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Готові списки джерел за темами / Swine Reproduction / Статті в журналах

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Swine Reproduction.

Статті в журналах з теми "Swine Reproduction"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 20 лютого 2023

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1

Prodanov-Radulovic, Jasna, Radoslav Dosen, Igor Stojanov, Ivan Pusic, Milica Zivkov-Balos, and Radomir Ratajac. "Influence of mycotoxin zearalenone on the swine reproductive failure." Zbornik Matice srpske za prirodne nauke, no. 124 (2013): 121–29. http://dx.doi.org/10.2298/zmspn1324121p.

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Reproductive failure in swine is often a difficult diagnostic problem. If diagnoses of infectious disease or management related problems are not obtained, feed quality and safety may be questioned. Mycotoxins are often present in swine feed in the amount that can have detrimental impact on production and reproduction. Problems are expressed only as alterations of the reproductive cycle, reduced feed intake, slow growth or impaired feed efficiency. In Serbia, generally speaking, high concentrations of mycotoxins were noticed, especially mycotoxin zearalenone. High presence of zearalenone in swi

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2

Petrujkic, Tihomir. "New biotechnological procedures in swine reproduction." Veterinarski glasnik 56, no. 1-2 (2002): 111–23. http://dx.doi.org/10.2298/vetgl0202111p.

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New biotechnological procedures and the use of hormones in swine breeding are aimed at increasing the number of piglets in the litter. In small herds and groups, selected sows with 16 mammary complexes (tits) can yield up to 32 piglets, or porkers, per year per sow. In order to achieve such reproduction results, special, individual stalls for sow deliveries are used, in addition to biotechnological methods, with a warm core and floor heating, phased diet and clean facilities. The ovulation value in swine is determined by their genetic and paragenetic effects, and it is often provoked and incre

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3

Khulal, Aarati, Prativa Sharma, Asmin Khulal, and Surya Sharma Bhatta. "A REVIEW ARTICLE ON NON-GENETIC FACTORS AFFECTING REPRODUCTIVE TRAITS IN SWINE." Malaysian Animal Husbandry Journal 1, no. 2 (September 3, 2021): 71–76. http://dx.doi.org/10.26480/mahj.02.2021.71.76.

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This review studies several factors affecting the reproductive performance of swine chiefly focusing on sow-related factors, which have significant economic importance. A sow’s productivity is determined by different reproductive attributes, including litter size, litter weight at weaning, farrowing rate, the return of oestrus, and many more. The increase in number of pigs born alive and weaned piglets per sow is an aim for swine husbandry.Various factors such as parity, housing, feed, gestation length, season, and temperature are considered in this paper. Sows of differing parities have perfo

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4

Pressing, Anton L. "Pharmacologic Control of Swine Reproduction." Veterinary Clinics of North America: Food Animal Practice 8, no. 3 (November 1992): 707–23. http://dx.doi.org/10.1016/s0749-0720(15)30712-x.

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5

Rutledge, J. J. "Maternal Effects in Swine Reproduction." Biotechnology & Biotechnological Equipment 4, no. 5-6 (January 1990): 55–57. http://dx.doi.org/10.1080/13102818.1990.10818621.

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6

Kwit, Krzysztof, Małgorzata Pomorska-Mól, and Iwona Markowska-Daniel. "Infectious agents involved in reproduction failure in swine." Medycyna Weterynaryjna 72, no. 6 (2016): 345–51. http://dx.doi.org/10.21521/mw.5523.

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Problems in the reproduction of pigs may be the result of interaction of various factors, both infectious and non-infectious. Among the infectious agents, the greatest economic losses are caused by viral infection of pregnant gilts and sows. In the present study the most important pathogens causing reproductive disorders in pigs, including parvovirus (PPV), porcine reproductive and respiratory syndrome (PRRSV), swine influenza virus (SIV), porcine circovirus type 2 (PCV2), enteroviruses, encephalitis virus (EMCV), Aujeszky's disease virus (ADV), classical swine fever virus (CSFV), Leptospira s

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7

Dosen, Radoslav, Mladen Gagrcin, Jasna Prodanov, and Dusan Orlic. "Parvoviral Infections in Swine." Veterinarski glasnik 56, no. 1-2 (2002): 13–19. http://dx.doi.org/10.2298/vetgl0202013d.

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Viral infections hold an important place among factors which can cause disorders in swine reproduction. Infections with the porcine parvovirus (PPV) are present in all herds. In the past four years, 70-77% seropositive animals have been registered in herds of the industrial type. There are increasing reports about disorders in swine reproduction, both from individual breeders and mini farmers, caused by parvoviral infections. The objective of this work is to demonstrate the latest knowledge on epizootiology, pathogenesis, diagnostics, and prophylaxis of this diseases.

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8

Sabev, Zh. "PROLACTIN RECEPTOR GENE (PRLR) ROLE IN SWINE REPRODUCTION." Trakia Journal of Sciences 17, no. 1 (2019): 75–80. http://dx.doi.org/10.15547/tjs.2019.01.012.

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PRLR gene has been studied as a candidate gene for litter size in swine because of prolactin biological functions and their association with reproduction. Prolactin receptor gene is mapped on porcine chromosome 16. The established PCR-RFLP polymorphism at PRLR locus demonstrated the presence of two alleles, А and В and three genotypes АА, АВ and ВВ. There were found different allele and genotype frequencies in different pig populations with variation of the effects of PRLR genotypes on litter traits. Additional studies should be done in specific breeds and populations to evaluate the associati

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9

Belstra, Brad A. "483 Current Knowledge Gaps in Swine Reproduction." Journal of Animal Science 99, Supplement_3 (October 8, 2021): 212–13. http://dx.doi.org/10.1093/jas/skab235.386.

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Abstract Identifying swine reproduction research opportunities, especially those that add value by addressing industry challenges and leveraging assisted reproductive technologies (ART) will be the focus of this talk. ART and genetic selection to increase pork production efficiency have been intertwined since the use of artificial insemination (AI) became widely adopted 30 years ago. Tremendous efficiency gains have been made in part by increasing litter size which is nearly 6 to 7 pigs larger today than it was in 1990. The increased farrowing duration and stillbirths, and decreased piglet bir

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10

Austin, Adrian G., and Jeff G. Wiegert. "155 Opportunities and Challenges of Teaching Laboratory Content of a Swine Discipline-focused Course with Limited Swine Access." Journal of Animal Science 99, Supplement_1 (May 1, 2021): 143–44. http://dx.doi.org/10.1093/jas/skab054.244.

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Abstract In spring semester, 2020, ANSC 412: Swine Production and Management (4 credits, lecture and laboratory) was offered in the Department of Animal Science at Texas A&M University following a period of nonappearance in the curriculum. Simultaneously, planned renovation of the campus swine teaching farm required depopulation of the existing herd. Hence, animal access for course laboratories was restricted for the 2020 spring and fall semesters. The objective is to present strategies to achieve effective laboratory learning objectives with limited livestock access. Average course enroll

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11

Yeste, Marc. "Introduction to the special issue on swine reproduction." Theriogenology 85, no. 1 (January 2016): 2–3. http://dx.doi.org/10.1016/j.theriogenology.2015.10.024.

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12

Kauffold, Johannes, Olli Peltoniemi, Axel Wehrend, and Gary C. Althouse. "Principles and Clinical Uses of Real-Time Ultrasonography in Female Swine Reproduction." Animals 9, no. 11 (November 11, 2019): 950. http://dx.doi.org/10.3390/ani9110950.

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Within the past 30 years, through ongoing technology and portability developments, real-time (b-mode) ultrasonography (RTU) has increasingly become a valuable diagnostic tool in assessing the female reproductive tract in swine. Initially applied in swine production to visually determine pregnancy status, RTU use has expanded to include assessment of the peri-pubertal and mature non-pregnant females as well. Transabdominal and transrectal modalities to visualizing the reproductive tract in swine have been reported with the transabdominal approach more common due to the fact of its ease of acces

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13

Varatanovic, N., K. Amela, T. Mutevelic, B. Cengic, and N. Mlaco. "Folicular activity of ovaries in sows, crosses of Swedish Landrace and Large White in post partum and oestrus." Biotehnologija u stocarstvu 24, no. 3-4 (2008): 109–19. http://dx.doi.org/10.2298/bah0804109v.

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Swine breeding production as one of the most perspective branch in livestock farming require particular attention when it is about reproduction of the flock. Final goal of every swine breeding farm is of course to increase reproduction of the animals and ensure healthy progeny. Aim of our research was to on the basis of detailed microscopic analyze of the ovaries in researched periods and results obtained accelerate reproduction in swine breeding production and by that total flock craft. We have culled 36 sows cross breed of Swedish Landrace and Large White whose are breaded in farm conditions

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14

Wang, Bingyuan, Mingrui Zhang, Jingjing Che, Kui Li, Yulian Mu, and Zhiguo Liu. "Wild-type p53-induced phosphatase 1 (WIP1) regulates the proliferation of swine Sertoli cells through P53." Reproduction, Fertility and Development 32, no. 18 (2020): 1350. http://dx.doi.org/10.1071/rd20215.

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Wild-type p53-induced phosphatase 1 (WIP1) plays an oncogenic function by increasing cell proliferation in various cancer types. Deficiency in WIP1 expression leads to male infertility, possibly by impairing the blood–testis barrier and spermatogenesis. However, how WIP1 functions in the Sertoli cells to affect male reproduction remains unclear. Thus, in the present study we used a swine Sertoli cell line to investigate whether WIP1 regulated the proliferation of Sertoli cells to participate in male reproduction. The WIP1 inhibitor GSK2830371, WIP1-short interference (si) RNAs and an upstream

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15

Wei, Zhengkai, Tingting Yu, Jingjing Wang, Chaoqun Wang, Xiao Liu, Zhen Han, Xu Zhang, Yong Zhang, Hongsheng Ouyang, and Zhengtao Yang. "Swine sperm induces neutrophil extracellular traps that entangle sperm and embryos." Reproduction 160, no. 2 (August 2020): 217–25. http://dx.doi.org/10.1530/rep-19-0327.

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Sperm motility, fertilization and embryo implantation are several important factors in reproduction. Except healthy state of sperm and embryo themselves, successful pregnancy is closely related to the status of female reproductive tract immune system. Increased immune cells in reproductive tract often leads to low sperm motility and low chance of embryo implantation, but the mechanisms remain not well clarified. The aim of this study is to investigate the direct effects of swine polymorphonuclear neutrophils (PMNs) on sperm or embryo in vitro and then try to clarify the molecular mechanisms un

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16

Markova, E., L. Lyulkova, R. Melnik, and V. Popova. "Cultural properties of swine reproductive and respiratory syndrome virus isolate." Agrarian Bulletin of the 195, no. 4 (May 13, 2020): 71–77. http://dx.doi.org/10.32417/1997-4868-2020-195-4-71-77.

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Abstract. This article summarizes the results of a study of the cultural properties of the swine reproductive and respiratory syndrome virus isolate in transferable cultures of MA-104, PK-15, MARC-145 and Vero cells. The purpose of our research was to determine the sensitivity of cell culture lines to the swine reproductive and respiratory syndrome virus isolate, which is necessary for obtaining a highly active antigen as the main component of diagnostic and vaccine biologics. An isolate of the virus was isolated from a Piglet in the LPH of the Moscow region of the Kolomenskoye district. The i

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17

Petrovic, Milica, Milan Teodorovic, Dragan Radojkovic, and Ivan Radovic. "Variability of production characteristics of swine in farms in Serbia." Veterinarski glasnik 56, no. 1-2 (2002): 89–96. http://dx.doi.org/10.2298/vetgl0202089p.

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Work on pig enhancement will continue to deal with improving reproduction characteristics, growth characteristics, feed utilization, trunk and meat quality, and management confidence. On the one hand, adequate methods of quantitative and mollecular genetics will be used, and on the other there will be efforts to increase probability that genetic potential of the animal is exhibited in practical conditions. The objective of this work was to see how and to what extent genetic potential in swine is exhibited in practical conditions. The variability of production characteristics of swine in farms

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18

C., Soriano-Úbeda, Matás C., and García-Vázquez FA. "An overview of swine artificial insemination: Retrospective, current and prospective aspects." Journal of Experimental and Applied Animal Sciences 1, no. 1 (October 11, 2013): 67. http://dx.doi.org/10.20454/jeaas.2013.709.

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Assistant reproduction technologies are in constant evolution, among them the artificial insemination (AI). AI has been successfully used in pigs for decades, especially to improve boar efficienc and productivity. Lately, swine AI has taken on a new lease of life since efficient AI is essential for solving future challenges in the porcine industry and to enhance productivity. The present paper summarizes several factors concerning AI, starting with an overview of some physiological aspects including the female reproductive tract and sperm transport, as well as sperm losses during insemination

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19

Lindemann, M. D. "Supplemental folic acid: a requirement for optimizing swine reproduction." Journal of Animal Science 71, no. 1 (January 1, 1993): 239–46. http://dx.doi.org/10.2527/1993.711239x.

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20

Pena, F. J., J. C. Dominguez, and B. Alegre. "Effect of prostaglandin F2 on seasonality of swine reproduction." Veterinary Record 142, no. 8 (February 21, 1998): 194–95. http://dx.doi.org/10.1136/vr.142.8.194.

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21

Sinclair, A. G. "Ultrasonography and Reproduction in Swine: Principles and Practical Applications." Animal Reproduction Science 64, no. 1-2 (December 2000): 135. http://dx.doi.org/10.1016/s0378-4320(00)00199-8.

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22

Chuchard, Pearanat, Din Prathumwan, Kamonchat Trachoo, Wasan Maiaugree, and Inthira Chaiya. "The SLI-SC Mathematical Model of African Swine Fever Transmission among Swine Farms: The Effect of Contaminated Human Vector." Axioms 11, no. 7 (July 6, 2022): 329. http://dx.doi.org/10.3390/axioms11070329.

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In this paper, a mathematical model for African swine fever is modified by considering the swine farm with the contaminated human vector that is able to infect and spread the disease among swine farms. In the developed model, we have divided the swine farm density into three related groups, namely the susceptible swine farm compartment, latent swine farm compartment, and infectious swine farm compartment. On the other hand, the human vector population density has been separated into two classes, namely the susceptible human vector compartment and the infectious human vector compartment. After

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23

Ando, Imaeda, Matsubara, Takasu, Miyamoto, Oshima, Nishii, et al. "Genetic Association between Swine Leukocyte Antigen Class II Haplotypes and Reproduction Traits in Microminipigs." Cells 8, no. 8 (July 26, 2019): 783. http://dx.doi.org/10.3390/cells8080783.

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The effects of swine leukocyte antigen (SLA) molecules on numerous production and reproduction performance traits have been mainly reported as associations with specific SLA haplotypes that were assigned using serological typing methods. In this study, we intended to clarify the association between SLA class II genes and reproductive traits in a highly inbred population of 187 Microminipigs (MMP), that have eight different types of SLA class II haplotypes. In doing so, we compared the reproductive performances, such as fertility index, gestation period, litter size, and number of stillbirth am

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24

Mazloum, Ali, I. Yu Zhukov, A. S. Pershin, A. S. Igolkin, and N. N. Vlasova. "EFFECT OF p30 RECOMBINANT PROTEIN ON AFRICAN SWINE FEVER VIRUS IN VITRO REPRODUCTION." Veterinary Science Today, no. 3 (October 3, 2018): 3–7. http://dx.doi.org/10.29326/2304-196x-2018-3-26-3-7.

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African swine fever specific prevention means have not been developed yet. However, it is necessary to study the function of definite viral proteins, their role in immune response morphogenesis and induction to determine the components to be included into ASF protection drugs. It was established that p54 and p30 proteins participate in virus penetration and internalization and are able to induce protective antibodies in immunized pigs. The inoculation of these proteins into ASFV-infected cell culture has an impact on virus reproduction to different extents. The results of the study of purified

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25

Mahfuz, Shad, Hong-Seok Mun, Muhammad Ammar Dilawar, and Chul-Ju Yang. "Applications of Smart Technology as a Sustainable Strategy in Modern Swine Farming." Sustainability 14, no. 5 (February 23, 2022): 2607. http://dx.doi.org/10.3390/su14052607.

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The size of the pork market is increasing globally to meet the demand for animal protein, resulting in greater farm size for swine and creating a great challenge to swine farmers and industry owners in monitoring the farm activities and the health and behavior of the herd of swine. In addition, the growth of swine production is resulting in a changing climate pattern along with the environment, animal welfare, and human health issues, such as antimicrobial resistance, zoonosis, etc. The profit of swine farms depends on the optimum growth and good health of swine, while modern farming practices

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26

Kerr, J. C. "Report of the 1994 braude scholarship to the british society of animal science: improving reproductive performance in pigs." Proceedings of the British Society of Animal Science 1995 (March 1995): 13. http://dx.doi.org/10.1017/s1752756200590139.

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In recent years, the emphasis on reproductive performance in pigs has increased, although the favourable impact of improving reproductive performance on the overall efficiency of production has long been recognised. There is widespread agreement that increasing the number of pigs per sow per year should be a major objective of the pig industry, particularly as limits in fat reduction are approached. The 1994 British Society of Animal Science Braude Scholarship was used to investigate current research in the area of swine reproduction and identify particular areas of concern as perceived by the

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27

Kerr, J. C. "Report of the 1994 braude scholarship to the british society of animal science: improving reproductive performance in pigs." Proceedings of the British Society of Animal Science 1995 (March 1995): 13. http://dx.doi.org/10.1017/s0308229600027847.

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Анотація:

In recent years, the emphasis on reproductive performance in pigs has increased, although the favourable impact of improving reproductive performance on the overall efficiency of production has long been recognised. There is widespread agreement that increasing the number of pigs per sow per year should be a major objective of the pig industry, particularly as limits in fat reduction are approached. The 1994 British Society of Animal Science Braude Scholarship was used to investigate current research in the area of swine reproduction and identify particular areas of concern as perceived by the

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28

Markowska-Daniel, Iwona, Karol Wierzchosławski, Kinga Urbaniak, and Aandrzej Kowalczyk. "First Isolation of the H1N2 Swine Influenza Virus in Polish Pig Farm." Bulletin of the Veterinary Institute in Pulawy 57, no. 1 (March 1, 2013): 9–14. http://dx.doi.org/10.2478/bvip-2013-0002.

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Abstract The paper describes an outbreak of swine influenza, which was the first H1N2 outbreak confirmed in pig farm in Poland. The outbreak occurred in October 2011 in the farrows to finish farm, first in the fattening units, and subsequently in the reproduction and weaning sectors. Samples of the lungs taken from dead gilts were tested by the use of real time and multiplex PCR, sequencing, and virus isolation methods. The amplification of the genetic material extracted from the lungs confirmed the presence of the M1 gene sequence of type A influenza virus. Using multiplex PCR, the bands of 2

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29

Ziemak, J., and W. Grzesiak. "Associations between polymorphism of the steroid 21-hydroxylase gene (<i>CYP21</i>) and litter size of Polish Large White × Polish Landrace sows* (short communication)." Archives Animal Breeding 49, no. 2 (October 10, 2006): 158–64. http://dx.doi.org/10.5194/aab-49-158-2006.

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Abstract. research because of the large economic impact these discoveries could have on the swine industry. The steroid 21-hydroxylase (CYP21) gene is located on chromosome 7 in the middle of the swine leukocyte antigen class (SLA) is regarded as a "candidate – gene" reproduction traits. Associations between polymorphism of the steroid 21-hydroxylase gene (CYP21) and litter size of Polish Large White × Polish Landrace sows were analysed. The 21-hydroxylase genotypes of all 286 animals were determined using a PCR-RFLP procedure. The frequencies of genotypes and alleles of CYP21/NciI and CYP21/H

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30

Ross, Jason W., Benjamin J. Hale, Jacob T. Seibert, Matthew R. Romoser, Malavika K. Adur, Aileen F. Keating, and Lance H. Baumgard. "208 Molecular mechanisms through which heat stress compromises reproduction in pigs." Journal of Animal Science 97, Supplement_2 (July 2019): 120. http://dx.doi.org/10.1093/jas/skz122.212.

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Abstract Seasonal variations in environmental temperatures impose added stress on domestic species bred for economically important production traits. These heat-mediated stressors vary on a seasonal, daily, or spatial scale, and negatively impact behavior and reduce feed intake and growth rate, which inevitably leads to reduced herd productivity. The seasonal infertility observed in domestic swine is primarily characterized by depressed reproductive performance manifesting as delayed puberty onset, reduced farrowing rates, and extended weaning-to-estrus intervals. Understanding the effects of

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31

Parra-Aguirre, Juan, Roman Nosach, Champika Fernando, Janet E. Hill, Heather L. Wilson, and John C. S. Harding. "Experimental natural transmission (seeder pig) models for reproduction of swine dysentery." PLOS ONE 17, no. 9 (September 27, 2022): e0275173. http://dx.doi.org/10.1371/journal.pone.0275173.

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Swine dysentery is causally associated with Brachyspira hampsonii and B. hyodysenteriae infection. Given the importance of transmission models in understanding re-emergent diseases and developing control strategies such as vaccines, the objective of this experiment was to evaluate two experimental natural transmission (seeder pig) models in grower pigs, each with 24 animals. Seeder pigs were intragastrically inoculated using broth cultures of either B. hampsonii strain 30446 (genomovar II) or B. hyodysenteriae strain G44. In trial 1, three seeder pigs were placed into two pens containing nine

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32

Kirkpatrick, B. W., and J. J. Rutledge. "Influence of Prenatal and Postnatal Fraternity Size on Reproduction in Swine." Journal of Animal Science 66, no. 10 (1988): 2530. http://dx.doi.org/10.2527/jas1988.66102530x.

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33

Goodband, R. D., M. D. Tokach, M. A. D. Goncalves, J. C. Woodworth, S. S. Dritz, and J. M. DeRouchey. "Nutritional enhancement during pregnancy and its effects on reproduction in swine." Animal Frontiers 3, no. 4 (October 1, 2013): 68–75. http://dx.doi.org/10.2527/af.2013-0036.

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34

De Rensis, F., R. Saleri, P. Tummaruk, M. Techakumphu та R. N. Kirkwood. "Prostaglandin F2α and control of reproduction in female swine: A review". Theriogenology 77, № 1 (січень 2012): 1–11. http://dx.doi.org/10.1016/j.theriogenology.2011.07.035.

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35

Yang, H. H., R. J. Aulerich, W. Helferich, B. Yamini, K. C. Chou, E. R. Miller, and S. J. Bursian. "Effects of zearalenone and/or tamoxifen on swine and mink reproduction." Journal of Applied Toxicology 15, no. 3 (May 1995): 223–32. http://dx.doi.org/10.1002/jat.2550150314.

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36

Rypula, K., A. Kumala, P. Lis, K. Niemczuk, K. Płoneczka-Janeczko, and Z. Pejsak. "Rapid detection of Chlamydia/Chlamydophila group in samples collected from swine herds with and without reproductive disorders." Polish Journal of Veterinary Sciences 17, no. 2 (June 1, 2014): 367–69. http://dx.doi.org/10.2478/pjvs-2014-0052.

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Анотація:

Abstract The study was carried out in seven reproductive herds of pigs. In three of them reproductive disorders were observed. Three herds consisted of 10-50 and four consisted of 120-500 adult sows and they were called small and medium, respectively. Fifty-seven adult sows were randomly selected from herds. Serum samples were tested using the complement fixation test and swabs from both eyes and from the vaginal vestibule were examined using real-time PCR. All serum samples were negative. Infected sows were present in each of the study herds. In total, there were 28 positive samples (53%, 28/

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37

Ando, Asako, Tatsuya Matsubara, Shingo Suzuki, Noriaki Imaeda, Masaki Takasu, Atsuko Shigenari, Asuka Miyamoto, et al. "Genetic Association between Farrowing Rates and Swine Leukocyte Antigen Alleles or Haplotypes in Microminipigs." Cells 11, no. 19 (October 5, 2022): 3138. http://dx.doi.org/10.3390/cells11193138.

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We have previously reported specific swine leukocyte antigen (SLA) haplotype associations with significant effects on several reproduction performance traits in a highly inbred miniature pig population of Microminipigs (MMPs). In this study, to clarify the effects on farrowing rates of SLA similarity between mating partners in the MMP population, we compared the farrowing rates as a measure of reproductive success after 1063-cumulative matings among the following three groups of mating partners: (1) completely sharing SLA class I or class II haplotypes or alleles between partners (CS), (2) onl

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38

Honeyman, Mark S. "Västgötmodellen: Sweden's sustainable alternative for swine production." American Journal of Alternative Agriculture 10, no. 3 (September 1995): 129–32. http://dx.doi.org/10.1017/s0889189300006305.

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Анотація:

AbstractIn a harsh, northern climate and under restrictive animal welfare laws and a strict ban on the use of subtherapeutic antibiotics, Swedish pig farmers have developed a managementintensive system of pig production that relies on straw, the animals' natural behavior, group housing dynamics, and keen husbandry skills. The system is very efficient, with excellent pig reproduction and growth performance. The housing is simple and versatile. Called “Västgötmodellen” after the region in western Sweden where it was developed by farmers during the 1980s, the system now is successfully used on ap

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39

Chew, Boon P. "Effects of supplemental β-carotene and vitamin A on reproduction in swine". Journal of Animal Science 71, № 1 (1 січня 1993): 247–52. http://dx.doi.org/10.2527/1993.711247x.

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40

Humpolíček, Petr, Zdeněk Tvrdoň, and Tomáš Urban. "Breeding for reproduction traits in context of multiplication herds efficiency in swine." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 61, no. 3 (2013): 647–50. http://dx.doi.org/10.11118/actaun201361030647.

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Presented study is a follow-up to the studies focused on effect of different selection pressure applied on two subpopulations of purebred Czech Large White sows on performance in multiplication herds. Higher selection pressure particularly on litter size and number of function nipples, while lower pressure on growth performance was applied in one population. About 1214 farrows of 393 F1 Czech Large White sows were included into statistical evaluation. The mixed linear models using the procedure REML in SAS for Windows 9.1.2. was used. The hypothesis that progeny of sows from hyper-prolific sub

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41

GAUTSCHI, C., and C. GAILLARD. "Influence of major histocompatibility complex on reproduction and production traits in swine." Animal Genetics 21, no. 2 (April 1990): 161–70. http://dx.doi.org/10.1111/j.1365-2052.1990.tb03221.x.

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42

Mayorga, E. J., J. W. Ross, A. F. Keating, R. P. Rhoads, and L. H. Baumgard. "Biology of heat stress; the nexus between intestinal hyperpermeability and swine reproduction." Theriogenology 154 (September 2020): 73–83. http://dx.doi.org/10.1016/j.theriogenology.2020.05.023.

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43

DeRouchey, Joel M., Mike D. Tokach, Robert D. Goodband, Jason C. Woodworth, Steve S. Dritz, and Mariana Boscato Menegat. "27 Defining a robust sow: swine nutrition perspective on reproduction and lactation." Journal of Animal Science 97, Supplement_2 (July 2019): 13. http://dx.doi.org/10.1093/jas/skz122.023.

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Анотація:

Abstract Improvements in modern sow prolificacy have markedly increased the number of pigs weaned, thus the ability of sows to provide nutrients to support fetal growth and milk production has been enhanced. The goals of the gestation nutrition program consist of meeting the nutrient requirements for maintenance and growth and for adequate conceptus development, while managing body condition. Early gestation represents the best opportunity for replenishing body reserves, whereas in late gestation, both estimated protein deposition and energy requirement are exponentially increased and directed

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44

KLINKENBERG, D., J. DE BREE, H. LAEVENS, and M. C. M. DE JONG. "Within- and between-pen transmission of Classical Swine Fever Virus: a new method to estimate the basic reproduction ratio from transmission experiments." Epidemiology and Infection 128, no. 2 (April 2002): 293–99. http://dx.doi.org/10.1017/s0950268801006537.

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We present a method to estimate basic reproduction ratio R0 from transmission experiments. By using previously published data of experiments with Classical Swine Fever Virus more extensively, we obtained smaller confidence intervals than the martingale method used in the original papers. Moreover, our method allows simultaneous estimation of a reproduction ratio within pens R0w and a modified reproduction ratio between pens R′0b. Resulting estimates of R0w and R′0b for weaner pigs were 100 (95% CI 54·4–186) and 7·77 (4·68–12·9), respectively. For slaughter pigs they were 15·5 (6·20–38·7) and 3

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45

Kirkwood, R. N., A. J. Peacock, and P. A. Thacker. "The influence of growth hormone injections either pre- or post-breeding on the reproductive performance of sows and gilts." Canadian Journal of Animal Science 73, no. 2 (June 1, 1993): 259–65. http://dx.doi.org/10.4141/cjas93-028.

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Анотація:

Two experiments were conducted to examine the effect of porcine growth hormone (pGH) injections on reproductive performance of swine. In exp. 1, 62 mixed-parity Yorkshire × Land-race sows received 6 mg of pGH either daily (n = 20) or on alternate days (n = 20) from 2 d preweaning until 4 d postweaning, with remaining sows (n = 22) serving as controls. A single blood sample was obtained from each sow prior to the first injection, at weaning and at 4 d postweaning and samples were assayed for insulin, IGF-I and triiodothyronine (T3). Serum insulin tended (P = 0.1) to be higher at 4 d postweaning

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46

MASUDA, Hiroshi. "Retrospection of swine science research in Japan. Reproduction, egg transfer and artificial insemination." Nihon Yoton Gakkaishi 31 (1994): 23–27. http://dx.doi.org/10.5938/youton.31.suppl_23.

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47

Ciornei, Ştefan, Dan Drugociu, Liliana Margareta Ciornei, Mihai Mareş, and Petru Roşca. "Total Aseptization of Boar Semen, to Increase the Biosecurity of Reproduction in Swine." Molecules 26, no. 20 (October 13, 2021): 6183. http://dx.doi.org/10.3390/molecules26206183.

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Анотація:

The aim of the study was to establish the complete microbiological profile of boar semen (Sus scrofa domesticus) and to choose the most effective antiseptic measures in order to control and optimize AI reproduction in pig farms. One hundred and one semen samples were collected and analyzed from several pig farms. The microbiological profile of ejaculates was determined by evaluating the degree of contamination of fresh semen and after dilution with specific extenders. The bacterial and fungal load of fresh boar semen recorded an average value of 82.41/0.149 × 103 CFU/mL, while after diluting t

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48

Ciornei, Ştefan, Dan Drugociu, Liliana Margareta Ciornei, Mihai Mareş, and Petru Roşca. "Total Aseptization of Boar Semen, to Increase the Biosecurity of Reproduction in Swine." Molecules 26, no. 20 (October 13, 2021): 6183. http://dx.doi.org/10.3390/molecules26206183.

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Анотація:

The aim of the study was to establish the complete microbiological profile of boar semen (Sus scrofa domesticus) and to choose the most effective antiseptic measures in order to control and optimize AI reproduction in pig farms. One hundred and one semen samples were collected and analyzed from several pig farms. The microbiological profile of ejaculates was determined by evaluating the degree of contamination of fresh semen and after dilution with specific extenders. The bacterial and fungal load of fresh boar semen recorded an average value of 82.41/0.149 × 103 CFU/mL, while after diluting t

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49

SATOH, Masahiro. "Improving management for higher reproduction accelerates genetic improvement in closed herd of swine." Animal Science Journal 75, no. 6 (December 2004): 499–502. http://dx.doi.org/10.1111/j.1740-0929.2004.00219.x.

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50

MacLeod, D. L., C. L. Gyles, and B. P. Wilcock. "Reproduction of Edema Disease of Swine with Purified Shiga-like Toxin-II Variant." Veterinary Pathology 28, no. 1 (January 1991): 66–73. http://dx.doi.org/10.1177/030098589102800109.

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