Effect of the duration of feeding of a protein-free diet on endogenous ileal nitrogen and amino acid loss in the growing pig

Hodgkinson, Suzanne M.; Moughan, Paul J.; Reynolds, Gordon

doi:10.1002/1097-0010(200007)80:9<1407::aid-jsfa656>3.0.co;2-s

Cited by 18 publications

(17 citation statements)

References 18 publications

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“…However, endogenous N losses (g . kg -1 DMI) may decrease with the increase in the animal BW between 45 and 80 kg [26,27]. Possibly, this decrease occurred in our study and biased the ranking of species.…”

Section: True Digestibility Values and Estimates Of Endogenous Aa Lossessupporting

confidence: 82%

Ileal digestibility of amino acids and estimates of endogenous amino acid losses in pigs fed wheat, triticale, rye, barley, maize and sorghum

Jondreville

Broecke²,

Gatel³

et al. 2001

Anim. Res.

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-Forty-three batches of cereals (10 of wheat, 10 of triticale, 5 of barley, 5 of rye, 7 of maize and 6 of sorghum) were analysed and studied for their nitrogen (N) and amino acid (AA) ileal digestibility. Each batch was tested on four castrated male pigs, weighing between 30 and 90 kg, and fitted with an end-to-end ileo-rectal anastomosis. Ileal true digestibility (TD) of AA was calculated by correcting ileal apparent digestibility (AD) for basal endogenous AA losses, measured by means of a protein-free diet. Ileal real digestibility (RD) of AA was calculated by correcting AD for total endogenous AA losses, estimated by a multiple regression model. TD of N and most AA decreased (P < 0.001) from wheat, triticale and maize, to barley and sorghum and to rye (90.3, 88.7, 89.9, 85.4, 83.7 and 80.1%, respectively, for the sum of all AA). Estimates of endogenous N losses decreased (P < 0.001) from triticale, sorghum and wheat, to maize, barley and rye (on average 3.10, 2.93, 2.63, 2.43, 2.27 and 2.16 g N . kg -1 DM ingested, respectively). Barley excluded, there was a trend toward increasing endogenous AA losses with increasing dietary acid detergent fibre (ADF) concentration (r = 0.57, P < 0.001). Barley caused low endogenous N losses relative to its ADF concentration.

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Section: True Digestibility Values and Estimates Of Endogenous Aa Lossessupporting

confidence: 82%

Ileal digestibility of amino acids and estimates of endogenous amino acid losses in pigs fed wheat, triticale, rye, barley, maize and sorghum

Jondreville

Broecke²,

Gatel³

et al. 2001

Anim. Res.

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“…Ileal losses of endogenous nitrogen (N) and amino acids (AA) have been estimated in growing pigs using N free diets (Furuya & Kaji 1989;Mariscal-Landín et al 1995;Hodgkinson et al 2000), or with diets including graded levels of N, obtaining basal ileal losses by extrapolating to zero N intake (Furuya & Kaji 1989;Mariscal-Landín et al 1995). However, there is less information on endogenous N and AA ileal losses in piglets at weaning, because previous studies investigated older and heavier pigs (Huisman et al 1992;Moughan et al 1992;Butts et al 1993;Souffrant et al 1997;Nyachoti et al 2000;Pederson et al 2002).…”

Section: Introductionmentioning

confidence: 97%

Endogenous ileal losses of nitrogen and amino acids in pigs and piglets fed graded levels of casein

Landín

Souza

2006

Archives of Animal Nutrition

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In order to determine ileal losses of nitrogen (N) and amino acids (AA) and the coefficients of apparent and true ileal digestibility (AID, TID) of N and AA from casein in piglets and pigs, two experiments were conducted. In Experiment 1, 24 piglets were used. The piglets were weaned at 17 days of age, weighing 6.4 kg and cannulated at terminal ileum. Ileal digesta was collected at 28-29 and 35-36 days of age in period 1 and 2, respectively. Feed intake was 150 and 300 g x d(-1) during the first and second period. In Experiment 2, 16 castrates weighing 52.5 kg and cannulated at terminal ileum were used. The intake level of digestible energy was 2.5 times their maintenance requirement. The experiment lasted 7 days and ileal digesta was collected on day 6-7. Treatments consisted of four levels of N from casein: 8, 16, 24 and 32 g N x kg(-1) feed, respectively. Results showed that N level did not increase N or AA ileal losses. In piglets, N and AA ileal losses were similar between periods, except for period 2, where losses per kg DMI were about 47 and 64% higher for glycine and proline, respectively (p < 0.05). When ileal losses from pigs and piglets were compared, piglets had higher (p < 0.05) ileal losses of N and AA (excepted glutamic acid and alanine). A lower (p < 0.05) AID was observed in piglets in period 2 for N, methionine, glutamic acid, glycine and proline. With exception of glycine in pigs, all values for TID of N and AA of casein were superior to 0.90. Piglets had higher TID of N, leucine, isoleucine, valine and phenylalanine. These results showed that piglets have higher ileal losses than pigs.

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“…Generally, it was recommended to keep the energy intake at a minimum level of 2.0 times the maintenance requirement for metabolizable energy (ME), which allows for a moderate growth of the animals. Since the basal ileal endogenous AA losses per kg dry matter intake (DMI) tend to decrease with increasing BW of the pigs (Hodgkinson et al, 1997), it is suggested to reduce the feed intake from about 100 g/kg BW 0.75 in pigs with b40 kg BW to 70 g/ kg BW 0.75 in pigs up to 150 kg BW (Table 1) (GfE, 2002(GfE, , 2005. In the Dutch protocol, a feeding level of 2.4 times the maintenance requirement of ME (419 kJ ME/kg 0.75 / day) is required.…”

Section: Feeding Conditionsmentioning

confidence: 63%

Standardization of methods for the determination of ileal amino acid digestibilities in growing pigs

Mosenthin¹,

Jansman²,

Eklund³

2007

Livestock Science

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Effect of the duration of feeding of a protein-free diet on endogenous ileal nitrogen and amino acid loss in the growing pig

Cited by 18 publications

References 18 publications

Ileal digestibility of amino acids and estimates of endogenous amino acid losses in pigs fed wheat, triticale, rye, barley, maize and sorghum

Ileal digestibility of amino acids and estimates of endogenous amino acid losses in pigs fed wheat, triticale, rye, barley, maize and sorghum

Endogenous ileal losses of nitrogen and amino acids in pigs and piglets fed graded levels of casein

Standardization of methods for the determination of ileal amino acid digestibilities in growing pigs

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