REPORT NO 4-H-165-LG PUB DATE Nov 91 NOTE 79P. PUB TYPE Guides Classroom Use Teaching Guides (For Teacher)(052)
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A Preliminary Note on the Embryology of <Emphasis Type="Italic">Casuarina Equisetifolia </Emphasis>, Forst
A PRELIMINARY NOTE ON THE EMBRYOLOGY OF CASUARINA EQUISETIFOLIA, FORST BY B. G. L. SWAMs (Bangalore) Received June 27, 1944 (Communicated by Prof. L. S. S. Kumar, r.A.SC.) THE remarkable discovery of Chalazogamy in Casuarina by Treub in 1891 evoked very keen interest and initiated further studies of Casuarinaceae and Amentifera~ fi'om both morphological and anatomical points of view. Certain aspects of the megasporogenesis of Casuarhza stricta was subsequently studied by Frye in 1903 and Juel (1903) recorded his observations on the origin and development of the female archesporium in Casuarina quadrivalvis. In spite of these contributions our present knowledge regarding the develop- mental stages in the life-history are far from being satisfactory. An inves- tigation of several species of the genus has been taken up by the author and a few salient features in the life-history of Casuarina equiset~folia Forst have been embodied in this preliminary note. The archesporiurn of the microsporangium is subepidermal in origin and can be differentiated by rich cell contents and conspicuous nuclei. After the formation of the endothecium, wall layers and tapetum, the microspore mother cells undergo the usual stages of the reduction divisions and form quartets of microspores arranged tetrahedrally. The quartets round off and their nuclei undergo division into tube and generative cells The pollen grains at the shedding stage are binucleate. Each ovary contains two erect ovules which arise laterally from a basal placenta (Fig. 1). The ovules are bitegnmentary, the inner integument differentiating slightly earlier than the outer; these grow upwards and organise a micropyle. -
Kansas 4-H Poultry Leader Notebook Level I Introduction for Leaders
Kansas 4-H Poultry Leader Notebook Level I Introduction for Leaders ........................................................i Parts of a Chicken......................................................................................................3 Name That Bird.......................................................................................................11 Beginning to Set Goals in Your Poultry Project......................................................19 Common Poultry Terms for Different Species........................................................23 Poultry Breeds.........................................................................................................27 Breeds of Poultry for Project and Show..................................................................33 What Bird Will I Raise?..........................................................................................41 Nutritional Needs and Problems in Poultry.............................................................45 Is Your Bird Sick?...................................................................................................51 Catching and Handling Poultry...............................................................................55 Washing That Bird...................................................................................................59 Why Do We Raise Poultry?.....................................................................................63 K-State Research & Extension ■ Manhattan Leader Notes Parts of a Chicken Poultry, -
Great Food, Great Stories from Korea
GREAT FOOD, GREAT STORIE FOOD, GREAT GREAT A Tableau of a Diamond Wedding Anniversary GOVERNMENT PUBLICATIONS This is a picture of an older couple from the 18th century repeating their wedding ceremony in celebration of their 60th anniversary. REGISTRATION NUMBER This painting vividly depicts a tableau in which their children offer up 11-1541000-001295-01 a cup of drink, wishing them health and longevity. The authorship of the painting is unknown, and the painting is currently housed in the National Museum of Korea. Designed to help foreigners understand Korean cuisine more easily and with greater accuracy, our <Korean Menu Guide> contains information on 154 Korean dishes in 10 languages. S <Korean Restaurant Guide 2011-Tokyo> introduces 34 excellent F Korean restaurants in the Greater Tokyo Area. ROM KOREA GREAT FOOD, GREAT STORIES FROM KOREA The Korean Food Foundation is a specialized GREAT FOOD, GREAT STORIES private organization that searches for new This book tells the many stories of Korean food, the rich flavors that have evolved generation dishes and conducts research on Korean cuisine after generation, meal after meal, for over several millennia on the Korean peninsula. in order to introduce Korean food and culinary A single dish usually leads to the creation of another through the expansion of time and space, FROM KOREA culture to the world, and support related making it impossible to count the exact number of dishes in the Korean cuisine. So, for this content development and marketing. <Korean Restaurant Guide 2011-Western Europe> (5 volumes in total) book, we have only included a selection of a hundred or so of the most representative. -
Evolution of Oviductal Gestation in Amphibians MARVALEE H
THE JOURNAL OF EXPERIMENTAL ZOOLOGY 266394-413 (1993) Evolution of Oviductal Gestation in Amphibians MARVALEE H. WAKE Department of Integrative Biology and Museum of Vertebrate Zoology, University of California,Berkeley, California 94720 ABSTRACT Oviductal retention of developing embryos, with provision for maternal nutrition after yolk is exhausted (viviparity) and maintenance through metamorphosis, has evolved indepen- dently in each of the three living orders of amphibians, the Anura (frogs and toads), the Urodela (salamanders and newts), and the Gymnophiona (caecilians). In anurans and urodeles obligate vivi- parity is very rare (less than 1%of species); a few additional species retain the developing young, but nutrition is yolk-dependent (ovoviviparity) and, at least in salamanders, the young may be born be- fore metamorphosis is complete. However, in caecilians probably the majority of the approximately 170 species are viviparous, and none are ovoviviparous. All of the amphibians that retain their young oviductally practice internal fertilization; the mechanism is cloaca1 apposition in frogs, spermato- phore reception in salamanders, and intromission in caecilians. Internal fertilization is a necessary but not sufficient exaptation (sensu Gould and Vrba: Paleobiology 8:4-15, ’82) for viviparity. The sala- manders and all but one of the frogs that are oviductal developers live at high altitudes and are subject to rigorous climatic variables; hence, it has been suggested that cold might be a “selection pressure” for the evolution of egg retention. However, one frog and all the live-bearing caecilians are tropical low to middle elevation inhabitants, so factors other than cold are implicated in the evolu- tion of live-bearing. -
Using Egg Density and Egg Mass Techniques for Incubation Stage Assessment to Predict Hatch Dates of Greater Flamingo Phoenicopterus Ruber Roseus Eggs
131 Using egg density and egg mass techniques for incubation stage assessment to predict hatch dates of Greater Flamingo Phoenicopterus ruber roseus eggs N. Jarrett1, V. Mason1, L. Wright2 & V. Levassor1 'The Wildfowl and Wetlands Trust, Slimbridge, Gloucestershire GL2 7BT, UK. Email: nigel. jarrett0w w t. org. uk Centre for Ecology, Evolution and Conservation, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK. Egg density and the egg mass techniques for incubation stage assess ment were developed to predict the hatch dates of Greater Flamingo Phoenicopterus ruber roseus eggs laid in captivity at WWT, Slimbridge, UK. The accuracy of each technique was tested on 20 parentally incubat ed eggs by comparing actual hatch date with predicted hatch date. For the egg mass technique a strong positive correlation existed between actual and predicted fresh mass, suggesting that model accuracy was high. Both techniques predicted hatch dates within two days 80% of the time. These techniques were found to be useful for accurate incubation stage assessment of Greater Flamingo eggs and the authors encourage aviculturalists managing captive colonies to use them. Key Words: egg mass, egg density, incubation stage assessment, Greater Flamingo, Phoenicopterus ruber roseus Each year at The Wildfowl and shallowly flooded islands. Single eggs Wetlands Trust (WWT), Slimbridge, UK, are laid on these nest mounds, and up to 60 pairs of colonially breeding cap nest-defence duties are shared by both tive Greater Flamingos Phoenicopterus sexes until a chick is hatched after 26- ruber roseus compete for nest sites. 32 days' incubation. Fighting between Breeding pairs usually construct nest nest mound occupants and their neigh mounds, often up to 0. -
Ostrich Production Systems Part I: a Review
11111111111,- 1SSN 0254-6019 Ostrich production systems Food and Agriculture Organization of 111160mmi the United Natiorp str. ro ucti s ct1rns Part A review by Dr M.M. ,,hanawany International Consultant Part II Case studies by Dr John Dingle FAO Visiting Scientist Food and , Agriculture Organization of the ' United , Nations Ot,i1 The designations employed and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. M-21 ISBN 92-5-104300-0 Reproduction of this publication for educational or other non-commercial purposes is authorized without any prior written permission from the copyright holders provided the source is fully acknowledged. Reproduction of this publication for resale or other commercial purposes is prohibited without written permission of the copyright holders. Applications for such permission, with a statement of the purpose and extent of the reproduction, should be addressed to the Director, Information Division, Food and Agriculture Organization of the United Nations, Viale dells Terme di Caracalla, 00100 Rome, Italy. C) FAO 1999 Contents PART I - PRODUCTION SYSTEMS INTRODUCTION Chapter 1 ORIGIN AND EVOLUTION OF THE OSTRICH 5 Classification of the ostrich in the animal kingdom 5 Geographical distribution of ratites 8 Ostrich subspecies 10 The North -
Pip Pip Cheerio! a Baby Chick Is Hatching Ever Wonder How a Baby Bird Gets out of Its Egg? It Has Got to Require Some Hard Work for Such a Tiny Little Animal
Pip Pip Cheerio! A Baby Chick is Hatching Ever wonder how a baby bird gets out of its egg? It has got to require some hard work for such a tiny little animal. Luckily, chicks are equipped with a handy dandy tool built into their beaks called an egg tooth. An egg tooth grows at the very tip of the beak. They are very small and sharp enough to help break through the shell of the egg. This is called pipping. Learn what it’s like to pip through an eggshell with this fun art activity. You will need: ● Two pieces of paper, any color will work, but white is the easiest to decorate! ● Markers, crayons, or colored pencils ● Scissors ● Glue (a glue stick will work well!) or double sided tape ● Optional: tweezers, spoon, fork, or other tools. Instructions: Step 1: Draw out an egg shape on the paper Step 2: Cut out two egg shaped pieces of paper about the same size *Helpful note: you can make them the same size by putting the two pieces of paper together and cutting them out at the same time Step 3: Decorate one side of the egg to make your chick! Get creative with your decorations but centering your chick’s face will give you the best results. The other piece will be the eggshell, which you can also decorate! *Helpful note: You will be ripping this paper later, so keep the decorations to the outside edges. Step 4: Take your chick paper and glue all around its edge; if you are using double-sided tape, tape around the edges. -
EM083E.Pdf (1.018Mb)
Poultry Leader Guide EM083E Level 3 4-H Poultry Leader Notebook Level III Poultry Dating Game ................................................................................3 Reproduction and Fertilization of Poultry ................................................7 Proper Handling of Hatching Eggs .........................................................15 Embryonic Mortality ...............................................................................19 General Hatchery Management Practices ...............................................21 The Chicks Are Here ...............................................................................27 Basic Nutritional Needs of Poultry .........................................................33 Controlling Body Weight of Replacement Birds ....................................37 The Comforts of Home ...........................................................................41 Light Sensitivity in Chickens .................................................................45 Managing a Small Laying Flock .............................................................51 Culling the Layer Flock ..........................................................................59 Adaptations for Flight .............................................................................63 Flight Prevention .....................................................................................67 Eggs: Normal and Irregular ....................................................................71 Marketing Eggs and Poultry Products -
Life Cycle of a Bird Bob White Quail Bob White Quail Are Birds That Were Once Commonly Seen in Texas
Life Cycle of a Bird Bob White Quail Bob White Quail are birds that were once commonly seen in Texas. The population of these quail has steadily been declining over the last several decades—since the 1960’s. Bob White Quail are one of four types of quail found in Texas. They get their name for the sound they make—it sounds like they are saying “Bob White” when they whistle. Quail are considered an indicator species. Their presence means the ecosystem is healthy and thriving. Most people agree that loss of habitat is the main contributor to the quail decline. Now that we are aware of this problem, there are efforts across the state to help restore the population in some areas. Long Acres Ranch is one of those places. Quail are ground birds and hang out in groups called a coveys. They live in areas that mainly open but have sections of bunch grasses to run and hide in. At night, the quail will gather in a circle, with their tail feathers together to sleep. Why do you think they do this? Quail are shaped like pears with small heads and bigger bodies. Even though they can fly short distances, they spend most of their lives on the ground. What is a disadvantage for them being ground birds? Male quail have a white stripe on their face. The female quail are various shades of brown. Why do you think male birds are more attractive than female birds? Adult quail eat mostly forbs but occasionally will find a worm or small bug and that is a treat! Baby quail eat mostly insects. -
Breeding Biology of the White-Rumped Shama on Oahu, Hawaii
Wilson Bull., 106(2), 1994, pp. 3 11-328 BREEDING BIOLOGY OF THE WHITE-RUMPED SHAMA ON OAHU, HAWAII CELESTINO FLORES AGUON’ AND SHEILA CONANT* ABSTRACT.-WC studied the breeding biology of the White-rumped Shama (Copsychus malabaricus) on Oahu, Hawaii, during 1986-1987. This species is sexually dichromatic and sexually dimorphic, with males being larger. It forms monogamous pair bonds that may last two breeding seasons. The breeding season was from March through August, and territories of nesting pairs that were provided nest boxes averaged 0.09 ha in size. Only three- and four-egg clutches were observed, with four eggs being the modal clutch size. The incubation period averaged 13.6 days and the nestling period averaged 12.4 days. Both adults fed young but only the female incubated and brooded. Shamas can raise two broods in one breeding season, and reproductive success for double-brooded pairs was higher (91%) than that for single-brooded pairs (62%). Received 4 Jun. 1993, accepted 15 Sept. 1993. More species of birds have been introduced to Hawaii than to any other place (Long 1981). Caum (1933) reported that 96 bird species had been introduced in Hawaii, and Bryan (1958) reported 94 introduced species. The number of accidental or intentional introductions is now estimated at 178 (Berger 1981). Little is known about the biology of most of these species, and many were introduced without prior knowledge of their ecol- ogy or their potential for impact on Hawaiian ecosystems. The White-rumped Shama (Muscicapidae: Turdinae: Copsychus mal- abaricus), introduced to Kauai in 193 1 by Alexander Isenberger, is native to South Asia, where there are four known subspecies: Copsychus m. -
Artificial Fertilization and Egg Incubation Techniques
View metadata, citation and similar papers at core.ac.uk brought to you by CORE Technical Manual for Artificial Propagation of the Indonesian Catfish, Pangasius djambal provided by Horizon / Pleins textes Editors: Jacques Slembrouck, Oman Komarudin, Maskur, Marc Legendre © IRD-DKP 2003, ISBN: 979-8186-92-3 Chapter V Artificial Fertilization and Egg Incubation Techniques Slembrouck J.(a, e), J. Subagja(b), D. Day(c), Firdausi(d) and M. Legendre(e) (a) IRD (Institut de recherche pour le développement), Wisma Anugraha, Jl. Taman Kemang Selatan No. 32B, 12730 Jakarta, Indonesia. (b) RIFA (Research Institute for Freshwater Aquaculture), Jl. Sempur No. 1, PO. Box 150 Bogor, Indonesia. (c) JFADC (Jambi Freshwater Aquaculture Development Centre), Jl. Jenderal Sudirman No. 16C, The Hok, Jambi Selatan, Jambi, Sumatera, Indonesia. (d) Loka BAT Mandiangin (Lokasi Budidaya Air Tawar Mandiangin), Jl. Tahura Sultan Adam, Mandiangin, Kabupaten Banjar 70661, Kalimantan Selatan, Indonesia. (e) IRD/GAMET (Groupe aquaculture continentale méditerranéenne et tropicale), BP 5095, 34033 Montpellier cedex 1, France. Chapter V The artificial fertilization technique used for P. djambal is the dry method, i.e. the sperm is first spread over and mixed manually with collected ova. To increase the fertilization rate it is recommended to divide collected ova in small batches of 100 – 200 g (100 – 200 mL) in plastic bowls. For fertilization, 5 mL of diluted sperm are poured over one 100-g (100 mL) batch of ova, then mixed delicately with a feather until the sperm is homogenously spread in the ova mass (Plate V.1). Spermatozoa activation is triggered by addition of freshwater. The ratio generally used is 1 volume of freshwater for 1 volume of ova. -
Dinosaur Incubation Periods Directly Determined from Growth-Line Counts in Embryonic Teeth Show Reptilian-Grade Development
Dinosaur incubation periods directly determined from growth-line counts in embryonic teeth show reptilian-grade development Gregory M. Ericksona,1, Darla K. Zelenitskyb, David Ian Kaya, and Mark A. Norellc aDepartment of Biological Science, Florida State University, Tallahassee, FL 32306-4295; bDepartment of Geoscience, University of Calgary, Calgary, AB, Canada T2N 1N4; and cDivision of Paleontology, American Museum of Natural History, New York, NY 10024 Edited by Neil H. Shubin, University of Chicago, Chicago, IL, and approved December 1, 2016 (received for review August 17, 2016) Birds stand out from other egg-laying amniotes by producing anatomical, behavioral and eggshell attributes of birds related to relatively small numbers of large eggs with very short incubation reproduction [e.g., medullary bone (32), brooding (33–36), egg- periods (average 11–85 d). This aspect promotes high survivorship shell with multiple structural layers (37, 38), pigmented eggs (39), by limiting exposure to predation and environmental perturba- asymmetric eggs (19, 40, 41), and monoautochronic egg pro- tion, allows for larger more fit young, and facilitates rapid attain- duction (19, 40)] trace back to their dinosaurian ancestry (42). For ment of adult size. Birds are living dinosaurs; their rapid development such reasons, rapid avian incubation has generally been assumed has been considered to reflect the primitive dinosaurian condition. throughout Dinosauria (43–45). Here, nonavian dinosaurian incubation periods in both small and Incubation period estimates using regressions of typical avian large ornithischian taxa are empirically determined through growth- values relative to egg mass range from 45 to 80 d across the line counts in embryonic teeth.