scholarly journals COMPARISONS OF AD LIBITUM AND RESTRICTED FEEDING OF MICE SELECTED AND UNSELECTED FOR POSTWEANING GAIN. I. GROWTH, FEED CONSUMPTION AND FEED EFFICIENCY

Genetics ◽  
1970 ◽  
Vol 64 (1) ◽  
pp. 41-57
Author(s):  
V M Timon ◽  
E J Eisen
Keyword(s):  
Feed Efficiency ◽  
Feed Consumption ◽  
Restricted Feeding ◽  
Ad Libitum

scholarly journals Effects of different restricted feeding strategies on performance of growing and finishing dairy bulls offered grass silage and barley based diets

2017 ◽  
Vol 26 (2) ◽  
Author(s):  
Katariina Manni ◽  
Marketta Rinne ◽  
Erkki Joki-Tokola ◽  
Arto Huuskonen
Keyword(s):  
Feed Efficiency ◽  
Dry Matter ◽  
Compensatory Growth ◽  
Live Weight ◽  
Dry Matter Intake ◽  
Feeding Strategies ◽  
Restricted Feeding ◽  
Grass Silage ◽  
Ad Libitum ◽  
Dairy Bulls

The objective of this study was to determine the effects of restricted feeding strategies on performance of growing and finishing dairy bulls. The feeding experiment comprised in total 32 Finnish Ayrshire bulls with an initial mean live weight (LW) of 122 kg and age of 114 days. Feeding treatments were silage ad libitum and daily barley allowance of 93 g kg-1 LW0.60 (A); restricted feeding (R) at 0.80 × A; increasing feeding (I) similar to R until LW of 430 kg and thereafter similar to A; and decreasing feeding (D) similar to A until LW of 430 kg and thereafter similar to R. Restricted feeding strategies decreased daily dry matter intake and LW gain and increased the time to reach the target carcass weight (300 kg). Bulls on I exhibited compensatory growth. There were no significant differences in feed efficiency between the treatments. The present experiment indicates that silage intake ad libitum and supplemented with concentrate resulted in most effective beef production.

scholarly journals Time-Restricted Feeding in Commercial Layer Chickens Improves Egg Quality in Old Age and Points to Lack of Adipostat Activity in Chickens

2021 ◽  
Vol 12 ◽  
Author(s):  
Ganesan Saibaba ◽  
Mark Ruzal ◽  
Dima Shinder ◽  
Sara Yosefi ◽  
Shelly Druyan ◽  
...  
Keyword(s):  
Feed Intake ◽  
Visceral Fat ◽  
Egg Production ◽  
Egg Quality ◽  
Feed Consumption ◽  
Control Group ◽  
Restricted Feeding ◽  
Fat Accumulation ◽  
Visceral Fat Accumulation ◽  
Ad Libitum

In mammals, time-restricted feeding (TRF) with no caloric restriction provides health benefits and extends longevity, usually with a minor (∼3%) or no reduction in total food consumption. In the current study, a TRF regimen of 6 h free access to food (08:00–14:00 h) was applied to Leghorn chickens from 25 to 86 weeks of age; control birds ate freely during the light hours (06:00–20:00 h). Unexpectedly, the TRF-treated birds consumed, on average, 11.7% less food than the controls. This was manifested by an average reduction of 9.6% in body weight, 2.6-fold in visceral fat accumulation, and 6.5% in egg weight. Hen-housed egg production was reduced by 3.6% in the TRF group compared with the control, along the first 40 weeks of the follow-up (P < 0.05), and changed into a tendency of 0.7% higher egg production thereafter. Several parameters of egg quality showed significant improvement (P < 0.05) in the TRF group compared with the controls. A comparison of diurnal patterns of feed consumption revealed a higher rate of hourly consumption in the TRF group and increased consumption before dark in the control group. In conclusion, the reduced feed intake in response to the TRF treatment and loss in visceral fat accumulation supports the lack of a strong adipostat activity in chickens and different appetite regulation mechanisms compared with mammals. Therefore, future TRF studies in chickens should be adjusted by extending the ad libitum time window. The lower feed intake by the TRF-treated chickens compared with the ad libitum-fed controls seems to reduce the efficiency of egg production. Nevertheless, the improved egg quality and persistence of egg lay at the older age suggest that similarly to mammals, the TRF treatment delayed at least some of the negative impacts associated with advanced age.

scholarly journals Utilization of sesame meal as protein source in broiler diets

2021 ◽  
Vol 35 (1) ◽  
pp. 18-24
Author(s):  
E. I. Ikani ◽  
S. W. Oyibo ◽  
A. O. Aduku
Keyword(s):  
Adverse Effect ◽  
Growth Performance ◽  
Feed Efficiency ◽  
Growth Parameters ◽  
Sesamum Indicum ◽  
Feed Consumption ◽  
Feeding Trial ◽  
Sesame Meal ◽  
Ad Libitum ◽  
Better Than

A broiler feeding trial was conducted to determine the optimum replacement value of sesame (Sesamum indicum L.) meal for soyabean in maize-soyabean diets. A total of 252 day-old Anak 80 strain broiler-type chicks were used. Three replicate groups of 14 birds each were randomly allotted on six treatment diets containing 0, 10, 15, 20, 30 and 40% of sesame meal in the diets. Feed and water were provided ad libitum. Results showed that broiler birds fed up to 15% level of sesame meal in diets performed significantly (P<0.05) better than those fed on control diets for all the parameters studied. Feed consumption and feed efficiency values were also significantly lower for birds fed 15% sesame meal diets compared to those on control. However, sesame meal al 30 and 40 percent in diets significantly (P<0.05) depressed growth performance of broiler birds. It was found from this study that, up to 15% sesame meal could be used in maize-soyabean broiler diet without adverse effect on growth parameters.

scholarly journals PENGARUH TINGKAT PEMBATASAN PEMBERIAN PAKAN (Restricted Feeding) TERHADAP PERFORMAN AYAM BROILER JANTAN

2017 ◽  
Vol 14 (1) ◽  
pp. 43
Author(s):  
Hatifah Aprilia Kusuma ◽  
Ashry Mukhtar ◽  
Ratih Dewanti
Keyword(s):  
Body Weight ◽  
Feed Efficiency ◽  
Broiler Chickens ◽  
Body Weight Gain ◽  
Feed Consumption ◽  
Restricted Feeding ◽  
Feed Conversion ◽  
Feed Cost ◽  
Randomized Design ◽  
Body Weights

<p><em>This study aims to determine the effect of restricted feeding </em><em>rate on</em><em> the broiler chickens performance. The research was carried out in Tompe, Jirapan Village, Masaran Sub District, Sragen Distric for six weeks beginning from September 14<sup>th</sup> until October 26<sup>th</sup>, 2011. This study used 100 male broiler chickens New Lohmann strain. The </em><em>research design</em><em> used Complet</em><em>ely</em><em> Randomized Design (CRD) </em><em>one way trafic </em><em>with four treatments. The fourth treatment</em><em>s</em><em> are</em><em>:</em><em> P0 (full  feeding without fasting), P1 (6 days full </em><em>feeding </em><em>and 1 day fasting), P2 (5 days full feeding and 1 day fasting) and P3 (4 days full feed</em><em>ing </em><em>and 1 day fasting). Each treatment </em><em>consisted of</em><em> five replicates. Feed consisted of BR1 and BR2. </em><em>The Parameters o</em><em>bservedare Body Weights</em><em> Gain</em><em>, Feed Consumption, Feed Conversion,and Income Over Feed Cost. The results showed that the average of four treatment are P0, P1, P2 and P3 respectively for body weight gain </em><em>are</em><em> 81</em><em>.</em><em>37; 74</em><em>.</em><em>47; 72</em><em>.</em><em>65, and 72</em><em>.</em><em>50 grams / head / day, feed intake </em><em>are </em><em>137</em><em>.</em><em>94; 126</em><em>.</em><em>46; 124</em><em>.</em><em>06</em><em>;</em><em> and 119</em><em>.</em><em>11 g / head / day, feed conversion </em><em>are</em><em> 1.70</em><em>;</em><em> 1.70</em><em>;</em><em> 1.71, and 1.64, feed efficiency </em><em>are</em><em> 0.59; 0, 59; 0.59, and 0,61. The average of Income Over Feed Cost </em><em>are </em><em>Rp. 8.757,26; Rp. 8.014,98;Rp. 7.818,14</em><em>; </em><em>and Rp. 7.808,57. The analysis of variance</em><em> results</em><em> for body weight </em><em>gain and whole consumption</em><em> has significant effect (P&lt;0.01), conversionwas not </em><em>affected</em><em>. From these results it can be concluded that the rate of feeding restri</em><em>cteds is</em><em> significantly affect</em><em> on</em><em> body weight </em><em>gain and feed consumption</em><em> of Broiler </em><em>Males</em><em>. </em></p>

scholarly journals Respon Produksi Telur Puyuh (Coturnix Coturnix Japonica) dengan Pembatasan Pakan secara Kualitatif dan Kuantitatif pada Saat Pertumbuhan

2019 ◽  
Vol 19 (2) ◽  
Author(s):  
Rosa Tri Hertamawati ◽  
Edhy Sudjarwo ◽  
Osfar Sjofjan ◽  
Suyadi Suyadi
Keyword(s):  
Sexual Maturity ◽  
Egg Production ◽  
Feed Consumption ◽  
Restricted Feeding ◽  
Feed Conversion ◽  
Coturnix Coturnix ◽  
Randomized Design ◽  
Early Production ◽  
Ad Libitum ◽  
And Performance

Production responses of laying quails fed with restricted feeding during rearing were measured in four trials. The research was an experimental observation applying Nested Complete Randomized Design. An experiment using 300 fourteen days old quails. The quails maintained under two feeding restriction programs feeding allotted to 2 dietary regimes, qualitative restricted feeding are Metabolize Energy (ME) R1= 2900 kcal/kg; R2 = 2800 kcal/kg and quantitative restricted feeding; P0 = 100% of ad libitum; P1 = 90% of ad libitum and P2 = 80% of ad libitum (n= 300). Each group (n= 50) has five replicates containing 10 birds each. Restricted feeding treatment is done for fourteen days old quail until its sexual maturity. After its sexual maturity, the feeding is given in ad libitum. Observation is conducted for the feed energy and protein consumption, and performance of egg production. The results of experiment indicate that the restricted feeding consequently significant influenced (P<0.01) on the protein and energy feed consumption. Restricted feeding until 90% ad libitum showed similar egg production with ad libitum treatment and decrease in feed conversion at the early production. Metabolize energy of ration does not have a significant effect to egg production with the result that a feed restriction of 90% ad libitum and EM feed of 2900 Kcal / kg can be applied during the starter period.

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.

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