scholarly journals Nutritional value of a transgenic high-lysine, high-oil corn for young pigs

Author(s):  
P R O'Quinn ◽  
D A Knabe ◽  
J C Woodworth ◽  
T T Lohrmann ◽  
Jim L Nelssen ◽  
...  
2000 ◽  
Vol 78 (8) ◽  
pp. 2144 ◽  
Author(s):  
P R O'Quinn ◽  
J L Nelssen ◽  
R D Goodband ◽  
D A Knabe ◽  
J C Woodworth ◽  
...  

1996 ◽  
Vol 76 (3) ◽  
pp. 443-450 ◽  
Author(s):  
Bjørn O. Eggum ◽  
Vince M. Gabert ◽  
Henry Jørgensen ◽  
Grete Brunsgaard ◽  
Jens Jensen

Three experiments were conducted to evaluate the nutritive value of four new high-lysine barley mutants, their parent variety Sultan and the high-lysine variety Lysimax. The problem of low yield, frequently encountered in previous studies with high-lysine barley, was overcome for Lysimax in this study; cv. Lysimax yielded 4% more than cv. Sultan. The highest lysine levels: 4.87, 4.75 and 3.96 g 16 g−1 N occurred in cv. Lysimax and Risø mutants (RM) 609 and 1405 compared with 3.48, 3.43 and 3.55 g 16 g−1 N in cv. Sultan and RM 1242 and 1385, respectively. Compared with cv. Sultan, the glutamic acid levels in RM 1405 and 609 and cv. Lysimax were 7.2, 25.8 and 31.3% lower, respectively. Likewise, the proline levels in RM 1405 and 609 and cv. Lysimax were 10.3, 32.2 and 37.9% lower, respectively. In the first experiment, with rats, the barleys were the sole protein sources in the diets. In the second experiment, with young pigs, only cv. Lysimax and RM 1405 were used (700 g kg−1 diet) in two starter diets. In the third experiment, the diets fed to the pigs in the second experiment were diluted with an N-free mixture and fed to rats. In the first experiment, biological values (BV) of cv. Lysimax and RM 609 (89.0% and 91.0%, respectively) were significantly greater than that of cv. Sultan (73.9%). Compared with Sultan true protein digestiblities (TD) and energy digestibility (ED) were slightly lower (P < 0.05), at most 3.6 and 4.2 percentage units, in RM 609, 1385 and 1405 and cv. Lysimax, respectively. In the second experiment with young pigs, the apparent BV of the Lysimax diet (84.1%) was higher (P < 0.05) than that of the RM 1405 diet (77.4%). The ED was 2.1 percentage units lower (P < 0.05) for the Lysimax diet than for the RM 1405 diet. In the third experiment with rats, the BV for the Lysimax diet was higher (P < 0.05) than for the RM 1405 diets, TD and ED were similar (P > 0.05). It is concluded that the development of high-lysine barley varieties is beneficial for meeting the requirements of indispensable amino acids for monogastric animals. Moreover, N excretion into the environment is substantially reduced due to a reduction in the prolamin protein fraction which is rich in glutamic acid and proline. Key words: Rats, pigs, barley, amino acids, digestibility


2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 173-173
Author(s):  
Charmaine D Espinosa ◽  
Lori L Thomas ◽  
Robert D Goodband ◽  
Hans H Stein

Abstract Two experiments were conducted to test the hypothesis that the standardized total tract digestibility (STTD) of P and digestible energy (DE) and metabolizable energy (ME) in a new variety of high-lysine sorghum is not different from values obtained in conventional sorghum varieties or in corn. In experiment 1, 48 barrows (18.63 ± 0.89 kg) were housed individually in metabolism crates and randomly allotted to 1 of 8 diets. Diets were based on high-lysine sorghum, red sorghum, white sorghum, or corn as the sole source of P and these diets either contained no microbial phytase or 500 units/kg of phytase. Feces were collected using the marker to marker approach with 5-d adaptation and 4-d collection periods. Data were analyzed by ANOVA using the Mixed Procedure of SAS. Results indicated that phytase supplementation improved (P ≤ 0.05) STTD of P in all ingredients, but the STTD of P in high-lysine sorghum was not different from the STTD of P in other grains (Table 1). In experiment 2, 32 barrows (18.54 ± 0.77 kg) were housed individually in metabolism crates and randomly allotted to 1 of 4 diets. Diets contained high-lysine sorghum, red sorghum, white sorghum, or corn as the only energy-containing ingredient. Feces and urine samples were collected using the marker to marker approach with 5-d adaptation and 4-d collection periods. Data were analyzed as explained for Exp. 1. The ATTD of gross energy in high-lysine sorghum was less (P ≤ 0.05) than in corn, but the DE and ME in high-lysine sorghum was not different from corn. In conclusion, supplementation of phytase improved STTD of P in cereal grains, and values for STTD of P, as well as for DE and ME in high-lysine sorghum, were not different from corn, which indicates that high-lysine sorghum can replace corn in swine diets.


1995 ◽  
Vol 74 (3) ◽  
pp. 517-522 ◽  
Author(s):  
I. BARTOV ◽  
A. BAR-ZUR

1975 ◽  
Vol 54 (4) ◽  
pp. 1220-1225 ◽  
Author(s):  
W.R. Featherston ◽  
J.C. Rogler ◽  
J.D. Axtell ◽  
D.L. Oswalt

2009 ◽  
Vol 89 (4) ◽  
pp. 489-492 ◽  
Author(s):  
E Beltranena ◽  
S Hooda ◽  
R T Zijlstra

The nutritional value of zero-tannin (ZT) faba bean for starter pigs is poorly characterized. Five mash diets containing 0, 10, 20, 30 or 40% ZT faba bean in substitution for soybean meal were fed to 75 pens of 5-wk-old pigs for 21 d. Increasing the dietary level of ZT faba bean did not affect average daily weight gain, feed intake or feed efficiency (P > 0.05) for each weekly period and the entire study (days 0 to 21). Increasing the dietary level of ZT faba bean linearly increased apparent total tract digestibility of crude protein and P (P < 0.05), but not of dry matter, gross energy and Ca (P > 0.05). In conclusion, young pigs can be fed up to 40% raw, ground ZT faba bean (var. Snowbird) in full substitution for soybean meal in the starter diet.Key words: Digestibility, faba bean, growth performance, soybean meal, starter pig


1973 ◽  
Vol 52 (3) ◽  
pp. 1148-1157 ◽  
Author(s):  
M.S. Chi ◽  
G.M. Speers

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