In recent years, Animal Science demographics have been shifting from many students having an abundance of animal experience towards a majority little to no prior experience. It’s important note this demographic shift and consider how could be impacting student mental health. Throughout semester long parturition management course with unsupervised experiences, physiological psychological stress data were collected along levels. Caucasian participants more psychologically stressed than...

The study objective was to characterize effects of early gestation in utero heat stress (IUHS) on postnatal fasting production (FHP) and blood biomarkers associated with metabolism growing pigs. Based previous observation increased core body temperature set point IUHS pigs, we hypothesized that FHP would be altered during life because IUHS. Pregnant first-parity gilts were exposed thermoneutral (TN; n = 4; 17.8 ± 0.1°C) or (HS; cyclical 28 38°C) conditions from d 30 60 gestation. At weaning...

Heat stress due to increasing extremes in ambient temperature and humidity results reduced semen quality boars. This has caused efficiency of the swine industry, requiring more boars breed same number sows. Vitamins such as vitamin C (VC) E (VE) have been shown improve Recently, D The purpose this experiment was evaluate effects increased supplemental vitamins on boar reproduction during summer season a commercial stud. One hundred sixty Pig Improvement Company (PIC) terminal line (n = 32...

The study objective was to characterize effects of early gestation in utero heat stress (IUHS) on postnatal fasting production (FHP) and blood biomarkers associated with metabolism growing pigs. Based previous observation increased core body temperature set point IUHS pigs, we hypothesized that FHP would be altered during life because IUHS. Pregnant first-parity gilts were exposed thermoneutral (TN; = 4; 17.8 ± 0.1°C) or (HS; cyclical 28 38°C) conditions from d 30 60 gestation. At weaning...

The objective was to determine the effects of immunization against gonadotropin-releasing hormone on reproductive characteristics in boars. A total 72 boars were used a randomized design with three treatments: single (SI) (10 weeks age) or double (DI) and 15 Improvest® intact controls (no Improvest®; CNT) (n=24/group). At 10, 15, 20, 25 40 age, blood collected serum harvested evaluate testosterone concentrations. Testosterone concentrations less for DI compared CNT SI at 20 (P<0.001), but...

Study abroad programs increase a student’s exposure to different cultures, traditions, and ways of life. While the benefits participating in study program have been well documented, barriers, such as language, culture, environment, may present themselves participants. Participants are introduced variety new experiences both prior while abroad, which potential introduce additional stress on students, conjunction with more typically experienced during ‘traditional’ college experience. This...

Two experiments were conducted to evaluate the use of supplemental betaine in commercially available semen extenders. In experiment 1 (Exp1), was collected from six mature boars once weekly for 6 wk (3 summer and 3 winter) diluted into a commercial extender with following concentrations: 0, 51, 102, 205 mM. Semen samples analyzed on day collection (D0) after 72 h storage (D3). 2 (Exp2), four three extenders (short term, ST; long term bovine serum albumin, BSA; without BSA, LT), (0 70 mM), D0...

An influenza outbreak occurred at Purdue University’s swine barn, resulting in infection of 28 boars with A virus (H3N2) and causing the death two boars. The boars, approximately 35 weeks age, were enrolled a study time case report herein describes effects unintended on sperm production. Semen was collected from once week evaluated for total production concentration, semen volume, relative motility. Compared to previous collections, substantially decreased (26% reduction) 4 after first...

The study objective was to determine whether in utero heat stress (IUHS) affects piglet physiology and behavior following common production practices. A total of 12 gilts were confirmed pregnant allocated either (HS; n = 6) or thermoneutral (TN; conditions on day 30⁻60 gestation. At weaning (22.5 ± 2.3 days age), 1 boar barrow median weight selected from each litter transported for approximately 7 h. Piglets then blocked into pens (n 2/pen) by treatment (IUHS 12) (IUTN, 12)) sexual status...

The purpose of this experiment was to evaluate the effects betaine and superdosed phytase on boar reproduction during mild heat stress. Twenty-seven mature (36 wk old), crossbred boars [Duroc × (Landrace Yorkshire)] were randomly allocated treatment fed 2.6 kg/d 1 3 corn, soybean meal diets: control (CNT; 250 units/kg Escherichia coli phytase; n = 9), (BET; E. 0.6% betaine; (BP; 2,500 9). split into 4 environmental phases (4 wk/phase) consisting pre-heat stress (26°C), (30.2°C), post-heat...

The purpose of this study was to investigate the effects light exposure on farrowing performance in sows. Thirty sows were moved unit at d 110 gestation and assigned a treatment: 12 h light/12 dark cycle (Dark) or 24 (Light). Treatments began upon entry into unit. Video recorded continuously from initiation treatments until completion farrowing. Data collected included duration farrowing, birthing interval, behavior during Additionally, number total born, liveborn, stillborn piglets...

Learning styles are continuously evolving and thus educational methodologies following suit. One emerging pedagogy is the use of flipped classroom. In this model, course material primarily delivered outside classroom time, time spent applying that content or expanding on it. The present study investigated two type for an animal science reproduction laboratory. pre-classroom alternated each week between a written handout pre-recorded lecture. Student perception preference surveys...

In utero stress has been shown to negatively affect intact male rats and mice, though very little research conducted in boars. The objectives of the present studies were determine effects heat (IUHS) on postnatal development response boars stress. Ten selected at weaning from litters subjected IUHS or thermoneutral (IUTN) conditions between 30-60 days gestation. evaluated for reproductive performance birth through 57 weeks age (WOA) two experiments; (birth 40 WOA) (44 WOA). Testicular area...

The purpose of this experiment was to evaluate the effects betaine and superdosing phytase on boar reproduction during mild heat stress. Twenty-seven mature, crossbred boars (Duroc x (York Landrace)) were randomly allocated treatment fed 2.6 kg/d one three corn, soybean meal diets that consisted of: 1) Control (CNT; 250 FTU per kg E. coli phytase; n = 9); 2) Betaine (BET; FTU/kg 0.60% betaine; 3) Superdosed Phytase (BP; 2500 9). split into 4 environmental phases (4 wk/phase) consisting...

Abstract This study was conducted to evaluate the effects of an enhanced organic acid formulation (EOA; Biotronic PX Top3; BIOMIN America Inc., Overland Park, KS) on sow farrowing and lactation performance, weight backfat change, wean estrus interval. A total 18 crossbred (Yorkshire x Chester White) sows were randomly allocated one two dietary treatments which consisted control (CNT) EOA supplemented (n = 9 per treatment). Treatment diets fed from d 90 gestation until weaning. Sow body gain...

Abstract The purpose of this study was to investigate the effects light on farrowing performance in sows. Thirty sows were moved unit at d 110 gestation and assigned one two treatments: 12 h light/dark cycle (Dark) or 24 (Light). Treatments initiated upon entry into until completion confirmed. For Dark sows, crates structured with blocking tarps that lowered 1900 hr raised 0700 daily. Video recording devices installed above all continuous video recorded from initiation treatments complete....

Abstract An increasingly common method to detect pregnancy in sheep is transabdominal ultrasonography. Research has shown that ultrasonography can be accurately measured between days 33–60 of gestation. Additionally, few studies have investigated the use ultrasonic measurements as predictors fetal age via ultrasound. A pilot study found detection performed early 31 with an accuracy 100% and reported embryonic vesicle depth (EVD) could utilized estimate age. The purpose present was further...

Abstract Fourteen Suffolk/Suffolk x Hampshire pregnant ewes were utilized to evaluate the effects of liquid brewers yeast on colostrum quality and transfer passive immunity in their offspring. Parainfluenza type 3 (PI3) vaccination was used elicit an immune response. Ewes vaccinated with PI3 at 33 18 d prior expected lambing day. randomly assigned one two treatments: late gestation diet (CON) or supplemented average rate 60 g DM/d (LBY). fed treatment diets from 45 post lambing. Blood...