Do varied dietary omega-6 to omega-3 ratios affect the performance, nutrient digestibility, immune status and faecal microbiota of weaner pigs?

2019 ◽  
Vol 59 (2) ◽  
pp. 236 ◽  
Author(s):  
Santi D. Upadhaya ◽  
Hyeok Min Yun ◽  
Kwang Young Lee ◽  
In Ho Kim
Keyword(s):  
Growth Performance ◽  
Dry Matter ◽  
Phase 1 ◽  
Average Daily Gain ◽  
Nutrient Digestibility ◽  
Phase 2 ◽  
Omega 3 ◽  
Omega 6 ◽  
Overall Performance ◽  
Weaner Pigs

The present study tested the hypothesis that altering the ratio of omega-6 (n-6) to omega-3 (n-3) fatty acids (FAs) in the diet will improve growth performance, nutrient digestibility and blood parameters of weaner pigs. In total, 90 crossbred weaner pigs ((Yorkshire × Landrace) × Duroc, 28 days old), with an average bodyweight (BW) of 6.53 ± 0.71 kg were used in a 6-week experiment. Pigs were blocked on the basis of BW and sex and randomly allotted to one of three dietary treatments (5 pigs per pen (2 barrows and 3 gilts); 6 pens per treatment). Treatments consisted of plant-derived n-6 and n-3 FAs (15:1, 10:1 and 5:1). The experimental period was divided into three phases: Phase 1; 28–35 days of age, Phase 2; 36- 49 days of age and Phase 3; 50–70 days of age. Supplementation of varied n-6:n-3 FA ratios in the diet of weaned pigs showed linear increases (P < 0.05) in BW and average daily gain during Phases 1 and 2. The feed:gain ratios reduced linearly (P < 0.05) during Phase 1 and tended to reduce (P = 0.08) during Phase 2 as the ratio of n-6:n-3 FA decreased from 15:1 to 5:1. However, the overall performance of weaners was not affected by the n-6:n-3 FA ratio. Dry matter and nitrogen (N) digestibility increased linearly (P < 0.05) and energy digestibility tended (P = 0.089) to increase linearly with the reduction of n-6:n-3 FA ratio from 15:1 to 5:1 during Week 3 and, in Week 6, dry-matter digestibility increased (P < 0.05) linearly, whereas energy digestibility tended to increase with a decreasing n-6:n-3 FA ratio in the diet. The high-density lipid cholesterol showed a significant (P < 0.05) linear increase at Week 3 and a tendency to increase at Week 6, but no significant effects on other serum lipids were observed. The dietary n-6:n-3 FA ratio did not have a significant effect on white blood cell, lymphocyte, immunoglobulin G and tumour necrosis factor-α concentrations or faecal microbial counts. In conclusion, the reduction of n-6:n-3 FA ratio from 15:1 to 5:1 in the diet did not affect the overall performance of weaning pigs. However, it showed a positive effect on the growth performance of pigs during Phases 1 and 2.

Effect of dietary fermented oats in different nutrient-density diets on growth performance, nutrient digestibility and ileal microorganisms of weanling pigs

2019 ◽  
Vol 59 (12) ◽  
pp. 2230
Author(s):  
J. W. Park ◽  
H. L. Li ◽  
J. K. Kim ◽  
D. H. Nguyen ◽  
I. H. Kim
Keyword(s):  
Growth Performance ◽  
Phase 1 ◽  
Average Daily Gain ◽  
Experimental Period ◽  
Nutrient Digestibility ◽  
Phase 2 ◽  
Weanling Pigs ◽  
Beneficial Effects ◽  
Nutrient Density ◽  
Dietary Treatments

A total of 160 crossbred weanling pigs [(Landrace × Yorkshire) × Duroc, 28 days old] with an initial bodyweight of 8.01 ± 0.74 kg were used in a 42-day trial (Phase 1: Days 1–14, Phase 2: Days 14–42). The experiment was conducted to evaluate the effects of the inclusion of fermented oats (FO) to a corn and soybean meal-based diet on the performance of weanling pigs fed with high nutrient-density (HD) and low nutrient-density (LD) diets. Pigs were randomly distributed into one of four dietary treatments in a 2 × 2 factorial arrangement. Two levels of nutrient density [LD = 3323 (Phase 1: 1–14 days) and 3269 kcal/kg (Phase 2: 14–42 days); HD = 3446 (Phase 1: 1–14 days) and 3325 kcal/kg (Phase 2: 14–42 days), the differences in dietary energy were based on differences in the content of fish meal, animal fat, corn and FO [0%, 5% (Phase 1) or 2.5% (Phase 2)] were used according to the bodyweight and sex of pigs [8 replicate pens per treatment with 5 pigs in a pen (3 gilts and 2 barrows)]. During the overall trial period (Days 1–42), the average daily gain and gain:feed ratio of pigs fed HD and FO diets were significantly higher (P ≤ 0.05) than those of pigs fed with LD and non-fermented oats diets respectively. On Day 14, the apparent total tract digestibility of dry matter and nitrogen of the HD groups were significantly greater (P ≤ 0.05) than those of the LD groups. The apparent total tract digestibility of energy of the FO groups was significantly greater (P ≤ 0.05) than that of the non-fermented oats diet groups during the whole experimental period. Pigs fed with FO showed higher (P ≤ 0.05) ileal Lactobacillus and lower (P ≤ 0.05) Escherichia coli counts compared with those fed with the non-fermented oats diet. In conclusion, administration of FO to a LD diet demonstrated beneficial effects on the growth performance, nutrient digestibility and ileal microorganisms balance of weanling pigs.

scholarly journals Feeding microalgae (Schizochytrium limacinum) to beef steers increases meat omega-3 content

2020 ◽  
Vol 9 (7) ◽  
pp. e675974568
Author(s):  
Mateus Alan Demeda ◽  
Cristiane Regina Tomaluski ◽  
Cintiamara Baggio ◽  
Karina A. Mateus ◽  
Tiago Goulart Petrolli ◽  
...  
Keyword(s):  
Growth Performance ◽  
Dry Matter ◽  
Average Daily Gain ◽  
Fold Increase ◽  
Control Group ◽  
Beef Steers ◽  
Omega 3 ◽  
Fold Reduction ◽  
Omega 6 ◽  
Lumbar Muscle

New alternatives to increase the content of polyunsaturated beef fat are necessary. Feed supplements like microalgae are a strategy to enrich meat with omega 3. The aim of the study was to evaluate growth performance, fatty acid profile of meat and carcass characteristics of steers fed with microalgae in the diet. Sixteen steers (mean weight 299.6 ± 7.4 kg, seven months) were randomly assigned to two groups: the control group (CTL) and the microalgae group (ALG; daily feeding of 1.7% of dry matter as microalgae). The diet (40% corn silage and 60% concentrate) was offered twice daily for 84 days. Microalgae supplementation was associated with a 4.44-fold increase in total omega-3 fatty acids in the longissimus thoracis and lumbar muscle, reflecting a 3.6-fold reduction in the omega-6: omega-3 ratio. The concentration of 20: 5n3 and 22: 6n3 increased by 7 and 20.5 times, respectively, with the addition of microalgae. However, microalgae decreased the consumption of dry matter (P <0.0001) by 16.5%, the average daily gain (P = 0.035) by 19.1% and the muscle water-holding capacity (P = 0.02) by 5.5% compared to control. The use of microalgae reduces growth performance, but does not alter the characteristics of the carcass and has the potential to improve the FA profile of the omega 3 series. Consumers may be attracted to increase their intake of polyunsaturated omega 3 fat from beef. These results can support the decision of nutritionists and farmers to use microalgae in beef cattle, as it becomes economically viable.

scholarly journals PSVI-3 Dietary supplementation with coated omega-3 fatty acids has positive effects on growth performance and nutrients digestibility in weaned pigs

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 196-197
Author(s):  
Woo Jung Seok ◽  
Je min Ahn ◽  
Jing Hu ◽  
Dexin Dang ◽  
Yanjiao Li ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Growth Performance ◽  
Phase 1 ◽  
Dietary Supplementation ◽  
Basal Diet ◽  
Phase 2 ◽  
Omega 3 ◽  
Phase 3 ◽  
Linear Effect ◽  
Weaning Pigs

Abstract The objective of this study was to evaluate the effects of dietary supplementation of coated omega-3 fatty acid (n-3 CFA) by corn cob power silica on performance of weaning pigs. A total of 200 weaned pigs [(Landrace x Yorkshire) x Duroc, average initial body weight at 6.97 ± 1.22 kg] were randomly assigned to four experimental treatments in a 6-week experiment in 3 phases as follows: CON, basal diet; 2) 0.3CFA, CON + phase 1(0.3% n-3CFA), phase 2(0.2% n-3CFA), phase 3(0.1% n-3CFA); 3) 0.6CFA, CON + phase 1(0.6% n-3CFA), phase 2(0.4% n-3CFA), phase 3(0.2% n-3CFA); 4) 0.9CFA, CON + phase 1(0.9% n-3CFA), phase 2(0.6% n-3CFA), phase 3 (0.3% n-3CFA). Each treatment had 10 replicates with 5 pigs (three gilts and two barrows) per replicate. The data were analyzed using the GLM procedure of SAS as a randomized complete block design. Pen served as the experimental unit. Linear, quadratic and cubic polynomial contrasts were used to examine effect of dietary treatment with coated n-3FA in the basal diet. Variability in the data was expressed as the standard error of means and P&lt; 0.05 was considered to statistically significant. Increasing the level of n-3CFA in the diet linearly increased ADG and G/F of pigs (Table 1). Increasing the level of n-3CFA showed a linear increment in the digestibility of DM (83.59, 84.38, 85.13, 85.89 %) whereas nitrogen digestibility (81.79, 82.38, 82.96, 83.64 %) showed a trend (linear effect, p=0.0594) at the end of experiment. The fecal lactobacillus count was increased (7.22, 7.27, 7.33, 7.35 log10cfu/g) with the increase in the supplemental level of n-3CFA (linear effect; p&lt; 0.05). However, there were no differences in the concentration of serum haptoglobin, or fecal E. coli, Clostridium and Salmonella counts despite the increase in n-3CFA levels in the diet. Supplementation of the diet with coated n-3 fatty acids positively affected growth performance and digestibility of dry matter and nitrogen, and enhanced the count of lactobacillus in weaning pigs.

scholarly journals Dietary Inclusion of Blood Plasma with Yeast (Saccharomyces cerevisiae) Supplementation Enhanced the Growth Performance, Nutrient Digestibility, Lactobacillus Count, and Reduced Gas Emissions in Weaning Pigs

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 759
Author(s):  
Vetriselvi Sampath ◽  
Dong Heon Baek ◽  
Sureshkumar Shanmugam ◽  
In Ho Kim
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Phase 1 ◽  
Average Daily Gain ◽  
Nutrient Digestibility ◽  
Phase 2 ◽  
Phase 3 ◽  
Yeast Saccharomyces Cerevisiae ◽  
Yeast Phase ◽  
Weaning Pigs ◽  
Daily Gain

This experiment was performed to examine the hypothesis that blood plasma (BP) with yeast (Saccharomyces cerevisiae) supplement in the diet of weaning pigs could provoke the growth performance, nutrient digestibility, fecal microbial, and reduce harmful gas excretion. A total of one hundred and eighty healthy piglets were taken and assigned (complete random blocks) to three dietary treatments as: Phase 1: Treatment (TRT) 1-6% BP; TRT 2-3% BP + 3% yeast; TRT 3-6% yeast. Phase 2: TRT 1-3%; BP., TRT 2-1.5% BP + 1.5% yeast; TRT 3- 3% yeast. Phase 3: TRT 1- Control (CON) (Basal diet); TRT 2- CON; TRT 3- CON for six- weeks. Each treatment had twelve replicates and five (three gilts and two barrows) pigs per pen. Dietary inclusion of BP with yeast supplementation significantly increased the body weight of piglets during phase 2 (p = 0.003) and phase 3 (p = 0.032). In addition, TRT2 group piglets had a significant improvement in average daily gain at the end of each phase and overall (p = 0.047, 0.025, 0.018 and 0.012, respectively). At phase 3, TRT2 group piglets showed a significant improvement on nutrient digestibility of dry matter (p = 0.012) and nitrogen (p = 0.040). The fecal microbiota of TRT2 group piglets showed a tendency to increase the number of Lactobacillus counts at phase 1 (p = 0.07) and phase 2 (p = 0.06) as well as, a significant improvement at phase 3 (p = 0.021). In addition, TRT2 group piglets had trend to decrease NH3 (p = 0.074) and H2S (p = 0.069) during phase 2, and significantly reduced NH3 (p = 0.038) and H2S (p = 0.046) at phase 3. However, the fecal score of piglets remains unaffected during the entire trial. At the end of phase 1 piglets’ IgG (p = 0.008) was significantly increased with the inclusion of BP with yeast supplementation. Based on the positive effects on body weight, average daily gain, nutrient digestibility, Lactobacillus count, and reduced gas emission, we suggest that dietary supplement with BP and yeast in the diet of weaned piglet could serve as an excellent alternative to antibiotics growth promoters.

PSV-19 Effect of Low Nutrient Density Diet with Probiotic Mixture (B. Subtilis ms1, B. Licheniformis SF5-1, and S. Cerevisiae) Supplementation on Performance of Weaner Pigs

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 193-195
Author(s):  
Vetriselvi Sampath ◽  
Hyun Ju Park ◽  
Yong min Kim ◽  
Je Min Ahn ◽  
Inho Kim
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Average Daily Gain ◽  
Nutrient Digestibility ◽  
The Body ◽  
Interactive Effects ◽  
Low Density ◽  
Gas Emission ◽  
Nutrient Density ◽  
Weaner Pigs

Abstract BACKGROUND: A total of one hundred and forty, 28 d-old weaner pigs [Duroc x (Yorkshire x Landrace)] with initial body weight (BW) of 6.56±1.25kg were used in a six-week treatment (7 replicate pens per treatment; barrows, and 2 gilts/pen) to evaluate the effect of low nutrient density diet supplement with probiotic mixture supplementation on the growth performance, nutrient digestibility, fecal microbial, and gas emission of weaner pigs. RESULTS: Pigs fed low-density diet with probiotic mixture supplementation had linearly increased (P = 0.028, 0.014) the body weight (BW) at weeks 3, and 6. Moreover, average daily gain (ADG) was linearly improved (P=0.018, 0.014, 0.014) at week 3, 6, and overall experiment. However, there were no interactive effects found on the nutrient digestibility of dry matter (DM), nitrogen (N) and energy (E) throughout the experiment. Dietary inclusion of low-density diet with probiotic mixture supplementation has improved the fecal lactobacillus counts linearly, but E. coli was unaffected during the trail. On day 42, Ammonium gas emission was significantly decrease in pigs fed a low-density diet with probiotic mixture supplementation. However, H2S, acetic acid, and CO2 were not significantly affected by the probiotic mixture supplementation diet. CONCLUSION: Low-density diet with probiotic mixture supplementation had positively affected the growth performance, fecal microbial, and fecal gas emission on weaner pigs.

scholarly journals Growth performance, nutrient digestibility, and selected fecal microbiota are improved by β-glucan supplementation in weaner pigs

2018 ◽  
Vol 18 (3) ◽  
pp. 769-779
Author(s):  
Xin Jian Lei ◽  
Hyeok Min Yun ◽  
Yi Yang ◽  
In Ho Kim
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Growth Performance ◽  
Dry Matter ◽  
Basal Diet ◽  
Negative Control ◽  
Nutrient Digestibility ◽  
Coliform Bacteria ◽  
Weaner Pigs ◽  
Blood Profiles

Abstract This study was conducted to evaluate the effects of dietary β-glucan supplementation on growth performance, nutrient digestibility, blood profiles, and fecal characteristics in weaner pigs. A total of 140 weaner pigs [(Yorkshire × Landrace) × Duroc] with an average body weight of 6.37±1.14 kg were allotted to one of the following dietary treatments: 1) negative control (NC, basal diet); 2) positive control (PC, basal diet supplemented with 39 ppm Tiamulin); 3) basal diet supplemented with 0.1% β-glucan (G1); 4) basal diet supplemented with 0.2% β-glucan (G2). During days 22 to 42 and 1 to 42, pigs offered PC and G2 diets grew faster than those offered NC diet (P<0.05). Additionally, during the same periods, pigs fed G2 and PC diets exhibited improved gain:feed ratio compared to pigs receiving NC and G1 diets (P<0.05). Pigs fed G2 diet exhibited higher coefficient of total tract apparent digestibility of dry matter than those fed NC diet (P<0.05). There were no differences on blood profiles, fecal scores, fecal moisture, and fecal pH (P>0.05). Fecal lactic acid bacteria counts in G2 treatment were higher compared with PC and NC treatments (P<0.05). Coliform bacteria concentrations were decreased in pigs fed PC and G2 diets compared with those fed NC diet (P<0.05). In conclusion, the results of the current study indicate that dietary supplementation of 0.2% β-glucan can improve growth performance and dry matter digestibility, increase fecal lactic acid bacteria concentration but decrease fecal coliform bacteria concentration in weaner pigs.

scholarly journals Growth performance and apparent total tract nutrient digestibility of limit-fed diets containing wet brewer’s grains to Holstein heifers

2020 ◽  
Vol 4 (3) ◽  
Author(s):  
Eric Hatungimana ◽  
Tess C Stahl ◽  
Peter S Erickson
Keyword(s):  
Growth Performance ◽  
Dry Matter ◽  
Average Daily Gain ◽  
Nutrient Digestibility ◽  
Metabolizable Energy ◽  
Neutral Detergent Fiber ◽  
Dry Matter Intake ◽  
Limit Feeding ◽  
Daily Gain ◽  
Body Condition Scores

Abstract The objective of this study was to evaluate the growth performance and apparent total tract nutrient digestibility of Holstein heifers limit-fed diets containing different amounts of wet brewer’s grains (WBG). A 12-wk randomized complete block study was conducted using 30 yearling Holstein heifers [378 ± 27 d of age, and body weight (BW) of 357.8 ± 27.6 kg (mean ± SD)]. Treatments were 0%, 10% and 20% of WBG on a dry matter (DM) basis and diets were formulated to be limit-fed for dry matter intake (DMI) at 2.35% of BW and provided 15% crude protein (CP) and 2.27 Mcal metabolizable energy/kg of DM. Dry matter intake was recorded daily, while BW and skeletal measurements were measured every 2 wk. During week 12, fecal samples were collected directly from the rectum over four consecutive days and composited by heifer to determine apparent total tract nutrient digestibility using acid detergent insoluble ash as a marker. Data were analyzed using the MIXED procedure of SAS. Dry matter intakes, BW, and average daily gain were not different among treatments (P = 0.2, P = 0.4, and P = 0.6, respectively). Dry matter intakes ranged from 8.6 to 9.0 kg/d. Average BW were 404.4, 411.5, and 409.3 kg for heifers fed the 0%, 10%, and 20% WBG diets, respectively. Average daily gains were 1.03, 1.04, and 0.96 kg/d for heifers fed the 0%, 10%, and 20% WBG diets respectively. Skeletal measurements and body condition scores (BCS) were not different among treatments except for the change in heart girth (P &lt; 0.01) and initial BCS (P &lt; 0.01). Apparent total tract digestibilities of DM, organic matter, CP, fat, and hemicellulose were greater or tended to be greater in heifers fed 0% and 20% WBG treatments than heifers fed 10 % WBG (P = 0.04, P = 0.04, P = 0.06, P = 0.06, and P = 0.01, respectively). Neutral detergent fiber, acid detergent fiber, and fat digestibilities were similar among treatments (P = 0.2, P = 0.3, and P = 0.3, respectively). During the digestibility phase, DMI tended to be greater (P = 0.08) for the 10% WBG treatment. These results demonstrate that limit-feeding heifers with diets containing up to 20% WBG could replace soybean- and corn-based concentrates in diets without adverse consequences to the heifer growth performance.

scholarly journals Use of barley silage or corn silage with dry-rolled barley, corn, or a blend of barley and corn on predicted nutrient total tract digestibility and growth performance of backgrounding steers

2020 ◽  
pp. 1-9
Author(s):  
B.D. Sutherland ◽  
J.A. Johnson ◽  
J.J. McKinnon ◽  
T.A. McAllister ◽  
G.B. Penner
Keyword(s):  
Growth Performance ◽  
Dry Matter ◽  
Near Infrared ◽  
Average Daily Gain ◽  
Nutrient Digestibility ◽  
Corn Silage ◽  
Neutral Detergent Fiber ◽  
Feed Ratio ◽  
Gross Energy ◽  
Barley Silage

The objective of this study was to determine the effects of feeding barley silage (BS) or corn silage (CS) with dry-rolled barley (BG), dry-rolled corn (CG), or a blend of barley and corn grain (BCG), on growth performance and nutrient digestibility, the latter predicted using near-infrared spectroscopy for backgrounding cattle. Steers (n = 288) were stratified by body weight (BW) into 24 pens and pens were randomly assigned to one of six treatments (n = 4) in a 2 × 3 factorial design. Main factors included BS or CS in combination with BG, CG, or BCG. There were no silage × grain interactions. Dry matter intake (DMI; P = 0.018) and final BW (P = 0.004) were greater for steers fed CS than BS, but average daily gain (1.01 kg d−1) and gain-to-feed ratio (0.10 kg kg−1) were not affected by silage or grain source. Steers fed CS also had greater dry matter, organic matter, crude protein (CP), acid detergent fiber (ADF), starch, and gross energy digestibility values (P < 0.01) than BS. Feeding BG increased starch, neutral detergent fiber, ADF, and CP digestibility values (P ≤ 0.01) over CG and BCG. Relative to BS, feeding CS increased DMI, final BW, and nutrient digestibility, whereas dry-rolled BG improved nutrient digestibility when compared with CG and BCG in backgrounding diets.

scholarly journals Effects of Forsythia Suspense Extract as an Antibiotics Substitute on Growth Performance, Nutrient Digestibility, Serum Antioxidant Capacity, Fecal Escherichia coli Concentration and Intestinal Morphology of Weaned Piglets

Animals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 729 ◽  
Author(s):  
Long ◽  
Liu ◽  
Liu ◽  
Mahfuz ◽  
Piao
Keyword(s):  
Escherichia Coli ◽  
Antioxidant Capacity ◽  
Phase 1 ◽  
Average Daily Gain ◽  
Basal Diet ◽  
Nutrient Digestibility ◽  
Intestinal Morphology ◽  
Phase 2 ◽  
Weaned Piglets ◽  
E Coli

The aim of this study is to determine the efficiency of Forsythia suspense extract (FSE) as an antibiotics substitute on performance, nutrient digestibility, serum antioxidant capacity, fecal Escherichia coli concentration and intestinal morphology of weaned piglets. A total of 108 Duroc × (Landrace × Yorkshire) weaned piglets (28 days (d) weaned, average body weight of 8.68 ± 1.36 kg) were randomly assigned into three dietary treatments, six pens per treatment, three barrows and three gilts per pen. The treatments contained a corn-soybean meal basal diet (CTR), an antibiotic diet (basal diet + 75 mg/kg chlortetracycline; CTC), and an FSE diet (basal diet + 200 mg/kg FSE; FSE). The experiment included phase 1 (d 1 to 14), phase 2 (d 15 to 28) and phase 3 (d 29 to 35). Compared with CTR, piglets fed FSE show improved (p < 0.05) average daily gain (ADG) and average daily feed intake in phase 2, as well as enhanced (p < 0.05) ADG from day 15 to 35 and day 1 to 28. Piglets supplemented with CTC and FSE showed a reduced (p < 0.05) diarrhea rate in phase 1, while piglets fed FSE showed enhanced (p < 0.05) apparent total tract digestibility (ATTD) of dry matter, organic matter, crude protein and gross energy, as well as lower (p < 0.05) nitrogen output in phase 2 compared with CTR and CTC. The content in the form of Colony-Forming Units (CFUs) of fecal E. coli on day 14 and 28 was lower (p < 0.05) in piglets fed FSE in comparison with CTR. The contents of total antioxidant capacity, superoxide dismutase and catalase in serum are enhanced (p < 0.05) compared with CTR and CTC, whereas the concentration of malondialdehyde in serum was decreased (p < 0.05) for piglets fed FSE on day 28 compared with CTC. The villus height to crypt depth ratio in ileum was numerically higher (p < 0.05) in piglets fed FSE in comparison with CTR. In conclusion, dietary FSE supplementation could substitute CTC in improving antioxidant capacity, nutrients digestibility and reducing fecal E. coli content, so as to reduce nitrogen output and diarrhea rate, and eventually improve performance in weaned piglets.

scholarly journals 78 Evaluation of the growth performance of finishing pigs (Genesus genetics) to titrated levels of dietary lysine

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 58-59
Author(s):  
Russell W Fent ◽  
Jim D Hedges ◽  
Kelly M Peper ◽  
Dennis O Liptrap
Keyword(s):  
Growth Performance ◽  
Phase 1 ◽  
Average Daily Gain ◽  
Dietary Treatment ◽  
Feed Ratio ◽  
Finishing Pigs ◽  
Phase 2 ◽  
Phase 3 ◽  
Randomized Design ◽  
Dietary Treatments

Abstract A total of 1,000 Genesus (Oakville, Manitoba, Canada) genetics pigs (51.8 kg body weight) were used to estimate the standardized ileal digestible (SID) lysine requirement by dietary phase. Pigs were penned by sex at 25 pigs per pen. Pens were allotted to one of five dietary treatments in a completely randomized design with eight replicate pens (four barrow, four gilt) per treatment. Growth performance was evaluated in four independent phases in which pens were re-allotted to dietary treatment between phases. Dietary SID Lys concentrations evaluated were 0.78, 0.88, 0.98, 1.08, and 1.18% for phase 1, 0.68, 0.77, 0.86, 0.95, and 1.04% for phase 2, 0.60, 0.67, 0.75, 0.83 and 0.90% for phase 3, and 0.53, 0.60, 0.67, 0.74, and 0.81% for phase 4. Diets were formulated to be isoenergetic within each phase. During phase 1 (52-64 kg), average daily gain (ADG) and gain to feed ratio (G:F) increased (P &lt; 0.01) quadratically with increasing SID Lys. Breakpoint analysis estimated the SID Lys requirement for ADG and G:F for phase 1 at 0.99 and 1.02%, respectively. During phase 2 (64-82 kg), ADG increased (P &lt; 0.10) quadratically as dietary SID Lys increased with a plateau observed above 0.86% SID Lys. Gain:feed increased linearly (P &lt; 0.01) with increasing SID Lys. During phase 3 (82-97 kg) cost of gain was a quadratic response (P &lt; 0.10) with the breakpoint being at 0.76% SID Lys. During phase 4 (97-131 kg), a linear response (P &lt; 0.02) in G:F was observed with increasing SID Lys but with no improvement above 0.67% SID Lys. These data indicate the SID lysine requirement for Genesus finishing pigs to be approximately 0.99% (23.0 g/d) for 52-64 kg, 0.86% (21.9 g/d) for 64-82 kg, 0.76% (20.2 g/d) for 82-97 kg, and 0.67% (21.6 g/d) 97-131 kg.

Sign in / Sign up

Export Citation Format

Share Document