Relation of diurnal temperature and humidity ranges to egg production and feed efficiency of New Hampshire hens

1959 ◽  
Vol 52 (2) ◽  
pp. 217-222 ◽  
Author(s):  
Robert L. Squibb
Keyword(s):  
Body Weight ◽  
New Hampshire ◽  
Feed Efficiency ◽  
Diurnal Temperature Range ◽  
Egg Production ◽  
Egg Size ◽  
Feed Consumption ◽  
Diurnal Temperature ◽  
Diurnal Range ◽  
Tropical Lowlands

The effect of environment on the production and size of eggs, feed efficiency and mortality of New Hampshire hens in individual cages was studied simultaneously in five areas of Guatemala having temperatures covering a range of 0°–45° C. with variable humidities.While birds housed in the tropical lowlands did show visible signs of thermo-stress, there were no significant differences in egg size, production, feed consumption, mortality and body weight between areas or between groups within areas. The inconsistency of these data with other published reports is explained on the basis of the observed extremely wide diurnal range for temperatures and humidities. An attempt is made to present accepted physiological phenomena in the form of a working hypothesis wherein the diurnal temperature range is related to the fowl's tolerance to thermo-stress.

RESPONSE OF LAYING HENS TO GRADED LEVELS OF DIETARY NUTRAFOS 3 IN A HUMID TROPICAL ENVIRONMENT

2021 ◽  
Vol 15 ◽  
pp. 185-196
Author(s):  
M. MONSI ◽  
A. O. AMAKIRI
Keyword(s):  
Treatment Effect ◽  
Feed Efficiency ◽  
Egg Production ◽  
Egg Size ◽  
Laying Hens ◽  
Gallus Domesticus ◽  
Feed Consumption ◽  
Tropical Conditions ◽  
Overall Performance ◽  
Haugh Unit

Four groups of 48 laying hens (Gallus domesticus), midway in their laying cycle were fed diets containing graded levels (0.00%, 1.5%, 2.5% and 3.5%) of dietary Nutrafos 3 for 56 days. The completely randomized experimental arrangement was designed to evaluate the responses of the caged layers to the inclusive levels of the additive under humid tropical conditions. The dietary additive produced statistically significant (P< 0.01) improvements in the rate of egg production of the hens. Significant increases (P< 0.01) in feed consumption and improvements in feed efficiency (P < 0.01) were also observed. Haugh unit was significantly (P < 0.05) depressed by dietary Nutrafos 3, especially at the highest level of inclusion. There was no treatment effect on egg size as well as some major anatomical characteristics. The best overall performance was achieved at the 3.5% level of dietary inclusion in contrast to the proprietary recommendation of 2.5%.

scholarly journals Performance of meat purpose hybrid chicken under intensive system

2018 ◽  
pp. 187-194
Author(s):  
D. T. Tamang ◽  
M. P. Sharma ◽  
S. R. Barsila
Keyword(s):  
Body Weight ◽  
New Hampshire ◽  
Egg Size ◽  
Body Weight Gain ◽  
Feed Consumption ◽  
Meat Production ◽  
Feed Conversion ◽  
Hybrid Male ◽  
Good Performer ◽  
Intensive System

 A study was carried out at Livestock farm, IAAS, Chitwan, Nepal in 2011 to identify the best compatible genotypes of hybrid male parents with available breeds of female chicken for the meat production. The measureable traits were egg weight, day old chick weight, feed consumption, body weight gain, infertility, hatchability, feed conversion ratio and meat quality. Research results revealed that the Black Australorp were the best performer with respect to egg size (57.50±0.95 g.) compared with other breeds such as Sakini, New Hampshire and Lohmann Brown. The highest body weight of chicks at eight weeks age was observed in the case of F1 progenies of LIR crossed with New Hampshire (1388.33±44.57 g.). On female lines, Sakini (1211.50±48.82 g.) and Black Australorp (1404.50±48.82 g.) were found the best compatible with Cobb 500. On other hand, New Hampshire (1388.33±44.57 g.) and Lohmann Brown (1334.54±46.55 g.) were observed the best compatible with LIR while considering body weight until 8th week of age observed. The Black Australorp hen compared fairly well with comparison to other female lines in terms of growth up to eight weeks of age. Although, the F1 progenies of LIR and Cobb 500 grew faster, on the basis of FCR, the progenies of Giriraja crossed with Black Australorp (2.63) was observed good performer, which indicated that if the feed consumption could be increased, progenies of Giriraja crossed with Black Australorp will be the best compatible breeds for meat production.Journal of the Institute of Agriculture and Animal Science.Vol. 33-34, 2015, Page: 187-194

Evaluation of various molting methods with perspective of post-molting performance in Japanese quails

2017 ◽  
Author(s):  
Shaukat Ali ◽  
Raheela Akhtar ◽  
Muhammad Younus ◽  
Heinrich Neubauer ◽  
Hafez Hafez ◽  
...  
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Feed Efficiency ◽  
Egg Production ◽  
Aluminum Sulfate ◽  
Body Weight Gain ◽  
Feed Consumption ◽  
Feed Restriction ◽  
Japanese Quails ◽  
High Feed

The post-molting performance of 360 female Japanese quails was assessed using five molting methods including feed restriction along with supplementation of dietary levels of aluminum sulfate (AlSO4) and zinc oxide (ZnO) with two concentrations of 0.15% and 0.3%. None of the parameters studied were positively influenced by a single molting method. Body weight gain and feed efficiency were positively affected by higher concentration of ZnO while feed consumption was positively influenced by higher concentration of AlSO4. Similarly high feed efficiency was attributed to higher concentrations of both ZnO and AlSO4. On other hand body weight gain and feed efficiency were negatively influenced by 0.15% ZnO while egg production was worst by 0.15% AlSO4. As each of the molting method had different influence on the tested parameters and none of them could apply individually with perspective of better performance therefore the combinational use of molting methods is recommended according to the focused parameter

THE INFLUENCE OF RESTRICTED FEED INTAKE OF CONFINEMENT-REARED PULLETS ON THEIR PERFORMANCE DURING THE LAYING PERIOD

1962 ◽  
Vol 42 (1) ◽  
pp. 95-101 ◽  
Author(s):  
E. E. Gardiner ◽  
T. M. MacIntyre
Keyword(s):  
Body Weight ◽  
Feed Intake ◽  
Egg Production ◽  
Egg Size ◽  
Experimental Period ◽  
Feed Consumption ◽  
Feed Restriction ◽  
Measurable Effect ◽  
Growing Period ◽  
Restricted Feed Intake

Two experiments were conducted to measure some of the effects of varying the length and the degree of feed restriction of confinement-reared pullets on laying-house performance. In general, increases in the length of time of restriction were followed by an increase in the number of days required to reach 50 per cent production, an increase in the initial egg size (first 8000 eggs), and a decrease in body weight at either 21 or 22 weeks of age. Feed restriction, in most cases, changed the pattern of egg production so that the birds came into production later than full-fed birds but subsequently "peaked" at a higher rate of production and maintained a higher rate of production for the remainder of the experimental period. Restricting the feed intake of the growing pullets resulted in a substantial feed saving during the growing period, but had no measurable effect on feed consumption during the laying period.

scholarly journals The Value of Dried Fish Silage for Pullet and The layer Hen

2021 ◽  
Vol 14 ◽  
pp. 67-76
Author(s):  
A. D. Ologhobo ◽  
A. M. Balogun
Keyword(s):  
Feed Efficiency ◽  
Egg Production ◽  
Egg Size ◽  
Fish Meal ◽  
Metabolizable Energy ◽  
Energy Utilization ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Dried Fish ◽  
Dietary Treatments

Two experiments were conducted with golden Hubbard pullet chicks to investigate the replacement effects of locally prepared fish silage for imported fish meal in pullet and layers' rations. Acidic and neutral fish silage preparations concentrated with either maize or cassava plus groundnut meal and wheat offals, were fed as a substitute for fish meal. Results with pullets showed good feed consumption for all dietary treatments but feed efficiency was decreased (P<0.05) for neutral cassava, acidic maize and acidic cassava fish silage treatments. Pullet mortality was between 0.18 and 4.17%, being significantly (P<0.05) highest in the acidic fish silage diets. Lipid retention, metabolizable energy (ME) and efficiency of energy utilization (ME%) were similar across all treatments except for neutral maize fish silage, in which ME was slightly high and lipid retention low. Egg production and egg size significantly (P<0.05) decreased among groups of birds fed acidic maize acidic cassava and neutral cassava fish silage diets. Similarly, the efficiency of feed conversion to eggs decreased (P<0.05) in all fish silage substituted diets.

scholarly journals TUDIES ON THE DESIGN OF COMPARATIVE POULTR Y TEST S: 1. A COMPARISON OF THREE STRAINS OF WHITE LEGHORNS HOUSED IN REPLICATED FIFTY-BIRD PENS AND INTERMINGLED IN A LARGE PEN

1957 ◽  
Vol 37 (2) ◽  
pp. 168-178 ◽  
Author(s):  
F. G. Proudfoot ◽  
B. F. Cheney ◽  
R. S. Gowe
Keyword(s):  
Body Weight ◽  
Feed Efficiency ◽  
Egg Production ◽  
Strain Differences ◽  
Feed Consumption ◽  
White Leghorn ◽  
Genetic Merit ◽  
Consumption Data ◽  
Group A ◽  
The Cost

An experiment was conducted to estimate the magnitude of the pen effects and to compare the performance of three genetically different S.C. White Leghorn strains in twelve small pens (50-bird size) and a large intermingled group (a pen of 677 birds).There were no significant pen effects for any traits. The repeatability (intra-class correlations) estimates for all traits measured were relatively high: hen-housed egg production,.83; survivor egg production,.77; 160-day body weight,.93; March body weight,.94; laying-house mortality,.47; and feed efficiency,.84.Although strain differences were highly significant, there was no difference in egg production or mortality between the birds in the small pens and in the large intermingled group, and no evidence of any strain × replicate interaction.On the basis of this study, it is concluded that there is no advantage to intermingling strains after housing in order to compare their genetic merit, when an adequate number of uniformly equipped small pens are available and the management of the pens is very similar. There are two main disadvantages to intermingling strains, namely, the loss of feed consumption data, and the cost of trapnesting the birds in the test.

Effects of feed restriction during the laying period on the performance of two strains of mature caged commercial layers in the humid tropics

1981 ◽  
Vol 96 (1) ◽  
pp. 195-203 ◽  
Author(s):  
K. Benyi ◽  
O. Akinokun ◽  
S. H. B. Lebbie
Keyword(s):  
Body Weight ◽  
Feed Efficiency ◽  
Egg Production ◽  
Feed Consumption ◽  
Feed Restriction ◽  
Egg Weight ◽  
Laying Performance ◽  
Treatment Interaction ◽  
Ad Libitum ◽  
Dressing Percentage

SUMMARYTwo strains of commercial layers, 42 weeks old, were fed ad libitum, 85 and 70% of ad libitum for five 28-day periods to study the effects of feed restriction on body weight, carcass characteristics, laying performance and mortality. There were highly significant strain effects on all traits (P < 0·01) except dressing percentage. Period differences were also observed for egg production, egg weight and feed efficiency. In addition, in all cases the relationship between period and these traits was non-linear and was affected by strain or treatment.Feed restriction had significant effects (P < 0·01) on all traits except dressing percentage and mortality. Feed restriction to 70% of ad libitum reduced egg production, egg weight, body weight and feed consumption and improved feed efficiency. However, in most cases there was no difference between ad libitum feeding and 15% feed restriction.Strain × treatment interaction had significant effects on egg production and feed efficiency.

scholarly journals Divergent selection towards body weight and betaine supplementation on quails performance in tropical environment

2021 ◽  
Vol 306 ◽  
pp. 05017
Author(s):  
Adi Ratriyanto ◽  
Nuzul Widyas ◽  
Sigit Prastowo ◽  
Dafa Feron Andrianto
Keyword(s):  
Body Weight ◽  
Feed Efficiency ◽  
Egg Production ◽  
Divergent Selection ◽  
Tropical Environment ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Egg Weight ◽  
Japanese Quails ◽  
Betaine Supplementation

Initial body weight may affect animal performance. This study investigated the effect of divergent selection based on body weight and betaine supplementation on performance of quails in the tropical environment. In total, 900 7-day-old female Japanese quails were divided into 30 cages of 30 birds in a 3×2 factorial design. The first factor was body weight (Random, High, and Low), and the second factor was betaine supplementation (0% and 0.14%), resulting in 6 treatments. Performance data were collected for 2 periods of 28 days during the laying phase. The variables observed included feed consumption, egg production, egg weight, and feed conversion. The data were analyzed using analysis of variance and continued with Duncan’s Test for significant results. The results showed that there was no interaction between body weight and betaine supplementation on quails’ performance. Random body weight produced more eggs and the highest feed efficiency than Low body weight (P<0.05), although the result did not differ from High body weight. Betaine supplementation enhanced egg weight (P<0.05) than the non-supplemented group but did not affect other variables. It is concluded that Random and High weight and betaine supplementation can be applied to optimize the performance of quails in a tropical environment.

scholarly journals High Levels of Free Gossypol in Hen Diets: Effects on Body Weight, Feed Consumption, and Egg Production

1957 ◽  
Vol 36 (6) ◽  
pp. 1351-1354 ◽  
Author(s):  
Ram Narain ◽  
Carl M. Lyman ◽  
J.R. Couch
Keyword(s):  
Body Weight ◽  
Free Gossypol ◽  
Egg Production ◽  
Feed Consumption

Navy beans (Phaseolus vulgaris) as a protein source in layer diets

1971 ◽  
Vol 11 (51) ◽  
pp. 387 ◽  
Author(s):  
JK Connor ◽  
AR Neill ◽  
HW Burton
Keyword(s):  
Body Weight ◽  
Phaseolus Vulgaris ◽  
Egg Production ◽  
Body Weight Gain ◽  
Metabolizable Energy ◽  
Feed Consumption ◽  
Egg Mass ◽  
Navy Bean ◽  
Bean Meal ◽  
Methionine Supplementation

The effects of raw versus steamed navy bean (Phaseolus vulgaris) meal, in diets with and without methionine supplementation, on egg production, egg weight, body weight, pancreas weight, mortality, feed consumption and conversion, and energy and nitrogen utilization were determined with laying hens. As the level of raw navy bean meal in the diet increased, egg mass production and body weight gain decreased. Declines in production were largely overcome by steaming the bean meal. Methionine supplementation of both raw and steamed meal diets had no effect on performance. Changes in dietary metabolizable energy and nitrogen retention are discussed in relation to bird performance.

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