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Standardized ileal digestibility of amino acids in extruded full-fat soybean fed to non-gestating, gestating, and lactating sows. 2023

Ya Wang, and Ke Wang, and Xiangyang Zou, and Xuemei Jiang, and Yong Zhuo, and Lianqiang Che, and De Wu
Institute of Animal Nutrition, Key Laboratory for Animal Disease-Resistance Nutrition of China, Ministry of Education, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.

This study was conducted to determine and compare the apparent ileal digestibility and standardized ileal digestibility (SID) of crude protein (CP) and amino acids (AA) in extruded full-fat soybean (EFSB) fed to nongestating, midgestating, late-gestating, and lactating sows. Six EFSB samples were collected from different sources. Fourteen nongestating sows (Landrace × Yorkshire; parity 3 to 5) were fitted with a T-cannula at the distal ileum. After recovery, sows were assigned to a replicated 7 × 3 incomplete Latin square design. The diets included a nitrogen-free (NF) diet and six experimental diets (EFSB 1 to 6). Eight midgestating sows (Landrace × Yorkshire; parity 3; day 48 of gestation), eight late-gestating sows (Landrace × Yorkshire; parity 3; day 90 of gestation), and eight lactating sows (Landrace × Yorkshire; parity 3; day 6 of lactation) were all assigned to four dietary treatments in a repeated 4 × 3 incomplete Latin square design. The diets included a NF diet and three experimental diets (EFSB 4 to 6). Results showed that there were significant differences in the AID and SID of CP and other AA in nongestating sows (P < 0.05), the AID and SID values of EFSB 1 to 3 were higher than those of EFSB 4 to 6, and the value of EFSB 5 was the lowest. For midgestating sows, there were differences in the AID of methionine (EFSB 5 had a lower value than EFSB 4 and 6) (P < 0.01). For late-gestating sows, only the AID of methionine (EFSB 5 had a lower value than EFSB 4 and 6), tryptophan (EFSB 5 had a higher value than EFSB 4 and 6), and proline (EFSB 5 had a higher value than EFSB 4) was different (P < 0.05), and the SID of methionine (EFSB 4 had a higher value than EFSB 5) and tryptophan (EFSB 5 had a higher value than EFSB 4 and 6) was different (P < 0.05). The SID of histidine and valine was greater in lactation than in nongestation (P = 0.045 and P = 0.02, respectively). The SID of isoleucine was greater in lactation than in nongestation and gestation (P < 0.01). The SID of methionine in nongestation was lower than in gestation and lactation (P < 0.01). The SID of cysteine was the lowest in midgestation (P = 0.045), and the SID of proline was greater in midgestation than in lactation and nongestation (P < 0.01). In conclusion, the AA ileal digestibility of six EFSB samples from different sources was different, and the ileal digestibility of CP and most AA was not affected by the physiological stage of sows.

UI MeSH Term Description Entries
D007082 Ileum The distal and narrowest portion of the SMALL INTESTINE, between the JEJUNUM and the ILEOCECAL VALVE of the LARGE INTESTINE.
D007774 Lactation The processes of milk secretion by the maternal MAMMARY GLANDS after PARTURITION. The proliferation of the mammary glandular tissue, milk synthesis, and milk expulsion or let down are regulated by the interactions of several hormones including ESTRADIOL; PROGESTERONE; PROLACTIN; and OXYTOCIN. Lactation, Prolonged,Milk Secretion,Lactations, Prolonged,Milk Secretions,Prolonged Lactation,Prolonged Lactations
D008715 Methionine A sulfur-containing essential L-amino acid that is important in many body functions. L-Methionine,Liquimeth,Methionine, L-Isomer,Pedameth,L-Isomer Methionine,Methionine, L Isomer
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D011392 Proline A non-essential amino acid that is synthesized from GLUTAMIC ACID. It is an essential component of COLLAGEN and is important for proper functioning of joints and tendons. L-Proline,L Proline
D004032 Diet Regular course of eating and drinking adopted by a person or animal. Diets
D004063 Digestion The process of breakdown of food for metabolism and use by the body.
D005260 Female Females
D000596 Amino Acids Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins. Amino Acid,Acid, Amino,Acids, Amino
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

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