scholarly journals Effect of Microbial Phytase on Nitrogen and Amino Acid Digestibility and Nitrogen Retention of Turkey Poults Fed Corn-Soybean Meal Diets

1996 ◽  
Vol 75 (8) ◽  
pp. 979-990 ◽  
Author(s):  
Z. YI ◽  
E.T. KORNEGAY ◽  
D.M. DENBOW
Keyword(s):  
Amino Acid ◽  
Soybean Meal ◽  
Nitrogen Retention ◽  
Turkey Poults ◽  
Microbial Phytase

Apparent ileal amino acid digestibility and activities of trypsin and chymotrypsin in pigs fed sorghum–soybean meal diets supplemented with a microbial phytase

2012 ◽  
Vol 172 (3-4) ◽  
pp. 247-251 ◽  
Author(s):  
A. Morales ◽  
H. García ◽  
J.E. Sánchez ◽  
B.A. Araiza ◽  
R.T. Zijlstra ◽  
...  
Keyword(s):  
Amino Acid ◽  
Soybean Meal ◽  
Microbial Phytase

THREONINE AS THE SECOND LIMITING AMINO ACID IN PEACE RIVER BARLEY FOR GROWING–FINISHING PIGS AND GROWING RATS

1975 ◽  
Vol 55 (4) ◽  
pp. 765-783 ◽  
Author(s):  
L. M. AW-YONG ◽  
R. M. BEAMES
Keyword(s):  
Amino Acid ◽  
Soybean Meal ◽  
Control Diet ◽  
Nitrogen Retention ◽  
Maximum Level ◽  
Essential Amino Acids ◽  
Amino Acid Mixture ◽  
Acid Mixture ◽  
Beneficial Effects ◽  
Peace River

Barley–lysine diets (0.75% total lysine, 0.37% threonine) with or without additional threonine and methionine were compared with a barley and 15.6% soybean meal control diet in a growth trial with 108 pigs and a metabolism trial with six collection periods per diet. Addition of threonine to the barley–lysine diet improved daily gain, feed efficiency and carcass quality, with the growth results obtained with the 0.10% threonine addition equalling those of the barley–soybean meal diet, except for backfat thickness, which was lower on the soybean meal diet. Nitrogen retention, however, increased up to the maximum level (0.15%) of threonine inclusion, when retention equalled that of the control diet. Addition of 0.10% methionine to the barley diet containing added lysine and threonine resulted in no responses. Growth and balance trials with weanling rats in general confirmed results obtained with the pigs. No additional beneficial effects were obtained when lysine levels were increased from 0.75 to0.90%, even when supplemented with additional threonine. However, in order to obtain results similar to those obtained on the barley–soybean meal diet, threonine additions to the barley had to be increased to 0.20% (0.57% total threonine) with the addition of a mixture containing other essential amino acids. Replacement of the essential amino acid mixture with glycine on an equal nitrogen basis did not produce adequate nitrogen retention or growth rate.

scholarly journals The Limiting Sequence and Appropriate Amino Acid Ratio of Lysine, Methionine, and Threonine for Seven- to Nine-Month-Old Holstein Heifers Fed Corn–Soybean M-Based Diet

Animals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 750
Author(s):  
Yuan Li ◽  
Yanliang Bi ◽  
Qiyu Diao ◽  
Minyu Piao ◽  
Bing Wang ◽  
...  
Keyword(s):  
Amino Acid ◽  
Growth Performance ◽  
Soybean Meal ◽  
Average Daily Gain ◽  
Nitrogen Retention ◽  
Positive Control ◽  
Adaptation Period ◽  
Feed Conversion ◽  
Urea Nitrogen ◽  
Acid Ratio

An “Amino acid (AA) partial deletion method” was used in this experiment to study the limiting sequences and appropriate ratio of lysine (Lys), methionine (Met), and threonine (Thr) in the diets of 7- to 9-month-old Holstein heifers. The experiment was conducted for three months with 72 Holstein heifers (age = 22 ± 0.5 weeks old; BW = 200 ± 9.0 kg; mean ± standard deviation). Following an initial two weeks adaptation period, heifers were allocated to one of four treatments: a theoretically balanced amino acid diet (positive control [PC]; 1.00% Lys, 0.33% Met, and 0.72% Thr), a 30% Lys deleted diet (partially deleted Lys [PD–Lys]; 0.66% Lys, 0.33% Met, and 0.72% Thr), a 30% Met deleted diet (partially deleted Met, [PD–Met]; 1.00% Lys, 0.22% Met, and 0.72% Thr), and a 30% Thr deleted diet (partially deleted Thr [PD–Thr]; 1.00% Lys, 0.33% Met, and 0.45% Thr). Experimental animals were fed a corn–soybean meal-based concentrate and alfalfa hay. In addition, the animals were provided with supplemental Lys, Met, and Thr (ruminal bypass). The results found no differences in the growth performance and nitrogen retention between PD–Thr treatment and PC treatment (p > 0.05). The average daily gain (p = 0.0013) and feed conversion efficiency (p = 0.0057) of eight- to ninr-month-old heifers were lower in both PD–Lys and PD–Met treatment than those in PC treatment. According to growth performance, Lys was the first limiting AA, followed by Met and Thr. Moreover, nine-month-old Holstein heifers in PD–Lys treatment and PD–Met treatment had higher levels of serum urea nitrogen (p = 0.0021), urea nitrogen (p = 0.0011) and total excreted N (p = 0.0324) than those in PC treatment, which showed that nitrogen retention significantly decreased (p = 0.0048) as dietary Lys and Met levels decreased. The limiting sequence based on nitrogen retention was the same as that based on growth performance. The appropriate ratio of Lys, Met, and Thr in the diet based on nitrogen retention was 100:32:57. In summary, the limiting sequence and appropriate amino acid ratio of Lys, Met, and Thr for seven- to nine-month-old Holstein heifers fed a corn–soybean meal-based diet were Lys > Met > Thr and 100:32:57, respectively.

Amino acid and phosphorus digestibility of fermented corn-soybean meal mixed feed with and fed to pigs

2017 ◽  
Vol 95 (9) ◽  
pp. 3996
Author(s):  
C. Shi ◽  
Y. Zhang ◽  
Y. Yin ◽  
C. Wang ◽  
Z. Lu ◽  
...  
Keyword(s):  
Amino Acid ◽  
Soybean Meal ◽  
Mixed Feed

scholarly journals Amino Acid Imbalance and Nitrogen Retention in Adult Rats

1958 ◽  
Vol 233 (6) ◽  
pp. 1505-1508
Author(s):  
Umesh S. Kumta ◽  
Alfred E. Harper ◽  
Conrad A. Elvehjem
Keyword(s):  
Amino Acid ◽  
Nitrogen Retention ◽  
Adult Rats ◽  
Amino Acid Imbalance

Supplementing corn-soybean meal diets with microbial phytase maximizes phytate phosphorus utilization by weanling pigs1

1993 ◽  
Vol 71 (12) ◽  
pp. 3368-3375 ◽  
Author(s):  
X. G. Lei ◽  
P. K. Ku ◽  
E. R. Miller ◽  
M. T. Yokoyama ◽  
D. E. Ullrey
Keyword(s):  
Soybean Meal ◽  
Phosphorus Utilization ◽  
Phytate Phosphorus ◽  
Microbial Phytase
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