Steven S Dritz
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View article: 419 Comparative analyses of caliper models for body condition assessment in reproductive females across physiological stages.
419 Comparative analyses of caliper models for body condition assessment in reproductive females across physiological stages. Open
The objective of this study was to compare the performance of five caliper versions in assessing body condition scores across distinct reproductive stages of gilts and sows. A total of 572 PIC Camborough sows were utilized, including 98 gi…
View article: PSII-2 Longitudinal investigation of reducing growth during gilt development period and 25(OH)D3 on gilt’s complete blood cell counts from 9 weeks of ages through 4 parity cycles
PSII-2 Longitudinal investigation of reducing growth during gilt development period and 25(OH)D3 on gilt’s complete blood cell counts from 9 weeks of ages through 4 parity cycles Open
Complete blood cell count (CBC) provides a preliminary insight on immune cells and red blood cells (RBC) characteristics. To evaluate the effect of growth rate reduction and 25(OH)D3 on subsequent CBC of gilts through four reproductive cyc…
View article: 132 Effects of standardized ileal digestible lysine on growth performance, removal and mortality rates, and behavior of grow-finish pigs sired by PIC®337 boars
132 Effects of standardized ileal digestible lysine on growth performance, removal and mortality rates, and behavior of grow-finish pigs sired by PIC®337 boars Open
Our objective was to determine the effects of increasing standardized ileal digestible (SID) lysine (Lys) levels on growth performance, mortality rate, and behavior of grow-finish pigs sired by PIC 337 boars. A total of 1,909 barrows and g…
View article: 9 Effects of different lactose programs on growth performance, mortality and morbidity, and diarrhea incidence of nursery pigs
9 Effects of different lactose programs on growth performance, mortality and morbidity, and diarrhea incidence of nursery pigs Open
Our objective was to determine the effects of different lactose levels and feeding durations on growth performance, morbidity and mortality rates, and diarrhea assessment of nursery pigs. A total of 2,080 barrows and gilts (PIC337×Camborou…
View article: 1 Effects of nutritional strategies of growth rate manipulation for 50- to 110-kg gilts on growth and reproductive performance
1 Effects of nutritional strategies of growth rate manipulation for 50- to 110-kg gilts on growth and reproductive performance Open
Our study aimed to evaluate the impact of nutritional interventions on manipulating the growth rate of gilts from 50 kg to 110 kg, focusing on growth performance and reproductive outcomes. A total of 739 Camborough L42 gilts across two gro…
View article: 7 Improving sow longevity by slowing growth during gilt development through nutritional interventions
7 Improving sow longevity by slowing growth during gilt development through nutritional interventions Open
The objective of this study was to determine the effects of nutritional interventions for growth rate manipulation during gilt development on lifetime reproductive performance and survivability through parity 4. A total of 810 gilts (PIC C…
View article: 137 Effects of floor space and standardized ileal digestible Tryptophan to Lysine ratios on growth performance and behavior of PIC 337 progeny from 13 kg to market
137 Effects of floor space and standardized ileal digestible Tryptophan to Lysine ratios on growth performance and behavior of PIC 337 progeny from 13 kg to market Open
The objective was to determine the effects of floor space and standardized ileal digestible (SID) tryptophan (Trp) to Lysine (Lys) ratios on the growth performance and behavior of late nursery to finish pigs. A total of 2,133 pigs (PIC 337…
View article: 67 Effects of different feeding management during lactation on gilts and sows reproductive and litter performance
67 Effects of different feeding management during lactation on gilts and sows reproductive and litter performance Open
Our objective was to determine the impact of controlled feeding for 3, 5, and 7-d post-farrowing compared to ad libitum feeding during lactation on gilts and sows reproductive and litter performance during the summer period. A total of 404…
View article: 3 Effects of varying energy levels for gilts during the first gestation on reproductive performance and retention rates through parity 3
3 Effects of varying energy levels for gilts during the first gestation on reproductive performance and retention rates through parity 3 Open
Our objective was to determine the effects of varying feeding levels for gilts during the first gestation on reproductive performance and retention rate through parity 3. A total of 1,187 PIC Camborough® gilts were used. Gilts were randoml…
View article: 180 Determining the standardized ileal digestible lysine and standardized total tract digestible phosphorus requirements of growing-finishing pigs utilizing different soybean meal net energy
180 Determining the standardized ileal digestible lysine and standardized total tract digestible phosphorus requirements of growing-finishing pigs utilizing different soybean meal net energy Open
There is growing debate about increasing the net energy (NE) value of soybean meal (SBM) in swine formula. To aid in precise formulation using lysine (Lys) and phosphorus (P) to NE ratios as constraints, this trial aims to project standard…
View article: The quality of creep feed affects consumption and growth performance of pre- and post-weaning pigs
The quality of creep feed affects consumption and growth performance of pre- and post-weaning pigs Open
Two experiments were conducted to evaluate the effects of creep feeding on pre- and post-weaning pig performance. In Exp. 1, 96 sows (C29, PIC) and their litters were used to determine the effects of creep feed quality on pre-weaning growt…
View article: 284 Relationship between sow caliper measurements with sow reproductive performance and longevity in the herd
284 Relationship between sow caliper measurements with sow reproductive performance and longevity in the herd Open
Ideal conditioned sows are desired because they maximize herd performance, improve female well-being, and optimize financial outcomes. Sow productivity has increased, and body composition of females has changed, with sows being leaner and …
View article: 30 Effects of using different dietary standardized ileal digestible lysine plans on growth performance and carcass characteristics of grow-finish pigs from high or low breeding value boars
30 Effects of using different dietary standardized ileal digestible lysine plans on growth performance and carcass characteristics of grow-finish pigs from high or low breeding value boars Open
The present study aimed to evaluate the impact of using different dietary standardized ileal digestible (SID) lysine (Lys) plans on growth performance and carcass characteristics of grow-finish pigs coming from high or low breeding value b…
View article: 200 Effects of zinc oxide removal and different nutritional plans on the growth performance, health, and behavior of nursery pigs from different genetic lines
200 Effects of zinc oxide removal and different nutritional plans on the growth performance, health, and behavior of nursery pigs from different genetic lines Open
This study was conducted to investigate the impacts of the removal of zinc oxide (ZnO) supplemented at pharmaceutical levels and different nutritional plans on the growth performance, health, and behavior of nursery pigs from different gen…
View article: 29 Effects of using different dietary standardized ileal digestible lysine plans on growth performance and carcass characteristics of PIC 337 or PIC 800 sired grow-finish pigs
29 Effects of using different dietary standardized ileal digestible lysine plans on growth performance and carcass characteristics of PIC 337 or PIC 800 sired grow-finish pigs Open
The present study aimed to evaluate the impact of using different dietary standardized ileal digestible (SID) lysine (Lys) plans on growth performance of PIC 337 and PIC 800 sired grow-finish pigs. A total of 2,016 gilts and barrows were p…
View article: 10 Effects of different feeding levels during gestation on gilt reproductive performance during the first lactation
10 Effects of different feeding levels during gestation on gilt reproductive performance during the first lactation Open
Our objective was to determine the effects of different feeding levels for gilts during gestation on reproductive performance during the first lactation. A total of 1,187 PIC Camborough gilts were used. Gilts were randomly allotted in a ra…
View article: 20 Effects of a stabilized fish oil on boar semen quality when fed during summer months
20 Effects of a stabilized fish oil on boar semen quality when fed during summer months Open
The objective of this study was to investigate the effects of feeding a stabilized fish oil source to different genetic lines on boar semen quality. A total of 127 boars representing three genetic lines (PIC 337, PIC 800, and PIC L03; Hend…
View article: 31 Effects of dietary standardized ileal digestible (SID) lysine (Lys) levels and dietary SID tryptophan to Lys ratios on growth performance and behavior of late-nursery to finish maternal barrows
31 Effects of dietary standardized ileal digestible (SID) lysine (Lys) levels and dietary SID tryptophan to Lys ratios on growth performance and behavior of late-nursery to finish maternal barrows Open
The objective was to determine the effects of dietary standardized ileal digestible (SID) lysine (Lys) levels and SID tryptophan (Trp) to Lys ratios on growth performance and behavior of late-nursery to finish maternal barrows. A total of …
View article: 14 Effects of increasing daily dietary standardized ileal digestible lysine intake of gilts and sows during d 35 to 112 of gestation on reproductive performance
14 Effects of increasing daily dietary standardized ileal digestible lysine intake of gilts and sows during d 35 to 112 of gestation on reproductive performance Open
Our objective was to determine the effects of increasing daily dietary standardized ileal digestible (SID) lysine (Lys) intake during d 35 to 112 of gestation on sow and litter performance. A total of 704 gilts and sows (PIC Camborough) we…
View article: 283 Identification of new or existing risk factors associated with the development of sow pelvic organ prolapse
283 Identification of new or existing risk factors associated with the development of sow pelvic organ prolapse Open
A survey was conducted between March and December of 2022 to examine the variation between farms that had high and low pelvic organ prolapse (POP) rate. The objective was to identify new or existing risk factors associated with the develop…
View article: 28 Investigation of protein deposition pattern of PIC337×Camborough commercial pigs
28 Investigation of protein deposition pattern of PIC337×Camborough commercial pigs Open
The objective of the trial was to investigate the protein deposition pattern of PIC337×Camborough commercial pigs. A total of 1,064 barrows and gilts [PIC337×Camborough, initial body weight (BW) = 6.0 ± 0.1 kg] were used in the trial with …
View article: 24 Effects of reducing dietary net energy on growth performance and carcass characteristics of grow-finish pigs
24 Effects of reducing dietary net energy on growth performance and carcass characteristics of grow-finish pigs Open
This study was conducted to evaluate the effects of dietary NE on growth performance, carcass characteristics, and removal and mortality rates of grow-finish pigs. A total of 1,927 pigs [initial body weight (BW) 23.3 ± 0.23 kg] were used i…
View article: 31 Importance of Good Sow Development: Focusing on Nutrition and Feeding from Gilt Development to Subsequent Parities
31 Importance of Good Sow Development: Focusing on Nutrition and Feeding from Gilt Development to Subsequent Parities Open
Continuous genetic progress leads to significant improvements in growth and efficiency of PIC Camborough gilts. As an example, gilt weight gain per day of age has increased dramatically in the past decade. This implies that gilts are heavi…
View article: 133 The Effects of Increasing Dietary Standardized Ileal Digestible Lysine Levels on Growth Performance and Carcass Characteristics of 24- to 130-kg Grow-Finish Pigs Sired by PIC 800 Boars
133 The Effects of Increasing Dietary Standardized Ileal Digestible Lysine Levels on Growth Performance and Carcass Characteristics of 24- to 130-kg Grow-Finish Pigs Sired by PIC 800 Boars Open
Our objective was to determine the effects of increasing overall standardized ileal digestible (SID) lysine (Lys) levels on growth performance and carcass characteristics of grow-finish pigs sired by PIC 800 boars. A total of 1,715 barrows…
View article: 214 Effects of Dietary Standardized Ileal Digestible (SID) Lysine (Lys) Levels and Dietary SID Tryptophan to Lys Ratios on Growth Performance of Late-Nursery Maternal Barrows
214 Effects of Dietary Standardized Ileal Digestible (SID) Lysine (Lys) Levels and Dietary SID Tryptophan to Lys Ratios on Growth Performance of Late-Nursery Maternal Barrows Open
The objective was to determine the effects of dietary standardized ileal digestible (SID) lysine (Lys) levels and SID tryptophan (Trp) to Lys ratios on the growth performance of late-nursery maternal barrows. A total of 2,293 barrows (PIC …
View article: 135 Effects of Increasing Dietary Standardized Ileal Digestible Lysine Levels on Growth Performance of PIC 337 × Camborough Commercial Pigs that were Sired by High Index Boars
135 Effects of Increasing Dietary Standardized Ileal Digestible Lysine Levels on Growth Performance of PIC 337 × Camborough Commercial Pigs that were Sired by High Index Boars Open
Our objective was to determine the effects of increasing dietary standardized ileal digestible lysine levels on the growth performance of PIC 337 × Camborough commercial pigs that were sired by high-index boars. A total of 2,200 barrows an…
View article: 132 The Effects of Increasing Dietary Standardized Ileal Digestible Lysine Levels on Growth Performance and Carcass Characteristics of 11- to 133-kg Late-Nursery-to-Finish Pigs Sired by PIC 800 Boars
132 The Effects of Increasing Dietary Standardized Ileal Digestible Lysine Levels on Growth Performance and Carcass Characteristics of 11- to 133-kg Late-Nursery-to-Finish Pigs Sired by PIC 800 Boars Open
Our objective was to determine the effects of increasing standardized ileal digestible (SID) lysine (Lys) levels on growth performance and carcass characteristics of late-nursery-to-finish pigs sired by PIC 800 boars. Barrows and gilts [n …
View article: PSIV-1 Nutrient Intervention During Gilt Development Leads to Effects on Progeny Growth Responses
PSIV-1 Nutrient Intervention During Gilt Development Leads to Effects on Progeny Growth Responses Open
To elucidate the effect of early life dietary nutrient level and vitamin D source during gilt development on progeny growth performance, equal number of weaning age piglets (n = 72) were selected from each of 4 sow treatments group. All pi…
View article: 221 Assessment of Modern Gilts and Sows Body Weight (BW) Throughout Gestation and how Different Gilt BW at Breeding Impact the Energy Requirement for Maintenance at Each Parity
221 Assessment of Modern Gilts and Sows Body Weight (BW) Throughout Gestation and how Different Gilt BW at Breeding Impact the Energy Requirement for Maintenance at Each Parity Open
In addition to reproductive traits, growth, robustness, and carcass traits also contribute to the selection index of maternal lines, resulting in leaner and faster-growing modern genotype females. As a consequence, today’s gilts achieve he…
View article: 134 Meta-Analysis to Determine the Standardized Ileal Digestible Lysine Requirements of Growing-Finishing Pigs from 11- to 150-kg Utilizing the Ingredients Database of Inra
134 Meta-Analysis to Determine the Standardized Ileal Digestible Lysine Requirements of Growing-Finishing Pigs from 11- to 150-kg Utilizing the Ingredients Database of Inra Open
A meta-analysis was conducted to determine the standardized ileal digestible (SID) lysine (Lys) recommendations for 11–150 kg PIC pigs housed under commercial conditions utilizing the INRA feed ingredients database. Data from 29 trials dat…