کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8882633 | 1625237 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phosphorus utilization response of pigs and broiler chickens to diets supplemented with antimicrobials and phytase
ترجمه فارسی عنوان
پاسخ فسفر به خوک ها و جوجه های گوشتی به رژیم های غذایی حاوی ضد میکروبی و فیتاز
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کلمات کلیدی
ضد میکروبی، جوجه ها، فسفر، فیتاز، خوک ها،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
چکیده انگلیسی
Three experiments were conducted to evaluate the phosphorus (P) utilization responses of pigs and broiler chickens to dietary supplementation with antimicrobials and phytase and to determine if P digestibility response to phytase is affected by supplementation with antimicrobials. Experiment 1 used 4 diets (a basal negative control formulated to contain 0.41% total P and 0.71% calcium [Ca] without added antimicrobials, basal negative control with added carbadox, basal negative control with added tylosin, or basal negative control with added virginiamycin) and six 18-kg barrows in individual metabolism crates per diet. There was no effect of antimicrobials on P and Ca digestibility or retention. Carbadox supplementation increased (PÂ <Â 0.05) digestibility and retention of gross energy (GE) and supplementation with tylosin increased (PÂ <Â 0.05) N retention relative to the basal negative control diet. Experiment 2 used eight 19-kg barrows in individual metabolism crates per treatment and 9 dietary treatments arranged in a 3Â ÃÂ 3 factorial of antimicrobials (none, tylosin, or virginiamycin) and phytase (0, 500, or 1,500Â FTU/kg). Phytase addition to the diets linearly increased (PÂ <Â 0.05) apparent total tract digestibility or retention of P, Ca, nitrogen (N) and GE. Supplementation with antimicrobials did not affect apparent total tract digestibility or retention of P, Ca, N or GE. There were linear effects (PÂ <Â 0.01) of phytase on Ca utilization in diets that were not supplemented with antimicrobials but only tendencies (PÂ <Â 0.10) in diets supplemented with tylosin or virginiamycin. Phytase linearly improved (PÂ <Â 0.05) N utilization in diets supplemented with tylosin or virginiamycin but not in diets without added antimicrobials. Experiment 3 was a broiler chicken experiment with the same experimental design as Exp. 2 but feeding 8 birds per cage and 10 replicate cages per diet. Antimicrobial supplementation improved (PÂ <Â 0.05) feed efficiency and adding tylosin improved (PÂ <Â 0.05) tibia ash but did not affect nutrient utilization. Dietary phytase improved (PÂ <Â 0.01) growth performance, tibia ash and apparent ileal digestibility and retention of P regardless of antimicrobial supplementation. Overall, phytase supplementation improved growth performance and nutrient digestibility and retention, regardless of supplementation of diets with antimicrobials. Supplementation of diets with antimicrobials did not affect P digestibility or retention because of a lack of interaction between antimicrobials and phytase, there was no evidence that P digestibility response to phytase is affected by supplementation with antimicrobials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Animal Nutrition - Volume 3, Issue 1, March 2017, Pages 77-84
Journal: Animal Nutrition - Volume 3, Issue 1, March 2017, Pages 77-84
نویسندگان
Katherine McCormick, Carrie L. Walk, Craig L. Wyatt, Olayiwola Adeola,