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Effects of low-crude protein amino-a...

Moreno, Roman.

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Effects of low-crude protein amino-acid supplemented diets formulated on Lysine:Net energy basis and ractopamine on growth performance and IGF-I and IGFBP-3 mRNA expression in late-finishing pigs.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Effects of low-crude protein amino-acid supplemented diets formulated on Lysine:Net energy basis and ractopamine on growth performance and IGF-I and IGFBP-3 mRNA expression in late-finishing pigs./
作者:	Moreno, Roman.
面頁冊數:	286 p.
附註:	Source: Dissertation Abstracts International, Volume: 70-10, Section: B, page: 5905.
Contained By:	Dissertation Abstracts International70-10B.
標題:	Agriculture, Animal Culture and Nutrition. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3378742
ISBN:	9781109430301

Effects of low-crude protein amino-acid supplemented diets formulated on Lysine:Net energy basis and ractopamine on growth performance and IGF-I and IGFBP-3 mRNA expression in late-finishing pigs.
Moreno, Roman.

Effects of low-crude protein amino-acid supplemented diets formulated on Lysine:Net energy basis and ractopamine on growth performance and IGF-I and IGFBP-3 mRNA expression in late-finishing pigs. - 286 p.

Source: Dissertation Abstracts International, Volume: 70-10, Section: B, page: 5905.

Thesis (Ph.D.)--The University of Nebraska - Lincoln, 2009.

Three experiments were conducted to investigate the effects of low-crude protein (CP) amino acid (AA)-supplemented diets formulated on Lysine (Lys):Net energy (NE) basis and ractopamine (RAC; Paylean) on growth performance, carcass characteristics, and IGF-I and IGFBP-3 mRNA expression in late finishing pigs. In all experiments, pigs were individually penned and had ad libitum access to feed and water. In Exp. 1, 36 pigs (initial BW = 69.6 kg) were randomly allotted to 1 of 4 dietary treatments with 10 or 16% CP and 0 or 20 ppm RAC for 42 d. In Exp. 2, 36 pigs (initial BW = 70.1 kg) were randomly allotted 1 of 6 dietary treatments consisting of 1 corn-soybean meal diet and 2 low-CP AA-supplemented diets (5.23, 5.23 and 6.31 g of Lys:Mcal of NE, respectively), and their RAC-supplemented counterparts (20 ppm RAC) for 28 d. In Exp. 3, 24 pigs (initial BW = 83.44 kg) were randomly allotted to 1 of 6 dietary treatments consisting in 5 low-CP AA-supplemented diets with addition of RAC (16% CP; 5 ppm RAC; 3.35, 3.95, 4.57, 5.2, and 5.83 g of Lys:Mcal of NE) and a corn-soybean meal diet (20% CP; 5.24 g of Lys:Mcal of NE; 0 ppm RAC) for 28 d. In Exp. 2, RAC increased ADG and G:F ( P = 0.019 and 0.021, respectively). In Exp. 3 increased dietary Lys:NE linearly decreased backfat (P = 0.008). Hot carcass weight increased with RAC supplementation (Exp. 1 and 2; P = 0.028 and 0.001, respectively). In adipose tissue (Exp. 3), the IGF-I/IGFBP-3 mRNA expression ratio linearly increased with increased Lys:NE (P = 0.019). Low-CP AA-supplemented diets provided energy and AA in adequate amounts to allow RAC to improve growth performance. The improvement in growth performance due to dietary RAC inclusion was not associated with changes in IGF-I or IGFBP-3 mRNA expression.

ISBN: 9781109430301Subjects--Topical Terms:

1017857
Agriculture, Animal Culture and Nutrition.

Effects of low-crude protein amino-acid supplemented diets formulated on Lysine:Net energy basis and ractopamine on growth performance and IGF-I and IGFBP-3 mRNA expression in late-finishing pigs.
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520 $a Three experiments were conducted to investigate the effects of low-crude protein (CP) amino acid (AA)-supplemented diets formulated on Lysine (Lys):Net energy (NE) basis and ractopamine (RAC; Paylean) on growth performance, carcass characteristics, and IGF-I and IGFBP-3 mRNA expression in late finishing pigs. In all experiments, pigs were individually penned and had ad libitum access to feed and water. In Exp. 1, 36 pigs (initial BW = 69.6 kg) were randomly allotted to 1 of 4 dietary treatments with 10 or 16% CP and 0 or 20 ppm RAC for 42 d. In Exp. 2, 36 pigs (initial BW = 70.1 kg) were randomly allotted 1 of 6 dietary treatments consisting of 1 corn-soybean meal diet and 2 low-CP AA-supplemented diets (5.23, 5.23 and 6.31 g of Lys:Mcal of NE, respectively), and their RAC-supplemented counterparts (20 ppm RAC) for 28 d. In Exp. 3, 24 pigs (initial BW = 83.44 kg) were randomly allotted to 1 of 6 dietary treatments consisting in 5 low-CP AA-supplemented diets with addition of RAC (16% CP; 5 ppm RAC; 3.35, 3.95, 4.57, 5.2, and 5.83 g of Lys:Mcal of NE) and a corn-soybean meal diet (20% CP; 5.24 g of Lys:Mcal of NE; 0 ppm RAC) for 28 d. In Exp. 2, RAC increased ADG and G:F ( P = 0.019 and 0.021, respectively). In Exp. 3 increased dietary Lys:NE linearly decreased backfat (P = 0.008). Hot carcass weight increased with RAC supplementation (Exp. 1 and 2; P = 0.028 and 0.001, respectively). In adipose tissue (Exp. 3), the IGF-I/IGFBP-3 mRNA expression ratio linearly increased with increased Lys:NE (P = 0.019). Low-CP AA-supplemented diets provided energy and AA in adequate amounts to allow RAC to improve growth performance. The improvement in growth performance due to dietary RAC inclusion was not associated with changes in IGF-I or IGFBP-3 mRNA expression.
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