Journal of the American Association of Instructors and Investigators of Poultry Husbandry最新文献

A real treat is in store for us at the Annual Convention at Guelph. The dates are July 1st, 2nd, 3rd and 4th. The following program speaks for itself. Come prepared to stay throughout the entire session of the Convention.

Tuesday, July 1st.

MORNING SESSION.

9. A. M., Address of Welcome— Dr. G. C. Creelman.

Response.

Business Session.

Roll Call.

Reading Minutes.

Secretary and Treasurer's Report.

Reports Standing Committees.

Resolutions.

Presentation of Amendments.

Appointment of Convention Committees.

AFTERNOON SESSION.

1:30 P. M., Culling School.

EVENING SESSION.

7:00–8:00, Inspection of Laying and Breeding Pens ..........O. A. C.

8:00, Culling.

“Problems in Culling Corn Belt Hens” ..C. W. Carrick, Lafayette, Ind. “What Happened in Pennsylvania in a Contest of 33 Pens of Culled Hens”H. C. Knandel, Poultry Ext., Pa.

“Egg Type” ..........Dr. O. B. Kent, Cornell University, Ithaca, N. Y.

Wednesday, July 2nd.

MORNING SESSION.

8:30 A. M., Culling School.

AFTERNOON …

Part I.

On many farms, eggs are hatched in February in order to get pullets for early fall egg production. On other farms they are hatched in April and May in order to avoid a fall moult in pullets.

From the records kept for three years of Leghorn pullets at Purdue University the indications are that the month of hatch is not necessarily the limiting factor for fall moult of pullets.

Beginning October 1, 1916 for the first year and continuing every two weeks until all the pullets had finished their moult, observations were made of fifty-four pullets. Thirty-three, or 61 per cent went through a partial or complete moult. Twenty-seven of the thrty-three were March hatched. The balance, or six, were April hatched. Considering the twenty-one birds which did not moult, thirteen were March hatched and eight April hatched. On the basis of the total, fifty-four birds, 67½ per …

Breeding for increased egg production in poultry has been successful in its aim, without however, establishing the laws of its inheritance. It is impossible to devise a set of instructions that could be followed by a poultryman of ordinary intelligence, and which would enable him to proceed step by step in the development of a race of high producers, with the same certainty that a set of instructions could be devised for the production of a race of birds with certain definite morphological characters, such as pea comb, barred plumage color, pigmented skin, silky, frizzled feathers, red earlobes, and grey iris. All that can be done with egg production is to tell a poultryman to use the progeny test, which is good as far as it goes, but does not go far enough. It is perfectly clear that number of eggs alone is not a sufficient basis for procedure. Just …

The conclusions which are presented in this paper are based on the trap nest records of the non-standard Rhode Island Reds that have been trap-nested at the Massachusetts Agricultural Station since 1913. With the exception of a comparatively few matings made for non-broodiness or intense broodiness, matings have been made at random in respect to broodiness.

Two catagories of birds can be recognized, viz., broody and non-broody. Of course, there are various degrees of broodiness when present, but for several reasons, I shall not attempt to consider the degrees of broodiness, but will confine the discussion to the two catagories specified.

Broodiness is the normal condition of the wild bird. Without it, the race could not survive, constituted as it is in other respects. Judging by analogy with other characters there must be a definite genetic complex for its occurrence. If we disregard the heterozygous condition, all birds that show …

In the early part of September, 1921, there will assemble at The Hague, Holland, the First World's Poultry Congress, on the invitation of the Netherlands Government. Arrangements had previously been made for the holding of this Congress in 1916. Owing, however, to the outbreak of the European War it had necessarily to be postponed. With a renewal of the invitation from the Dutch Government the project is now going forward.

An Executive Committee has been formed, consisting of representatives nominated by the Dutch Minister of Agriculture and the International Association of Poultry Instructors and Investigators, the latter society having been responsible for the steps leading to this invitation. A meeting of this Committee was held recently at The Hague, under the presidency of Dr. J. H. Louvink, Food Controller to the Netherlands Government, at which there was a full attendance. Proposals were considered as to the arrangements, Programme, etc. Dr….

In studies on the etiology of typhoid-like diseases in birds covering a number of years, and reported in detail in another place, 2the present writer has come upon three bacterial species which differ in important respects from the causative agent of fowl typhoid (B. gallinarum Klein), from the causative agent of fowl cholera (B. avisepticus) and from all other at present recognized bacterial types. It is the aim of the present note briefly to introduce these three new species.

1. Bacterium jeffersonii N. Sp.

This organism was isolated by the writer in 1909 from an extensive epidemic occurring among poultry in a southern Massachusetts town. During the progress of the epidemic about four thousand birds died on a single plant, causing the owner a total loss of about ten thousand dollars in stock and trade. The clinical features of the disease, as well as the post-mortem findings suggested fowl cohlera, …

Purdue University has reported to this Association from time to time the results of its farm poultry demonstrations. Briefly stated, these demonstrations have consisted in the securing of poultry flock records monthly from a number of general purpose Indiana farms; in quarterly visits to these farms by an extension poultryman to advise in their poultry work; and in the holding of neighborhood meetings on these farms that such farms might be real demonstrations for the community.

This work, began in 1915, has been most successful and is still being carried on. Experience, however, has brought out several possible objections to this project, perhaps the chief criticism being that notenough people or communities are reached. Also, as the records from these farms have been sent direct from the farms to the Purdue Poultry Department, the county agents have felt no great responsibility for the success of such work.

Methods of extension …

In January 1918 the writer took up the experimental work on the preservation of eggs begun by T. B. Charles of the Cornell University Poultry Department in 1916 and continued by an undergraduate F. A. Weeks during 1917. The object of this experimental work was to try out a number of different methods of preservation and discover, if possible, a practical method of treating cold storage eggs to improve their quality. Eggs have, therefore, been treated a number of different ways and some of them kept under cellar conditions and some in cold storage. Among the methods of treatment tried so far are, dipping in hot water for six seconds, immersing in boiling water for six seconds, coating with vaseline, coating with paraffin and with a mixture consisting of five parts vaseline to two parts paraffin. No very startling results have been secured thus far but there are a few …

The feeding experiments with laying hens on the use of high vegetable protein feeds and the feed cost of eggs with various rations which the Animal Husbandry Division has been conducting at its experimental farm near Washington, D. C., since 1912 were continued during the war period. Cotton seed meal has given the best results of the high vegetable protein feeds and is one of the best sources of vegetable protein where bone meal and meat scrap are added to the mash. Experiments covering two years with cotton seed meal gave very low egg yields (an average of only 33 eggs per hen) and a high cost of eggs where the mash was composed of 1/3 cotton seed meal and contained no meat scrap. A considerable per cent of the eggs produced, on this ration high in cotton seed meal, had discolored yolks with green or greenish-brown spots, making them …

The following tests were run with Single Comb White Leghorn chicks from hatching to eight weeks of age. They were hatched in an electrobator and brooded in an international oil burning hover.

FEED MIXTURES

The following mixtures were used in these experiments, the proportions being given by weight:

MIXTURE 1

MIXTURE 2

MIXTURE 3

MIXTURE 4

The experiment was divided into eight periods of seven days each.

The feed intake for the eight periods was as follows:

TABLE NO. I