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Articles 1 - 11 of 11
Full-Text Articles in Poultry or Avian Science
No Antibiotic Ever (Nae) Versus Conventional Broiler Production: It’S Complicated, Marcos H. Rostagno
No Antibiotic Ever (Nae) Versus Conventional Broiler Production: It’S Complicated, Marcos H. Rostagno
Proceedings of the Arkansas Nutrition Conference
Broiler production has evolved significantly over the years to meet a constant growing demand for animal protein. Rooted on major advances in genetics, facilities and environmental conditions, management, and specially, in nutrition and health, the U.S. broiler industry improved tremendously in productivity and efficiency, clearly demonstrated by a marked reduction of the average market age (i.e., days to market), while significantly increasing average market weight, breast meat yield and feed efficiency (National Chicken Council, 2023). For decades, conventional broiler production was dominant, with extensive use of antibiotics to promote growth and manage disease challenges (prevention and control). However, concerns over …
Effect Of Metabolizable Energy And Crumble Quality Of The Diet On Growth Performance Of Broilers, Nelsa M. Beckman, Khairy I. Jenkins, Allison K. Blomme, Haley K. Otott, Kara M. Dunmire, Charles R. Stark, Chad B. Paulk
Effect Of Metabolizable Energy And Crumble Quality Of The Diet On Growth Performance Of Broilers, Nelsa M. Beckman, Khairy I. Jenkins, Allison K. Blomme, Haley K. Otott, Kara M. Dunmire, Charles R. Stark, Chad B. Paulk
Kansas Agricultural Experiment Station Research Reports
In order to optimize the growth performance of broilers, diets are formulated to a recommended ME concentration. In addition, broilers (chicks) are often fed diets in the form of crumbles in early production to improve growth performance. Thus, the objective of this study was to determine the effect of ME concentration in diets and if removal of crumble fines influenced the growth performance response of broilers. At hatch, a total of 300 one-day-old male broilers (Cobb 500, initial BW 0.093 lb) were used in an 18-day study. Broilers were housed in 3 Petersime batteries with ad libitum access to feed …
Effects Of Lactobacillus Reuteri And Streptomyces Coelicolor On Growth Performance Of Broiler Chickens, Sarayu Bhogoju, Collins N. Khwatenge, Thyneice Taylor-Bowden, Gabriel Oluwamuyiwa Akerele, Boniface M. Kimathi, Joseph Donkor, Samuel N. Nahashon
Effects Of Lactobacillus Reuteri And Streptomyces Coelicolor On Growth Performance Of Broiler Chickens, Sarayu Bhogoju, Collins N. Khwatenge, Thyneice Taylor-Bowden, Gabriel Oluwamuyiwa Akerele, Boniface M. Kimathi, Joseph Donkor, Samuel N. Nahashon
Agricultural and Environmental Sciences Faculty Research
There are well documented complications associated with the continuous use of antibiotics in the poultry industry. Over the past few decades, probiotics have emerged as viable alternatives to antibiotics; however, most of these candidate probiotic microorganisms have not been fully evaluated for their effectiveness as potential probiotics for poultry. Recent evaluation of a metagenome of broiler chickens in our laboratory revealed a prevalence of Lactobacillus reuteri (L. reuteri) and Actinobacteria class of bacteria in their gastrointestinal tract. In this study Lactobacillus reuteri and Streptomyces coelicolor (S. coelicolor) were selected as probiotic bacteria, encapsulated, and added into broiler feed at a …
Transcriptome Analysis And Expression Of Selected Cationic Amino Acid Transporters In The Liver Of Broiler Chicken Fed Diets With Varying Concentrations Of Lysine, Collins N. Khwatenge, Boniface M. Kimathi, Samuel N. Nahashon
Transcriptome Analysis And Expression Of Selected Cationic Amino Acid Transporters In The Liver Of Broiler Chicken Fed Diets With Varying Concentrations Of Lysine, Collins N. Khwatenge, Boniface M. Kimathi, Samuel N. Nahashon
Agricultural and Environmental Sciences Faculty Research
Amino acids are known to play a key role in gene expression regulation. Amino acid signaling is mediated via two pathways: the mammalian target of rapamycin complex 1 (mTORC1) and the amino acid responsive (AAR) pathways. Cationic amino acid transporters (CATs) are crucial in these pathways due to their sensing, signaling and transport functions. The availability of certain amino acids plays a key role in the intake of other amino acids, hence affecting growth in young birds. However, the specific mechanism for regulating lysine transport for growth is not clear. In this study, we analyze the transcriptome profiles and mRNA …
Effect Of Varying Dietary Concentrations Of Lysine On Growth Performance Of The Pearl Grey Guinea Fowl, Sarayu Bhogoju, Samuel N. Nahashon, Joseph Donkor, Boniface M. Kimathi, Dekarra Johnson, Collins N. Khwatenge, Thyneice Taylor-Bowden
Effect Of Varying Dietary Concentrations Of Lysine On Growth Performance Of The Pearl Grey Guinea Fowl, Sarayu Bhogoju, Samuel N. Nahashon, Joseph Donkor, Boniface M. Kimathi, Dekarra Johnson, Collins N. Khwatenge, Thyneice Taylor-Bowden
Agricultural and Environmental Sciences Faculty Research
Lysine is the second limiting essential amino acid in poultry nutrition after methionine. Understanding the lysine requirement of poultry is necessary in guiding formulation of least cost diets that effectively meet the nutritional needs of individual birds. The lysine requirement of the Pearl Grey guinea fowl (PGGF) is not known. Therefore, the objective of this study was to assess the appropriate lysine levels required for optimal growth attributes of the PGGF. In a 12-week study, 512 one-day-old Pearl Grey guinea keets were weighed individually and randomly assigned to electrically heated battery brooders. Each battery contained 12 compartments housing 15 birds …
Specialty Poultry Production: Impact Of Genotype, Feed Strategies, Alternative Feedstuffs, And Dietary Enzymes On The Growth Performance And Carcass Characteristics Of Heritage Breed Chickens, Tatijana Fisher
Theses and Dissertations--Animal and Food Sciences
There is a growing market for specialty poultry production using alternative genotypes and management systems. However, producers interested in specialty poultry production face several challenges. One challenge is that little published data exists regarding the growth and production parameters for alternative genotypes like slow-growing meat strains and heritage breeds. To address this challenge, research at the University of Kentucky examined the effect of feed strategies, alternative feedstuffs, and dietary enzymes on the growth and performance of heritage breeds of chicken used for either egg- or meat-production. The first trial documented the growth and nutrient intake of pullets from three heritage …
Effects Of Post-Hatch Holding Time And Early Nutrition Strategies On Growth Performance, Carcass And Skeletal Characteristics Of Young Chickens, Marquisha A. Paul
Effects Of Post-Hatch Holding Time And Early Nutrition Strategies On Growth Performance, Carcass And Skeletal Characteristics Of Young Chickens, Marquisha A. Paul
Theses and Dissertations--Animal and Food Sciences
The study objectives of this thesis were to evaluate the effects of delayed feeding and specific aspects of the Programmed Nutrition (PN) feeding strategy (Alltech, Inc.) on growth performance, carcass characteristics, and skeletal characteristics of commercial broiler chicks through market age, as well as investigate the effects of breed and the PN feeding strategy on early growth and development. When commercial broiler chicks were fed reduced nutrient diets, delayed feeding decreased early growth performance and carcass yield (P<0.05), whereas post-hatch PN conditioning for 72 hours improved early growth performance and alleviated the negative effects of delayed feeding on carcass yield (P<0.05). Through market age, delayed feeding improved Gain: Feed (P<0.05), while PN had the opposite effect. Interactive effects and main effects of delayed feeding and PN were observed for tissue mineral concentration (P<0.05). PN lowered bone ash % (P<0.05) and increased meat oxidation of broiler chicks during storage (P<0.05). PN also had negative effects on early growth performance and bone breaking strength (P<0.05) of various meat-type breeds, but especially for non-commercial, moderate-growing or fast-growing breeds. In conclusion, PN may be suitable for commercial broiler chicks that experience delayed feeding and are fed reduced nutrient diets.
A Review On Effects Of Aloe Vera As A Feed Additive In Broiler Chicken Diets, Darabighane Babak, Samuel N. Nahashon
A Review On Effects Of Aloe Vera As A Feed Additive In Broiler Chicken Diets, Darabighane Babak, Samuel N. Nahashon
Agricultural and Environmental Sciences Faculty Research
Prohibition of application of antibiotic growth promoters in broiler chicken diets has resulted in increased use of herbs as natural additives in broiler feeds over the recent years. Researchers particularly look for herbs that can affect such parameters as growth performance, immune response, or treatment of certain diseases. Aloe vera is a well-known herb characterized by properties such as anti-bacterial, anti-viral, anti-fungal, anti-tumor, anti-inflammatory, immunomodulatory, wound-healing, anti-oxidant, and anti-diabetic effects. During the past years, attention has shifted toward Aloe vera as a natural additive to broiler diets, and studies have shown that Aloe vera can improve immune response and growth …
The Use Of Non-Traditional Technologies To Improve The Efficiency And Sustainability Of Modern Poultry Production, Christopher Pixley
The Use Of Non-Traditional Technologies To Improve The Efficiency And Sustainability Of Modern Poultry Production, Christopher Pixley
Graduate Theses and Dissertations
Historically, major driving factors for the animal agriculture industry have been efficiency and profitability. As demand for efficient food production has increased, the industry has focused research efforts on ways to improve the rearing process. Current market demands are requiring the industry to abandon some of the traditional tools it has used to maximize productivity. However, developing alternative technologies are available which may fill the void. Unfortunately, these alternatives are less well-described and the beneficial impacts they can have are not fully understood. As the animal agriculture industry matures it is becoming evident that consumers will continue to demand methods …
Effect Of Floor Density On Growth Performance Of Pearl Grey Guinea Fowl Replacement Pullets, Samuel N. Nahashon, Nathaniel Adefope, D. Wright
Effect Of Floor Density On Growth Performance Of Pearl Grey Guinea Fowl Replacement Pullets, Samuel N. Nahashon, Nathaniel Adefope, D. Wright
Agricultural and Environmental Sciences Faculty Research
Little is known of the optimal floor density for the Pearl Grey (PG) guinea fowl pullet. Hence, the objective of this study was to determine the effect of varying floor density on the growth performance of PG guinea fowl pullets. In 3 replicates, 1-d-old guinea keets (n = 786) were weighed individually and randomly assigned to floor pens covered with pine wood shavings at 80, 69, 60, and 53 birds/pen, equivalent to densities of 18, 15.6, 13.6, and 12 birds/m2, respectively. The birds were allowed feeder space of 2.3, 2.7, 3.1, and 3.5 cm/bird, respectively, and water space of 1.2, …
The Effect Of Floor Density On Growth Performance And Carcass Characteristics Of French Guinea Broilers, Samuel N. Nahashon, Nathaniel Adefope, Abravi Amenyenu, James E. Tyus Ii, D. Wright
The Effect Of Floor Density On Growth Performance And Carcass Characteristics Of French Guinea Broilers, Samuel N. Nahashon, Nathaniel Adefope, Abravi Amenyenu, James E. Tyus Ii, D. Wright
Agricultural and Environmental Sciences Faculty Research
The floor density required for optimal growth performance of different avian species and varieties is highly variable. Little is known of the required floor density for optimum performance of the French guinea fowl (Numida meleagris) broiler. The objective of this study was to assess the effect of varying floor densities on growth performance and carcass characteristics of the French guinea broiler. In 3 replicates, 687 one-day-old French guinea keets were weighed individually and randomly assigned to floor pens covered with pine wood shavings at 69, 60, 53, and 47 birds/pen, equivalent to densities of 15.6, 13.6, 12, and 10.7 birds/m2, …