Amino acid specific appetite related with growth and feed intake in broiler chicken

2019 ◽  
Author(s):  
Shahram Niknafs
Keyword(s):  
Amino Acid ◽  
Feed Intake ◽  
Broiler Chicken

scholarly journals RAPID COMMUNICATION: Residual feed intake in beef cattle is associated with differences in protein turnover and nutrient transporters in ruminal epithelium

2019 ◽  
Vol 97 (5) ◽  
pp. 2181-2187
Author(s):  
Ahmed A Elolimy ◽  
Emad Abdel-Hamied ◽  
Liangyu Hu ◽  
Joshua C McCann ◽  
Daniel W Shike ◽  
...  
Keyword(s):  
Amino Acid ◽  
Beef Cattle ◽  
Protein Degradation ◽  
Insulin Signaling ◽  
Feed Intake ◽  
Feed Efficiency ◽  
Protein Turnover ◽  
Residual Feed Intake ◽  
Ubiquitin Proteasome ◽  
Ruminal Epithelium

Abstract Residual feed intake (RFI) is a widely used measure of feed efficiency in cattle. Although the precise biologic mechanisms associated with improved feed efficiency are not well-known, most-efficient steers (i.e., with low RFI coefficient) downregulate abundance of proteins controlling protein degradation in skeletal muscle. Whether cellular mechanisms controlling protein turnover in ruminal tissue differ by RFI classification is unknown. The aim was to investigate associations between RFI and signaling through the mechanistic target of rapamycin (MTOR) and ubiquitin-proteasome pathways in ruminal epithelium. One hundred and forty-nine Red Angus cattle were allocated to 3 contemporary groups according to sex and herd origin. Animals were offered a finishing diet for 70 d to calculate the RFI coefficient for each. Within each group, the 2 most-efficient (n = 6) and least-efficient animals (n = 6) were selected. Compared with least-efficient animals, the most-efficient animals consumed less feed (P < 0.05; 18.36 vs. 23.39 kg/d DMI). At day 70, plasma samples were collected for insulin concentration analysis. Ruminal epithelium was collected immediately after slaughter to determine abundance and phosphorylation status of 29 proteins associated with MTOR, ubiquitin-proteasome, insulin signaling, and glucose and amino acid transport. Among the proteins involved in cellular protein synthesis, most-efficient animals had lower (P ≤ 0.05) abundance of MTOR, p-MTOR, RPS6KB1, EIF2A, EEF2K, AKT1, and RPS6KB1, whereas MAPK3 tended (P = 0.07) to be lower. In contrast, abundance of p-EEF2K, p-EEF2K:EEF2K, and p-EIF2A:EIF2A in most-efficient animals was greater (P ≤ 0.05). Among proteins catalyzing steps required for protein degradation, the abundance of UBA1, NEDD4, and STUB1 was lower (P ≤ 0.05) and MDM2 tended (P = 0.06) to be lower in most-efficient cattle. Plasma insulin and ruminal epithelium insulin signaling proteins did not differ (P > 0.05) between RFI groups. However, abundance of the insulin-responsive glucose transporter SLC2A4 and the amino acid transporters SLC1A3 and SLC1A5 also was lower (P ≤ 0.05) in most-efficient cattle. Overall, the data indicate that differences in signaling mechanisms controlling protein turnover and nutrient transport in ruminal epithelium are components of feed efficiency in beef cattle.

scholarly journals Effects of Methionine-Cysteine Amino Acid Supplementations in the Aflatoxin B1 Contaminated Diet on Broiler Production Performance

2019 ◽  
Vol 43 (4) ◽  
Author(s):  
Listya Purnamasari ◽  
Ali Agus ◽  
Cuk Tri Noviandi
Keyword(s):  
Body Weight ◽  
Amino Acid ◽  
Aflatoxin B1 ◽  
Interaction Effect ◽  
Broiler Chicken ◽  
Production Performance ◽  
Feed Consumption ◽  
Age Group ◽  
Feed Conversion ◽  
Cysteine Amino Acid

This research aimed to observe the interaction of methionine-cysteine amino acid supplementation to decrease the effect of aflatoxin B1 (AFB1) on diet against production performance of broiler chicken. A number of 240 mixed sex broiler chickens were treated in 9 treatments by factorial design 3 x 3 with methionine-cysteine amino acid (M+C) (75,100, dan 125%) factors and AFB1 levels (0, 200, dan 400 ppb). Variables observed were: Weight gain, feed consumption, and feed conversion ratio (FCR). The results showed that increased AFB1 content in diet from 0 to 400 ppb increased chicken body weight (P <0.05) in each age group. The high body weight was balanced with high feed consumption along with increased nutrient needs, mainly sulfuric amino acid (M+C) as the precursor of glutathione to eliminate toxic through conjugation reactions. The interaction effect was firstly occurred between M + C and AFB1 treatment (P <0.05). Meanwhile increased supplementation of M + C from 75 to 125% caused decreased feed consumption in each age group of chickens, but increased AFB1 levels further increased feed consumption (P<0.05). The interaction effect between the level of M + C and AFB1 contamination in diets on feed consumption were seen in 21-day-old chickens (P<0.05). FCR was also increased (P <0.05) with the reduction of M + C content in diet at 7 days old. The effect of AFB1 on diet and interaction between M + C and AFB1 on chicken FCR in this study was not significant in all age groups. It can be concluded from the current study that supplying methionine-cystine amino acid with 75, 100 and 125% in AFB1 contaminated diet of 0, 200 and 400 ppb improves the performance of broiler chicken production.

scholarly journals The effects of protein, amino acid, and dietary electrolyte balance on broiler chicken performance and blood parameters under heat stress

2016 ◽  
Vol 38 (3) ◽  
pp. 285 ◽  
Author(s):  
Ali Asghar Saki ◽  
Mostafa Maleckey ◽  
Rahele Johari ◽  
Sara Mirzaie Goudarzi ◽  
Mansoureh Abdolmaleki
Keyword(s):  
Heat Stress ◽  
Amino Acid ◽  
Broiler Chicken ◽  
Blood Parameters ◽  
Electrolyte Balance ◽  
Protein Amino Acid

Apparent metabolisable energy and amino acid digestibility of microalgae Spirulina platensis as an ingredient in broiler chicken diets

2018 ◽  
Vol 59 (5) ◽  
pp. 562-567 ◽  
Author(s):  
F. De. C. Tavernari ◽  
L. F. Roza ◽  
D. Surek ◽  
C. Sordi ◽  
M. L. B. D. Silva ◽  
...  
Keyword(s):  
Amino Acid ◽  
Spirulina Platensis ◽  
Broiler Chicken ◽  
Metabolisable Energy

scholarly journals 89 Nutrition and Feeding of the Modern Hyperprolific Sow

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 75-75
Author(s):  
Laura L Greiner
Keyword(s):  
Amino Acid ◽  
Body Mass ◽  
Milk Production ◽  
Feed Intake ◽  
Growth Rates ◽  
Environmental Influences ◽  
Energy Requirements ◽  
Reproductive Tissue ◽  
Fast Growing ◽  
Amino Acid Requirements

Abstract Over the last 25 years, the sow has developed to have a leaner body mass to address the need for leaner, fast growing offspring. The leaner body mass results in a female that biologically can have a lower feed intake. Furthermore, the number of pigs born per litter and milk production have also increased during the same timeframe. Much research has been conducted over the years to investigate the amino acid and energy requirements of both the lactating and gestating sow; however, application of the research has resulted in varied responses. The varied responses can be related to sow health, environmental influences, litter growth rates, and anticipated body reserve changes during lactation. Furthermore, calculations associated with the regression of reproductive tissue after farrowing can complicate the analysis of amino acid requirements. This presentation will discuss some of the recent research associated with feeding the modern sow, potentially challenging some of the differences in data, and offering some thoughts on looking towards the next 25 years of sow production.

scholarly journals Bioavailability of Methionine-Coated Zinc Nanoparticles as a Dietary Supplement Leads to Improved Performance and Bone Strength in Broiler Chicken Production

Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1482
Author(s):  
Ashraf Alkhtib ◽  
Dawn Scholey ◽  
Nicholas Carter ◽  
Gareth W.V. Cave ◽  
Belal I. Hanafy ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Amino Acid ◽  
Bone Strength ◽  
Feed Intake ◽  
Energy Content ◽  
Nano Zno ◽  
Ileal Digestibility ◽  
Nano Zinc Oxide ◽  
Nano Zinc ◽  
Bird Weight

Recently, nanotechnology has been widely adopted in many fields. The goal of this study was to evaluate the potential for amino acid coated nano minerals as a supplement in broiler feed. Zinc was selected as a model mineral for this test and supplementation of nano zinc, both coated and uncoated was compared with organic and inorganic commercial forms of zinc. A total of 48 pens (8 birds each) were assigned to one of the following dietary treatments: Control, methionine-Zinc chelate (M-Zn), nano zinc oxide (Nano-ZnO), and methionine coated nano zinc oxide (M-Nano-ZnO). All experimental diets were formulated with the same total zinc, methionine, protein, and energy content with just the zinc source as a variable. Bird weight, feed intake and feed conversion ratios were recorded weekly, with three birds culled (sacrificed) at day 21 and day 35 for sampling measures. Ileal digestibility of zinc was determined at day 21 and day 35 using titanium dioxide as an inert marker. Blood serum, liver and spleen samples were collected at day 21 and day 35 and analysed for zinc content via inductively coupled plasma mass spectrometry (ICP-MS). Tibia strength and morphometrics were measured from both legs of three birds per pen at day 21 and day 35. The study was conducted at Nottingham Trent University Poultry Unit, UK. The novel method of producing nano minerals coated with amino acids was successfully tested with zinc and material produced to test in the feeding study. Methionine coated nano zinc oxide supplementation significantly improved bird weight gain and the increased feed intake of broilers compared to an inorganic zinc form. Ileal digestibility was also improved with this methionine-nano zinc. Moreover, this supplementation improved the tibia strength of broilers at the age of 21 days, though this was not observed at day 35. Therefore, M-Nano-ZnO could be used to supplement broilers to improve both performance and digestibility with a limited positive impact on bone strength. The results of the current study suggest that the amino acid coating of nano minerals can improve the digestibility of minerals which may have further implications for the field of mineral nutrition in animal feeds.

scholarly journals Composition of Metabolic Energy Value and Amino Acid Digestibility of Wheat, Wheat Screening and Barley Between Ileum and Faces of Broiler Chicken

2009 ◽  
Vol 46 (3) ◽  
pp. 188-192 ◽  
Author(s):  
Ali A. Saki ◽  
Tahereh Ranjbari ◽  
Mohammad M. Tabatabaei ◽  
Ahmad Ahmadi ◽  
Feriydoon Aflaki ◽  
...  
Keyword(s):  
Amino Acid ◽  
Broiler Chicken ◽  
Metabolic Energy ◽  
Energy Value
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