The Field Guide to Cattle

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I think 9-tos with an interest in animals would like this as well as adults; t I had no idea there were so many kinds of cow, or that cows could be so interesting. I think 9-tos with an interest in animals would like this as well as adults; there's plenty to go around.

How to Identify and Appreciate America’s 52 Breeds

I've added the author's A Field Guide to Pigs to my to-read list, in hopes that it will be as good as this one was. Apr 03, Roberta rated it really liked it Shelves: If you take identifying cows more seriously, Know Your Cows is a small handbook that will fit in your glove compartment and has good color photographs. Jan 04, Cathy rated it really liked it. This is a very fun book. I especially like the camouflage activity in the back This book, while humorous and campy does have some real "meat" yes pun intended in it.

The brief descriptions are informative to those of us who like to look at cows but have no clue about any of the differences. Jan 15, Emily rated it really liked it.

A must have for anyone traveling outside of cities! Jul 21, Elizabeth rated it really liked it. Bought this on vacation years ago for fun. Describes the 52 breeds of cattle in a format that assists in their identification. Mo rated it really liked it May 31, Don Cappy rated it liked it Oct 10, Herda rated it it was amazing Sep 24, Monica rated it really liked it Apr 02, Yarbs rated it really liked it May 04, Melinda rated it it was amazing Oct 10, David Handley rated it really liked it Jan 14, Denise rated it it was amazing Sep 09, CateskiNC rated it it was amazing Nov 13, Britta Kramberg rated it it was ok Oct 24, Murrin Brads rated it it was amazing Dec 20, Meatonomics David Robinson Simon.

Once Upon a Flock Lauren Scheuer.

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  • Chicken Health Handbook, the Gail Damerow. Diseases of the Goat, 4E John G. Back cover copy Illustrated with vibrant color photographs, this essential field guide provides descriptions of the cattle breeds found in the United States and Canada, from the ubiquitous Holstein to the rare and beautiful Milking Devon. Convenient and easy-to-use, this book is packed with information about behavior, characteristics, breeding, and history.

    Learn practical tips for interacting with cows and bulls, the difference between dairy wedge, beef block, and draft shoulders, and much more. There is even a glossary of bovine terms and a list of breed associations. Whether you keep one family dairy cow or farm 50 head of beef cattle, this book is for you! The method is attractive, as in itself it is not polluting, 2 and very selective. The sterile males will actively search for females belonging to the same species, also in sites where insecticide application is impossible, and this makes the method extremely alluring indeed.

    A Field Guide to Cows

    However, there are serious complications:. The project was carried out from to Although an earlier successful eradication scheme in Burkina Faso, using traps followed by the release of large numbers of sterile males, succeeded in clearing over 3 km 2 of two species of riverine tsetse G. With the advent of artificial bait devices such as traps and insecticide impregnated screens, as well as the application of small quantities of persistent powerful mostly synthetic pyrethroid insecticides on the animals which is far less polluting than their application on the vegetation , continued tsetse suppression has come within reach of local communities.

    However, such measures have to be sustainable and the village population has to remain motivated and understand that this type of control will go on and on. Eventually, the farming landscape may become unfriendly to tsetse survival depending on the species but this may take many years.

    The present tendency is indeed towards control of tsetse flies, that is to say a continuous effort to keep the size of the populations down to a level where the trypanosomosis problem is tolerable, instead of large-scale eradication schemes. Control has to be sustainable. This word is very much in fashion these days and needs perhaps an explanation.

    Sustainable control measures are those that are durable, that can be sustained over time. Sustainability may apply to financial aspects, for example, are funds for continuing the measures over the foreseeable future assured? Think of donor fatigue, of foreign exchange and budget problems of national governments, of the cost-effectiveness of the measures. Measures such as repeated large-scale insecticide application to the environment are not ecologically sustainable. The term sustainability can also apply to control measures against trypanosomosis itself. For instance, once resistance to a particular trypanocidal drug becomes generalized, then the use of this drug is no longer sustainable.

    If the cost of preventing the disease by the use of a drug exceeds the financial benefit that the owner derives from it, or if the foreign exchange situation of the country is such that continuous importation of the drug cannot be secured, then such drug use is no longer sustainable. The control of the vectors of trypanosomes which are not transmitted by tsetse flies is even more difficult than that of tsetse flies. As we shall see, strains of two species of African trypanosomes have succeeded in adapting themselves to so-called mechanical transmission by various biting flies; there is no biological cycle in these flies, no multiplication, and the fly just acts as a needle: This happens particularly when the first infected animal disrupts feeding of the fly by swishing its tail or some other movement, and it then continues feeding on the second host.

    The most important of these mechanical vectors are the tabanids horse flies, etc. Eradication of these flies, which are often occur in large numbers, is for the foreseeable future out of the question; control methods are generally not very effective.

    A Field Guide to Cows by John Pukite |

    Trypanosomes of African origin which have dissociated themselves from tsetse flies will be discussed in a separate chapter in this publication. What of the possibility of successful vaccination? This is in spite of many years of intensive research in various universities and research institutes throughout the world, including Africa. The main obstacles preventing vaccine development are the almost unlimited antigenic variation during infection by one single strain of trypanosome and the antigenic strain diversity within each of the several trypanosome species and types.

    Some scientists continue attempts at vaccine development using internal non-variable antigens but a difficulty is that such antigens are out of reach of host antibodies as long as the trypanosome is alive and intact or at immunizing against proteins causing pathogenic effects, instead of against the parasite itself. So far there is no breakthrough. In some parts of Africa, rearing of ancient local breeds of trypanotolerant livestock offers another solution to the problem.

    The Field Guide to Cattle The Field Guide to Cattle
    The Field Guide to Cattle The Field Guide to Cattle
    The Field Guide to Cattle The Field Guide to Cattle
    The Field Guide to Cattle The Field Guide to Cattle
    The Field Guide to Cattle The Field Guide to Cattle
    The Field Guide to Cattle The Field Guide to Cattle
    The Field Guide to Cattle The Field Guide to Cattle
    The Field Guide to Cattle The Field Guide to Cattle
    The Field Guide to Cattle The Field Guide to Cattle

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