Digestibilities of amino acids in maize, wheat and barley meals, determined with intact and caecectomised cockerels

Green, S.; Bertrand, Solange L.; Duron, Madeleine J. C.; Maillard, R.

doi:10.1080/00071668708416999

Cited by 71 publications

(23 citation statements)

References 24 publications

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“…However, Sibbald (1980) concluded that the variation in the TME values of different foodstuffs was more dependent on rate of passage. Measured AID of amino acids were lower than reported in previous studies (Green et al, 1987;Grühn et al, 1989;Almirall et al, 1995;Dalibard and Paillard, 1995), which may be a result of the differences between digestibility assays. Digestibility of lysine, methionine and threonine in barley can vary between 60% and 99%.…”

Section: Apparent Ileal Nutrient Digestibilitycontrasting

confidence: 83%

“…For lysine, methionine and threonine, the mean daily intakes from the basal diet and test ingredients were 9·6, 2·5 and 6·1 and 0·7, 0·5 and 1·0, respectively. Green et al, (1987) noticed that the higher the intake of an amino acid, the higher the apparent digestibility. At relatively low intakes, small differences in supply will have a profound influence on differences in digestibility values, since endogenous losses contribute a large proportion of total excreta.…”

Section: Apparent Ileal Nutrient Digestibilitymentioning

confidence: 97%

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Effects of preservation method and β-glucanase supplementation on ileal amino acid digestibility and feeding value of barley for poultry

Perttilä¹,

Valaja²,

Partanen³

et al. 2001

British Poultry Science

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1. Effects of preservation method (drying or air-tight storage of whole grain and ensiling of rolled high-moisture grain) and beta-glucanase supplementation (Econase) on apparent ileal amino acid digestibilities and metabolisable energy content of barley were evaluated with Ross broiler chickens. In addition, the effect of barley preservation method was assessed using Leghorn cockerels. 2. Birds were given either a semi-purified soyabean meal basal diet or a mixture of the basal diet and barley (50:50 on dry matter basis). Apparent ileal digestibilities (AID) of nutrients were assessed using the slaughter technique. AID of nutrients and nutrient digestibility measured using excreta (AED) were determined using chromium mordanted straw as an indigestible marker. 3. In broilers, AID of amino acids, dry matter and organic matter were lower for dried than air-tight stored barley, particularly for diets based on ensiled barley. In cockerels, barley preservation method had no effect on amino acid AID. The AED of nutrients and nitrogen corrected apparent metabolisable energy content (AMEn) was highest for ensiled barley across both experiments. 4. beta-glucanase supplementation increased nutrient digestibility, phosphorus retention and AMEn content of air-tight stored and dried barley diets in particular but had only negligible effects on ensiled barley. Beta-glucanase improved the AID of amino acids in dried barley but not in air-tight stored or ensiled barley. 5. Amino acid digestibilities were lower in broilers than cockerels and the effect of barley preservation on feeding value of barley was different for broilers and cockerels.

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Section: Apparent Ileal Nutrient Digestibilitycontrasting

confidence: 83%

Section: Apparent Ileal Nutrient Digestibilitymentioning

confidence: 97%

Effects of preservation method and β-glucanase supplementation on ileal amino acid digestibility and feeding value of barley for poultry

Perttilä¹,

Valaja²,

Partanen³

et al. 2001

British Poultry Science

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“…Twenty-two of these birds were caecectomized, and the remaining 18 were each subjected to a sham laparotomy. The surgical procedure for the caecectomy operation has been previously described in detail (Green, Bertrand, Duron and Maillard, 1987b). After 8 weeks, six of the caecectomized birds were killed and examined to see whether the caeca had regrown.…”

Section: Digestibility Trialsmentioning

confidence: 99%

Digestibilities of nitrogen and amino acids in soya-bean, sunflower, meat and rapeseed meals measured with pigs and poultry

Green¹,

Kiener²

1989

Anim. Prod.

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In order to determine the relative digestibilities of nitrogen and amino acids in foodstuffs for pigs and poultry, and the effects of manufacturing methods, equal quantities of soya-bean meal, sunflower meals [hulled (sunflower meal 1) and dehulled (sunflower meal 2)], meat meals [made with (meat meal 1), and without (meat meal 2), blood added at 250 g/kg meat tissue (wet weights)] and rapeseed meals [seeds heated at 80°C (rapeseed meal 1) or 100°C (rapeseed meal 2)] were mixed with protein-free ingredients. The diets were given to five growing pigs with ileo-rectal anastomoses, and, by crop-intubation, to 12 caecectomized and 12 intact cocks. Excreta were collected over 48-h periods. Endogenous excretion was estimated by giving protein-free diets.In the order, soya-bean meal, sunflower meals 1, and 2, meat meals 1, and 2, rapeseed meals 1, and 2, true digestibilities were: with pigs, of nitrogen, 0·81, 0·80, 0·79, 0·64, 0·79, 0·73, 0·70 (s.e.d. 0·030), of lysine, 0·84, 0·83, 0·84, 0·65, 0·84, 0·76, 0·72 (s.e.d. 0·032); with caecectomized birds, of nitrogen, 0·92, 0·91, 0·91, 0·66, 0·78, 0·74, 0·75 (s.e.d. 0·018), of lysine 0·92, 0·91, 0·93, 0·62, 0·79, 0·70, 0·70 (s.e.d. 0·020); with intact birds, values were similar to those with caecectomized birds for soya-bean, and the sunflower meals, but lesser for meat meals 1 and 2; the solubilities of nitrogen in pepsin were 0·96, 0·92, 0·93, 0·80, 0·89, 0·87, 0·87.Two hundred and eighty pigs (initial live weights 10 kg) were used to compare growth response to free lysine with that to lysine in soya-bean meal and sunflower meal 2. Lysine availabilities, assessed by analyses of regressions of live-weight gain against lysine intake were 0·82 (s.e. 0·12) for soya-bean meal, and 0·82 (s.e. 0·18) for sunflower meal 2.Amino acid digestibilities of the sunflower meals were similar to those of soya-bean meal, and were not influenced by dehulling; values for the rapeseed meals were lower, and unaffected by differences in heating severity; values for the meat meal were reduced by blood addition. Values differed between pigs and poultry, but there was consistency in the extent to which each species discriminated between some foodstuffs. The pepsin test was insensitive. The large standard errors associated with availability values prevented meaningful comparisons with digestibility values.

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“…To avoid increased cecal amino acid production, ileal content collection, cecectomy, and accurate feeding techniques are suggested to predict amino acid digestibility [49,50,[65][66][67]. In addition, fasting [65], used in the precise feeding technique, is criticized by several authors, since fasting animals have paterns of endogenous loss of amino acids diferent from fed animals.…”

Section: Amino Acids Methodologies: Digestibilitymentioning

confidence: 99%

Amino Acid for Japanese Quails: Methodologies and Nutritional Requirement

Vieira¹,

Costa²,

Lima³

et al. 2017

Amino Acid - New Insights and Roles in Plant and Animal

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The methodologies applied to chickens and laying hens, to determine the digestibility and requirement of protein and amino acids are used with quails, however, they need a more careful evaluation due to peculiarities inherent to the Coturnix genus, in order to provide consistent results. The nutritional requirements of the birds are determinate using the dose-response and the factorial method. Several mathematical models and techniques of diet formulation are allied to the dose-response method in determining nutritional requirements. The curvilinear (hyperbolic) models beter portray population behaviour in response to increasing nutrient doses in diets. The reading model, allow a beter estimation of the requirement, in relation to the mathematical models used in the dose-response method. The techniques of comparative slaughter and nitrogen balance are efective in determining the nutritional requirements of quails, however, the later need to be corrected by the loss of nitrogen in the feathers in determining the requirements of crude protein and amino acids for maintenance. The protein-free diet, coupled with the industrial amino acid supplementation, provides more robust digestibility values, since it more efectively predicts the endogenous excretion patern.

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Digestibilities of amino acids in maize, wheat and barley meals, determined with intact and caecectomised cockerels

Cited by 71 publications

References 24 publications

Effects of preservation method and β-glucanase supplementation on ileal amino acid digestibility and feeding value of barley for poultry

Effects of preservation method and β-glucanase supplementation on ileal amino acid digestibility and feeding value of barley for poultry

Digestibilities of nitrogen and amino acids in soya-bean, sunflower, meat and rapeseed meals measured with pigs and poultry

Amino Acid for Japanese Quails: Methodologies and Nutritional Requirement

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