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Effects Of Sow Vocalization And Scent On Complete Blood Cell Count During Early Weaning Period, Mason Paladino

Biological Sciences Undergraduate Honors Theses

Piglets are deprived of their sows’ touch, sound, and smell after weaning which results in biological stress. The present study investigated continuing exposure of sow vocalization and scent during the early weaning period on complete blood cell count. A total of 12 litters, 8 piglets (4 male and 4 female) per litter were selected at weaning and assigned to 1 of 4 experimental treatments: control, O (olfactory group with scent and no vocal stimulation), V (non-olfactory with vocal stimulation), VO (vocal stimulation and olfactory stimulation) as a 2x2 factorial arrangement. Vocal stimulation was emulated by an audio recording of the …

Localization Of Kisspeptin, Nkb, And Nk3r In The Hypothalamus Of Gilts Treated With The Progestin Altrenogest, Ashley N. Lindo, Jennifer F. Thorson, Michelle N. Bedenbaugh, Richard B. Mccosh, Justin A. Lopez, Samantha A. Young, Lanny J. Meadows, Elizabeth C. Bowdridge, Chrysanthi Fergani, Bradley A. Freking, Michael N. Lehman, Stanley M. Hileman, Clay A. Lents

Roman L. Hruska U.S. Meat Animal Research Center: Reports

Mechanisms in the brain controlling secretion of gonadotropin hormones in pigs, particularly luteinizing hormone (LH), are poorly understood. Kisspeptin is a potent LH stimulant that is essential for fertility in many species, including pigs. Neurokinin B (NKB) acting through neurokinin 3 receptor (NK3R) is involved in kisspeptin-stimulated LH release, but organization of NKB and NK3R within the porcine hypothalamus is unknown. Hypothalamic tissue from ovariectomized (OVX) gilts was used to determine the distribution of immunoreactive kisspeptin, NKB, and NK3R cells in the arcuate nucleus (ARC). Almost all kisspeptin neurons coexpressed NKB in the porcine ARC. Immunostaining for NK3R was distributed …

Reference Transcriptomes Of Porcine Peripheral Immune Cells Created Through Bulk And Single-Cell Rna Sequencing, Juber Herrera-Uribe, Jayne E. Wiarda, Sathesh K. Sivasankaran, Lance Daharsh, Haibo Liu, Kristen A. Byrne, Timothy P. L. Smith, Joan K. Lunney, Crystal L. Loving, Christopher Tuggle

Roman L. Hruska U.S. Meat Animal Research Center: Reports

Pigs are a valuable human biomedical model and an important protein source supporting global food security. The transcriptomes of peripheral blood immune cells in pigs were defined at the bulk cell-type and single cell levels. First, eight cell types were isolated in bulk from peripheral blood mononuclear cells (PBMCs) by cell sorting, representing Myeloid, NK cells and specific populations of T and B-cells. Transcriptomes for each bulk population of cells were generated by RNA-seq with 10,974 expressed genes detected. Pairwise comparisons between cell types revealed specific expression, while enrichment analysis identified 1,885 to 3,591 significantly enriched genes across all 8 …

A Framework For Surveillance Of Emerging Pathogens At The Human-Animal Interface: Pigs And Coronaviruses As A Case Study, Kim M. Pepin, Ryan S. Miller, Mark Q. Wilber

USDA Wildlife Services: Staff Publications

Pigs (Sus scrofa) may be important surveillance targets for risk assessment and risk-based control planning against emerging zoonoses. Pigs have high contact rates with humans and other animals, transmit similar pathogens as humans including CoVs, and serve as reservoirs and intermediate hosts for notable human pandemics. Wild and domestic pigs both interface with humans and each other but have unique ecologies that demand different surveillance strategies. Three fundamental questions shape any surveillance program: where, when, and how can surveillance be conducted to optimize the surveillance objective? Using theory of mechanisms of zoonotic spillover and data on risk factors, …

Effects Of Providing A Liquid Sensory Attractant To Suckling Pigs In Lactation And After Weaning On Post-Weaning Pig Performance, Madie R. Wensley, Ty Kim, Mike D. Tokach, Robert D. Goodband, Jason C. Woodworth, Joel M. Derouchey, Denny Mckilligan, Nathan Upah, Jordan T. Gebhardt

Kansas Agricultural Experiment Station Research Reports

A total of 28 litters (241 × 600, DNA) corresponding with 355 nursery pigs (241 × 600, DNA; initially 13.0 lb) were used in 42-d trial (17-d pre-weaning and 24-d post-weaning). This trial was conducted to determine the effect of providing a sensory attractant liquid (BlueLite Pro2Lyte; TechMix Global; Stewart, MN) to suckling pigs on the underline of sows after farrowing and in late lactation, and after weaning on post-weaning feed intake and growth. Treatments were arranged in a 2 × 2 × 2 factorial with main effects of: 1) pre-weaning treatment (without or with attractant); 2) postweaning treatment (without …

Effect Of Floor Feeding Creep Feed On The Growth Performance And Mortality Of Pigs After Weaning, Madie R. Wensley, Mike D. Tokach, Robert D. Goodband, Jordan T. Gebhardt, Jason C. Woodworth, Joel M. Derouchey, Matt Allerson, Mariana Menegat, Andy Boeschert

Kansas Agricultural Experiment Station Research Reports

A total of 264 litters (PIC × Duroc (n = 180) or Choice Genetics × Duroc (n = 84)) corresponding to 2,497 nursery pigs were used in a 40-d trial (4-d pre-weaning and 36-d post-weaning) to determine the effect of floor feeding different pellet sizes of creep feed or lactation feed on the growth performance and mortality of pigs after weaning. Treatments were applied in the farrowing house for 4 d prior to weaning and consisted of a control (no creep feed), standard (1/8 in.) creep pellet, large (1/2 in.) creep pellet, or sow lactation feed. For each treatment, approximately …

Effects Of Providing Enrichment Cubes To Suckling Pigs In Late Lactation And After Weaning On Post-Weaning Pig Performance, Madie R. Wensley, Mike D. Tokach, Robert D. Goodband, Jordan T. Gebhardt, Jason C. Woodworth, Joel M. Derouchey, Denny Mckilligan, Nathan Upah

Kansas Agricultural Experiment Station Research Reports

A total of 28 litters (241 × 600, DNA) and 356 nursery pigs (241 × 600, DNA; initially 12.5 lb) were used in 28-d trial (4-d pre-weaning and 24-d post-weaning) to determine the effect of providing enrichment cubes (supersized pellets that resemble cattle cubes and range in size from 1.1 to 2.0 in. in length and 0.6 to 0.8 in. in diameter) to suckling pigs in late lactation and after weaning on post-weaning feed intake and growth. Treatments were arranged in a 2 × 2 × 2 factorial with main effects of: 1) pre-weaning treatment (without or with enrichment cubes); …

Effects Of Providing A Sensory Attractant Powder To Suckling Pigs In Late Lactation And After Weaning On Post-Weaning Pig Performance, M. R. Wensley, Mike D. Tokach, Robert D. Goodband, Jordan T. Gebhardt, Jason C. Woodworth, Joel M. Derouchey, Denny Mckilligan, Nathan Upah

Kansas Agricultural Experiment Station Research Reports

A total of 28 litters (241 × 600, DNA) and 355 nursery pigs (241 × 600, DNA; initially 12.2 lb) were used in a 29-d trial (4 d pre-weaning and 29 d post-weaning). The trial was conducted to determine the effect of providing a sensory attractant powder (Baby Pig Restart APF; TechMix Global; Stewart, MN) to suckling pigs in late lactation and after weaning on post-weaning feed intake and growth. Treatments were arranged in a 2 × 2 × 2 factorial with main effects of: 1) pre-weaning treatment (without or with powder); 2) post-weaning treatment (without or with powder); and …

Effects Of Mat Feeding On The Growth Performance And Mortality Of Pigs After Weaning, Madie R. Wensley, Mike D. Tokach, Robert D. Goodband, Jordan T. Gebhardt, Jason C. Woodworth, Joel M. Derouchey, Matt Allerson, Mariana Menegat

Kansas Agricultural Experiment Station Research Reports

Three experiments were conducted to determine the effect of different mat feeding strategies on the growth performance and morbidity and mortality of pigs after weaning. Upon arrival to the nursery facility, pigs were randomized to pen. A total of 96 pens (48 feeders) with 30 to 35 pigs/pen were used for each experiment, with one barrow pen and one gilt pen per feeder. Thus, feeder (2 pens) was the experimental unit. Feeders were then blocked by group (date of placement) and randomly allotted to treatment. In Exp. 1, treatments consisted of two feed management strategies; mat feeding vs. no mat …

Regression-Derived Ileal Endogenous Amino Acid Losses In Broiler Chickens And Cannulated Pigs Fed Corn Fiber, Wheat Bran, And Pectin, Sunday A. Adedokun, Olayiwola Adeola

Animal and Food Sciences Faculty Publications

The objective of these studies was to determine the effect corn fiber (CF), wheat bran (WB) and pectin (PEC) on basal ileal endogenous amino acid (EAA) losses in broiler chickens (Exp. 1) and cannulated pigs (Exp. 2) using the regression method. Semi-purified diets containing 100 g/kg of CF, WB, or PEC (broiler chickens) and CF or PEC (pigs) were fed to replicate cages consisting of eight birds per cage of 21-d-old broiler chickens and six replicates of pigs consisting of one pig per pen. Ileal endogenous His, Glu, and Pro losses were higher (p < 0.05) for CF and WB compared with birds fed diets containing PEC. Contrasts between CF and WB showed higher (p < 0.05) ileal endogenous nitrogen, total amino acid, His, Ile, Met, Glu, Pro, and Tyr losses in birds fed the CF diets (Exp. 1). Contrasts of EAA losses between birds fed the WB and PEC diets showed higher (p < 0.05) losses for His, Glu, and Pro. In the cannulated pigs, CF resulted in higher (p < 0.05) ileal endogenous His, Leu, and Tyr losses. In summary, CF induced higher ileal EAA losses in broiler chickens and cannulated pigs.

Effects Of Iron Injection Timing On Suckling And Subsequent Nursery And Growing-Finishing Performance And Hematological Criteria Under Commercial Conditions, H. E. Williams, B. Carrender, R. Maurer, J. M. Derouchey, J. C. Woodworth, S. S. Dritz, M. D. Tokach, R. D. Goodband, A. J. Holtcamp, K. F. Coble

Kansas Agricultural Experiment Station Research Reports

A total of 1,892 newborn pigs (PIC 359 × C40; initially 3.3 lb body weight [BW]) within 172 litters were used in a 168-d study to evaluate the effects of Fe injection timing after birth on suckling and subsequent nursery and growing-finishing growth performance and hematological criteria. One day after birth, piglets were weighed, and 11 pigs within each litter were allotted to 1 of 6 treatments consisting of no Fe injection or 200 mg of injectable Fe provided on d 1, 3, 5, or 7 of age, or 200-mg on d 1 plus 200-mg on d 12 of age. …

Influence Of Enogen Feed Corn And Conventional Yellow Dent Corn In Pelleted- Or Meal-Based Diets On Finishing Pig Performance And Carcass Characteristics, H. R. Williams, M. D. Tokach, J. C. Woodworth, R. D. Goodband, J. M. Derouchey, S. S. Dritz, C. B. Paulk, H. K. Wecker, H. I. Calderón

Kansas Agricultural Experiment Station Research Reports

A total of 288 pigs (DNA 241 × 600; initially 117 lb) were used in a 72-d trial to evaluate the influence of Enogen Feed corn (Enogen, Syngenta Seeds, LLC; Downers Grove, IL) and conventional yellow dent corn in pelleted or meal diets on finishing pig performance and carcass characteristics. Pigs were randomly assigned to pens (8 pigs per pen) and pens were allotted by weight to 1 of 4 dietary treatments in a randomized complete block design with 9 pens per treatment. Treatments were arranged in a 2 × 2 factorial with main effects of corn source (Enogen Feed …

Determining The Phosphorus Release Curve For Smizyme Ts G5 2,500 Phytase In Nursery Pigs, M. R. Wensley, J. C. Woodworth, J. M. Derouchey, S. S. Dritz, M. D. Tokach, R. D. Goodband, H. I. Calderón, J. M. Faser, B. L. Guo

Kansas Agricultural Experiment Station Research Reports

A total of 280 nursery pigs (DNA 241 × 600, initially 22.8 lb) were used in a 21-d growth trial to determine the available P (aP) release curve for Smizyme TS G5 2,500 (Origination, LLC., Maplewood, MN). Pigs were weaned at approximately 21 d of age, randomly allotted to pens based on initial body weight (BW), and fed common starter diets. On d 21 post-weaning, considered d 0 of the study, pens were blocked by BW and randomly allotted to 1 of 7 dietary treatments with 5 pigs per pen and 8 pens per treatment. Seven 1-ton batches of basal …

Computational Integration Of Structural And Functional Genomics Data Across Species To Develop Information On The Porcine Inflammatory Gene Regulatory Pathway, C. K. Tuggle, Y. F. Wang, O. P. Couture, L. Qu, J. J. Uthe, D. Kuhar, J. K. Lunney, D. Nettleton, J. C. Dekkers, S. M. D. Bearson

Dan Nettleton

We are investigating the porcine gut immune response to infection through gene expression profiling. Porcine Affymetrix GeneChip data was obtained from RNA prepared from mesenteric lymph node of swine infected with either Salmonella enterica serovar Typhimurium (ST) or S. Choleraesuis (SC) for 0, 8, 24, 48 or 504 hours post-inoculation (hpi). In total, 2,365 genes with statistical evidence for differential expression (DE; p < 0.01, q < 0.26, fold-change> 2) between at least two time-points were identified. Comparative Gene Ontology analyses revealed that a high proportion of annotated DE genes in both infections are involved in immune and defence responses. Hierarchical clustering of expression patterns and …

Evaluation Of Genotype Quality Parameters For Sowpro90, A New Genotyping Array For Swine, Hiruni R. Wijesena, Gary A. Rohrer, Dan J. Nonneman, Brittney N. Keel, Jessica L. Petersen, Stephen D. Kachman, Daniel C. Ciobanu

Department of Animal Science: Faculty Publications

Understanding early predictors of sow fertility has the potential to improve genomic predictions. A custom SNP array (SowPro90 produced by Affymetrix) was developed to include genetic variants overlapping quantitative trait loci for age at puberty, one of the earliest indicators of sow fertility, as well as variants related to innate and adaptive immunity. The polymorphisms included in the custom genotyping array were identified using multiple genomic approaches including deep genomic and transcriptomic sequencing and genome-wide associations. Animals from research and commercial populations (n = 2,586) were genotyped for 103,476 SNPs included in SowPro90. To assess the quality …

Polymorphisms Of Exon 10 In The Bpi Gene And Its Association Analysis With Some Reproductive Traits And Partial Immune Indexes In Meishan Pigs, Huan Qu, Zongyou Wei, Lan Ye, Shenglong Wu, Wenbin Bao

Turkish Journal of Veterinary & Animal Sciences

This study was conducted to detect polymorphisms of BPI gene exon 10 by PCR-RFLP in Meishan pigs and their associations with some important cytokine levels (IL-1ß, IL-4, IL-6, IL-8, IL-10, TGF-1ß, IFN-γ, TNF-α) and reproductive traits (total number born (TNB), number born alive (NBA), birth litter weight (BLW), and weaning litter weight (WLW)), with the aim of identifying effective genetic markers for molecular breeding. The results revealed three genotypes, including AA, AB, and BB, with the trend of AA > BB > AB in reproductive traits. Pigs with the AA genotype were significantly higher than the AB genotype in TNB and IFN-γ …

Assessing The Effects Of Genetic Selection For Porcine Circovirus Type 2 Resistance Or Feed Additives On Nursery And Grow-Finish Pig Performance, Dana Van Sambeek

Department of Animal Science: Dissertations, Theses, and Student Research

The swine industry is ever evolving as it strives to produce healthy, wholesome pork for consumers. As such, the industry is constantly looking for ways to improve production and reduce costs. This includes using novel feed ingredients to reduce cost and improve animal health, genetic selection for increased performance, and vaccines to attenuate or prevent illness. Research plays a significant role in assessing the effectiveness of these strategies. Overall, the objective of this thesis was to assess how genetic selection, vaccines, and feed additives may impact growth performance, health, nutrient digestibility, and the microbiome.

In Chapter 2, pigs were either …

Endometrial Response To Conceptus-Derived Estrogen And Interleukin-1Β At The Time Of Implantation In Pigs, Hakhyun Ka, Heewon Seo, Yohan Choi, Inkyu Yoo, Jisoo Han

Obstetrics and Gynecology Faculty Publications

The establishment of pregnancy is a complex process that requires a well-coordinated interaction between the implanting conceptus and the maternal uterus. In pigs, the conceptus undergoes dramatic morphological and functional changes at the time of implantation and introduces various factors, including estrogens and cytokines, interleukin-1β2 (IL1B2), interferon-γ (IFNG), and IFN-δ (IFND), into the uterine lumen. In response to ovarian steroid hormones and conceptus-derived factors, the uterine endometrium becomes receptive to the implanting conceptus by changing its expression of cell adhesion molecules, secretory activity, and immune response. Conceptus-derived estrogens act as a signal for maternal recognition of pregnancy by changing the …

Study On The Relationship Between Expression Patterns Of Cocaine-And Amphetamine Regulated Transcript And Hormones Secretion In Porcine Ovarian Follicles, Pengfei Li, Jinzhu Meng, Jiongjie Jing, Qingling Hao, Zhiwei Zhu, Jianbo Yao, Lihua Lyu

Faculty & Staff Scholarship

Background: Cocaine-and amphetamine regulated transcript (CART) is an endogenous neuropeptide, which is widespread in animals, plays a key role in regulation of follicular atresia in cattle and sheep. Among animal ovaries, CART mRNA was firstly found in the cattle ovaries. CART was localized in the antral follicles oocytes, granulosa and cumulus cells by immunohistochemistry and in situ hybridization. Further research found that secretion of E2 was inhibited in granulosa cells with a certain dose of CART, the effect depends on the stage of cell differentiation, sug- gesting that CART could play a crucial role in regulating follicle atresia. The objective …

Evaluating Medium Chain Fatty Acids As An Alternative To Chlortetracycline In Nursery Pig Diets, R. A. Cochrane, J. R. Pluske, J. P. Mansfield, S. S. Dritz, J. C. Woodworth, M. D. Tokach, M. C. Niederwerder, C. B. Paulk, C. K. Jones

Kansas Agricultural Experiment Station Research Reports

An experiment was conducted to evaluate medium chain fatty acids (MCFA) as a potential alternative to chlortetracycline (CTC) in nursery pigs. One hundred entire male pigs (initially 14.1 ± 1.6 lb body weight (BW) and weaned at 22 d of age) were used in a 29-d disease challenge study. Pigs were allowed 5 acclimation days after weaning, followed by 2 d of disease challenge with Enterotoxigenic β-hemolyticEscherichia coli(ETEC), serotype O149:K91: K88. After the challenge, pigs were allotted to a diet with 1 of 5 treatments: 1) control with no additives; 2) 400 g/ton CTC (Chlortet 200G, Eco Animal …

Evaluation Of An Essential Oil Blend And A Novel Soybean Variety As Alternatives To Preventative Antibiotic Use In Monogastrics, Samantha Tauer

Electronic Theses and Dissertations

Increasing consumer pressure to minimize antibiotic use and the implementation of the Veterinary Feed Directive in 2017 has increased research on alternatives to preventative antibiotics. This thesis focuses on evaluation of Ralco’s Microfused™ Essential Oils (MEO) fed to broilers and soybean meal from low allergenicity soybeans fed to weaned pigs and their potential use as alternatives to antibiotics. Essential oils are known to have antimicrobial, antioxidant, antiparasitic, and digestive stimulant effects. Low allergenicity (LA) soybeans were bred to contain significantly lower concentrations of the following anti-nutritional factors and allergenic proteins: Kunitz trypsin inhibitor, soybean agglutinin (lectin), and P34 (Gly m …

Evaluation Of Berberine As An Alternative To Antibiotics In Nursery Pig Diets, Emily Scholtz

Electronic Theses and Dissertations

Pig weaning process results in reduced growth performance and gut health of weaned pigs. Antibiotics can be added in diets for weaned pigs to improve growth performance and gut health, but their use is being discouraged because they can lead to development of antimicrobial resistant microorganisms. Thus, there is need for alternatives to antibiotics in diets for weaned pigs. The overall goal of this thesis research was to determine the effects of plant extracts (berberine, quercetin, and allyl isothiocyante [AITC]) as alternatives to antibiotics in weaned pig diets. The first objective of the research was to determine in vitro antimicrobial …

Evaluation Of Absorbezz On Swine Reproductive Health And A Comparative Study Of Two Commercially Available Swine Show Feeds, Scott G. Sutton

Electronic Theses and Dissertations

The efficacy of a feed supplement fed to gilts and sows was tested in study I. The supplement was stated to improve reproductive soundness, conception rates, immune health, and overall well-being of livestock. Thirty gilts were split into a control group (Base diet) and a treatment group (Absorbezz® 0.32 mL on base diet). Upon completion of the trial results indicate the treatment group significantly underperformed (

Two commercially available show pig growing rations were tested in study II to find a high quality, cost efficient product. A total of 10 pigs (5 barrows, 5 gilts), at an average weight of …

Disappearance And Appearance Of An Indigestible Marker In Feces From Growing Pigs As Affected By Previous- And Current-Diet Composition, Brandy M. Jacobs, John F. Patience, Merlin D. Lindemann, Kenneth J. Stalder, Brian J. Kerr

Animal and Food Sciences Faculty Publications

Background: Indigestible markers are commonly utilized in digestion studies, but the complete disappearance or maximum appearance of a marker in feces can be affected by diet composition, feed intake, or an animal’s BW. The objectives of this study were to determine the impact of previous (Phase 1, P1) and current- (Phase 2, P2) diet composition on marker disappearance (Cr) and appearance (Ti) in pigs fed 3 diets differing in NDF content.

Results: When pigs were maintained on the 25.1, 72.5, and 125.0 g/kg NDF diets, it took 5.1, 4.1, and 2.5 d, respectively, for Cr levels to decrease below the …

Ultrastructure Of Apoptotic T Lymphocytes And Thymicepithelial Cells In Early Postnatal Pig Thymus, Ahmet Ceylan, Belma Alabay

Turkish Journal of Veterinary & Animal Sciences

The thymus is a primary lymphoid organ that provides the microenvironment required for the development of T lymphocytes. Thymic epithelial cells (TECs) are among the most critical components in the thymic microenvironment supporting thymocyte selection and maturation. Apoptosis is primarily a physiologic process that plays a major role during the development of T lymphocytes. The first purpose of this study was to examine morphological changes in apoptotic thymocytes by transmission electron microscope in piglets. The second purpose was to reveal the morphological typology of TECs in piglets. Tissue samples of the thymus were taken from healthy Yorkshire race pigs of …

Effect Of Polymorphisms In Intron 1 Of The Swine Pou1f1gene On Growth And Reproductive Traits, Lyubov Getmantseva, Anatoly Kolosov, Maria Leonova, Aleksander Usatov, Faridun Bakoev, Aleksander Klimenko, Siroj Bakoev

Turkish Journal of Veterinary & Animal Sciences

The most prospective and actual trend in farm animal breeding is studying gene polymorphisms affecting the productive traits. The objective of this investigation was to study the effect of polymorphisms in intron 1 of the swine POU1F1 gene on number of days to 100 kg (days to 100 kg), length of body (LB), backfat thickness (BF), and number of piglets born alive (NBA). Research was conducted on purebred pigs of Landrace (n = 80) and Duroc (n = 100) and crossbred pigs (Landrace x Large White) (n = 192). Insertions/deletions in intron 1 of the POU1F1 gene were defined by …

Characterization Of Porcine Adiponectin Gene (Adipoq) Polymorphismsand Their Association With Litter Size, Xiaodong Zhang, Ning Zhou, Jie Zhou, Ning Wang, Xiang Qin, Hui Dong, Yueyun Ding, Zongjun Yin

Turkish Journal of Veterinary & Animal Sciences

Litter size is one of the most important economic traits for pig production as it is directly related to production efficiency. To evaluate the effects of the adiponectin (ADIPOQ) gene on porcine litter size, we investigated ADIPOQ polymorphisms in three breeds, Wannan Black pigs, Berkshire pigs, and BW pigs (crossbred pigs produced from mating male Berkshire pigs and female Wannan Black pigs), using the PCR-SSCP method. Three SNPs (c. 178G > A, c. 1165A > G, and c. 1138G > A) were identified. In Wannan Black pigs, association analysis indicated that the c. 178G > A SNP genotype was significantly associated with an effect …

Evaluation Of The Hypothalamic Kisspeptin System Throughout The Estrous Cycle And During The Attainment Of Puberty In Gilts, Eric Steven Jolitz

Electronic Theses and Dissertations

Kisspeptin has been demonstrated to affect reproductive cyclicity and the attainment of puberty in multiple species, presumably through its actions on GnRH and LH, as demonstrated in other species. Kisspeptin administration causes increased plasma concentrations of LH in pigs, sheep, and rats. Two experiments were conducted to evaluate 1) the hypothalamic kisspeptin system throughout various days of the estrous cycle and 2) the hypothalamic kisspeptin system during the peripubertal period in gilts. In experiment 1, 40 crossbred gilts (191 d, 121 kg) were administered an intramuscular injection of PG600. Twelve days after the administration of PG600, gilts were fed 15 …

Association Of Mx1 Gene Polymorphism With Some Economic Traits In Meishan Pigs, Xue Mei Yin, Ying Liu, Wen Hua Dong, Qiao Hui Zhao, Guo Qiang Zhu, Sheng Long Wu, Wen Bin Bao

Turkish Journal of Veterinary & Animal Sciences

This study was conducted to determine the association of polymorphisms in exon 14 of the Mx1 gene with significant economic traits in Meishan pigs, with the aim of identifying genetic markers of disease resistance. PCR-RFLP analysis of exon 14 of the Mx1 gene was conducted and associations with some cytokine levels (IFN-$\alpha$, IFN-$\gamma$, IL-2, IL-6, IL-10, and IL-12), early body weight (birth weight, 20-day weight, and 40-day weight), and reproductive performance within different parities (total number born, number born alive, number in live weaning litter, birth weight, and weaning weight) were analyzed. The results showed that there were AA, AB, …

Effects Of Probiotics, Oligosaccharides, And Berberine Combinationson Growth Performance Of Pigs, Guoge Fan, Juan Chang, Qingqiang Yin, Xiao Wang, Xiaowei Dang

Turkish Journal of Veterinary & Animal Sciences

In order to find alternative feed additives to replace antibiotics for safe animal production, combinations of probiotics, oligosaccharides, and berberine were used in this study. Ninety 60-day-old pigs were assigned to 9 groups, with 10 pigs for each group. Group 1 was the control, group 2 had antibiotics added, and groups 3-9 had different levels of combinations added. The experimental period was 60 days. The results indicated that average daily gain and feed conversion ratio had no significant differences among the 9 groups (P > 0.05); however, the diarrhea rates in the control group and the high probiotic groups with low …