scholarly journals Severe Feed Restriction in Pullets During the Early Growing Period: Performance and Relationships Among Age, Body Weight, and Egg Weight at the Onset of Production

1989 ◽  
Vol 68 (7) ◽  
pp. 914-924 ◽  
Author(s):  
S. HURWITZ ◽  
I. PLAVNIK
Keyword(s):  
Body Weight ◽  
Feed Restriction ◽  
Egg Weight ◽  
Growing Period ◽  
Period Performance

The effect of feed restriction on sexual maturity and initial reproductive performance of broiler pullets under different light treatments

1969 ◽  
Vol 9 (39) ◽  
pp. 417 ◽  
Author(s):  
RAE Pym ◽  
R Sledge
Keyword(s):  
Body Weight ◽  
Reproductive Performance ◽  
Sexual Maturity ◽  
Feed Restriction ◽  
Restricted Feeding ◽  
Egg Weight ◽  
Laying Performance ◽  
The Mean ◽  
The Difference ◽  
Lighting Systems

An experiment was conducted to examine the effect of restricted feeding under two lighting systems during the rearing period on the initial laying performance of broiler type pullets. The rearing treatments were imposed at nine weeks of age, removed at 22 weeks and the trial was discontinued at 36 weeks of age. The feeding treatments (restricted versus ad lib.) were arranged factorially with the lighting treatments (decreasing versus increasing). Birds reared on restricted feeding reached sexual maturity 16 days later than full fed birds, ate 17 per cent less feed to 22 weeks and gained seven per cent less in body weight to 24 weeks of age and ten per cent less to 36 weeks. Birds reared under the decreasing lighting regime reached sexual maturity at the same age as those reared under increasing lighting, ate five per cent more feed during the rearing and laying periods and gained five per cent more in body weight to 24 weeks. The mean weight of eggs laid between 24 and 34 weeks of age from pullets subjected concurrently to decreasing lighting and restricted feeding was approximately two grams heavier than that of the other three treatment combinations. Mean egg weight was one gram greater in the restricted than in the full fed group, although the difference was not statistically significant. Laying mortality was lower in the restricted fed group than in the full fed group.

EFFECTS OF EGG WEIGHT ON POSTHATCHING GROWTH RATE OF BROILER CHICKS

1973 ◽  
Vol 53 (4) ◽  
pp. 665-668 ◽  
Author(s):  
E. E. GARDINER
Keyword(s):  
Body Weight ◽  
Group Analysis ◽  
Broiler Chicks ◽  
Weight Group ◽  
Egg Weight ◽  
Growing Period ◽  
Commercial Broiler ◽  
Males And Females ◽  
Hatching Eggs ◽  
Weight Groups

Eggs obtained from a commercial broiler hatching-egg producer were assigned by weight to seven groups and set for hatching. After hatching, equal numbers of male and female chicks were placed in floor pens according to egg weight groups and weighed at day-old and weekly for 8 wk. Three additional groups of chicks consisted of: equal numbers of females from each egg weight group; equal numbers of males from each egg weight group; and equal numbers of males and females from each egg weight group. Analysis of the data indicated that the influence of egg weight on chick weight decreased with time. Significant differences in body weight among groups occurred for all ages for the females, whereas no significant differences occurred for the last two ages for the males. Chicks grown in the mixed egg weight groups did not differ from those grown separately. Even though statistical evidence indicated that egg weight did influence 8-wk body weight of females, factors such as cost of producing hatching eggs, price of day-old chicks, hatchability of eggs, length of growing period, and availability of hatching eggs, would have to be taken into consideration before deciding whether or not smaller eggs could be used profitably in the industry.

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.

The influence of body weight at point-of-lay on the production responses of restricted-reared pullets

1984 ◽  
Vol 35 (6) ◽  
pp. 845 ◽  
Author(s):  
D Balnave
Keyword(s):  
Body Weight ◽  
Food Intake ◽  
Sexual Maturity ◽  
Egg Production ◽  
Egg Mass ◽  
Egg Weight ◽  
Growing Period ◽  
Factors Influencing ◽  
Major Factors ◽  
Time Restriction

The food intake, age at sexual maturity, egg weight and daily egg mass output of pullets fed on a time restriction basis during growth were significantly influenced by body weight at 21 weeks of age. Egg production was not affected significantly when 21-week body weight varied between 1.3 and 1.8 kg. It is suggested that one of the major factors influencing the performance of a pullet flock during lay is the number of birds of abnormally low body weight present at the end of the growing period.

257 Including Sweet Bran in the Diet of Growing Feedlot Steers Increased Body Weight and Influenced Rate of Feed Disappearance

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 126-126
Author(s):  
Katie J Heiderscheit ◽  
Aubree M Beenken ◽  
Erin L Deters ◽  
Katherine Hochmuth ◽  
Trey D Jackson ◽  
...  
Keyword(s):  
Body Weight ◽  
Feed Efficiency ◽  
Repeated Measures ◽  
Feeding Rate ◽  
Experimental Unit ◽  
Distiller's Grains ◽  
Growing Period ◽  
Feedlot Steers ◽  
Body Weights ◽  
Period Performance

Abstract This study assessed the effect of Sweet BranTM (SWBR; 40% DM inclusion; Cargill Corn Milling, Blair, NE) or modified distiller’s grains (MDGS; 25% DM inclusion) in the diet of newly received feedlot steers on feeding behavior and growing period performance. Diets were formulated for similar metabolizable protein and DM. Two hundred sixteen freshly weaned Angus-cross steers (253 kg ± 18.1) were stratified by BW to 36 pens (n = 18 per treatment; 6 steers/pen). Individual BW were recorded on d 0, 28, and 60. Eight pens per treatment were utilized to assess rate of feed disappearance early (day 5 and 6) and late (53 and 54) during growing by weighing feed in bunks every 2 hours post-delivery for 12 consecutive hours. Feed weights were averaged across consecutive days within pen and timepoint. Slopes were calculated between each timepoint to determine rate of feed disappearance. Data were analyzed with Proc Mixed of SAS 9.4; diet was fixed effect and pen was experimental unit. Feed disappearance slopes were analyzed as repeated measures with the repeated effect of time. Body weights did not differ on d 28 (P ≥ 0.29), but d 60 BW and d 0 to 60 ADG were greater for SWBR than MDGS (P < 0.05). Steers fed SWBR had greater DMI throughout the trial (P < 0.05). Feed efficiency (G:F) did not differ throughout the trial (P ≥ 0.31). Rate of feed disappearance on d 5/6 was greater for SWBR between hours 6–8, and greater for MDGS from hours 10–12. On d 53/54, SWBR had increased feeding rate during hours 0–2, while MDGS was increased from hours 8–10. Steers fed SWBR had a greater rate of feed disappearance earlier in the day and had improved DMI and growth than steers fed MDGS.

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 PERFORMANCE OF QUAILS (Coturnix-coturnix japonica) GIVEN DRINK CONTAINING MORINGA LEAF SOLUTION IN THEIR GROWING PERIOD

2019 ◽  
Vol 4 (2) ◽  
pp. 75
Author(s):  
Fatkur Rohman ◽  
Ristika Handarini ◽  
Hanafi Nur
Keyword(s):  
Drinking Water ◽  
Body Weight ◽  
Egg Production ◽  
Body Weight Gain ◽  
Coturnix Japonica ◽  
Feed Conversion ◽  
Coturnix Coturnix ◽  
Growing Period ◽  
Randomized Design ◽  
Completely Randomized Design

Moringa leaves contain phytochemicals which can be used to improve the performance of quails in their growing period.  This study was aimed at assessing the effects of the inclusion of moringa leaf solution in drinking water on the performance of quails.  The study was conducted at Badrupuyuh Farm, Sukajaya Village RT 01/02, Ciomas, Bogor Regency from October to December 2017.  One-hundred quail birds aged 7 days with average initial body weight of 17.87±0.46 g were used.  The birds were fed starter and grower commercial rations.  Moringa leaf solution was given through drinking water.  A completely randomized design with 4 treatments and 5 replicates was used.   Treatments consisted of drinking water containing no moringa leaf solution (R0), drinking water containing 5% moringa leaf solution (R1), drinking water containing 10% moringa leaf solution (R2), drinking water containing 15% moringa leaf solution (R3).  Data were subjected to an analysis of variance and a Duncan test.  Measurements were taken on feed intake, body weight gain (BWG), feed conversion, and mortality rate.  Results showed that there were significant effects (P<0.05) of treatments on BWG in week 2 and 4 and feed conversion in week 2.  No mortality of quails was found.  It was concluded that the inclusion of 10% moringa leaf solution in drinking water could increase BWG in week 2 and 4, improve feed conversion, and maintain the life of quails.  It was recommended that further studies on the effects of moringa leaf solution inclusion in drinking water on egg production in laying period.  Key words: performance, quail, moringa leaf solution

scholarly journals Short communication: Melatonin implantation during the non-growing period of cashmere increases the cashmere yield of female Inner Mongolian cashmere goats by increasing fiber length and density

2018 ◽  
Vol 16 (1) ◽  
pp. e06SC01 ◽  
Author(s):  
Ziyuan Wu ◽  
Chunhui Duan ◽  
Yan Li ◽  
Tao Duan ◽  
Fang Mo ◽  
...  
Keyword(s):  
Body Weight ◽  
Treatment Group ◽  
Fiber Length ◽  
Short Communication ◽  
Fiber Diameter ◽  
Contributing Factors ◽  
Initial Body Weight ◽  
Melatonin Treatment ◽  
Growing Period ◽  
Cashmere Goats

This study aimed to evaluate if melatonin implantation at the end of April and June was able to increase cashmere production in female Inner Mongolian cashmere goats and to search for contributing factors accounting for the melatonin increasing in cashmere production. One hundred and fifty female Inner Mongolian cashmere goats (initial body weight 37.2 ± 3.3 kg) were randomly assigned to either a control (n=75) or a treatment (n=75) group. Goats in the treatment group were implanted with melatonin (2 mg/kg of body weight) on April 30 and June 30, 2014 while goats in the control received no treatment. Melatonin implantation increased cashmere yield by 23.4% while increasing the length and density of the cashmere fiber by 19.8% and 11.4%, whereas it decreased cashmere fiber diameter by 4.4%. Melatonin treatment had no effect on doe growth, litter size or birth and weaning weights of kid. Melatonin implantation promoted cashmere yield by increasing fiber length and density without impacting the performance of goats and their offspring. Therefore, melatonin implantation during the cashmere non-growing period (late April and June) is an effective way to increase cashmere yield and improve cashmere characteristics of goats.

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