Influence of Feed Form on Estimated Digestible Lysine Needs of Male Broilers from Sixteen to Thirty Days of Age

Greenwood, Michelle; Cramer, K. R.; Beyer, Richard; Clark, P. M.; Behnke, Keith C.

doi:10.1093/japr/14.1.130

Cited by 20 publications

(5 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, FCR for both sexes was not significant (P>0.05). This indicates that males required a higher level of dietary lysine than females for maximal BWG and dietary digestible lysine for FCR was higher than for BWG (Greenwood et al, 2005;Dozier et al, 2009;Dozier et al, 2010;Indarsih and Pym, 2010;Mehri et al, 2010). Male growing chickens gained faster than females due to higher daily feed intake in males (Samadi and Libiert, 2006) were also observed in this study.…”

Section: Performancesupporting

confidence: 71%

Response of Different Genotypes of Broilers to Lysine Supplementation Raised Under Practical Condition

Indarsih

Tamsil

2012

J. Indonesian Trop. Anim. Agric.

View full text Add to dashboard Cite

ABSTRAKPenelitian ini dilakukan untuk mengevaluasi suplementasi lisine pada broiler komersial umur 4 sampai 42 hari. Percobaan faktorial dengan 2 strain (Arbor Acres dan Lohmann) yang dibedakan jantan dan betina sebanyak 450 ekor, kemudian ditimbang dan secara acak ditempatkan pada 60 kadang bambu ukuran 2 m 2 dalam bangunan kandang terbuka. Starter komersial diberi lisin mono-HCL dengan level 0,0; 0,5; 1,0; 1,5; dan 2,0 g/kg dari umur 4-21 hari, kemudian diberi pakan finisher komersial dari umur 22-42 hari. Konsumsi pakan dan pertambahan bobot badan diukur setiap minggu. Pada umur 43 hari, 4 ekor untuk setiap ulangan diambil sebagai sampel dan dipotong untuk mengukur parameter karkas. Hasil penelitian menunjukkan bahwa penambahan lisin pada ransum komersial meningkatkan berat karkas secara signifikan (P<0,05), dan cenderung meningkatkan daging dada serta menurunkan lemak abdominal. Strain Arbor Acres merespon dengan baik pada pakan dengan lisin yang rendah sedangkan strain Lohmann merespon lebih baik pada pakan dengan lisin tinggi. Katakunci: lisin, broiler, strain, daging dada, lemak abdominal ABSTRACTThis study evaluated lysine supplementation of 4 to 42 day of age of two commercial broiler genotypes (Arbor Acres and Lohmann). Four hundred and fifty day-old chicks were sexed and randomly distributed into 60 bamboo pens each 2 m 2 . A starter commercial diet as a basal diet was supplemented with lysine mono-HCL in a 2x2x5 factorial arrangement with lysine levels of 0.0, 0.5, 1.0, 1.5 and 2.0 g/kg fed from 4-21 days of age, and then followed by a finisher diet fed from 22-42 days of age. Feed consumption, body weight gain and FCR were determined on weekly basis. On d 43 of experiment, 4 birds per each replicate were processed for carcass parameters. Results of the study revealed that lysine supplementation in a starter commercial diet increased significantly carcass weight (P<0.05. Improved breast meat and lower abdominal fat were found in lysine supplementation. Arbor Acres broilers response more efficient in low lysine whilst Lohmann broilers were better in a higher level of lysine.

show abstract

Section: Performancesupporting

confidence: 71%

Response of Different Genotypes of Broilers to Lysine Supplementation Raised Under Practical Condition

Indarsih

Tamsil

2012

J. Indonesian Trop. Anim. Agric.

View full text Add to dashboard Cite

show abstract

“…Pelleting was found to increase crude protein and lysine requirements for growing turkeys compared to similar diets in mash (Jensen et al, 1965), whilst Greenwood et al (2005) using dose-response analysis, illustrated that feed form affected estimated lysine needs of broilers when mash diets were pelleted. The increased intake observed in the present study may be indicative of birds increasing their intake to meet this lysine deficiency.…”

Section: Resultsmentioning

confidence: 94%

“…The pelleting of SPF diets in the present study may have further reduced lysine content of the SPF diets. It has been reported that pelleting of diets increase lysine deficiency (Greenwood, Cramer, Beyer, Clark, & Behnke, 2005;Jensen, Ranit, Wagstaff, & McGinnis, 1965).…”

Section: Resultsmentioning

confidence: 99%

Evaluation of the effects of sweet potato (Ipomoea batatas (L.) Lam) in broiler diets

Pandi

Glatz

Forder

et al. 2017

Animal Physiology Nutrition

View full text Add to dashboard Cite

SummaryCereal grains such as maize and wheat are used extensively in feed formulations for poultry as the primary source of carbohydrates. High cost of these grains in many developing countries necessitates the evaluation of other ingredients that are grown locally. Sweet potato is one such crop. The study was conducted as a proof of concept experiment to test the hypothesis that in the presence and absence of enzyme, sweet potato roots when included in diets of broiler chickens may affect the total metabolisable energy content of the diets which may exert certain influences on dry matter digestibility of these diets as well as impacting on production and certain gut parameters.A total of 120 chicks were raised on a commercial starter feed from day 0 to 19. On day 22, the birds were individually weighed and allocated to 96 single bird metabolism cages to conduct a 7-day classical apparent metabolisable energy (AME) assay. The test diets contained 0% and 25% sweet potato flour (SPF) with and without enzyme supplementation (Rovabio Excel AP T-flex) and replicated 24 times. AME of the control diet with and without enzyme was 14.05 and 13.91 MJ/kg whilst the AME of the SPF diets with and without enzymes were 13.45 and 13.43 MJ/kg respectively. AME of SPF was 12.08 MJ/kg. Birds fed the SPF had significantly reduced end weights (p = .002) and weight gains (p < .001) leading to significantly higher intake (p = .004) and FCRs (p < .001) in birds. These effects in growth parameters highlight the need to balance dietary protein and total amino acids when using SPF in broiler diets and may not be a negative effect of SPF per say as AME and dry matter digestibility of SPF diets were comparable to the control diet. The level of sucrase activity in the jejunum was significantly (p < .001) lower due to enzyme inclusion. Use of SPF in the current study did not negatively influence the activities of the brush border enzymes maltase and sucrase, gut morphology in the jejunum of broilers or the load of Enterobacteriaceae in the caecal of birds. This finding is promising in that the gut parameters associated with digestive capacity and gut health were not compromised with feeding of SPF to broilers. K E Y W O R D Sapparent metabolisable energy, digestive enzymes, dry matter digestibility, feed conversion ratio, gut microflora, gut morphology, intake | INTRODUCTIONEnergy represents more than 70% of the total input cost of producing live broilers, and therefore, it is paramount to assess the energy value of ingredients. The high cost of grains particularly in developing countries necessitates the evaluation of locally available alternative energy ingredients. Many of these alternative ingredients are of limited use as feed ingredients due to their dietary fibre content and other | e217anti-nutrient properties (Ravindran, 2012). For these ingredients to be considered for inclusion in poultry diets, a thorough understanding of their potential and limitations for use in poultry diets is warranted.Sweet potato can substitute cereal grain...

show abstract

“…Feed conversion ratio, representing g of feed intake to g of body weight gain, was calculated by dividing pen feed intake by the summation of pen body weight gain and recorded mortality weight for each pen. Feed intake was adjusted for mortality using bird days, as outlined by Greenwood et al [ 6 ].…”

Section: Methodsmentioning

confidence: 99%

Peripheral and Central Impact of Methionine Source and Level on Growth Performance, Circulating Methionine Levels and Metabolism in Broiler Chickens

Maynard

Gilbert

Yan³

et al. 2023

Animals

View full text Add to dashboard Cite

The present study was designed to evaluate the effects of DL-methionine (DL-Met) 2-hydroxy-4-(methylthio) butanoic acid (HMTBa), or S-(5′-Adenosyl)-L-methionine chloride (SAM), using feeding trial and central administration, on live performance, plasma metabolites, and the expression of feeding-related hypothalamic neuropeptides in broilers raised to a market age (35 d). Final average body weight (BW) and feed conversion ratio (FCR) from the feeding trial exceeded the performance measurements published by the primary breeder. At d35, the MTBHa group had better BW and lower feed intake, which resulted in a better FCR than the DL-Met group at 87 TSAA to lysine. At the molecular levels, the expression of hypothalamic neuropeptide (NPY) and monocarboxylate transporter (MCT) 2 did not differ between all treated groups; however, the mRNA abundances of hypothalamic MCT1 and orexin (ORX) were significantly upregulated in DL-Met- treated groups compared to the control. The ICV administration of SAM significantly reduced feed intake at all tested periods (from 30 to 180 min post injection) compared to the aCSF-treated group (control). The central administration of HMTBa increased feed intake, which reached a significant level only 60 min post administration, compared to the control group. ICV administration of DL-Met slightly increased feed intake compared to the control group, but the difference was not statistically discernable. Quantitative real-time PCR analysis showed that the hypothalamic expression of NPY, cocaine- and amphetamine-regulated transcript, MCT1, and MCT2 was significantly upregulated in the ICV-HMTBa group compared to the aCSF birds. The hypothalamic expression of the mechanistic target of rapamycin (mTOR), AMP-activated protein kinase (AMPKα1), D-amino acid oxidase, and hydroxyacid oxidase was significantly upregulated in DL-Met compared to the control group. The mRNA abundances of ORX were significantly increased in the hypothalamus of both DL-Met and HMTBa groups compared to the aCSF birds; however, mTOR gene expression was significantly downregulated in the SAM compared to the control group. Taken together, these data show, for the first time, that DL-Met and HMTBa have a common downstream (ORX) pathway, but also a differential central pathway, typically NPY-MCT for HMTBa and mTOR-AMPK for methionine.

show abstract

Influence of Feed Form on Estimated Digestible Lysine Needs of Male Broilers from Sixteen to Thirty Days of Age

Cited by 20 publications

References 10 publications

Response of Different Genotypes of Broilers to Lysine Supplementation Raised Under Practical Condition

Response of Different Genotypes of Broilers to Lysine Supplementation Raised Under Practical Condition

Evaluation of the effects of sweet potato (Ipomoea batatas (L.) Lam) in broiler diets

Peripheral and Central Impact of Methionine Source and Level on Growth Performance, Circulating Methionine Levels and Metabolism in Broiler Chickens

Contact Info

Product

Resources

About