3280 (2010)
DOI: 10.2527/jas.2010-2911
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Fibre growth of cashmere-bearing goats given melatonin in late autumn and winter

R. J. Mitchell, K. Betteridge, M. P. Gurnsey and R. A. S. Welch
New Zealand Journal of Agricultural Research 34 (4) 419 (1991)
DOI: 10.1080/00288233.1991.10417686
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Control of sheep and goat reproduction: Use of light and melatonin

P. Chemineau, B. Malpaux, J.A. Delgadillo, et al.
Animal Reproduction Science 30 (1-3) 157 (1992)
DOI: 10.1016/0378-4320(92)90010-B
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Ovarian activity and fertility during the first breeding season of friesland ewe lambs

S.J. Ward and H.Ll. Williams
British Veterinary Journal 149 (3) 269 (1993)
DOI: 10.1016/S0007-1935(05)80172-1
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Effect of artificial long days and/or melatonin treatment on the sexual activity of Mediterranean bucks

L.A. Zarazaga, M.C. Gatica, I. Celi, J.L. Guzmán and B. Malpaux
Small Ruminant Research 93 (2-3) 110 (2010)
DOI: 10.1016/j.smallrumres.2010.05.008
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Evaluation of melatonin and bromocryptine administration in Spanish goats

T. Wuliji, A. Litherland, A.L. Goetsch, et al.
Small Ruminant Research 49 (1) 31 (2003)
DOI: 10.1016/S0921-4488(03)00055-5
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Effect of a single subcutaneous injection of melatonin on estrous response and conception rate in goats

Sudhir Kumar and G.N. Purohit
Small Ruminant Research 82 (2-3) 152 (2009)
DOI: 10.1016/j.smallrumres.2009.02.005
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Evaluation of melatonin and bromocryptine administration in Spanish goats

T. Wuliji, A. Litherland, A.L. Goetsch, et al.
Small Ruminant Research 49 (1) 41 (2003)
DOI: 10.1016/S0921-4488(03)00056-7
See this article

Initiation of the breeding season in ewe lambs and goat kids with melatonin implants

C. Papachristoforou, A. Koumas and C. Photiou
Small Ruminant Research 73 (1-3) 122 (2007)
DOI: 10.1016/j.smallrumres.2006.12.004
See this article

Seasonal dynamics of sperm morphometric subpopulations and its association with sperm quality parameters in ram ejaculates

J.I. Martí, I.M. Aparicio, C.L.V. Leal and M. García-Herreros
Theriogenology 78 (3) 528 (2012)
DOI: 10.1016/j.theriogenology.2012.02.035
See this article

Out-of-Season Breeding in Goats

George K. Haibel
Veterinary Clinics of North America: Food Animal Practice 6 (3) 577 (1990)
DOI: 10.1016/S0749-0720(15)30833-1
See this article

Reproduction in Domestic Animals

D.R. LINDSAY
Reproduction in Domestic Animals 491 (1991)
DOI: 10.1016/B978-0-08-057109-6.50020-3
See this article

Artificial long days and daily contact with bucks induce ovarian but not oestrous activity during the non-breeding season in Mediterranean goat females

L.A. Zarazaga, M.C. Gatica, I. Celi, J.L. Guzmán and B. Malpaux
Animal Reproduction Science 125 (1-4) 81 (2011)
DOI: 10.1016/j.anireprosci.2011.02.029
See this article

Evidence of ovulation in goats () with short estrous cycle and its occurrence in the tropics

W.A. Cerbito, N.G. Natural, F.B. Aglibut and K. Sato
Theriogenology 43 (4) 803 (1995)
DOI: 10.1016/0093-691X(95)00023-2
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Reproductive performance of Alpine dairy goats in a semi-arid environment of Mexico under a continuous breeding system

E. Silva, M.A. Galina, J.M. Palma and J. Valencia
Small Ruminant Research 27 (1) 79 (1998)
DOI: 10.1016/S0921-4488(97)00025-4
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Decrease in the seasonality of sexual behavior and sperm production in bucks by exposure to short photoperiodic cycles

J.A. Delgadillo, B. Leboeuf and P. Chemineau
Theriogenology 36 (5) 755 (1991)
DOI: 10.1016/0093-691X(91)90341-A
See this article

Melatonin in the Promotion of Health, Second Edition

Luis Zarazaga, José Guzmán and Benoît Malpaux
Melatonin in the Promotion of Health, Second Edition 339 (2011)
DOI: 10.1201/b11101-22
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The influence of the pineal gland and melatonin on the reproductive performance of domesticated female ungulates

S.L. Deveson, J. Arendt and I.A. Forsyth
Animal Reproduction Science 30 (1-3) 113 (1992)
DOI: 10.1016/0378-4320(92)90008-2
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Post-partum anoestrus in Anglo-Nubian and Saanen goats raised in semi-arid of North-eastern Brazil

V.J.F. Freitas, D. Rondina, D.M. Nogueira and A.A. Simplı́cio
Livestock Production Science 90 (2-3) 219 (2004)
DOI: 10.1016/j.livprodsci.2004.06.005
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Blood melatonin levels relating to the reproductive activity of Sarda does

V. Carcangiu, G.M. Vacca, A. Parmeggiani, M.C. Mura and P.P. Bini
Small Ruminant Research 59 (1) 7 (2005)
DOI: 10.1016/j.smallrumres.2004.11.011
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Seasonality of estrus and ovulation is not modified by subjecting female Alpine goats to a tropical photoperiod

P. Chemineau, A. Daveau, F. Maurice and J.A. Delgadillo
Small Ruminant Research 8 (4) 299 (1992)
DOI: 10.1016/0921-4488(92)90211-L
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The effects of melatonin and light treatment on the reproductive performance of yearling Suffolk rams

M. Hanif and H.Ll. Williams
British Veterinary Journal 147 (1) 49 (1991)
DOI: 10.1016/0007-1935(91)90066-V
See this article

Effect of plane of nutrition on seasonality of reproduction in Spanish Payoya goats

L.A. Zarazaga, J.L. Guzmán, C. Domínguez, M.C. Pérez and R. Prieto
Animal Reproduction Science 87 (3-4) 253 (2005)
DOI: 10.1016/j.anireprosci.2004.11.004
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Oestrus in the british white goat: Timing of plasma luteinizing hormone surge and changes in behavioural and vaginal traits in relationship to onset of oestrus

C.A. Llewelyn, J. Perrie, A.G. Luckins and C.D. Munro
British Veterinary Journal 149 (2) 171 (1993)
DOI: 10.1016/S0007-1935(05)80087-9
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Effect of an inverse subtropical (19°13′N) photoperiod on ovarian activity, melatonin and prolactin secretion in Pelibuey ewes

C Cerna, A Porras, M.J Valencia, G Perera and L Zarco
Animal Reproduction Science 60-61 511 (2000)
DOI: 10.1016/S0378-4320(00)00127-5
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Plasma progesterone profiles and variation in cyclic ovarian activity throughout the year in indigenous goats in Zimbabwe

C.A. Llewelyn, J.S. Ogaa and M.J. Obwolo
Animal Reproduction Science 30 (4) 301 (1993)
DOI: 10.1016/0378-4320(93)90080-B
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Effect of melatonin implants on the incidence and timing of puberty in female red deer (Cervus elaphus)

G.W. Asher, J.A. Archer, J.F. Ward, I.C. Scott and R.P. Littlejohn
Animal Reproduction Science 123 (3-4) 202 (2011)
DOI: 10.1016/j.anireprosci.2010.11.018
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Highly synchronous and fertile reproductive activity induced by the male effect during deep anoestrus in lactating goats subjected to treatment with artificially long days followed by a natural photoperiod

Maria-Teresa Pellicer-Rubio, Bernard Leboeuf, Daniel Bernelas, et al.
Animal Reproduction Science 98 (3-4) 241 (2007)
DOI: 10.1016/j.anireprosci.2006.03.002
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Seasonal variation in testicular volume and sexual behavior of Chios and Serres rams

Melpomeni Avdi, Georgios Banos, Kostantinos Stefos and Philippe Chemineau
Theriogenology 62 (1-2) 275 (2004)
DOI: 10.1016/j.theriogenology.2003.10.004
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Reproductive performance of Lacaune dairy sheep exposed to artificial long days followed by natural photoperiod without and with additional progestagen treatment during the nonbreeding season

A. Fleisch, H. Bollwein, M. Piechotta and F. Janett
Theriogenology 83 (3) 320 (2015)
DOI: 10.1016/j.theriogenology.2014.06.031
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The response of luteinizing hormone secretion to photoperiod is modified by the level of nutrition in female Mediterranean goats

L.A. Zarazaga, I. Celi, J.L. Guzmán and B. Malpaux
Animal Reproduction Science (2011)
DOI: 10.1016/j.anireprosci.2011.04.017
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Melatonin-Dependent Timing of Seasonal Reproduction by the Pars Tuberalis: Pivotal Roles for Long Daylengths and Thyroid Hormones

Hugues Dardente
Journal of Neuroendocrinology 24 (2) 249 (2012)
DOI: 10.1111/j.1365-2826.2011.02250.x
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Enhancement of the male effect on reproductive performance in female Mediterranean goats with long day and/or melatonin treatment

Luis A. Zarazaga, Irma Celi, José L. Guzmán and Benoît Malpaux
The Veterinary Journal 192 (3) 441 (2012)
DOI: 10.1016/j.tvjl.2011.09.012
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Exogenous melatonin after a treatment of artificial long days is able to increase LH secretion during seasonal anoestrus in Payoya goats

Luis A. Zarazaga, Maria Carolina Gatica, Irma Celi, José Luis Guzmán and Benoît Malpaux
Journal of Applied Animal Research 41 (1) 34 (2013)
DOI: 10.1080/09712119.2012.738226
See this article

Photoperiodic control of the time of parturition in alpacas (Lama pacos)

T.W. Knight, A.F. Death and T.K. Wyeth
Animal Reproduction Science 39 (4) 259 (1995)
DOI: 10.1016/0378-4320(95)01398-J
See this article

Abolition of seasonal variations in semen quality and maintenance of sperm fertilizing ability by photoperiodic cycles in goat bucks

J.A. Delgadillo, B. Leboeuf and P. Chemineau
Small Ruminant Research 9 (1) 47 (1992)
DOI: 10.1016/0921-4488(92)90055-9
See this article

Fundamental Issues Related to the Origin of Melatonin and Melatonin Isomers during Evolution: Relation to Their Biological Functions

Dun-Xian Tan, Xiaodong Zheng, Jin Kong, et al.
International Journal of Molecular Sciences 15 (9) 15858 (2014)
DOI: 10.3390/ijms150915858
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Systematic review and meta-analysis of the efficacy of reproductive management practices used to induce resumption of ovarian cyclical activity in anestrous does

Daniel Diaz, Rene J. Rosiles, Christian J. Urias-Castro, et al.
Preventive Veterinary Medicine 169 104709 (2019)
DOI: 10.1016/j.prevetmed.2019.104709
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Hormone-free Protocols for the Control of Reproduction and Artificial Insemination in Goats

A Lopez-Sebastián, MA Coloma, A Toledano and J Santiago-Moreno
Reproduction in Domestic Animals 49 22 (2014)
DOI: 10.1111/rda.12394
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New objective measurements of semen wave motion are associated with fertility in sheep

I. David, P. Kohnke, J. Fehrenbach, et al.
Reproduction, Fertility and Development 30 (6) 889 (2018)
DOI: 10.1071/RD17472
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Endocrinology: Adult and Pediatric

David C. Klein
Endocrinology: Adult and Pediatric 312 (2016)
DOI: 10.1016/B978-0-323-18907-1.00019-6
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Shortened daily photoperiod during the non-breeding season can improve the reproductive performance of camel bulls (Camelus dromedarius)

Ayman Abdel-Aziz Swelum, Islam M. Saadeldin, Hani Ba-Awadh and Abdullah N. Alowaimer
Animal Reproduction Science 195 334 (2018)
DOI: 10.1016/j.anireprosci.2018.06.014
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Mass sperm motility is associated with fertility in sheep

Ingrid David, Philippa Kohnke, Gilles Lagriffoul, et al.
Animal Reproduction Science 161 75 (2015)
DOI: 10.1016/j.anireprosci.2015.08.006
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Testicular function and semen characteristics of Awassi rams treated with melatonin out of the breeding season

Vera Faigl, Mónika Keresztes, Margit Kulcsár, et al.
Acta Veterinaria Hungarica 57 (4) 531 (2009)
DOI: 10.1556/AVet.57.2009.4.7
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Role of core circadian clock genes in hormone release and target tissue sensitivity in the reproductive axis

Aritro Sen and Hanne M. Hoffmann
Molecular and Cellular Endocrinology 501 110655 (2020)
DOI: 10.1016/j.mce.2019.110655
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Photoperiod-treated bucks are equal to melatonin-treated bucks for inducing reproductive behaviour and physiological functions via the “male effect” in Mediterranean goats

L.A. Zarazaga, M.C. Gatica, H. Hernández, et al.
Animal Reproduction Science 202 58 (2019)
DOI: 10.1016/j.anireprosci.2019.01.008
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The inhibitory effect of melatonin on mammary function of lactating dairy goats†

Wenlong Zhang, Jinxuan Chen, Yongxin Zhao, et al.
Biology of Reproduction 100 (2) 455 (2019)
DOI: 10.1093/biolre/ioy223
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Effects of nutritional cues on the duration of the winter anovulatory phase and on associated hormone levels in adult female Welsh pony horses (Equus caballus)

Juan Salazar-Ortiz, Sylvaine Camous, Christine Briant, Lionel Lardic, Didier Chesneau and Daniel Guillaume
Reproductive Biology and Endocrinology 9 (1) (2011)
DOI: 10.1186/1477-7827-9-130
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Administration of melatonin improves testicular blood flow, circulating hormones, and semen quality in Shiba goats

Haney Samir, Paul Nyametease, Mohamed Elbadawy, Kentaro Nagaoka, Kazuaki Sasaki and Gen Watanabe
Theriogenology 146 111 (2020)
DOI: 10.1016/j.theriogenology.2020.01.053
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Overcoming neuroendocrine and metabolic barriers to puberty: the role of melatonin in advancing puberty in ewe lambs

K.R. Pool, J.P. Rickard and S.P. de Graaf
Domestic Animal Endocrinology 72 106457 (2020)
DOI: 10.1016/j.domaniend.2020.106457
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Artificial long days in addition to exogenous melatonin and daily contact with bucks stimulate the ovarian and oestrous activity in Mediterranean goat females

L.A. Zarazaga, M.C. Gatica, I. Celi, J.L. Guzmán and B. Malpaux
Animal 5 (9) 1414 (2011)
DOI: 10.1017/S1751731111000413
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Extended day length in late winter/early spring, with a return to natural day length of shorter duration, increased plasma testosterone and sexual performance in rams with or without melatonin implants

JA Abecia, P Chemineau, M Keller and JA Delgadillo
Reproduction in Domestic Animals 52 (5) 851 (2017)
DOI: 10.1111/rda.12988
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Seasonal Changes of FSH, LH, Total and Free Testosterone Hormones in Saanen Bucks

Çağrı KANDEMİR, Turgay TAŞKIN and Nedim KOŞUM
Tekirdağ Ziraat Fakültesi Dergisi 20 (1) 125 (2023)
DOI: 10.33462/jotaf.1086419
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The effect of nutrition on the seasonality of reproduction in ewes

Fernando Forcada and José-Alfonso Abecia
Reproduction Nutrition Development 46 (4) 355 (2006)
DOI: 10.1051/rnd:2006017
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Blood transcriptome of Rasa Aragonesa rams with different sexual behavior phenotype reveals CRYL1 and SORCS2 as genes associated with this trait

Kenza Lakhssassi, María Pilar Sarto, Belén Lahoz, José Luis Alabart, José Folch, Malena Serrano and Jorge Hugo Calvo
Journal of Animal Science 101 (2023)
DOI: 10.1093/jas/skad098
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Koyunlarda Üremenin Denetlenmesinde Güncel Yaklaşımlar

Eser AKAL and Ceyhan AKDAĞ
Hayvansal Üretim 59 (2) 65 (2018)
DOI: 10.29185/hayuretim.446788
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Comparison of four strategies of ram management in a semen collection centre

Francisco Arrebola, Esteban Castillejo‐Lacalle, Francisco Borjas‐Muñoz, Francisco J. Querino‐Santiago, Francisca C. Redondo‐Cardador and José‑Alfonso Abecia
Reproduction in Domestic Animals 57 (S5) 103 (2022)
DOI: 10.1111/rda.14120
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Efficacy of long day photoperiod treatment with respect to age of bucks for stimulation of the “male effect” on does at Mediterranean latitudes

L.A. Zarazaga, M.C. Gatica, M. Delgado-Pertíñez, H. Hernández, J.L. Guzmán and J.A. Delgadillo
Small Ruminant Research 212 106712 (2022)
DOI: 10.1016/j.smallrumres.2022.106712
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Polymorphisms of the melatonin receptor 1A (MTNR1A) gene influence the age at first mating in autumn-born ram-lambs and sexual activity of adult rams in spring

J.A. Abecia, M.C. Mura, M. Carvajal-Serna, L. Pulinas, A. Macías, A. Casao, R. Pérez-Pe and V. Carcangiu
Theriogenology 157 42 (2020)
DOI: 10.1016/j.theriogenology.2020.07.030
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Is it time to reconsider the relative weight of sociosexual relationships compared with photoperiod in the control of reproduction of small ruminant females?

J.A. Delgadillo, H. Hernández, J.A. Abecia, M. Keller and P. Chemineau
Domestic Animal Endocrinology 73 106468 (2020)
DOI: 10.1016/j.domaniend.2020.106468
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An automated method for the evaluation of ram libido in real mating conditions

M. Alhamada, N. Debus and F. Bocquier
Animal 11 (11) 2036 (2017)
DOI: 10.1017/S1751731117000611
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Articles citing this article

Cited article:

Photoperiodic and melatonin treatments for the control of seasonal reproduction in sheep and goats

This article has been cited by the following article(s):

Variation of ewe olfactory secretome during a ram effect

Management of Reproduction in Farm Animals: Present and Future

Exploring differentially expressed genes in hypothalamic, pars tuberalis and pineal gland transcriptomes in different sexual behavior phenotypes in rams using RNA-Seq

Accelerated lambing achieved by a photoperiod regimen consisting of alternating 4-month sequences of long and short days applied year-round1

Fibre growth of cashmere-bearing goats given melatonin in late autumn and winter

Control of sheep and goat reproduction: Use of light and melatonin

Ovarian activity and fertility during the first breeding season of friesland ewe lambs

Effect of artificial long days and/or melatonin treatment on the sexual activity of Mediterranean bucks

Evaluation of melatonin and bromocryptine administration in Spanish goats

Effect of a single subcutaneous injection of melatonin on estrous response and conception rate in goats

Evaluation of melatonin and bromocryptine administration in Spanish goats

Initiation of the breeding season in ewe lambs and goat kids with melatonin implants

Seasonal dynamics of sperm morphometric subpopulations and its association with sperm quality parameters in ram ejaculates

Out-of-Season Breeding in Goats

Reproduction in Domestic Animals

Artificial long days and daily contact with bucks induce ovarian but not oestrous activity during the non-breeding season in Mediterranean goat females

Evidence of ovulation in goats () with short estrous cycle and its occurrence in the tropics

Reproductive performance of Alpine dairy goats in a semi-arid environment of Mexico under a continuous breeding system

Decrease in the seasonality of sexual behavior and sperm production in bucks by exposure to short photoperiodic cycles

Melatonin in the Promotion of Health, Second Edition

The influence of the pineal gland and melatonin on the reproductive performance of domesticated female ungulates

Post-partum anoestrus in Anglo-Nubian and Saanen goats raised in semi-arid of North-eastern Brazil

Blood melatonin levels relating to the reproductive activity of Sarda does

Seasonality of estrus and ovulation is not modified by subjecting female Alpine goats to a tropical photoperiod

The effects of melatonin and light treatment on the reproductive performance of yearling Suffolk rams

Effect of plane of nutrition on seasonality of reproduction in Spanish Payoya goats

Oestrus in the british white goat: Timing of plasma luteinizing hormone surge and changes in behavioural and vaginal traits in relationship to onset of oestrus

Effect of an inverse subtropical (19°13′N) photoperiod on ovarian activity, melatonin and prolactin secretion in Pelibuey ewes

Plasma progesterone profiles and variation in cyclic ovarian activity throughout the year in indigenous goats in Zimbabwe

Effect of melatonin implants on the incidence and timing of puberty in female red deer (Cervus elaphus)

Highly synchronous and fertile reproductive activity induced by the male effect during deep anoestrus in lactating goats subjected to treatment with artificially long days followed by a natural photoperiod

Seasonal variation in testicular volume and sexual behavior of Chios and Serres rams

Reproductive performance of Lacaune dairy sheep exposed to artificial long days followed by natural photoperiod without and with additional progestagen treatment during the nonbreeding season

The response of luteinizing hormone secretion to photoperiod is modified by the level of nutrition in female Mediterranean goats

Melatonin-Dependent Timing of Seasonal Reproduction by the Pars Tuberalis: Pivotal Roles for Long Daylengths and Thyroid Hormones

Enhancement of the male effect on reproductive performance in female Mediterranean goats with long day and/or melatonin treatment

Exogenous melatonin after a treatment of artificial long days is able to increase LH secretion during seasonal anoestrus in Payoya goats

Photoperiodic control of the time of parturition in alpacas (Lama pacos)

Abolition of seasonal variations in semen quality and maintenance of sperm fertilizing ability by photoperiodic cycles in goat bucks

Fundamental Issues Related to the Origin of Melatonin and Melatonin Isomers during Evolution: Relation to Their Biological Functions

Systematic review and meta-analysis of the efficacy of reproductive management practices used to induce resumption of ovarian cyclical activity in anestrous does

Hormone-free Protocols for the Control of Reproduction and Artificial Insemination in Goats

New objective measurements of semen wave motion are associated with fertility in sheep

Endocrinology: Adult and Pediatric

Shortened daily photoperiod during the non-breeding season can improve the reproductive performance of camel bulls (Camelus dromedarius)

Mass sperm motility is associated with fertility in sheep

Testicular function and semen characteristics of Awassi rams treated with melatonin out of the breeding season

Role of core circadian clock genes in hormone release and target tissue sensitivity in the reproductive axis

Photoperiod-treated bucks are equal to melatonin-treated bucks for inducing reproductive behaviour and physiological functions via the “male effect” in Mediterranean goats

The inhibitory effect of melatonin on mammary function of lactating dairy goats†

Effects of nutritional cues on the duration of the winter anovulatory phase and on associated hormone levels in adult female Welsh pony horses (Equus caballus)

Administration of melatonin improves testicular blood flow, circulating hormones, and semen quality in Shiba goats

Overcoming neuroendocrine and metabolic barriers to puberty: the role of melatonin in advancing puberty in ewe lambs

Artificial long days in addition to exogenous melatonin and daily contact with bucks stimulate the ovarian and oestrous activity in Mediterranean goat females

Extended day length in late winter/early spring, with a return to natural day length of shorter duration, increased plasma testosterone and sexual performance in rams with or without melatonin implants

Seasonal Changes of FSH, LH, Total and Free Testosterone Hormones in Saanen Bucks

The effect of nutrition on the seasonality of reproduction in ewes

Blood transcriptome of Rasa Aragonesa rams with different sexual behavior phenotype reveals CRYL1 and SORCS2 as genes associated with this trait

Koyunlarda Üremenin Denetlenmesinde Güncel Yaklaşımlar

Comparison of four strategies of ram management in a semen collection centre

Efficacy of long day photoperiod treatment with respect to age of bucks for stimulation of the “male effect” on does at Mediterranean latitudes

Polymorphisms of the melatonin receptor 1A (MTNR1A) gene influence the age at first mating in autumn-born ram-lambs and sexual activity of adult rams in spring

Is it time to reconsider the relative weight of sociosexual relationships compared with photoperiod in the control of reproduction of small ruminant females?

An automated method for the evaluation of ram libido in real mating conditions