Main Article Content
A total of 256 one-day-old chicks were allocated into a completely randomized design with 4 treatments and 4
replicates to evaluate growth, feed conversion ratio (FCR), and nutrient digestibility (ND) of Noi chickens. The treatments consisted of control diets (Lys0) containing 1.0 and 0.9% lysine for birds 1 to 28 and 29 to 56 days
of age respectively; 3 other treatments (Lys1; Lys2; Lys3) had 0.1, 0.2, 0.3% of lysine added to diets respectively. Dietary crude protein (CP) was calculated to 19% and 17% for 1 to 28 and 29 to 56 days old, but dietary ME was
2.900 kcal/kg of feed for the entire duration of the study. On the last seven days of each period, one male and one female per replicate were selected to be assessed for apparent ND by ferric oxide (Fe2O3) marker. Birds were fed, provided fresh water ad libitum, and vaccinated to prevent some common diseases. Results showed that lysine supplemented 0.2 to 0.3% and 0.3% in diets for the birds between 1 to 28 and 29 to 56 days old significantly improved the growth and FCR of the chickens (P<0.05). Also, an additional 0.1-0.3% of lysine in the Noi chickens’ diets dramatically increased CP and average amino acid apparent digestibility (P<0.05),
but did not effect the calcium and phosphorus digestibility of the Noi broilers.
nuôi Việt Nam; 2018. Truy cập từ:
http://channuoivietnam.com/thong-ke-chan-nuoi/tkchan-nuoi/ [Ngày truy cập 12/02/2020].
 Nguyễn Tuyền. Ba năm dân Việt ăn hơn 400.000
tấn thịt gà ngoại nhập giá rẻ; 2018. Truy cập
2017040507474859.htm [Ngày truy cập 20/03/2020].
 Nguyễn Văn Thưởng. Cẩm nang Chăn nuôi gia súc.
Tập 2. Nhà Xuất bản Nông nghiệp; 2004.
 Nguyễn Minh Dũng và Huỳnh Hồng Hải. Điều tra
tình hình chăn nuôi giống gà nòi thả vườn ở Đồng
bằng sông Cửu Long [Luận văn Đại học]. Trường Đại
học Cần Thơ; 2007.
 Mack S, Bercovici D, De Groote G, Leclercq B,
Lippens M, Pack M et al. Ideal amino acid profile
and dietary lysine specification for broiler chickens
of 20 to 40 days of age. British Poultry Science.
 Baker DH. 13 Ideal Amino Acid Patterns for Broiler
Chicks. Amino Acids in Animal Nutrition; 2003.
 Baker DH, Batal AB, Parr TM, Augspurger NR,
Parsons CM. Ideal Ratio (relative to lysine) of Tryptophan, Threonine, Isoleucine, and Valine for Chicks
during the Second and Third Weeks Posthatch. Poultry Science. 2002;81(4):485–94.
 Araújo LF, Junqueira OM, Araújo CS da S, Barbosa
LCGS, Ortolan JH, Faria DE de, et al. Energy and
Lysine for Broilers from 44 to 55 Days of Age.
Brazilian Journal of Poultry Science. 2005;7(4):237–
 Corzo A, Kidd MT, Burnham DJ, Miller ER, Branton SL, Gonzalez-Esquerra R. Dietary Amino Acid
Density Effects on Growth and Carcass of Broilers
Differing in Strain Cross and Sex. Journal of Applied
Poultry Research. 2005;14(1):1–9.
 Hickling D, Guenter W, Jackson ME. The Effects of
Dietary Methionine and Lysine on Broiler Chicken
Performance and Breast Meat Yield. Canadian Journal of Animal Science. 1990;70(2):673–8.
 Moran JET, Bilgili SF. Processing Losses, Carcass
Quality, and Meat Yields of Broiler Chickens Receiving Diets Marginally Deficient to Adequate in Lysine
Prior to Marketing. Poultry Science. 1990;69(4):702–
 Hung LT, Ngu NT. Effects of Dietary Lysine
on Growth Performance, Carcass Composition and
Immunological Responses to Influenza Vaccination in Ac Chickens. International Journal of
Emerging Technology and Advanced Engineering.
 Lam Thai Hung. Using efficiency of lysine and
metabolizable energy of H’mong broilers from 0 to 28
days of age. Journal of Animal Husbandry Sciences
and Technics. 2019;249:69–74.
 Selle PH, Ravindran V, Ravindran G, Bryden WL.
Effects of Dietary Lysine and Microbial Phytase
on Growth Performance and Nutrient Utilisation of
Broiler Chickens. Asian-australasian journal of animal sciences. 2007;20(7):1100–7.
 Tao R, Belzile RJ, Brisson GJ. Amino Acid Digestibility of Rapeseed Meal Fed to Chickens: Effects
of Fat and Lysine Supplementation. Canadian Journal of Animal Science. 1971;51(3):705–9.
 Emmert JL, Baker DH. Use of the Ideal Protein
Concept for Precision Formulation of Amino Acid
Levels in Broiler Diets. Journal of Applied Poultry
 Schutte JB, Pack M. Sulfur Amino Acid Requirement
of Broiler Chicks from Fourteen to Thirty-eight Days
of Age. 1. Performance and carcass yield. Poultry
 Fancher BI, Jensen LS. Influence on Performance
of Three to Six-week-old Broilers of Varying Dietary Protein Contents with Supplementation of Essential Amino Acid Requirements. Poultry Science.
 Pinchasov Y, Mendonca CX, Jensen LS. Broiler
Chick Response to Low Protein Diets Supplemented with Synthetic Amino Acids. Poultry Science.
 Phạm Tấn Nhã. Ảnh hưởng của việc bổ sung dịch tôm
thủy phân và dịch mực thủy phân đến tăng trưởng của
gà Nòi lai giai đoạn 5–12 tuần tuổi. Tạp chí Khoa học
Trường Đại học Cần Thơ. 2019;1:1–6.
 Hồ Tấn Hiệp. Ảnh hưởng của các tỉ lệ sử dụng bánh
dầu dừa lên năng suất sinh trưởng, tỉ lệ tiêu hóa
dưỡng chất và nitơ tích lũy của gà nòi lai; 2014.
Trường Đại học Cần Thơ.
 Ngu NT, Xuan NH, Vu CT, An NT, Dung TN,
Nhan NTH. Effects of Genetic Polymorphisms on
Egg Production in Indigenous Noi Chicken. Journal
of Experimental Biology and Agricultural Science.
 Vo AK Do, Thi HTN, Thi DTN, Okamoto S,
Kawabe K, Thi KKN et al. Growth Performance and
Morphology of in 28-84 Day-old Vietnamese Local
Noi Chicken. Biotechnology in Animal Husbandry.
 Hien NN, Dung NNX, Manh LH, Le Minh BT.
Effects of Biochar Inclusion in Feed and Chicken
Litter on Growth Performance, Plasma Lipids and
Fecal Bacteria Count of Noi lai Chicken. Livestock
Research for Rural Development. 2018;30:Article-
 Hung LT, Lan LTT, Phong NH, Nhan NTH, Ngu NT. Effects of Lysine Supplementation on Growth of Noi
Broilers. Livestock Research for Rural Development.
 AOAC. Official Methods of Analysis of AOAC International: 17th ed. AOAC International, USA; 2000.
 AOAC. Official Methods of Analysis. 18th ed. Assoc
Off Anal Chem Gaithersburg, MD; 2006.
 Picard ML, Uzu G, Dunnington EA, Siegel PB. Food
Intake Adjustments of Chicks: Short Term Reactions
to Deficiencies in Lysine, Methionine and Tryptophan. British Poultry Science. 1993;34(4):737–46.
 Tang MY, Ma QG, Chen XD, Ji C. Effects of Dietary
Metabolizable Energy and Lysine on Carcass Characteristics and Meat Quality in Arbor Acres Broilers. Asian-Australasian Journal of Animal Sciences.
 Fuller MF. The Encyclopedia of Farm Animal Nutrition. Aberdeen: CABI; 2004.
 Ravindran V, Cabahug S, Ravindran G, Selle PH,
Bryden WL. Response of Broiler Chickens to Microbial Phytase Supplementation as Influenced by
Dietary Phytic Acid and Non-phytate Phosphorous
Levels. II. Effects on Apparent Metabolisable Energy,
Nutrient Digestibility and Nutrient Retention. British
Poultry Science. 2000;41(2):193–200.
 Mushtaq T, Sarwar M, Ahmad G, Mirza MA, Ahmad
T, Noreen U, et al. Influence of Sunflower Meal
Based Diets Supplemented with Exogenous Enzyme
and Digestible Lysine on Performance, Digestibility
and Carcass Response of Broiler Chickens. Animal
Feed Science and Technology. 2009;149(3–4):275–
 Mountzouris KC, Tsitrsikos P, Palamidi I, Arvaniti A, Mohnl M, Schatzmayr G, et al. Effects of
Probiotic Inclusion Levels in Broiler Nutrition on
Growth Performance, Nutrient Digestibility, Plasma
Immunoglobulins, and Cecal Microflora Composition. Poultry science. 2010;89(1):58–67.
 Amad AA, Manner K, Wendler KR, Neumann ¨
K, Zentek J. Effects of a Phytogenic Feed Additive on Growth Performance and Ileal Nutrient
Digestibility in Broiler Chickens. Poultry Science.
 Jamroz D, Orda J, Kamel C, Wiliczkiewicz A, Wertelecki T, Skorupinska J. The Influence of Phytogenic Extracts on Performance, Nutrient Digestibility,
Carcass Characteristics, and Gut Microbial Status
in Broiler Chickens. Journal of Animal and Feed
 Garcia V, Catala-Gregori P, Hernandez F, Megias
MD, Madrid J. Effect of Formic Acid and Plant Extracts on Growth, Nutrient Digestibility, Intestine Mucosa Morphology, and Meat Yield of Broilers. Journal of Applied Poultry Research. 2007;16(4):555–62.
 Angel R, Tamim NM, Applegate TJ, Dhandu
AS, Ellestad LE. Phytic Acid Chemistry: Influence on Phytin-phosphorus Availability and Phytase Efficacy. Journal of Applied Poultry Research.
 Tamim NM, Angel R. Phytate Phosphorus Hydrolysis
as Influenced by Dietary Calcium and Micro-mineral
Source in Broiler Diets. Journal of Agricultural and
Food Chemistry. 2003;51(16):4687–93.
 Tamim NM, Angel R, Christman M. Influence of
Dietary Calcium and Phytase on Phytate Phosphorus Hydrolysis in Broiler Chickens. Poultry science.
 Veum TL. Phosphorus and Calcium Nutrition and
Metabolism. Phosphorus and calcium utilization and
requirements in farm animals. 2010;94–111.
 Huang KH, Ravindran V, Li X, Bryden WL. Influence of Age on the Apparent Ileal Amino Acid
Digestibility of Feed Ingredients for Broiler Chickens.
British poultry science. 2005;46(2):236–45.
 Ravindran V, Hew LI, Ravindran G, Bryden WL. Apparent Ileal Digestibility of Amino Acids in Dietary
Ingredients for Broiler Chickens. Animal Science.