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Dissertations / Theses on the topic 'Chicken feet'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Baker, Kori S. "Utilization of Yolk as a Feed Source in Newly Hatched Chicks With and Without Vitellin." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36568.

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Increasing feed efficiency and early body weight gain has always been a top priority in the poultry industry. This experiment was designed to study the effects of feed sources differing in energy and protein levels as well as yolk removal on behavior, feed efficiency, energy intake, body weight and GIT growth in newly hatched chicks. Chicks in Experiment 1, Trial 1, were White Plymouth Rock chicks from the 40th generation of a line selected for high body weight, fed either freeze dried unincubated yolk (Diet Y) or mash (Diet M-A) from day 0 to day 5, after which all chicks were fed D

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2

Ngomani, Delisile. "Effect of dietary threonine level on productivity and carcass characteristics of Ross 308 broiler chickens." Thesis, University of Limpopo, 2019. http://hdl.handle.net/10386/3052.

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Thesis (M.Sc. (Animal Production)) --University of Limpopo, 2019<br>Two experiments were conducted to determine the effect of dietary threonine level on production performance and carcass characteristics of Ross 308 broiler chickens. In each experiment the diets were isocaloric and isonitrogenous but with different dietary threonine levels.The first part of the study determined the effect of dietary threonine level on feed intake, growth rate, mortality and carcass characteristics of Ross 308 broiler chickens aged between Day 1-21. A total of 150 unsexed day-old chicks were used in a complete

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3

Gupta, Meeta. "Consumer behavior towards chicken fed with genetically modified high available phosphorus (HAP) corn." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 1.87Mb, 129 p, 2005. http://wwwlib.umi.com/dissertations/fullcit/1428261.

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4

Noble, Donald O. "Feed intake in chickens : genetic and social factors /." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09292009-020101/.

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5

Urdaneta, Rincon Maria. "Mild feed restriction and compensatory growth in the broiler chicken." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0021/MQ55722.pdf.

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6

Rising, Russell Marshall. "Indirect calorimetry evaluations of energy utilization by laying hens: Nutrient and temperature effects." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184626.

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A four-chamber indirect calorimeter was constructed to evaluate energy utilization by laying hens as affected by dietary energy, protein and amino acid levels and by housing temperature. Heat production was measured by indirect calorimetry and metabolizable energy was determined for each diet. Net energetic efficiency was calculated as the slope of the regression of energy balance (metabolizable energy intake - heat production) on metabolizable energy intake. Hens fed diets formulated without protein specifications to provide amino acid levels equivalent to those provided by 14.5 or 16% protei

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7

Garaleviciene, Dalia. "Mycotoxins and moulded feed : effects on laying hen and contamination of Lithuanian feeds /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-5848-X.pdf.

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8

Britz, Jacobus Petrus. "Feed buying behaviour of small–scale broiler farmers / Britz J.P." Thesis, North-West University, 2011. http://hdl.handle.net/10394/7328.

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The South African poultry industry is a large part of the agricultural industry and a very important contributor to the Agriculture’s Gross Domestic Product. Furthermore, this industry is expanding and very good growth is predicted for the next decade. This growth will take place in the formal as well as the informal segments of the industry. The informal segment holds a lot of potential for suppliers to supply in their growing needs. Due to the fact that broiler feed is seen as a large contributor to the total cost of broiler production, it is considered very important factor. If feed supplie

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9

Nelson, Laura Ashley. "Dietary macronutrient composition and exogenous neuropeptide Y affect feed intake in brioler chicks." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/48899.

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Understanding the central nervous systems role in appetite regulation is crucial to cure the obesity epidemic, which is more prevalent than any disease in the United States. Central appetite regulators, known as neuropeptides, are pivotal in understanding appetite regulation. Neuropeptide Y (NPY), a 36 amino acid peptide, plays a major role in regulating the hunger signals from the brain. In all vertebrates studied, it is a strong orexigenic neurotransmitter located throughout multiple nuclei of the hypothalamus. Peripheral hormones associated with hunger are able to activate NPY neurons in th

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10

Abdel-Muttalab, Salah Ahmed. "Nutritional value of rapeseed and faba bean for poultry." Thesis, University of Newcastle Upon Tyne, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283076.

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11

Waldron, Lucy Anne. "The nutritive value of different wheat varieties for broiler chickens." Thesis, Open University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338547.

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12

McDonald, Ann Laster. "Morphological and physiological changes in laying hens in various stages of non-feed withdrawal molt." Diss., Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-11072008-124615.

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13

Rude, Christopher Mark. "Effects of feed manufacturing on nutrient metabolism, nutrient retention, and growth performance of broiler chickens." Diss., Kansas State University, 2011. http://hdl.handle.net/2097/17152.

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Doctor of Philosophy<br>Department of Animal Sciences and Industry<br>R. Scott Beyer<br>Broiler chicken feed is processed. Cereal grains are ground to reduce particle size and the feed usually is pelleted. When pelleted, broiler diets are steam conditioned and forced through a die causing varying levels of starch gelatinization. Cereal grain particle size and starch gelatinization can be controlled during feed manufacturing. Earlier research has shown that starch gelatinization negatively affects growth performance of 0 to 21 d of age. An experiment was conducted to determine the effects

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14

Combs, Stephen H. "Physical and chemical effects of pelleting feed on broiler growth and behavioral parameters." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/90926.

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Barred Rock chickens were offered diets that had been pelleted at 55° or 85°C. In an 8-week feeding trial, the subjects receiving pellets processed at the higher temperature experienced significant (P ≤ .05) weight gain over those receiving the diet processed at 55°C. Although feed consumption for this treatment increased as well, the difference was not significant (P ≤ .05). Chemical investigation revealed that metabolizable energy and bioavailability of lysine of both heat treatments were similar. Starch availability as measured by in vitro enzyme susceptibility, however, was lowered by incr

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15

Ibrir, Fathia. "The use of plant extracts as anticoccidial feed additives in broiler chickens." Thesis, University of Leeds, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411151.

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16

Greenwood, Matthew Wayne. "Influence of feed form on nutrient intake and utilization by broiler chickens /." Search for this dissertation online, 2004. http://wwwlib.umi.com/cr/ksu/main.

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17

Greenhill, Nikita. "Evaluation of probiotics as feed supplements for ostrich chicks." Master's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/10521.

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Includes bibliographical references (p. 119-130).<br>Production in farming of ostriches (Struthio camelus) is limited by the high mortality rate of ostrich chicks. Chicks which lack a well established microbiota are more susceptible to potentially fatal pathogenic infections. Therefore, the mortality rate may be decreased by establishing the correct gut microbiota by the use of ostrich specific probiotic strains. Five selected strains were conclusively identified and their mucin adhesion abilities characterised: Strain P1.2 was identified as Enterococcus faecalis; the identity of strain 5934.3

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18

Radziwilowicz, Julia. "Pašarinių priedų su genetiškai modifikuota soja ir genotipų įtaka vištų produktyvumui." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080628_110426-11593.

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Atlikta nemažai bandymų, kuriuose tiriama pašarų įtaka produktyvumui, tačiau bandymų, kuriuose būtų tirta genotipų įtaka paukščių produktyvumui - nėra. Buvo vertinta viščiukų broilerių ROSS 208 linijos lesintų įvairiais pašariniais priedais su genetiškai modifikuota (GMO) soja ir genotipų įtaką jų produktyvumui. Tyrimui buvo paimta 1000 viščiukų broilerių. Analizė atlikta Lietuvos Veterinarijos Akademijoje bei Vytauto Didžiojo Universitete. Atlikus individualią eksperimente naudotų paukščių klasterinę analizę nustatyta, kad ROSS 208 linijos paukščiai genetiškai yra panašūs. Pašariniai priedai:

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19

Sokanyile, Sanda. "How phase feeding manipulation affects growth, performance, feed cost, carcass characteristics and the quality of meat from broilers." Thesis, University of Fort Hare, 2017. http://hdl.handle.net/10353/5565.

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The main objective of the study was to determine how phase feeding manipulation affects growth performance, feed cost, carcass characteristics and quality of meat from broiler chickens. A total of 180 day old un-sexed broiler chicks (Cobb 500) were separated into 3 dietary treatments of 60 birds per treatment and each treatment was replicated 3 times with 20 birds per replicate. The dietary treatments were as follows: T1 (starter 1-7 days; grower 8-21 days; finisher 22-35 days), T2 (starter 1-14 days; grower 15-21 days, finisher 22-35 days) and T3 (starter 1-14 days; grower 15-28 days; finishe

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20

Robey, Walter Wade. "Adipocyte hyperplasia and fat deposition in high-weight and low- weight chickens." Diss., Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/49880.

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Four experiments were conducted to compare adipocyte dynamics and body composition among adult chickens from lines differing in growth rate and feed consumption. In Experiment I, forced caloric overconsumption increased weight gain and fat deposition, with concomitant increases in the total adipocyte DNA content of the assayed fat depots. Injections of DNA-specific [methyl³H] thymidine resulted in higher radioactivity levels in the fat depots of forced versus ad libitum or restricted-fed birds. Evidently, stimulation of fat deposition in adult chickens can be associated with adipocyte hyperpla

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21

Phosa, Mashilo Alpheus. "The nutritive value of macadamia oil cake meal and wood ash as alternative feed ingredients for chickens in rural areas." Pretoria : [s.n.], 2010. http://upetd.up.ac.za/thesis/available/etd-02162010-114531.

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22

Ruhnke, Isabelle [Verfasser]. "Studies on the Impact of Acidified Feed and Feed Processing on Digestive Physiology in Broiler Chickens and Laying Hens / Isabelle Ruhnke." Berlin : Freie Universität Berlin, 2014. http://d-nb.info/1052893864/34.

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23

Minh, Do Viet. "Effect of supplementation, breed, season and location on feed intake and performance of scavenging chickens in Vietnam /." Uppsala : Dept. of Animal Nutrition and Management, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/2005101.pdf.

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24

Sebastian, Sylvester. "The effects of supplemental microbial phytase on nutrient utilization in broiler chickens /." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34448.

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The influence of microbial phytase on growth performance, availability of macro and trace minerals, apparent ileal digestibility (AID) and apparent "fecal" digestibility (AFD) of amino acids (AA) and CP were investigated. The optimum level of dietary Ca and P for the maximum efficacy of supplemental phytase in broiler chickens was also studied. Phytase supplementation (600 U/kg) to a low P diet increased $(P 0.05)$ on feed efficiency in broiler chickens at 21 d. The efficacy of phytase, particularly in stimulating growth, was higher in male than female chickens. The relative retention of Ca, P

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25

Pan, Deng. "An Integrated Study on Chicken Gut Microbiome Associated with Diets and Feed Utilization Using Microarray and Illumina Sequencing." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1417694886.

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26

Pousga, Salimata. "Supplementation strategies for semi-scavenging chickens in Burkina Faso : evaluation of some local feed resources /." Uppsala : Dept. of Animal Nutrition and Management, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/2007116.pdf.

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27

White, Mallory B. "Performance and Microbial Profiles of Broiler Chickens fed Phytogenic Feed Additives or Probiotics during Coccidiosis." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/83871.

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The prophylactic use of antibiotics is rapidly being phased out of poultry operations. Diseases such as coccidiosis are extremely costly, and typically prevented with coccidiostats and antibiotics. New regulation banning antibiotics is mandating a search for new alternatives, such as probiotics and phytogenic feed additives (PFAs). Two separate studies were performed to evaluate the performance and microbial profiles of commercial broilers fed either PFAs or Eimeria challenged broilers fed probiotics. During the probiotics study, 1056 day-old male Ross broiler chicks were assigned to one of 6

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28

Fontana, Eddy Alejandro. "The effect of early feed restriction on the performance, organ weights, carcass composition, and lipid and protein metabolism in broiler chickens." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/41291.

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Five experiments were conducted to investigate the effects of early feed restriction on body weights, feed conversion, organ weights, fat deposition, carcass and muscle composition, plasma lipids, lipogenesis, lipolysis, and muscle tissue DNA and RNA in broiler chickens. In Experiments 1 and 2, broiler chicks were reared in litter pens for 49 days, while Experiments 3,4, and 5 were conducted in battery cages for 28 days. Feed restriction in all experiments was induced by providing male broiler chicks with 40 kcal/bird/day for 7 (Experiments 1 and 2) or 6 (Experiments 3, 4, and 5) days, startin

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29

Niba, Aziwo Tatanja. "Factors affecting the production of fermented moist feed for chickens and effects on the gastrointestinal environment." Thesis, University of Plymouth, 2008. http://hdl.handle.net/10026.1/2222.

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Fermented feed technology is a biosafe method of feed preparation and fermentation improves feed quality. Factors affecting lactic acid production in fen-nented moist feed for chickens and the influence of fermented feed on the gastrointestinal environment of chickens were investigated. Water quality was observed to affect lactic acid production in fermentation of cereals (maize, sorghum, wheat and barley). The presence of calcium carbonate in the fermentation mixture significantly (P<0.01) reduced lactic acid production from maize, sorghum and wheat. Grain particle size did not significant

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30

Clarke, Emily Jane. "Nutritional value of soya beans for broiler chicks." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366471.

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31

Pheko, Lieketseng Gladys. "Effects of feeding flaxseed and probiotic supplementation to layers on egg cholesterol and fatty acid composition." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0005/MQ44246.pdf.

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32

Díaz, Gómez Joana. "High-carotenoid maize as feed and food component: mycotoxin contamination, thermal processing, bioavailability and poultry meat production." Doctoral thesis, Universitat de Lleida, 2017. http://hdl.handle.net/10803/405891.

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El panís HC (de l'anglès high-carotenoid) va ser modificat genèticament per acumular alts nivells de carotenoides, utilitzant com a base un panís blanc sud-africà (M37W). Durant tres collites consecutives (2013, 2014 i 2015), es van cultivar el panís HC i la seva línia isogènica (M37W) en un camp experimental a Lleida (Catalunya, nord-est d'Espanya). Fusarium spp. va infectar la majoria de grans de panís d'ambdós tipus, el que va originar que es donés contaminació per fumonisines en les dues varietats de panís en tots els anys d'estudi, tot i que la proporció de grans contaminats va ser substa

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33

Calais, Andreas. "Poor welfare or future investment? Different growth pattern of broiler breeders." Thesis, Linköpings universitet, Biologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-118552.

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The parental stock of meat type chickens (broiler breeders) are commonly feed restricted to decrease their rapid growth and the issues associated with it. Among these birds, chronic hunger and stress are the most prominent welfare concerns and mass heterogeneity within flocks a major management challenge. The present study compared small and large broiler breeders of the same age within a flock, with the hypothesis that small birds would show signs of poorer welfare indicated by higher corticosterone concentration and heterophil/lymphocyte ratio as a consequence of higher experienced feed rest

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34

Fourie, Juan-Louis. "The effects of a multiple-enzyme combination in maize-soya diets for broiler chickens." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/425.

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35

García, Portillo Óscar Amilcar. "Effect of the partial substitution of a commercial feed for corn meal on growth performance of chickens." BYU ScholarsArchive, 1999. https://scholarsarchive.byu.edu/etd/5367.

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Nutrition is a primary human need. Families often will raise their own animals to meet these nutritional needs. However, high feed costs can severely limit the viability of these small family enterprises. This study addressed ways to improve poultry production as a means for families to ameliorate their diets and increase income. Research was conducted at the Centro Universitario de Oriente (CUNORI), Chiquimula, Guatemala. For this study, commercial poultry feed was supplemented with corn flour at three treatment levels and fed to poultry. Results indicated that partial substitution of commerc

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36

Payne, Steven George. "The phosphorus availability of feed phosphates in broilers." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/1859.

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Thesis (MscAgric (Animal Sciences))--University of Stellenbosch, 2005.<br>Broiler diets are supplemented with feed phosphates to ensure that adequate available phosphorus is provided in the diet to meet the bird’s requirements. These feed phosphates make a considerable contribution to the total available phosphorus in the diet and small differences in their availability may have significant effects on whether the bird’s requirements are met or not. The variation in availability of phosphorus between feed phosphates belonging to different classes and between feed phosphates of the same generic

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37

Lang, Ian Roberts. "The effects of restricting feed quantity and feeder space on the behaviour and production of commercial broiler chickens." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0034/MQ47339.pdf.

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38

Puthumana, Amal Babu. "Effect of feed ratio and pre-treatment on methane yields during anaerobic co-digestion of sugarcane bagasse and trash with chicken manure." Thesis, Griffith University, 2020. http://hdl.handle.net/10072/393971.

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Australia is one of the major producers and exporter of agricultural products. Annually, Australian agriculture produces approximately 151 Tg CO2 equivalent emissions. The use of fossil fuels in crop cultivation, harvesting and transportation are considered as the primary source of these greenhouse gas (GHG) emissions. Moreover, agronomic management and crop residues left in the field also contribute to these GHG emissions. Alternative waste management practices include the use of crop residues and agro-wastes as feedstocks for bioenergy production. Anaerobic digestion is considered as sustain

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39

Kwak, Wansup. "Solubility, degradability and utilization by ruminants of broiler litter processed by ensiling, deepstacking and composting." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-07122007-103927/.

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40

Cervantes, Cevallos Carlos Ángel. "Replacement of fish meal by meal worm (Eisenia foetida) in the feed of broilers as an alternative source of protein." BYU ScholarsArchive, 2005. https://scholarsarchive.byu.edu/etd/5346.

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This investigation was conducted in the rural community of Cuambo, located in the northeast of Imbabura province, in the Mira river basin of Salina parish, at 1530 meters above sea level and with an average temperature of 19 C. The principal objective of this investigation was to evaluate the effect of four levels of substitution of fish meal for earthworm meal in broiler chicken diets. The fieldwork occurred in two stages over the course of 20 months: A. Creation of the feed: This step lasted from the installation of an earthworm culturing area through the cultivation, harvest, and drying of

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41

Ubhayasekera, S. J. Kumari A. "Sterols and oxysterols : occurrence and analysis in by-products feed fats and animal tissues /." Uppsala : Dept. of Food Science, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200947.pdf.

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42

Brümmer, Mieke. "The effect of yeast cell wall preparations on salmonella colonisation, gastrointestinal health and performance of broiler chickens." Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-04212008-112014.

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43

Kruger, Anna Christina Magdalena. "The effect of different management practices on the feed intake and growth rate of ostrich chicks." Thesis, Nelson Mandela Metropolitan University, 2008. http://hdl.handle.net/10948/834.

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Different management techniques were studied, at the Kromme Rhee Experimental Farm near Stellenbosch, in order to stimulate feed intake of ostrich chicks and to determine the effect on their growth rate. A first experiment was conducted to determine the effect of different dietary flavourants on the feed intake of ostrich chicks. Ostrich chicks (1-28 days of age), with no previous exposure to flavourants showed a strong preference for salty feed. Another experiment determined the effect of different colourants on the feed intake of ostrich chicks. Exposure of chicks to feed coloured artificial

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44

Du, Plessis J. J. P. (Johannes Jacobus Pieter). "The effect of different dietary levels of energy and protein on the production and body composition of broiler breeders." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51966.

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Thesis (MScAgric)--University of Stellenbosch, 2000<br>ENGLISH ABSTRACT: A flock of 500 Hybro broiler breeders were employed to study the effect of different levels of protein and energy on production and body composition. The daily lysine intake of the birds were 900, 1050, 1200 and 1350 mg respectively, each fed in diets with a daily energy intake of 1800 and 2000 kJ ME to provide a 4 x 2 factorial design. Lysine was used as the reference amino acid in the experiment and all other amino acids were kept in a constant ratio in every experimental diet. The total production was divided int

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45

Alsudani, Ali A. K. "Investigation into the effects of probiotic, prebiotic and synbiotic feed supplements on gut microbiota, immune function and performance of broiler chickens." Thesis, Nottingham Trent University, 2018. http://irep.ntu.ac.uk/id/eprint/35002/.

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The aim of this project was to evaluate the effects of probiotics, prebiotics and synbiotics on the gut ecosystem, immune function and growth parameters of broiler. The first study screened naturally occurring Campylobacter levels in four local sites and revealed the NTU broiler research unit and the NTU animal unit laying hens were Campylobacter free, but a small holding with laying hens was positive and the commercial broiler farm was negative until thinning, after which it was positive. The second study investigated possible delivery routes of a novel strain of Lactobacillus johnsonii (FI97

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46

Cline, Mark Andrew. "Corticotrophin Releasing Hormone Modulation of Feed Intake, Gastric Motility, and Behavior in Low and High Body Weight Selected Lines of Chickens." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/27725.

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The effect of intracerebroventricular (ICV) injection of corticotrophin releasing hormone (CRH) and related compounds on appetite, behavior, and gastric motility in lines of chickens, one selected for low body weight (LWS) and the other high body weight (HWS), was determined. Nucleotide sequence and expression patterns of the CRHr2 receptor, involved in appetite regulation, were also determined. Some individuals of the LWS line are anorexics and many die simply from not eating while some individuals in the HWS line are compulsive eaters and exhibit obesity. CRH is a 41 residue peptide that

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47

Liu, Han-Ken. "Effects of feed restriction and duration of the reproduction period on reproduction hormones and follicular development in broiler breeder hens." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1092249440.

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Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xvii, 275 p.; also includes graphics (some col.) Includes bibliographical references (p. 239-275). Available online via OhioLINK's ETD Center

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48

Landers, Kristin Lynn. "Evaluation of the use of alfalfa diets as an alternative to feed deprivation for the induction of molt in commercial laying chickens." Diss., Texas A&M University, 2004. http://hdl.handle.net/1969.1/1066.

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Induced molting is process used by commercial producers to extend the reproductive life of a laying hen. Typically, producers deprive hens of feed for a period of 7-14 days while reducing the amount of light exposure to the hens. This allows for regression of the reproductive tract and for a second cycle of egg production to occur. However, induced molting by feed deprivation has been shown to increase the hen's risk of becoming infected with pathogenic bacteria, such as Salmonella. This increased risk could mean an increase in contaminated eggs or egg products, which causes concerns for pub

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49

Fisher, Tatijana. "SPECIALTY POULTRY PRODUCTION: IMPACT OF GENOTYPE, FEED STRATEGIES, ALTERNATIVE FEEDSTUFFS, AND DIETARY ENZYMES ON THE GROWTH PERFORMANCE AND CARCASS CHARACTERISTICS OF HERITAGE BREED CHICKENS." UKnowledge, 2016. http://uknowledge.uky.edu/animalsci_etds/66.

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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

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McGovern, Ruth Helen. "Growth performance, carcass characteristics, and the incidence of ascites in broiler chickens in response to short term feed restriction, temperature fluctuations, and litter oiling." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq22637.pdf.

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