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Дисертації з теми "Ruminants Feeding and feeds Evaluation"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 28 січня 2023

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1

Mohamed, Neijat. "Assessing the feeding value of pea straw and evaluating biological methods to improve its utilisation by ruminants." Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09AS/09asm697.pdf.

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Copies of the author's previously published articles inserted. Bibliography: leaves 142-159. Provides information on the significance of pea straw as a ruminant feed and the potential of two biological techniques for improving its feeding value.

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2

Upton, Erlanda. "Development and evaluation of polymer coated urea as a potential slow-release urea supplement for ruminants." Thesis, Stellenbosch : Stellenbosch University, 1999. http://hdl.handle.net/10019.1/51199.

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Thesis (MScAgric)--Stellenbosch University, 1999.<br>ENGLISH ABSTRACT: The rate of hydrolysis of urea in the rumen of animals is a major limitation when considering the substitution of natural protein with urea in the formulation of rations. The aim of this study was to evaluate polymer coated urea prills with variable coating thickness and evaluate its potential as a slow-release NPN compound. A new slowrelease urea compound, made by coating prilled feedgrade urea with a co-polymer of urea-formaldehyde resin and a castor-coconut alkyd was initially evaluated for urea-nitrogen concentra

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3

Cuthbertson, Abla Zehour. "Effect of animal type or treatment on the efficiency of lean meat production and the fatty acid composition of meat : thesis submitted for the degree of Master of Agricultural Science." Title page, summary and contents only, 1988. http://web4.library.adelaide.edu.au/theses/09A/09ac988.pdf.

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Includes bibliographical references (leaves 196-220) Studies the growth, body composition, feed intake of grazing animals, the use of anabolic agents, fatty acid composition of ruminants fats; and, the effect of saturated fat on human health.

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4

Mabuza, Thembisile Veronicah. "Evaluating long term effects of fire frequency on soil seed bank composition and species diversity in a semi-arid , South African savanna." Thesis, University of Fort Hare, 2011. http://hdl.handle.net/10353/346.

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Fire is generally used as a management tool for different vegetation types such as savannas and grasslands in southern Africa. In the False Thornveld of the Eastern Cape, fire is commonly used to control bush encroachment and to increase grass production, as grasses are important source of forage for domestic livestock. At the University of Fort Hare farm in the Eastern Cape, a trial was set up in 1980 to investigate the effect of burning frequency on vegetation. There are six treatments replicated twice in a completely randomized design on a 100 m x 50 m plots. The treatments comprise no burn

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5

Llorente, Eduardo Gallo. "Ammonia and urea treatment of wheat straw for feeding to ruminants." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/91048.

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The effect of treatment with 3% aqueous ammonia and 5.3% urea plus jackbean meal on the nutritive value of wheat straw was investigated. The moisture content of the straw was raised to 40% by addition of water. Crude protein and in vitro dry matter digestibility were highest for the bottom layers, which had the highest moisture. The mean temperature during the first 4 wk post treatment was 11.2 C. Four diets were fed to sheep: untreated straw 1) alone or 2) with 20 g/d urea at feeding time 3) ammonia-treated straw, and 4) urea-treated straw. All diets contained 80 g of liquid molasses, 10 g of

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6

Mukisira, Ephraim Amiani. "The influence of alkaloids on voluntary intake and performance by ruminants fed diets containing lupin seed in Kenya." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41730.

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Lupin seed has the potential to be used as a protein supplement in ruminant rations, but its usage is restricted by the presence of alkaloids. Experiments were conducted with the aim of determining whether the removal of specific toxic alkaloids, lupanine and 13-hydroxylupanine, from crushed lupin seed (CLS) would improve the organic matter intake (OMI) and average daily gains (ADG) in lambs, and also improve the lactation performance in dairy cows. Effects on liver function in lambs were also investigated. An additional study on the effects of the detoxification of CLS on the degradation of p

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7

Ilse, Breanne Rose. "Effects of Linseed Meal on Growth and Reproductive Performance in Ruminants." Thesis, North Dakota State University, 2011. https://hdl.handle.net/10365/28744.

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Linseed meal (LSM) was fed to ovariectomized ewes exposed to estradiol 17-? (E2) implants over time, and LSM was supplemented to beef cows during late gestation and early lactation to evaluate the estrogenic potential of the phytoestrogen secoisolariciresinol diglycoside (SDG) found in LSM. Forty-eight ovariectomized ewes were fed a diet containing 12.5% LSM for 0, 1, 7, or 14 d and implanted with estradiol-17? (E2) for 0, 6, or 24 h before tissue collection. Uterine cellular proliferation, vascularity, and the expression of the angiogenic factors and their receptors were recorded.

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8

URIAS, ALEJANDRO RUBEN. "EFFECT OF DIETARY CONCENTRATE LEVELS ON IN SITU DRY MATTER DISAPPEARANCE, NEUTRAL DETERGENT FIBER DISAPPEARANCE AND DIGESTION KINETICS OF ALFALFA HAY, WHEAT STRAW AND STEAM PROCESSED AND FLAKED MILO GRAIN." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183830.

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A replicated 3 x 3 latin square design (3 periods and 6 rumen fistulated steers) was utilized to investigate the effect of dietary concentrate levels (30, 60 and 90%) on the in situ disappearance of dry matter (ISDMD) and neutral detergent fiber (NDF) and kinetics of fiber digestion of alfalfa hay, wheat straw and steam processed and flaked milo (SPFM). Concentrate levels of 30 and 60% did not affect (P > .05) ISDMD or NDF disappearance from any of the substrates. However, ISDMD and NDF disappearance of all substrates were depressed (P < .05) by the 90% concentrate diet. The degradation of the

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9

DELFINO, FRANCIS JOSEPH. "IDENTIFICATION AND CHARACTERIZATION OF CEREAL GRAIN TISSUES RESISTANT TO RUMEN MICROBIAL DIGESTION USING IN SITU, IN VITRO AND SCANNING ELECTRON MICROSCOPY TECHNIQUES." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183909.

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A series of studies was conducted using SEM in conjunction with chemical analysis, in situ and in vitro digestion techniques, to characterize the anatomical components from barley, corn, sorghum and wheat grains which constitute "fiber" and investigate their susceptibility to rumen microbial digestion. Fractured grains were used to identify anatomical features and cell types prior to and after extraction or digestion. Certain anatomical features, including pericarp tissue, aleurone cells, endosperm cell walls, corneous and floury endosperm tissue and lemma and palea from barley, were easily id

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10

Kenna, Twila M. "Gluconeogenesis in the liver of growing and lactating ruminants: the influence of ration composition and stage of lactation." Diss., Virginia Polytechnic Institute and State University, 1991. http://hdl.handle.net/10919/71147.

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Thirty six: Holstein bull calves were assigned to a 3X3 factorial design with ration physical forms of chopped hay (CH), ground hay (GR) and all concentrate (CONC) and rumen degradable nitrogen (RDN) of 30, 45 and 60%. Metabolic body weight, liver weight and blood glucose were greatest in CONC-fed calves. Neither dry matter nor ash content of liver tissue was affected by either physical form or RDN. Within physical form, protein content was highest and fat lowest in livers of CH-fed caIves. Within RDN, livers of calves feel 30% RDN rations had lowest protein and highest fat content. RDN percen

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11

Yulistiani, Dwi. "The nutritive value of rice straw varieties for ruminants." Title page, Contents and Abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09AS/09asy95.pdf.

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Bibliography: leaves 102-114. This study evaluates the difference in the nutritive value of rice straw varieties using chemical composition and digestibility measurements. It assesses several methods for improving the nutritive value of rice straw and the effect of urea treatment and rice straw quality on the colonisation of ruminal fungi and the characteristics of stem tissue structure.

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12

Gotterbarm, Götz. "Evaluation of whole soybeans in swine diets." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61172.

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A laboratory assessment and three in vivo trials were conducted to measure the nutritive value of whole soybeans subjected to various methods of heat treatment. No significant differences were found for ADG and feed conversion ratio. There was a significant reduced proportion of saturated-to unsaturated fatty acids in the loin eye area of pigs fed whole soybean products, when compared to soybean meal control. Extruded whole soybeans resulted in a lower degree of unsaturation than the other heat treated whole soybeans. Whole soybean products were evaluated for their digestibility in weanling (2

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13

Issak, Ibrahim Haji. "Evaluation of dairy cattle rearing practices and feeding management strategies in selected commercial dairy farms in Nakuru district, Kenya." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=25503.

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14

Boitumelo, Wame S. "Evaluation of stover management practices or ameliorative strategies on the utilization of tanniferous feeds by ruminants." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ43246.pdf.

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15

Goosen, Liezel. "The effect of an exogenous fibrolytic enzyme on forage digestibility parameters." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/50141.

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Thesis (MScAgric) -- Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: The ruminant has the ability to utilize forages more efficiently than any other production animal. The utilization of forage fibre is an important aspect of ruminant production systems, as this is the main source of energy available to the animal. The availability of high-fibre forage nutrients is, however, restricted by cell wall degradability, and since low quality forages contribute a great deal to ruminant production systems worldwide, the improvement of this degradation process is of major economic importance.

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16

Edwards, Nicholas John. "Nitrogen assimilation by rumen microorganisms: a study of the assimilation of ammonia by rumen bacteria in vivo and in vitro." Title page, table of contents and abstract only, 1991. http://web4.library.adelaide.edu.au/theses/09PH/09phe2657.pdf.

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17

Ranwedzi, Ndivhuho Emmanuel. "An evaluation of family poultry production systems in the Northern region." Thesis, Port Elizabeth Technikon, 2002. http://hdl.handle.net/10948/93.

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Introduction : Family Poultry (FP) are birds of indigenous breeds living in almost symbiotic relationship with human communities. The chickens are usually free ranging, or have very limited restrains on their access to the village environment. African livestock population statistics for 1995 indicates poultry to be the most numerous species of farm animal (Anonymous, 1996a). More than 80% of poultry are kept in rural areas and contribute substantially to annual egg and meat production (Sonaiya, 1997). Throughout Africa poultry production stems from ancient traditional practices. FP is the most

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18

Abazinge, Michael D. A. "Studies of methods of preserving and enhancing fermentation, nutritional value and palatability of seafood waste for feeding ruminants." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/49972.

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19

Kirk, David J. "Effects of feeding lasalocid and monensin upon mineral status of steers, and partial absorption and renal handling of minerals in sheep." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54218.

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Studies were conducted to determine the effects of feeding lasalocid and monensin upon mineral status of ruminants, changes in digestive and renal physiology which bring about altered mineral status, and the effects of dietary K upon the actions of ionophores. Two 84-d grazing trials were conducted with steers fed no ionophore, 200 mg lasalocid, or 150 mg monensin. Monensin tended to increase gain of steers, but lasalocid had no effect. Feeding supplemental lasalocid and monensin altered Ca, P, Mg, Na, K, Cu, Fe and Zn status of grazing steers, but effects were not consistent. Twenty-four cr

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20

Silva, Tâmara Lúcia dos Santos [UNESP]. "Qualidade da carne de cordeiros alimentados com levedura seca inativa (saccharomyces cerevisiae) da cana-de-açúcar em substituição ao farelo de soja." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/105098.

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Made available in DSpace on 2014-06-11T19:33:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-12-17Bitstream added on 2014-06-13T21:06:39Z : No. of bitstreams: 1 silva_tls_dr_botfmvz.pdf: 469730 bytes, checksum: fef540eada210b35cbd086f20dc1bed2 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Universidade Estadual Paulista (UNESP)<br>O objetivo do presente estudo foi avaliar a qualidade da carne de cordeiros mestiços Santa Inês alimentados com levedura (Saccharomyces cerevisiae) inativa da cana-de-açúcar em substituição ao farelo de soja. Foram ofertad

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21

Silva, Tâmara Lúcia dos Santos 1984. "Qualidade da carne de cordeiros alimentados com levedura seca inativa (saccharomyces cerevisiae) da cana-de-açúcar em substituição ao farelo de soja /." Botucatu : [s.n.], 2012. http://hdl.handle.net/11449/105098.

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Orientador: André Mendes Jorge<br>Coorientador: José Teodorico de Araújo Filho<br>Banca: Cledson Augusto Garcia<br>Banca: Paulo Roberto Meirelles<br>Banca: Cristiana Andrighetto<br>Banca: Janaina Haddich Conte<br>Resumo: O objetivo do presente estudo foi avaliar a qualidade da carne de cordeiros mestiços Santa Inês alimentados com levedura (Saccharomyces cerevisiae) inativa da cana-de-açúcar em substituição ao farelo de soja. Foram ofertadas dietas com quatro níveis de substituição (0, 33, 66 e 100%) de levedura aos animais que foram abatidos com 35 kg de peso vivo. Foram realizadas as análise

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22

Nolte, Joubert van Eeden. "An evaluation of degradable protein and nonprotein nitrogen on intake and digestion by Dohne merino sheep fed wheat straw." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51597.

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Thesis (MSc)--Stellenbosch University, 2000.<br>ENGLISH ABSTRACT: South Africa, like many other developing countries throughout the world, has a rapidly growing human population, resulting in a consequent increased demand for food. Ironically, this increased food supply has to be produced on a smaller area of available agricultural land, which means that agricultural production processes have to become more efficient. Furthermore, the majority of the people in these countries are unschooled and poverty is a common phenomenon. Therefore, animal scientists are faced with the challenge and t

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23

Lakay, Francisco Martin. "Fungal enzymes as animal feed additives." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52280.

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Thesis (MSc)--Stellenbosch University, 2001.<br>ENGLISH ABSTRACT: The use of fungal enzymes as ruminant feed digestibility enhancers was investigated. Currently, ruminants may not digest 38 to 80 % of fibrous forages' content. A renewed interest in the potential of feed enzymes for ruminants was prompted by the high costs of livestock production, together with the availability of newer enzyme preparations. Direct application of enzyme preparations can improve in vitro dry matter (DM) and neutral detergent fibre (NDF) degradation, indicating that direct-fed fibrolytic enzymes may be effect

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24

Walsh, Mark Gordon. "Evaluation of dietary carbohydrate utilization by captive sablefish (Anoplopoma fimbria)." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30429.

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Carbohydrates have variable digestibilities and metabolizable energy values in carnivorous fish. Simple sugars are generally more digestible than complex polysaccharides, and low levels of dietary carbohydrate may contribute more metabolizable energy than high levels. Two experiments were conducted to study the effects of dietary level and processing treatment of wheat starch on the digestibility of diets fed to sablefish (Anoplopoma fimbria), in different regions of the digestive tract. Moreover, an experiment was undertaken to determine if the dietary concentration of an indigestible externa

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25

Mapekula, Nwabisa Nolwazi. "Quantitative evaluation of starch determination in feed samples using Near Infra-red Reflectance." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1015617.

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In an attempt to reduce the costs and turn around times experienced with outsourcing starch analysis in finished feed products, the company decided to invest in a NIR instrument to carry out such analyses in house. The particular instrument purchased by the company comes with a build in calibration for specific finished feed products and the main objective of this investigation was to evaluate whether the instrumentation and build in calibration gives reliable analyses of a finished poultry feed. The results obtained showed that : - The NIR results obtained have a positive bias compared to the

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26

Farhat, Antoine G. "Nutritional evaluation of industrial food wastes in ducks diets." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0006/MQ29689.pdf.

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27

Clark, Gabriel Willis. "An Economic Evaluation of Winter-feeding Strategies for Lactating Organic Dairy Cows Utilizing Different Forage and Concentrate Feeding Systems in Maine." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/ClarkGW2009.pdf.

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28

St-Laurent, Anne-Marie. "Evaluation of methods and effects of feeding sodium bicarbonate in conventional diets to dairy cows in early lactation and effects of feeding buffers prepartum on performance in early lactation." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66132.

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29

Baurhoo, Bushansingh. "Evaluation of purified lignin and mannanoligosaccharides as alternatives to antibiotic growth promoters in poultry production." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100763.

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The potential of lignin and mannanoligosaccharides (MOS), as alternatives to antibiotic growth promoters was evaluated in broilers. Dietary treatments included: (1) negative control (CTL-, antibiotic free); (2) positive control (CTL+, 11 mg/kg virginiamycin); (3) MOS (diet 1 + Bio-Mos: 0.2% to 21 d and 0.1% thereafter); (4) LL (diet 1 + 1.25% Alcell lignin); (5) HL (diet 1 + 2.5% Alcell lignin). Bodyweight and feed conversion were not different when broilers were fed the CTL+, MOS, LL or HL diet. Birds fed MOS or LL had increased jejunum villi height (P < 0.05) and greater goblet cell numbe

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30

Swart, Etheresia, and Maryna Lehmann-Maritz. "Evaluation of near infrared reflectance (NIR) spectroscopy to determine the nutrient composition of raw materials and compound ostrich feeds." Thesis, Nelson Mandela University, 2017. http://hdl.handle.net/10948/13779.

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The chemical analysis of feed samples can be time consuming and expensive. The use of near infrared reflectance (NIR) spectroscopy was evaluated in a range of studies as a rapid technique to predict the chemical constituents in feedstuffs and compound ostrich feeds. The prediction of accurate results by NIR spectroscopy relies heavily upon obtaining a calibration set which represents the variation in the main population, accurate laboratory analyses and the application of the best mathematical procedures. This research project was designed to meet five objectives: The first objective was to de

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31

Herrera, y. Saldana Rolando Ernesto. "The effect of synchronization of protein and starch degradation in the rumen on nutrient utilization and milk production in dairy cows." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184373.

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Four studies were conducted to determine the effect of synchronization of protein and starch degradation on nutrient utilization, microbial protein synthesis and milk production in dairy cows. In Experiment 1, five cereal grains and five protein supplements were compared for extent of solubility and degradability of their starch and nitrogen fractions. Results indicated large differences which permitted their ranking from high to low degradability as follows: grains, oats > wheat > barley > corn > milo protein supplements, soybean meal > cottonseed meal, (CSM) > corn gluten meal > brewers drie

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32

Useni, Bilungi Alain. "Effect of exogenous fibrolytic enzymes on fibre and protein digestion in ruminant animals." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6744.

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Thesis (MScAgric (Animal Sciences))--University of Stellenbosch, 2011.<br>Includes bibliography.<br>ENGLISH ABSTRACT: Forages are the main feed components in ruminant production systems for the reason that they are often the major source of energy available to the animal. However, only 10 to 35% of energy intake is available as net energy because the digestion of plant cell walls is not complete. This can significantly affect livestock performance and profits in production systems that use forages as a major source of nutrients of the diet. As a result of low and variable nutritive values

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33

Hossain, M. A. "Nutritional evaluation of some Bangladeshi oilseed by-products as dietary protein sources for common carp (Cyprinus carpio L)." Thesis, University of Stirling, 1988. http://hdl.handle.net/1893/1803.

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The nutritional suitability of some Bangladeshi oilseed by-products (mustard, Brassica juncea; linseed, Linum usitatissimum; sesame, Sesamum indicum) as fish meal substitutes in carp diets was investigated. These protein sources were shown to cause depressed growth and feed efficiency when substituting 25% or more of the fish meal protein in semi-purified diets. However, the use of these oilseed meals in combination was found to be more effective than that of single sources. Supplementation of plant protein diets with crystalline EAA improved their nutritive value. Growth performance was bette

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34

McDougall, N. Ruth. "The evaluation of raspberry pomace as a feedstuff for growing pigs." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29580.

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Raspberry pomace, consisting of seeds, pulp and added rice hulls, is the residue from the pressing of raspberries for juice and concentrate production. Through the determination of chemical composition by laboratory analyses and the measurement of feeding value in animal trials, the pomace was evaluated as a feedstuff for growing pigs. Pomace contains 11.1% crude fat, 10.0% crude protein, 59.5% total dietary fibre, 7.4% soluble carbohydrates, and a gross energy level of 5220 kcal*kg⁻¹. The acid detergent residue of the pomace contains 11.7% lignin, 6.0% cutin, 2.2% acid detergent ash and 26.0

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35

Len, Ninh Thi. "Evaluation of fibrous feeds for growing pigs in Vietnam : effects of fibre level and breed /." Uppsala : Dept. of Animal Nutrition and Management, Swedish University of Agricultural Sciences, 2008. http://epsilon.slu.se/200822.pdf.

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36

Migwi, Perminus K. "Improving the nutritive value of low quality roughage for ruminants by ensiling with citrus pulp and poultry litter." Title page, contents and summary only, 1997. http://web4.library.adelaide.edu.au/theses/09AS/09asm636.pdf.

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Bibliography: leaves 107-130. This study evaluates quality of fermentation of the silage and also its nutritive value to ruminants on the basis of "in vitro" and "in sacco" digestability. Animal response to the silage is also evaluated in an "in vivo" digestability and nitrogen balance trial with Australian Merino sheep. The objective of this thesis is to investigate the opportunities for utilising citrus pulp and poultry litter to improve the nutritive value of wheat straw.

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Malan, Marcia. "The effect of sugar, starch and pectin as microbial energy sources on in vitro forage fermenation kinetics." Thesis, Stellenbosch : Stellenbosch University, 2009. http://hdl.handle.net/10019.1/42061.

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Thesis (MScAgric) -- Stellenbosch University, 2009.<br>ENGLISH ABSTRACT: Ruminants have a compound stomach system that enables them to utilize forages more efficiently than monogastric animals. However, forages alone do not contain sufficient nutrients to meet the requirements of high producing dairy cows. Forages are high in fibre and their nutrient availability depends on the degree of cell wall degradability. Improvements in forage fermentation would increase energy intake and subsequently milk production and performance by dairy cows. It is therefore important to find ways to improve f

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Retief, Nicky. "Breed differences in ruminal digestibility of forages in dairy cows receiving high concentrate diets." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51641.

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Thesis (MScAgric)--University of Stellenbosch, 2000.<br>ENGLISH ABSTRACT: Statistical analysis was conducted on data from two Elsenburg herds, containing 105 Jersey and 232 Holstein cows. The data was examined for external factors which may affect milk yield and milk composition. The data consisted of 337 first lactation records, taken over a 20 year time period. Breed of cow had an effect on milk yield, butterfat and protein production, as did the year in which the cows were born and the age of the heifer at first calving. There was a significant interaction between the breed and year o

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Hajen, Walter Ernesto. "Evaluation of feedstuff digestibility in post-juvenile chinook salmon (Oncorhynchus tshawytscha) in seawater." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29861.

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Feed accounts for 40% to 60% of the operating costs of Pacific salmon farms. Presently, commercial diets for Pacific salmon in seawater are formulated according to the nutrient requirements of juvenile chinook salmon and digestibility information derived from studies on rainbow trout in fresh water. Information on feedstuff digestibility by Pacific salmon is completely lacking, regardless of life history stage. Hence, this thesis was undertaken to determine the apparent digestibility of organic matter, crude protein and energy in conventional and novel feedstuffs using post-juvenile chinook sa

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Potts, Warren Mason. "A nutritional evaluation of effluent grown algae and zooplakton as feed ingredients for Xiphohorous helleri, Poecilia reticulata and Poecilia velifera (Pisces : Poeciliidae)." Thesis, Rhodes University, 1998. http://hdl.handle.net/10962/d1005151.

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The aim of this study was to evaluate the nutritional value of algae and zooplankton grown in an algal integrated ponding system for poeciliids. The available information on the nutritional requirements of poeciliids was compared with a proximate analysis of the algae and zooplankton. The effluent grown algae and zooplankton had a crude protein value of 41.47 ± 0.2% and 36.84 ± 0.3%, a lipid content of 4.8 ±. 0.4% and 11.1 ± 0.8% and a carbohydrate content of 35.13 ± 0.8% and 31.06 ± 0.6% respectively. These values compared favourably with those of the known nutritional requirements of poecili

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Hutton, Peter. "Antimicrobial plants of Australia have the potential to prevent lactic acidosis in ruminants." University of Western Australia. School of Animal Biology, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0159.

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[Truncated abstract] Antimicrobial growth promoters are added to feed to prevent lactic acidosis in ruminant animals by selectively inhibiting rumen bacteria that produce lactic acid. However, recently imposed or impending bans on the use of antimicrobial growth promoters in animal production have lead to a critical need to find practical alternatives that are safe for the animal and consumer and that obtain similar production benefits. I investigated bioactive plants of Australia for their potential to prevent lactic acidosis in ruminants. The unifying hypothesis tested was that plants would

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Hosking, Brenton John. "Evaluation of nutrient intake and digestion in grazing sheep receiving supplements : thesis submitted for the degree of Doctor of Philosophy." Title page, summary and contents only, 1987. http://web4.library.adelaide.edu.au/theses/09PH/09phh826.pdf.

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Includes bibliographical references (leaves 290-309) Investigates aspects of the intake and utilization of barley grain and grain legume supplements by sheep fed low quality pasture hay and when grazing mature summer pastures.

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Lategan, Elna. "The effect of rumen inert fat supplementation and protein degradability in starter and finishing diets on veal calf performance and the fatty acid composition of the meat." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51969.

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Thesis (MSc)--Stellenbosch University, 2000.<br>ENGLISH ABSTRACT: Six groups each with six Friesian bull calves were used in this investigation and slaughtered at 20 weeks of age. Calves received a low- (LD) or high (HD) degradable protein diet, each with or without rumen inert fat supplementation. Two commercial fat sources were used, Morlae (m) and Golden Flake (gf), included at 2.5% of the diet. A commercial milk replacer (Denkavit) was fed at 4L for 42 days, followed by 2L until weaning at 49 days of age. The starter diets were fed ad lib. from day 14 to 10 weeks of age and finishing

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Mamani, Condori Justiniano. "Evaluation of agronomic performance of forage grasses in Tiahuanaco." BYU ScholarsArchive, 2004. https://scholarsarchive.byu.edu/etd/5395.

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Most families in the area of Tiahuanaco, Bolivia participate in livestock production, mainly cattle breeding. The primary feed sources for livestock in this area are native grasses, barley, and, to a smaller degree, oats. These grasses have low yield because of climate and soil conditions. This area does not have enough forage, especially during the dry season, and the animals are not regularly fed during the year. Consequently, animal production is low. This research was conducted during 2001 and 2002 at the Bolivian Catholic University campus, Farmer’s Academic Unit of Tiahuanaco, Ingavi Pro

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Harrison, Harry. "An evaluation of the role of ammonia load in the control of food intake by lambs fed fresh and ensiled alfalfa, (Medicago sativa) /." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68180.

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The problem of reduced appetite in ruminants fed silages persists but the factors responsible for reduced intake of silage have not been elucidated. This study was conducted with the objective of testing the hypothesis that ammonia loading in ruminants could suppress appetite. In a 5 x 5 latin square design, sheep were fed alfalfa silage (S), fresh alfalfa (FA), and FA with added equimolar amounts (450 mmol. kg$ sp{-1}$ feed DM) of NH$ sb4$Cl, NH$ sb4$HCO$ sb3$ and urea; the latter was infused directly into the rumen. The silage had a DM content of 33.1%, pH 4.4, and a lactic acid content of 4

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Burger, Willem Jacobus. "Die verbetering van die benutting van laegraadse ruvoer vir wol- en vleisproduksie deur aanvulling van beskermde proteienbronne en/of aminosure." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52798.

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Thesis (MScAgric) -- University of Stellenbosch, 2002.<br>ENGLISH ABSTRACT: Low quality roughage is often used in the Western Cape as the only source of roughage for the young growing ruminant. Production levels of these animals is unsatisfactory and therefore supplementation is required. It is necessary when small grains are fed to also include protein sources in the diets. For high production, these protein sources must also be protected against rumen degradation. Good results are reported with the treatment of sunflower oilcakemeal (SFOCM) with formaldehyde (0.86 g formaldehyde per 10

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Rodriguez, Peñaranda Boris. "Evaluation of the effects of saka or suncho (Viguera pascensis) in the feeding of guinea pigs (Cavia aparea porcellus) in the community of Sococoni, Muñecas province, La Paz." BYU ScholarsArchive, 2009. https://scholarsarchive.byu.edu/etd/5430.

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The following work was conducted in the community of Socononi, La Paz, in which we analyzed the effects of three different portions of saka or suncho (viguera pascensis) during the growth, and fattening stages in guinea pigs (cavia aparea porcellus). We used 32 mestizo guinea pigs (improved Peruvian creole breed) weaned 21 days after birth. Four treatments were administrated to the 32 animals (16 males and 16 females), the treatments were the following: (R0) or witness, consisting of corn alone, (R2) consisting of 30% of saka, (R3) consisting of 50% of saka, and (R4) consisting of 70% saka. Th

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Stander, Hendrik Barend. "Evaluation of spirulina on the performance and pigmentation of rainbow trout." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/20905.

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Thesis (MPhil)--University of Stellenbosch, 2004.<br>ENGLISH ABSTRACT: trout was conducted at the Jonkershoek trout research station of the Division of Aquaculture, University of Stellenbosch. Treatments consisted of ten experimental diets containing increasing levels of Spirulina (0%, 0.05%, 0.1%, 0.15%, 0.3%, 0.6%, 1.25%, 2.5%, 5% and 10%). The data was analyzed through means of a one-way ANOVA and Tukey’s pair wise comparison test for significant differences between treatments for the various parameters of flesh pigmentation and growth. The results indicates that the inclusion of Spir

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Chapin, Clifford Arthur. "Protein partition and digesta flow in lactating Holsteins fed 2:1 and 1:2 soybean meal:fish meal." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/74521.

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Attempts to improve upon the crude protein feeding system have strived to characterize feedstuffs with respect to ruminal protein degradability. In vitro an in situ procedures fall short of this goal by not accounting for ruminal turnover. Six lactating cows, fitted with ruminal and duodenal cannulae, were utilized for in vivo determination of protein degradability by employing a double-marker system. Treatments were corn silage-based diets supplemented with 2:1 soybean meal:fish meal nitrogen (SF) or 1:2 soybean meal:fish meal nitrogen (FS) at levels of 15. 9 and 16.0 percent protein. Ruminal

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Van, Emmenes Liesel. "Evaluation of phytase enzymes on performance, bone mineralisation, carcass characteristics and small intestinal morphology of broilers fed maize soya bean diets." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86691.

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Thesis (MScAgric)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: The use of phytase enzymes to liberate phosphorus and other phytate bound nutrients in monogastric animal diets are becoming common practice and several commercial phytase enzymes are available on the market. Phytase manufacturers supply nutritionists with matrix values for the specific phytase, enabling nutritionists to effectively decrease the dietary concentrations of phosphorus and nutrients during diet formulation. A 32 day experiment was conducted with 5120 broiler chicks fed diets supplemented with different com

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