scholarly journals The Rate of Growth of Single Comb Rhode Island Reds

1921 ◽  
Vol 1 (2) ◽  
pp. 39-43 ◽  
Author(s):  
B.F. KAUPP
Keyword(s):  
Rhode Island ◽  
Rate Of Growth ◽  
Single Comb

scholarly journals Single Comb Rhode Island red poultry /

1909 ◽  
Author(s):  
◽  
T. E. Steele ◽  
◽  
Keyword(s):  
Rhode Island ◽  
Single Comb

scholarly journals A Test of Crossbred Chickens, Single Comb White Leghorns and Rhode Island Reds

1938 ◽  
Vol 17 (3) ◽  
pp. 193-199 ◽  
Author(s):  
Charles W. Knox ◽  
Marlow W. Olsen
Keyword(s):  
Rhode Island ◽  
White Leghorns ◽  
Single Comb

RESPONSE OF WHITE LEGHORN AND RHODE ISLAND RED BREEDER HENS TO DIETARY DEFICIENCIES OF SYNTHETIC VITAMINS. 1. EGG PRODUCTION, HATCHABILITY AND CHICK GROWTH

1979 ◽  
Vol 59 (3) ◽  
pp. 561-567 ◽  
Author(s):  
S. LEESON ◽  
B. S. REINHART ◽  
J. D. SUMMERS
Keyword(s):  
Adverse Effect ◽  
Growth Rate ◽  
Rhode Island ◽  
Soybean Meal ◽  
Egg Production ◽  
Control Diet ◽  
White Leghorn ◽  
Chick Growth ◽  
Breeder Hens ◽  
Single Comb

Thirty-week-old purebred strains of Single Comb White Leghorn (WL) and Rhode Island Red (RIR) breeder hens were offered a control corn-soybean meal diet or the control diet with one of the following vitamins omitted from the supplement: biotin, B12, E, folacin, niacin, pantothenate and riboflavin. For each strain, four randomly distributed cages of four birds were offered each diet. Birds were inseminated weekly with 0.05 ml of pooled White Leghorn (WL) semen. Egg production, fertility and hatchability were recorded. After 15 wk, the vitamins omitted were added to the diets, and observations continued for a further 5 wk. With the exception of biotin, each unsupplemented diet had an adverse effect on egg production of RIR (P < 0.05), although few significant effects were observed with WL. Diet had no effect on fertility. Lack of added riboflavin had the most effect on hatchability, with 0% being recorded for both strains after 13 wk of treatment. All other treatments depressed hatchability for RIR (P < 0.05), although the pattern was not as well defined with W.L. Both breeds responded to re introduction of vitamins, such that at the end of the trial no significant (P > 0.05) differences in production or hatchability were recorded. There was no difference in growth rate of chicks hatched from eggs produced during the 8th wk of treatment.

SEXUAL DIMORPHISM IN SINGLE COMB RHODE ISLAND RED DOWN COLOR

1936 ◽  
Vol 27 (8) ◽  
pp. 319-322 ◽  
Author(s):  
T. C. BYERLY ◽  
J. P. QUINN
Keyword(s):  
Sexual Dimorphism ◽  
Rhode Island ◽  
Single Comb

Breeding

1933 ◽  
Vol 6 (1-2) ◽  
pp. 51-74
Keyword(s):  
Rhode Island ◽  
Hybrid Vigor ◽  
Red Cross ◽  
List Type ◽  
White Leghorn ◽  
Pure Strain ◽  
Wing Feather ◽  
White Leghorns ◽  
Growth Method ◽  
Single Comb

Crossbred Poultry. Hybrid Vigor. D. C. Warren, Agricultural Experimental Station, Manhattan, Kansas. Bulletin, 252.Summary:1.Crosses between the Single Comb White Leghorn and Jersey Black Giant showed the resulting hybrids to be superior to the two pure breeds in all measurements of vigor.2.The results from the Single Comb White Leghorn-Single Comb Rhode Island Red cross showed the hybrids to be generally superior to the pure breeds, but in a few comparisons the hybrids only equalled the better of the two breeds involved.3.The crosses of Single Comb White Leghorns by Barred Plymouth Rocks and of Single Comb Rhode Island Reds by Barred Plymouth Rocks produced hybrids that in each case were superior to the pure breeds involved, for chick mortality and rate of growth, these being the only criteria of vigor considered.4.Crosses between independently bred strains of Single Comb White Leghorns produced offspring that were in some respects superior to the pure strain progeny, but the degree of stimulation did not appear to be so great as in the crosses of different breeds.5.Sex of chicks may be distinguished at hatching by means of sex-linked down colours in crossbred chicks.6.The new method utilising the growth of wing feathers at hatching is slightly less accurate for identifying the sexes, but has certain advantages over the down-colour method.7.The advantages of the wing feather growth method are that it makes available the White Leghorn breed, which is widely popular and well bred for production; it produces a white hybrid; and greatly extends the list of breeds available for crossing to distinguish sex at hatching.8.The superior vigour of some hybrids probably makes them more economical than most pure breeds for the poultryman whose major income is from market poultry and eggs.

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