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Relevant bibliographies by topics / Dairy cattle reproduction

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Academic literature on the topic 'Dairy cattle reproduction'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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Journal articles on the topic "Dairy cattle reproduction"

1

Rasad, Siti Darodjah. "Evaluasi Penampilan Reproduksi Sapi Perah (Studi Kasus Di Perusahaan Peternakan Sapi Perah KUD Sinarjaya)." Jurnal Agripet 9, no. 1 (2009): 43–49. http://dx.doi.org/10.17969/agripet.v9i1.621.

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Evaluation performance reproduction on dairy cattle (Case study in sinarjaya dairy cattle cooperationABSTRACT. Aim of the identification of performance reproduction was to find out the successfully of reproduction management in the dairy cattle firm or farmers. Performance reproduction of dairy cattle include days open, calving interval, service per conception, first service postpartum and length of the pregnancy. All of that performance reproduction values was ideal value and close relation to the production and that values was difference between farmer and depend of management themselves. Si

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Popov, N. A., Yu A. Ivanov, V. K. Skorkin, and V. Yu Sidorova. "Innovative technologies of dairy cattle reproduction." Glavnyj zootehnik (Head of Animal Breeding), no. 6 (June 1, 2021): 20–29. http://dx.doi.org/10.33920/sel-03-2106-03.

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The American company for the reproduction of dairy cattle – World Wide Sires was formed in 1976 in the United States, and its subsidiary World Wide Sires Russia – in 2006 in the Russian Federation. Over the past decades the average milk yield of cows has been increased significantly, but their fertility has been decreased. A comparison of the DNA of cows producing about 20,000 kg of milk and more than 1,000 kg of milk fat per lactation has shown a genetic association between the milk yield of cows and the fertility of breeding sires. Therefore, one of the directions of the company’s developmen

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Gill, M., V. Posukhin, and M. Tymofiiv. "Organisation of dairy cattle herd reproduction." Animal Biology 26, no. 4 (2024): 18–32. https://doi.org/10.15407/animbiol26.04.018.

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A fairly high hereditary potential of cows of modern Ukrainian breeds in terms of the main traits of milk production is discussed. It was found that higher milk yield, content and amount of fat in milk are inherent in cows of the Ukrainian Black Speckled Dairy breed, which in the context of the four evaluated lactations were better, except for the third (where no clear leader was found for the main traits). In modern high-yielding herds of Ukrainian cattle, the duration of lactation, regardless of the genotype with or without Holstein bloodlines, exceeds the optimal value (305 days), which is

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Lucy, M. C., and B. A. Crooker. "Physiological and genetic differences between low and high index dairy cows." BSAP Occasional Publication 26, no. 1 (2001): 223–36. http://dx.doi.org/10.1017/s0263967x0003370x.

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AbstractSelection of dairy cattle for increased milk production has decreased some indices of reproductive efficiency. For example, days open are increased by one day for every 100 kg of increased milk yield per lactation. Some of the change in days open can be explained by delayed onset of oestrous cyclicity and lower conception rate to artificial insemination in cows with greater milk production. Despite these negative associations between milk production and reproduction, reproduction in herds of high producing dairy cattle is not necessarily compromised relative to reproduction in herds of

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Ferag, Aziza, Djalel Eddine Gherissi, Nadjat Bordja, Amel Boughanem, Hafida Hadj Moussa, and Tarek Khenenou. "Monitoring of Reproduction Activity on Algerian Dairy Cattle Farms." Folia Veterinaria 67, no. 4 (2023): 67–78. http://dx.doi.org/10.2478/fv-2023-0040.

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Abstract This study aimed to evaluate the reproductive monitoring activity in Algerian dairy cattle herds. A participatory survey was conducted with 75 veterinarians and inseminators affiliated with the National Centre for Artificial Insemination and Genetic Improvement (CNIAAG). Reproduction monitoring represents a primary activity for 12 % of the veterinarians. Only 10.8 % of veterinarians earn more than 50 % of the yearly global revenue from reproductive activities. 85.3 % of the veterinarians fix the herd monitoring objectives, 64 % use a paper notebook to manage breeding data, and only 22

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СЕМЕНОВ, В. Г., С. Г. КОНДРУЧИНА, А. Н. МАЙКОТОВ, С. Л. ТОЛСТОВА, and Т. Н. ИВАНОВА. "SYSTEM OF DIRECTED REPRODUCTION OF DAIRY CATTLE." VESTNIK RIAZANSKOGO GOSUDARSTVENNOGO AGROTEHNOLOGICHESKOGO UNIVERSITETA IM P A KOSTYCHEVA, no. 4(48) (December 29, 2020): 69–76. http://dx.doi.org/10.36508/rsatu.2020.48.4.010.

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Цель работы – изучить влияние направленного воспроизводства коров на формирование высокопродуктивных здоровых стад. Методология. Научно-исследовательская работа проведена в базовых хозяйствах Республики Казахстан: СПК «ПЗ Алматы», ИП «Сыдыков», ИП «Каримов», ТОО «Тастобе АгроФуд» Алматинской, ТОО «Какпатас-Кордай» Жамбылской, ТОО «Борте милка» Туркестанской и КХ «Зайтенов» Восточно-Казахстанской областей. Для искусственного осеменения выбирали телок 12-14-месячного возраста живой массой от 360 кг и коров-первотелок голштинской, симментальской, швицкой и черно-пестрой пород. Осеменение проводил

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MCDOUGALL, Scott. "Reproduction Performance and Management of Dairy Cattle." Journal of Reproduction and Development 52, no. 1 (2006): 185–94. http://dx.doi.org/10.1262/jrd.17091.

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López-Gatius, Fernando. "Advances in Dairy Cattle Reproduction—A Foreword." Animals 14, no. 18 (2024): 2650. http://dx.doi.org/10.3390/ani14182650.

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Kolosha, Valeriy. "ORGANIZATIONAL AND ECONOMIC MEASURES OF CATTLE REPRODUCTION AT AGRICULTURAL ENTERPRISES." Institute of accounting, control and analysis in the globalization circumstances, no. 3-4 (December 30, 2022): 58–66. http://dx.doi.org/10.35774/ibo2022.03-04.058.

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Introduction. Reproduction of a herd of cattle is one of the most time-consuming processes in cattle breeding, since the productivity of cows, the efficiency of selection and breeding work, the duration and intensity of use of genetically valuable high-performance animals, the quality of products obtained from them and the profitability of its production depend on this process. Methods. During the research, modern general scientific and special methods of economic research were used, in particular: systemic approach, comparative economic and statistical methods. The results. It was established

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BATRA, T. R., A. J. LEE, and A. J. McALLISTER. "RELATIONSHIPS OF REPRODUCTION TRAITS, BODY WEIGHT AND MILK YIELD IN DAIRY CATTLE." Canadian Journal of Animal Science 66, no. 1 (1986): 53–65. http://dx.doi.org/10.4141/cjas86-007.

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The relationships between reproduction traits, body weight and milk yield were investigated using data from 1611 heifers and 733 cows from two lines of the National Cooperative Dairy Cattle Breeding Project. The data were analyzed separately for heifers and cows within lines using a mixed linear model containing fixed effects for station, year of birth, season of birth and random effect of sires. Heritability estimates and genetic correlations were estimated by a paternal half-sib analysis. Heritability estimates for heifer and cow reproduction traits ranged between 0 and 26% while those of bo

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Dissertations / Theses on the topic "Dairy cattle reproduction"

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Margerison, Jean K. "Restricted suckling and nutrition of dairy cattle." Thesis, Bangor University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296323.

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Olynk, Nicole J. "Economic analyses of reproduction management strategies and technologies on U.S. dairy farms." Diss., Connect to online resource - MSU authorized users, 2008.

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Thesis (M.S.)--Michigan State University. Dept. of Agricultural, Food, and Resource Economics, 2008.<br>Title from PDF t.p. (viewed on July 28, 2009) Includes bibliographical references (p. 105-108). Also issued in print.

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Hamudikuwanda, Humphrey. "Endocrine and metabolic mediators of dietary energy status and reproduction in dairy cows." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28770.

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Five experiments were undertaken to identify metabolites and hormones that could mediate the effect of dietary energy status on reproduction, particularly pulsatile secretion of luteinizing hormone (LH) postpartum dairy cows.<br>In the first two experiments, the concentration of progesterone (P4) in tailhead adipose tissue and plasma in 12 cows at different stages of pregnancy and lactation was determined as was P4 produced in vitro by explants of tailhead adipose tissue. Concentration of P4 in adipose tissue was correlated with that of plasma P4 near estrus and during the luteal phase of the

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Larcombe, Michael Tinniswood. "The effects of manipulating reproduction on the productivity and profitability of dairy herds which graze pasture /." Connect to thesis, 1989. http://eprints.unimelb.edu.au/archive/00000650.

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Hazelton, Mark. "Mycoplasmosis in Australian dairy herds." Thesis, The University of Sydney, 2020. https://hdl.handle.net/2123/25443.

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Mycoplasmosis is endemic to most countries where dairy production occurs. This thesis focuses on observations in Mycoplasma bovis-infected herds associated with bulls, reproduction, subclinical carrier animals and M. bovis exposed calves. Mycoplasma bovis was isolated from four of 118 bulls after use in four herds infected with M. bovis. This study demonstrated a high degree of subclinical exposure of bulls to M. bovis in infected herds via serology and highlighted the potential for bulls to be mycoplasma carriers within and between herds. Mycoplasma spp. were infrequently isolated from

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Voelz, Benjamin. "Heat stress and uterine disease: Stressors influencing reproduction of dairy cattle." Diss., Kansas State University, 2017. http://hdl.handle.net/2097/36195.

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Doctor of Philosophy<br>Department of Animal Sciences and Industry<br>Luis G. Mendonca<br>Reproduction is an important part of a dairy operation that directly affects milk production and profitability. Fertility of high-producing dairy cows is less than desired. Reproductive efficiency is further impaired during summer months and after cows develop postpartum uterine disease. Heat stress and uterine disease act as stressors that negatively influence fertility of dairy cattle through a variety of mechanisms. This dissertation further investigates the negative effects of heat stress and uterine

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Gallo, Guillermo Federico. "Effects of exogenous recombinant bovine somatotropin on reproduction and nutritional status of dairy cattle." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74303.

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Long-term administration of recombinant bovine somatotropin (rbST) significantly increased milk and 3.5% fat-corrected milk production without altering milk composition. These effects occurred regardless of breed, parity or drug delivery system (daily or sustained-release) utilized. Somatotropin did not affect apparent digestibility of rations, dry matter intake, crude protein intake, energy intake or energy balance. Body energy reserves, measured as body condition scores, decreased during rbST treatment resulting, together with the increase in milk yield, in an improvement of the efficiency o

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Rodney, Rachael May. "Transition Nutrition for Improved Fertility, Productivity, and Health of Dairy Cattle." Thesis, The University of Sydney, 2017. https://hdl.handle.net/2123/21726.

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The transition period, from approximately three weeks before to three weeks after calving, is characterised by sudden and substantial changes in nutrient requirements as dairy cattle respond to the metabolic challenges of late pregnancy and early lactation. The success by which cows meet these challenges determines their productivity, health and reproductive success not only over transition, but also throughout the following lactation. Manipulations of the pre-calving and early lactation diet have led to persistent improvements in milk production, health and reproduction, leading us to pose th

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Lefebvre, Daniel Maurice. "Studies on the effects of recombinant bovine somatotropin on nutritional status and reproduction of dairy cows." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0003/NQ44488.pdf.

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Truman, Carissa Marie. "AUTOMATED BODY CONDITION SCORING: PROGRESSION ACROSS LACTATION AND ITS ASSOCIATION WITH DISEASE AND REPRODUCTION IN DAIRY CATTLE." UKnowledge, 2019. https://uknowledge.uky.edu/animalsci_etds/96.

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Body condition scoring is a technique used to noninvasively assess fat reserves. It provides an objective estimate to describe the current and past nutritional status of the dairy cow and has been associated with increased disease risk and breeding success. Traditionally body condition scores are taken manually by visual appraisal on a 1 to 5 scale, in one-quarter increments. However, recent studies have shown the potential of automating the body condition scoring of cows using images. The first objective was to estimate the likelihood of disease development and breeding success, using odds ra

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Books on the topic "Dairy cattle reproduction"

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United States. Animal and Plant Health Inspection Service. Veterinary Services. Centers for Epidemiology and Animal Health. Reproduction practices on U.S. dairy operations, 2007. U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Centers for Epidemiology and Animal Health, 2009.

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2

Galvin, James A. Ovarian follicular development following oestrus syncronization programmes at different stages of the oestrous cycle in lactating dairy cows. University College Dublin, 1995.

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3

Reckow, Martin. Beziehungen zwischen der Milch- und Fortpflanzungsleistung beim Rind unter Berücksichtigung des Holstein-Friesian-Genanteils sowie der Standortintensität. M. Reckow, 1985.

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4

Nyean, Lee Chin, ed. Using gonadotropin-releasing hormone (GnRH) to improve dairy cattle conception rates in the tropics. HITAHR, College of Tropical Agriculture and Human Resources, University of Hawaii, 1989.

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5

Soderquist, Lennart. Sperm characteristics and fertility in dairy A.I. bulls: With special reference to sperm motility, ATP content, sperm morphology, and spermatogenesis. Sveriges Lantbruksuniversitet, 1991.

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6

M, Sreenan J., Diskin M. G, and Commission of the European Communities. Coordination of Agricultural Research., eds. Embryonic mortality in farm animals: A seminar in the CEC programme of coordination of research on livestock productivity and management. M. Nijhoff for the Commission of the European Communities, 1986.

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7

Lane, V. Michael. Dairy herd reproductive troubleshooting: A problem-oriented approach. Washington State University, 1989.

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Agency, International Atomic Energy, and Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture., eds. Improving the reproductive management of dairy cattle subjected to artificial insemination. International Atomic Energy Agency, 2007.

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Korolev, Anton, Nadezhda Baranova, Elena Koroleva, Raisa Tamarova, and Dmitriy Nekrasov. Improvement of Kostroma breed cattle with the use of domestic and imported breeding bulls. INFRA-M Academic Publishing LLC., 2023. http://dx.doi.org/10.12737/1900632.

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The Kostroma breed of cattle of dairy and meat productivity is a valuable gene pool of domestic animal husbandry. Animals of this breed have high milk yields, good meat and reproductive qualities, easily adapt to intensive technologies and are characterized by resistance to tuberculosis, leukemia and brucellosis. The use of the gene pool of brown Swiss cattle of imported origin (USA, Canada, Austria) has a great influence on improving the competitiveness of the Kostroma breed. At the same time, when breeding Kostroma cattle, it is important not only to enrich heredity by using the gene pool of

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Dairy Cows: Reproduction, Nutritional Management and Diseases. Nova Science Pub Inc, 2013.

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Book chapters on the topic "Dairy cattle reproduction"

1

Ambrose, Divakar J. "Postpartum Anestrus and its Management in Dairy Cattle." In Bovine Reproduction. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118833971.ch52.

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Pérez-Garnelo, Sonia S., María José Utrilla, Aitor Fernández-Novo, Ángel Revilla-Ruiz, Arantxa Villagrá, and Susana Astiz. "Effect of Stress on Reproduction and Reproductive Technologies in Male and Female, Beef and Dairy Cattle." In Assisted Reproductive Technologies in Animals Volume 1. Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-73079-5_6.

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Colloton, Jill D. "Applications of Ultrasonography in Dairy Cattle Reproductive Management." In Dairy Production Medicine. Blackwell Publishing Ltd., 2011. http://dx.doi.org/10.1002/9780470960554.ch8.

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Risco, Carlos A., and Pedro Melendez Retamal. "Diseases that Affect the Reproductive Performance of Dairy Cattle." In Dairy Production Medicine. Blackwell Publishing Ltd., 2011. http://dx.doi.org/10.1002/9780470960554.ch10.

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Shields, S. L., H. Woelders, M. Boer, et al. "Integrating nutritional and reproductive models to improve reproductive efficiency in dairy cattle." In Energy and protein metabolism and nutrition in sustainable animal production. Wageningen Academic Publishers, 2013. http://dx.doi.org/10.3920/978-90-8686-781-3_111.

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Damayanti, D. A., A. P. A. Yekti, Kuswati, and T. Susilawati. "Successful pregnancy and ovarian condition in Friesian Holstein crossbred dairy cattle with reproductive disorders after single and double dosage artificial insemination." In Developing Modern Livestock Production in Tropical Countries. CRC Press, 2023. http://dx.doi.org/10.1201/9781003370048-6.

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Thatcher, W. W. "Dairy Cattle: Reproduction Management." In Encyclopedia of Animal Science. CRC Press, 2004. http://dx.doi.org/10.1201/9781482276664-83.

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Thatcher, W. W. "Dairy Cattle: Reproduction Management." In Encyclopedia of Animal Science, Second Edition. CRC Press, 2011. http://dx.doi.org/10.1081/e-eas2-120019556.

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Guss, Samuel B. "Reproduction Management for Dairy Cattle." In Dairy Science Handbook. CRC Press, 2019. http://dx.doi.org/10.1201/9780429049361-23.

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Fuquay, J. W. "STRESS, HEAT, IN DAIRY CATTLE | Effects on Reproduction." In Encyclopedia of Dairy Sciences. Elsevier, 2002. http://dx.doi.org/10.1016/b0-12-227235-8/00478-8.

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Conference papers on the topic "Dairy cattle reproduction"

1

TRUKHACHEV, Vladimir, Sergey OLEYNIK, Nikolay ZLYDNEV, and Vitaliy MOROZOV. "SCREENING OF COMPLEX VERTEBRAL MALFORMATION (CVM) AND BOVINE LEUKOCYTE ADHESION DEFICIENCY (BLAD) IN THE AYRSHIRE CATTLE BREED IN THE NORTH CAUCASUS." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.142.

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The Ayrshire dairy breed is renowned for producing large quantities of high quality milk and, therefore, is frequently used for crossbreeding. However, various hereditary anomalies caused by gene mutations have been recently recorded in calves produced by some Ayrshire sires. Most of these anomalies were shown to have a recessive inheritance pattern, thus imposing a threat of unpredictable dramatic changes in cattle genotypes under such factors as genetic drift, selection and inbreeding. The purpose of this study was to examine the susceptibility of the Ayrshire cattle bred in the North Caucas

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"Dairy cattle reproductive technology application in Taiwan." In Dairy herd improvement by the use of reproductive biotechnologies. Food and Fertilizer Technology Center for the Asian and Pacific Region, 2015. https://doi.org/10.56669/xtpy9536.

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"Advances in embryo collection and transfer in cattle." In Dairy herd improvement by the use of reproductive biotechnologies. Food and Fertilizer Technology Center for the Asian and Pacific Region, 2015. https://doi.org/10.56669/nnof4257.

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"Sperm capacitation and in vitro fertilization in cattle." In Dairy herd improvement by the use of reproductive biotechnologies. Food and Fertilizer Technology Center for the Asian and Pacific Region, 2015. https://doi.org/10.56669/bebc8529.

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"Top reproductive performance of dairy cattle in tropical climate with assisted technology." In Dairy herd improvement by the use of reproductive biotechnologies. Food and Fertilizer Technology Center for the Asian and Pacific Region, 2015. https://doi.org/10.56669/gkaa3619.

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"Current status of embryo transfer and in vitro embryo production using ovum pick-up in cattle." In Dairy herd improvement by the use of reproductive biotechnologies. Food and Fertilizer Technology Center for the Asian and Pacific Region, 2015. https://doi.org/10.56669/nhka2571.

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"Applied technology of OPU-IVF for livestock industry and early pregnancy diagnosis by ultrasonography in cattle." In Dairy herd improvement by the use of reproductive biotechnologies. Food and Fertilizer Technology Center for the Asian and Pacific Region, 2015. https://doi.org/10.56669/nlki8649.

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"The Reproductive Performance of Dairy Cattle in Smallholder Farmers." In Technology Innovations and Collaborations in Livestock Production for Sustainable Food Systems. IAARD Press, 2021. http://dx.doi.org/10.14334/proc.intsem.lpvt-2021-p.8.

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Silva, Isabela Gonçalves da, Lara Ellen Correa Nogueira Silva, Renata Vieira Chaves Gabriel, Alexandra Cristina Silva, and Sérgio Eustáquio Lemos da Silva. "Aspects of the epidemiological chain of bovine neosporosis and applications as a prophylaxis tool." In III SEVEN INTERNATIONAL MULTIDISCIPLINARY CONGRESS. Seven Congress, 2023. http://dx.doi.org/10.56238/seveniiimulti2023-183.

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Systemic parasitic infections are responsible for serious losses in agriculture. In the reproductive sphere of cattle farming, bovine neosporosis is described as one of the main diseases that causes abortions in cattle herds, generating considerable reproductive and, consequently, economic impacts on the Brazilian livestock sector. This disease is caused by the protozoan Neospora caninum, a coccid found in the form of tissue cysts and intracellular tachyzoites. This condition gives the parasite an efficient capacity for dissemination and transmission within cattle herds and can infect up to 90

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TRUKHACHEV, Vladimir, Sergey OLEYNIK, and Nikolay ZLYDNEV. "FEATURES OF THE KARYOTYPE OF NORTH CAUCASUS AYRSHIRE DAIRY CATTLE POPULATION: DEFECTS IN REPRODUCTIVE FUNCTIONS." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.141.

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One of the ways of improving the genotypes of dairy cattle in Russia is to increase the proportion of the Ayrshire breed, which can be justly claimed to be one of the best dairy breeds in the world. However, due to the prevalence of large-scale breeding technologies, which involves the use of a limited contingent of dairy cattle bulls, including but not limited to the Ayrshire breed, the emergence of new-born calves with various anomalies, including chromosomal, which commonly have a hereditary basis attributable to gene mutations have been observed. Given that the bulk of these anomalies are

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Reports on the topic "Dairy cattle reproduction"

1

Wolfenson, David, William W. Thatcher, Rina Meidan, Charles R. Staples, and Israel Flamenbaum. Hormonal and Nutritional Stretegies to Optimize Reproductive Function and Improve Fertility of Dairy Cattle during Heat Stress in Summer. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7568773.bard.

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The BARD program includes two main parts. In the first, experiments were conducted to complete our understanding of the mechanisms responsible for the impairment of reproductive functions under heat stress. Experiments focused on follicular development and function, since results obtained in our previous BARD project indicate that the preovulatory follicle is susceptible to heat stress. The theca cells, sensitive to thermal stress, produced less androgen during the summer, as well as during the autumn. Similarly, luteinized theca cells obtained from cows in summer produced much less progestero

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Butler, Walter R., Uzi Moallem, Amichai Arieli, Robert O. Gilbert, and David Sklan. Peripartum dietary supplementation to enhance fertility in high yielding dairy cows. United States Department of Agriculture, 2007. http://dx.doi.org/10.32747/2007.7587723.bard.

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Objectives of the project: To evaluate the effects of a glucogenic supplement during the peripartum transition period on insulin, hepatic triglyceride accumulation, interval to first ovulation, and progesterone profile in dairy cows. To compare benefits of supplemental fats differing in fatty acid composition and fed prepartum on hepatic triglyceride accumulation, interval to first ovulation, progesterone profile, and uterine prostaglandin production in lactating dairy cows. To assess the differential and carry-over effects of glucogenic and fat supplements fed to peripartum dairy cows on ster

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Bazer, Fuller W., Arieh Gertler, and Elisha Gootwine. Role of Placental Lactogen in Sheep. United States Department of Agriculture, 2001. http://dx.doi.org/10.32747/2001.7574339.bard.

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Central problems in sheep and dairy cattle production are reproductive failure due to embryonic/fetal mortality and low birth weights, especially in prolific breeds, and reduced milk yields which adversely affect neonatal survival and economy of production. The sheep placenta expresses lactogenic (ovine placental lactogen, oPL) and somatogenic (ovine placental growth hormone, oGH) hormones. Our research has focused on the biological roles of oPL and oGH in function of the uterine endometrium during gestation and the mammary gland during pregnancy and lactation. Major conclusions were that: ( 1

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