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Articles by P.R. Ferket
Total Records ( 3 ) for P.R. Ferket
  O.T. Foye , C. Ashwell , Z. Uni and P.R. Ferket
  In-ovo Feeding (IOF), injecting nutrients into the amnion of the developing embryo may enhance post-hatch growth by enhancing intestinal expression and function prior to hatch. This hypothesis was evaluated with IOF solutions of Arginine (ARG), HMB and Egg White Protein (EW) in turkeys. Four treatments were arranged as a factorial of 2 levels of ARG (0 and 0.7%) and HMB (0 and 0.1%). An IOF solution of EW (18%) was evaluated for contrast. At 23 d of incubation (23E) each IOF solution was injected into the amnion. Upon hatch all poults were fed ad libitum. Intestinal mRNA of the digestion/absorption related genes Sodium Glucose Transporter (SGLT), Peptide transporter (Pept), Sucrase-isomaltase (SI) and Aminopepdiase (AP) were determined at 25E, hatch, 3 and 7 d by real-time PCR analysis. The data was analyzed as a 2X2 factorial and 1-way ANOVA for contrast. There were significant ARG X HMB effects on Pept, SGLT, SI and AP mRNA levels at hatch. IOF HMB alone enhanced Pept, SGLT, SI and AP intestinal mRNA expression at hatch, whereas inclusion of ARG depressed expression. There were main and independent effects of HMB or ARG on mRNA expression of SI and AP at 25E, in which ARG alone depressed expression, while IOF HMB alone had no effect on SI or AP expression. These results suggest that IOF may enhance early growth by improving intestinal capacity to digest and absorb nutrients at hatch which may fuel more rapid post-hatch growth.
  Y. Jababu , C. Blue , P.R. Ferket and Y.O. Fasina
  Background and Objectives: Spray-dried plasma (SDP) is a bioactive feed additive that frequently improves broiler growth performance and may therefore replace antibiotic growth promoters (AGPs). To improve our understanding of SDP mechanisms of action, a 2-week experiment was conducted to compare the potency of porcine SDP and bacitracin methylene disalicylate (BMD) antibiotic to stimulate intestinal development in neonate chicks. Materials and Methods: Day-old (288) Ross 708 broiler male chicks were obtained from a commercial hatchery and randomly assigned to 6 treatments in a completely randomized design. Treatments consisted of chicks given unmedicated corn-soybean meal basal diet containing no BMD or SDP (CX), at 0.055 g kg–1 diet (MX), SDP at 10 g kg–1 diet (SP1), SDP at 20 g kg–1 diet (SP2), SDP at 30 g kg–1 diet (SP3) and SDP at 40 g kg–1 diet (SP4). On day 3, 7 and 14 of experiment, intestinal maltase activity was determined. Villi morphometrics was also measured in the jejunum (d 7). Results: On day 7, all chicks that consumed SDP and BMD had lower villus: crypt ratio (p = 0.0006) and higher goblet cell density (p < 0.0001) compared to CX. Furthermore, on day 14, ileal maltase activity was higher for all chicks that consumed SDP (3.036-3.065 μg glucose/min/mL/μg protein, p < 0.0001) compared to CX (3.025 μg glucose/min/mL/μg protein). Conclusion: Like BMD antibiotic, dietary SDP at 30 or 40 g kg–1 diet improves feed conversion ratio in chicks in-part, by increasing ileal maltase activity, reducing intestinal villus/crypt ratio (indicative of ongoing villi renewal/regeneration) and increasing goblet cell density.
  G.T. Cao , Y.P. Xiao , C.M. Yang , A.G. Chen , T.T. Liu , L. Zhou , L. Zhang and P.R. Ferket
  A total of 600, 1 day old male Lingnan Yellow broiler chickens were used to investigate the effects of Clostridium butyricum (C. butyricum) on growth performance, nitrogen metabolism, intestinal morphology and cecal microflora in broiler chickens. The birds were randomly assigned into 5 treatments (6 replicate pens per treatment with 20 birds per pen) and fed the same antibiotic-free basal diets during a 42 days feeding experiment. The treatments were as follows: no addition (Control), 2.5x107 cfu C. butyricum kg-1 of diet (CB1), 5x107 cfu C. butyricum kg-1 of diet (CB2), 1x108 cfu C. butyricum kg-1 of diet (CB3) and 10 mg colistine sulfate kg-1 of diet (Antibiotic). Compared with the control birds, birds fed either CB1 or CB2 or antibiotic diet had greater (p<0.05) Body Weight (BW) on day 21 and 42 and higher (p<0.05) Average Daily Gain (ADG) from day 1-42. Birds fed C. butyricum or antibiotic diet had lower (p<0.05) Feed-to-Gain ratio (F:G) than the control birds from day 1-42. Dietary C. butyricum decreased (p<0.05) the concentration of serum Uric Acid (UA) compared with the control diet on day 21. Supplementation with CB2 or CB3 decreased (p<0.05) serum ammonia concentration compared with the control diet on day 21 and 42. Birds fed C. butyricum diet had higher (p<0.05) ileal villus height than the control birds on day 21 and 42. Birds fed CB2 or CB3 diet had lower (p<0.05) ileal crypt depth than the control birds on day 21 and 42. Supplementation with CB1 or CB3 decreased (p<0.05) the population of cecal Escherichia coli (E. coli) compared with the control on day 21. Birds fed C. butyricum diet had higher (p<0.05) population of cecal Bifidobacterium on day 21 and birds fed CB2 diet had higher (p<0.05) cecal Bifidobacterium on day 42 compared with the control birds. Supplementation with CB1 or CB2 increased (p<0.05) the number of cecal Lactobacillus on day 21 and supplementation with CB2 increased (p<0.05) Lactobacillus on day 42 compared with the control or antibiotic groups. The results indicate that supplementation with C. butyricum promotes growth performance, modulates nitrogen metabolism improves intestinal morphology and balances cecal microflora in broiler chickens.
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