scholarly journals Genetics of Feed Efficiency in Laying Hens

2014 ◽  
Author(s):  
Anna Wolc ◽  
Jesus Arango ◽  
Petek Settar ◽  
Janet E. Fulton ◽  
Neil P. O'Sullivan ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Laying Hens

The Potency of Bifidobacterium spp. as an Alternative to Antibiotic Growth Promoters on Feed Conversion Ratio, Feed Efficiency, and Nutrient Intake in Laying Hens

2021 ◽  
Vol 56 (2) ◽  
pp. 281-290
Author(s):  
Andreas Berny Yulianto ◽  
Anam Al Arif ◽  
Widya Paramita Lokapirnasari
Keyword(s):  
Feed Efficiency ◽  
Protein Intake ◽  
Crude Protein ◽  
Laying Hens ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Crude Fiber ◽  
Fiber Intake ◽  
Feed Conversion ◽  
Growth Promoters

This article describes a new idea about using Bifidobacteriumsp isolates as an alternative to antibiotic growth promoters, based on the ability of Bifidobacteriumsp isolates, which have the potential as a probiotic in laying hens. This study aims to prove that Bifobacteriumsp could improve production performance, including feed conversion ratio, feed efficiency, and nutrient intake (feed intake, crude protein intake, crude fiber intake, lipid intake, and organic matter). A total of 150 laying hens at 25 weeks of age were divided into three groups (P0: control, P1: 0.1% antibiotic growth promoters, P1: 0.05% Bifidobacterium spp. probiotic) and fed on a basal diet containing 2750 kcal/kg metabolizable energy and 18% crude protein for four weeks. The different supplementation to the basal diets showed significant differences (p<0.05) on feed conversion ratio, feed efficiency, feed intake, crude protein intake, crude fiber intake, lipid intake, and organic matter intake among the treatments. However, feed intake, feed conversion ratio, crude protein intake, crude fiber intake, lipid intake, and organic matter intake were lowest in the group fed with 0.5% of Bifidobacterium spp. The highest feed efficiency was obtained from the groups fed with 0.5% of Bifidobacterium spp, compared with the control and supplemented antibiotics growth promoters group. 0.5% of Bifidobacterium spp. supplementation to the diet of laying hens is beneficial for increasing feed efficiency and improving feed conversion ratio. The practical and theoretical significance of the results is that Bifidobacterium spp. can be used to improve production performance in laying hens.

scholarly journals Prolonged Dark Time Within A 24-h Light Regime Improves Eggshell Quality by Enhancing Calcium Deposition in Laying Hens

2020 ◽  
Author(s):  
Qian Xin ◽  
Jingpeng Zhao ◽  
Hongchao Jiao ◽  
Haifang Li ◽  
Xiaojuan Wang ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Egg Production ◽  
Laying Hens ◽  
Light Regime ◽  
Calcium Deposition ◽  
Eggshell Quality ◽  
Dark Time ◽  
Calbindin D28k ◽  
Calcium And Phosphorus ◽  
Calcium Transporter

Abstract Background: The absorption and transportation of calcium and phosphorus is mainly relied on their corresponding transporters. Eggshell is mainly formed during dark time in one egg cycle. The aim of this study was to determine the effect of different light regime on eggshell quality and the expression of the relevant calcium and phosphorus transporters in laying hens. Seventy two 56-week-old laying hens were randomly divided into two groups and subjected to the following treatments: 16 h light: 8 h dark (control) and 9 h light: 15 h dark (LDP). The expression of phosphorus transporters type IIb Na/Pi co-transporter NaPi-IIa (NPt2a) and NaPi-IIb (NPt2b), calcium transporter calbindin-D28k (CaBP-D28k), and plasma membrane Ca ATPase 1b (PMCA1b) were measured in small intestine, kidney, and eggshell gland. Results: The results showed that the feed intake (P < 0.001) and egg weight (P = 0.05) was decreased by LDP treatment, while laying rate, egg production, and feed efficiency were not significantly influenced (P > 0.05). Compared to control, eggshell hardness was increased (P < 0.05) by LDP treatment whereas eggshell thickness and eggshell percentage were not significant changed. Eggshell calcium (Ca) and phosphorus (P) contents were elevated in LDP-hens, compared to control birds. Compared to control birds, serum Ca (P < 0.01) and P levels (P = 0.079) at dark time were increased in LDP-hens while and alkaline phosphatase (ALP) activity was lowered (P < 0.05). The protein expression levels of CaBP-D28k and PMCA1b were not influenced in duodenum but were decreased at light time in jejunum of LDP hens. In kidney, the expression of CaBP-D28k, PMCA1b and NPt2a were not changed by LDP treatment. In eggshell gland, however, the expression of CaBP-D28k and osteopontin (OPN) were relative higher in LDP hens compared to control birds, whereas the PMCA1b expression was not altered. Conclusions: The result indicates that the increased circulating Ca and P concentrations in dark time are favorable for the deposition of calcium and phosphorus in eggshell. The result offers an alternative strategy for the laying hen with a worse eggshell problem.

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 Productivity and Egg Quality of Two Commercial Layer Hybrids Kept in Free-Range System

2018 ◽  
Vol 6 (10) ◽  
pp. 1444
Author(s):  
Muhittin Tutkun ◽  
Muzaffer Denli ◽  
Ramazan Demirel
Keyword(s):  
Feed Intake ◽  
Feed Efficiency ◽  
Laying Hens ◽  
Egg Quality ◽  
Stocking Density ◽  
Quality Parameters ◽  
Production Performance ◽  
Poultry House ◽  
Free Range

The purpose of this study was to compare the performance and egg quality parameters of two layer hybrids (Lohmann Brown and Atak-S) which were reared in free-range system. The experiment was carried out with a total of 300 laying hens. From 18 to 50 weeks of age Lohmann Brown (LB) and Atak-S (AS) were housed in two groups of 150 hens in a poultry house with a stocking density of 7 hens/m2. The 2 trial groups were formed from 10 repetitions each consisting of 15 hens. At the 20, 30, 40 and 50 weeks of ages, the production performance and egg quality parameters were evaluated. Mean daily feed intake and feed efficiency through the trial were 111.2 g vs 124.3 g, and 2.46 vs 2.58 respectively for LB and AS hybrids (P

scholarly journals Sequential feeding using whole wheat and a separate protein-mineral concentrate improved feed efficiency in laying hens

2010 ◽  
Vol 89 (4) ◽  
pp. 785-796 ◽  
Author(s):  
M. Umar Faruk ◽  
I. Bouvarel ◽  
N. Même ◽  
N. Rideau ◽  
L. Roffidal ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Laying Hens ◽  
Whole Wheat ◽  
Separate Protein

scholarly journals Regions of Genomic Control Identified for Feed Efficiency in Laying Hens under Heat Stress

2018 ◽  
Author(s):  
Kaylee Rowland ◽  
John C.F. Hsieh ◽  
Nathaniel Barrett ◽  
Chris M. Ashwell ◽  
Mike E. Persia ◽  
...  
Keyword(s):  
Heat Stress ◽  
Feed Efficiency ◽  
Laying Hens ◽  
Genomic Control

scholarly journals Potensi Kerabang Telur dalam Pakan Ayam Ras Telur Telur

2021 ◽  
pp. 287-296
Author(s):  
Sumiati Sumiati ◽  
Erwan Erwan ◽  
Dwi Kusuma Purnamasari ◽  
Syamsuhaidi Syamsuhaidi ◽  
Suhartini Suhartini
Keyword(s):  
Feed Efficiency ◽  
Egg Production ◽  
Laying Hens ◽  
Animal Nutrition ◽  
Yellow Corn ◽  
Randomized Design ◽  
Egg Shells ◽  
Completely Randomized Design ◽  
Eggs Quality

The aim of this research is to know potention of the egg shells mill in ration toweard eggs production and Quality of the layer chiken. This research was conducted in August 2020 at Apitaik West Lombok, laboratory of Animal nutrition Animal Husbandri Mataram Univercity and laboratory of BPTP East Nusa Tenggara. 75 of layer chiken devide into 5 treatment was PI (0%  egg shells +50% yellow corn +16% rise bren and 36% KLKS consentrat), P1I (5% eggs shells +50% yellow corn +16% rise bren and 36% KLKS consentrat), P1II (7% eggs shells +50% yellow corn, 36% KLKS consentrat) +16% rise bren), 5 replicetes and each replicates use 5 layer chiken and all of treatment give iso protein and iso energy ration. The parameter in this reaserch was eggs production, feed comsumtion, feed convertion, eggs weight and eggs quality. The result of this research were analysis by varians analysis above completely randomized design (CRD). The result showed that eggs producktion, eggs weight, feed cosumtion and feed convertion non significant effect (P>0.05), but was significant effect (P<0.05) on weight and thick of eggs shell It was concluded that giving egg shells to a level of 7.5% in the feed had enough potential to increase egg production and quality of laying hens with relatively good feed efficiency. 

scholarly journals Potency of probiotics Bifidobacterium spp. and Lactobacillus casei to improve growth performance and business analysis in organic laying hens

2019 ◽  
Vol 12 (6) ◽  
pp. 860-867 ◽  
Author(s):  
Widya Paramita Lokapirnasari ◽  
Teguh Bagus Pribadi ◽  
Anam Al Arif ◽  
Soeharsono Soeharsono ◽  
Sri Hidanah ◽  
...  
Keyword(s):  
Growth Performance ◽  
Feed Efficiency ◽  
Lactobacillus Casei ◽  
Laying Hens ◽  
Feed Conversion ◽  
Growth Promoters ◽  
Egg Weight ◽  
Business Analysis ◽  
Antibiotic Growth Promoters ◽  
Alternative Antibiotic

Aim: This study aimed to determine the use of probiotics Bifidobacterium spp. and Lactobacillus casei as alternative antibiotic growth promoters (AGPs) to improve growth performance and business analysis. Materials and Methods: This study used a completely randomized factorial design. The first factor was the time of administration (1, 2, 3, and 4 weeks) and the second was the use of probiotics (control without probiotics; 0.1% AGP and 0.5% Bifidobacterium spp. + 0.25% L. casei). One hundred and eighty laying hens (Lohmann strain), of 30 weeks old, were divided into 12 treatment groups, composed of five replicates, each consisting of three laying hens. Results: The results showed that using 0.5% Bifidobacterium spp. + 0.25% L. casei in weeks 1 and 2 showed the lowest feed intake (FI) (112.11-112.19 g/day), the highest egg weight (60.28 g) in the 1st week, the lowest feed conversion ratio (FCR) (2.21-2.23), and highest feed efficiency (44.75-45.25%) for 3-4 weeks, and the highest hen-day production (86.66-86.90%) for 3-4 weeks and the most profitable business analysis (IDR. 30,353). Conclusion: Based on the results, it can be concluded that the addition of 0.5% Bifidobacterium spp. + 25% L. casei probiotics can be used as a substitute for AGP; it can reduce the FI and FCR, increasing egg weight, feed efficiency, and hen-day production, as well as illustrating the results of the most profitable business analysis.

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