The effects of prestorage incubation and length of storage of broiler breeder eggs on hatchability and subsequent growth performance of progeny

A total of 1 200 broiler breeder eggs were collected from a commercial flock at the hen age of 37 weeks and divided into storage treatments of 5 and 15 days. Prior to storage, the eggs were further divided into pre-storage incubation (PRESI) 0 (control), 4 and 8 h treatments. Eggs in the 4 and 8 h PRESI treatment were incubated at a standard dry-bulb temperature of 38.0°C. All eggs were weighed prior to and after storage, then incubated in a commercial setter and hatcher for 21 days. After the incubation, all unhatched eggs were opened to determine fertility, hatchability and embryonic death. The 4 and 8 h PRESI treatment significantly decreased hatchability results of long-term stored eggs compared to non-heated eggs. Hatchability results of eggs stored for 5 days were significantly better compared to eggs stored for 15 days. Subsequent growth performance of progeny was not significantly affected except for the main effect of egg storage on feed conversion. There were significant PRESI × egg storage interactions for apparent fertility, hatchability of total and fertile eggs and embryonic mortality. It was concluded that the PRESI treatment did not have a detrimental effect on the hatchability of broiler breeder eggs stored for 5 days and it might even increase hatchability while it had a detrimental effect on the hatchability of broiler breeder eggs stored for 15 days.  

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Interactions between egg storage duration and broiler breeder age on egg fat content, chicken organ weights, and growth performance

Poultry Science ◽

10.1016/j.psj.2020.06.010 ◽

2020 ◽

Vol 99 (9) ◽

pp. 4607-4615

Author(s):

Hedia Nasri ◽

Henry van den Brand ◽

Taha Najjar ◽

Moncef Bouzouaia

Keyword(s):

Growth Performance ◽

Fat Content ◽

Storage Duration ◽

Broiler Breeder ◽

Organ Weights ◽

Egg Storage

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EFFECTS OF DRINKING WATER MEDICATION ON PERFORMANCE OF STARTING POULTS UNDER ENVIRONMENTAL STRESS

Canadian Journal of Animal Science ◽

10.4141/cjas76-015 ◽

1976 ◽

Vol 56 (1) ◽

pp. 101-103 ◽

Cited By ~ 7

Author(s):

R. E. SALMON ◽

J. B. O’NEIL

Keyword(s):

Drinking Water ◽

Environmental Stress ◽

Growth Performance ◽

Feed Efficiency ◽

Early Growth ◽

Feed Conversion ◽

Subsequent Growth

The drinking water of 1,021 sexed Small White poults fed eight experimental or commercial rations was either unmedicated or medicated for 6 days with chlortetracycline alone or combined with soluble vitamins. Unexpectedly cool weather during the 1st week decreased early growth and feed conversion; mortality to 10 days was increased (11.9% of males and 4.5% of females). The water medication did not influence mortality or improve early or subsequent growth performance or feed efficiency.

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202 Dietary supplementation with a blend of essential oils and a proprietary cobalt source along monensin may be antagonistic to growth performance of Holstein yearling bulls

Journal of Animal Science ◽

10.1093/jas/skaa278.270 ◽

2020 ◽

Vol 98 (Supplement_4) ◽

pp. 148-148

Author(s):

Jianping Wu ◽

Yan Bai ◽

Xia Lang ◽

Cailian Wang ◽

Xiaolei Shi ◽

...

Keyword(s):

Essential Oils ◽

Growth Performance ◽

Dairy Calf ◽

Growth Experiment ◽

Feed Conversion ◽

Calf Growth ◽

Body Weights ◽

Holstein Bulls ◽

Main Factors

Abstract Our previous work has indicated that feeding a blend of essential oils and a proprietary cobalt source (EOC) in combination with monensin (MON) may not be mutually beneficial to dairy calf growth performance. To evaluate this observation further, a 240 d long-term growth experiment was conducted using 12 young growing Holstein bulls using a 2 × 2 factorial treatment arrangement. Main factors were EOC (Rum-A-Fresh, Ralco, Inc., Marshall, MN) and monensin (MON; Norvikon Biotechnology Co., Hunan, China) arranged in 4 treatments: 1) Control: ration fed without EOC or MON; 2) EOC: EOC fed at 26 mg/kg DM; 3) MON: MON fed at 25 mg/kg DM; and 4) EOC+MON: EOC and MON fed in combination. Holstein bulls were 70 d of age and similar in BW (93.3 ± 4.54 kg) and individually fed for 280 d. Body weights, frame measurements, and blood samples were collected monthly. Interactions of EOC by MON were detected for BW, BW gain, ADG, and a trend for feed conversion. Bulls fed EOC or MON demonstrated greater final BW (367.7, 385.2, 381.2, and 357.5 kg for Control, EOC, MON, and EOC+MON, respectively), while BW gains (277.2, 291.5, 284.8, and 265.2 kg) and ADG (1.16, 1.22, 1.19, 1.11 kg/d) were greatest for bulls fed EOC or MON compared with bulls fed EOC+MON, with bulls fed Control being intermediate and similar to bulls fed MON. Intake of DM was greater for bulls fed EOC (6.55, 6.99, 6.60, and 6.42 kg/d) compared with bulls fed remaining treatments. Feeding EOC or MON separately can improve growth performance of growing Holstein bulls. Why the combination of EOC and MON is antagonistic to growth performance of Holstein bulls is unknown.

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Effects of Long-Term Supplementation with Brown Seaweeds and Polyphenols in Rabbit on Meat Quality Parameters

Animals ◽

10.3390/ani10122443 ◽

2020 ◽

Vol 10 (12) ◽

pp. 2443

Author(s):

Raffaella Rossi ◽

Francesco Vizzarri ◽

Sabrina Ratti ◽

Marisa Palazzo ◽

Donato Casamassima ◽

...

Keyword(s):

Growth Performance ◽

Meat Quality ◽

Control Diet ◽

Brown Seaweed ◽

Quality Parameters ◽

Feed Additive ◽

Feed Conversion ◽

Brown Seaweeds ◽

Natural Mixture

The objective of the present study was to evaluate the effects of dam and offspring dietary supplementation with a natural feed additive on the growth performance and meat quality parameters of growing rabbits. The growing rabbits are selected from lactating does receiving a control diet (C) or diets supplemented with 0.3% (SP1) and 0.6% (SP2) of feed additive containing brown seaweeds (Laminaria spp.) and plant extracts. In the postweaning phase, the growing rabbits remained in the treatment group defined by their does and the trial lasted 42 days. The average daily feed intake and feed conversion ratio were improved in the rabbit fed 0.6% of the natural feed additive. The cholesterol content tended to be lower in Longissimus lumborum (LL) muscle and decrease in Semimembranosus (SM) muscle (in SP2 −41.36% than controls). The α tocopherol and retinol content were enhanced in both muscles of rabbit fed the natural mixture (SP1 and SP2 groups). An improvement of sensory attributes of texture was observed in both muscles from rabbit fed natural mixture. In conclusion, long term supplementation of both lactating does and offspring with the high dosage of brown seaweed and plant polyphenols improves growth performance and enhances meat nutritional and sensory parameters.

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Effects of Maternal and Progeny Dietary Vitamin E on Growth Performance and Antioxidant Status of Progeny Chicks before and after Egg Storage

Animals ◽

10.3390/ani11040998 ◽

2021 ◽

Vol 11 (4) ◽

pp. 998

Author(s):

Jun Yang ◽

Keying Zhang ◽

Shiping Bai ◽

Qiufeng Zeng ◽

Jianping Wang ◽

...

Keyword(s):

Body Weight ◽

Vitamin E ◽

Growth Performance ◽

Antioxidant Status ◽

Body Weight Gain ◽

The Body ◽

Dietary Vitamin ◽

Before And After ◽

Egg Storage

Two trials were conducted to investigate the effects of maternal and progeny dietary vitamin E (VE) supplementation on the growth performance and antioxidant status of offspring before and after egg storage. A total of 576 75-week-old Ross 308 breeder hens were assigned to three dietary VE treatments (100, 200, and 400 mg/kg) with 6 replicates of 32 hens for 12 weeks. Two trials were conducted with offspring hatched from eggs laid at weeks 9 and 12 of breeder feeding trial, respectively. Trial 1 was conducted by a 3 × 2 factorial arrangement of treatments with three levels of maternal dietary VE (100, 200, and 400 mg/kg) and two levels of progeny dietary VE (0 and 35 mg/kg). Trial 2 was conducted with three maternal dietary VE treatment (100, 200, and 400 mg/kg), and chicks were hatched from eggs stored for 14 d and received the same progeny diet with no addition of VE. Results showed that in trial 1, maternal (100, 200, and 400 mg/kg) and progeny (0 and 35 mg/kg) dietary VE supplementation did not affect the growth performance of offspring hatched from unstored eggs (p > 0.05). In trial 2, in the case of long-term egg storage, maternal dietary VE supplementation of 200 and 400 mg/kg increased the body weight (BW) of 21- and 42-d-old offspring and the body weight gain (BWG) of offspring from 1 to 21 d (p < 0.05), and decreased the feed conversion ratio (FCR) of offspring from 1 to 21 d (p < 0.05) compared to 100 mg/kg VE. As the maternal dietary VE levels increased, the liver and serum antioxidant status of offspring enhanced (p < 0.05). In conclusion, maternal dietary VE supplementation of 200 or 400 mg/kg could improve the growth performance and anti-oxidant status of offspring hatched from stored eggs, but not for that of offspring hatched from unstored eggs. The suitable VE level for the broiler breeder diet was 400 mg/kg in the case of long-term egg storage.

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Effect of feathering genes on growth performance of F2 backcrosses and comparison of F1 and F2 crosses of Abor Acre broiler breeder x native chickens in humid tropical environment

Nigerian Journal of Animal Production ◽

10.51791/njap.v41i2.770 ◽

2021 ◽

Vol 41 (2) ◽

pp. 19-33

Author(s):

E. N. Nwachukwu ◽

C. C. Ogbu

Keyword(s):

Growth Performance ◽

F1 Hybrids ◽

Feed Conversion ◽

Broiler Breeder ◽

Naked Neck ◽

Native Chicken ◽

Exotic Breed ◽

Native Chickens ◽

Local Chicken ◽

Reciprocal Backcross

This study was conducted to evaluate growth performance, brooding and rearing mortalities of F2 main and reciprocal backcross progenies of Abor Acre broiler breeder x native chicken crosses and to compare their F1 and F2 backcross progenies. The base population used in the study consisted of mature (~ 48 weeks) male and female native chickens and exotic (Abor Acre) broiler breeder parent stock. The native chicken varieties were made up of normal feather, naked neck and frizzle genotypes. These birds were mated to the Abor Acre broiler parent stocks in main and reciprocal fashion generating F1 main and reciprocal crossbreds. Females of these F1 hybrids were then mated back to the broiler breeder cock to generate F2 main and reciprocal backcross progenies that were evaluated in the present study. Data analyzed include body weight (BWT) and linear body parameters (LBPs), average feed intake (AFI), feed conversion ratio (FCR), brooding and rearing mortalities. Comparisons between genetic groups for these parameters were done by means of analysis of variance (ANOVA) technique. Results indicated improved growth performance and feed conversion ratios in the F2 reciprocal backcross groups compared to their F2 main backcross counterparts. The F2 individuals in both crosses were superior to F1 crossbred populations. Chick mortality rates were higher in main and reciprocal backcross groups involving the naked neck genotype compared to other plumage types. It was concluded that backcrossing the F1 individuals to the exotic broiler breeder cocks increased the genetic profile of the backcross lines resulting in enhanced growth performance of progenies. Crossbreeding of exotic and local chicken varieties generated progenies that had higher genetic potentials for growth relative to the local strains and better adaptability relative to the exotic breed. However, incubation and brooding strategies capable of minimizing mortalities at embryonic, brooding and rearing phases should be explored and integrated in local chicken improvement programmes involving the use of these plumage reducing genes for optimal results.

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Effect of Egg Size on Hatchability and Subsequent Growth Performance of Fayoumi Chicken

Journal of Agricultural Science ◽

10.5539/jas.v9n7p116 ◽

2017 ◽

Vol 9 (7) ◽

pp. 116

Author(s):

Ewonetu Kebede Senbeta

Keyword(s):

Weight Gain ◽

Growth Performance ◽

Egg Size ◽

Feed Conversion ◽

Subsequent Growth ◽

Future Work ◽

Brooding Periods ◽

Hatchling Weight ◽

Determine Effect ◽

Range Test

The study was conducted to determine effect of egg-weight on hatchability and subsequent growth performance of Fayoumi breeds. A total of 576 eggs were purposively selected and arranged into three groups of small, medium and large sizes each with 192 eggs. Each egg group was randomly sub-divided into three replicates of 64 eggs in a CRD. Eggs were incubated for 21 days and chicks hatched on the same day were counted and individually weighed. Chicks were intensively raised on deep litter system for eight weeks on same diet, but kept separately according to their initial treatment of eggs. Data was analyzed by GLM of SAS and separated for means by Duncan’s multiple-range test. The study result revealed that egg size had effect on hatchability and strongly influenced all parameters measured during the brooding periods. It has significant effect on day-old weight, body weight, final weight gain, final feed conversion and mortality. Chicken producers may opt for medium-sized eggs principally for the purpose of better hatchability and feed conversion ratio whereas large sized eggs for better hatchling weight, weight gain and survivability. It is also recommended that future work may also address the effect of egg size on the same parameters at grower or pullet stage performance and specific diseases which cause paramount chick mortality should be identified.

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Effect of ghrelin peripheral administration on growth performance, carcass quality, and selected serum parameters in broiler chickens

Journal of the Hellenic Veterinary Medical Society ◽

10.12681/jhvms.22965 ◽

2020 ◽

Vol 71 (1) ◽

pp. 2047

Author(s):

H. AGHDAM SHAHRYAR ◽

A. LOTFI

Keyword(s):

Weight Gain ◽

Growth Performance ◽

Feed Intake ◽

Broiler Chickens ◽

Conversion Ratio ◽

Feed Conversion Ratio ◽

Carcass Quality ◽

Feed Conversion ◽

Short Term

The aim of present study was to investigate the short-term and long-term effect of the peripheral administration of ghrelin on the growth performance (feed intake, weight gain, and feed conversion ratio), carcass quality, and selected serum biochemical (glucose, total cholesterol, triglyceride, and total protein) and hormonal (T3, T4, and corticostrone) indices in broiler chickens. 240 one-day-old broiler chickens were selected, and allocated into three treatment groups (control and two experimental groups). On day-21 of the rearing period, ghrelin was peripherally administrated to three experimental groups. The control group contained birds without any administration of peptide or solution, groups G50 and G100; included birds with Ip-injection of 50 and 100 (ng/100g BW) ghrelin peptide, respectively. The peripheral administration of exogenous ghrelin did not affect feed intake, body weight gain (BWG), feed conversion ratio (FCR) and carcass characteristics in broiler chickens. In short-term samples taken 12h after ghrelin infusion, the glucose level was increased in ghrelin-treated groups (162 and 151 mg/dl in G50 and G100 compared with 117 mg/dl in control; P< 0.01) and there were significant declines for TC, triglyceride, and TP in the ghrelin-treated groups (G50 and G100) compared with the control. In addition, long-term glucose level has a greater value in G50 and G100 (182 and 200.66 mg/dl) compared with control (133.60 mg/dl) group (P< 0.01). A significant decline was also observed for TC and triglyceride content in the ghrelin-treated groups (P<0.05). There was no significant difference among groups for TP in short-term and long-term samples. There was a significant increase for T4 in ghrelin-treated groups (G50 and G100) compared with the control (4.55 and 4.57 ng/ml vs 4.20 ng/ml respectively; P< 0.05) in long-term samples. In conclusion, the peripheral administration of ghrelin in broiler chickens, during the commercial rearing period did not affect the overall growth performance, carcass quality and feed conversion ratio. The infusion of exogenous ghrelin may increase the levels of serum glucose, decrease total cholesterol and triglyceride, and T4 levels are increased in the long-term (and not in the short-term or 12h after administration).

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Effects of feeding Isomaltooligosaccharides on the growth performance, carcass traits and immune response of broiler chickens

JOURNAL OF ADVANCES IN AGRICULTURE ◽

10.24297/jaa.v3i2.4256 ◽

2014 ◽

Vol 3 (1) ◽

pp. 150-157

Author(s):

Khalid M. Gaafar

Keyword(s):

Immune Response ◽

Growth Performance ◽

Broiler Chickens ◽

Carcass Traits ◽

Dietary Supplementation ◽

Control Group ◽

Broiler Chicks ◽

Feed Conversion ◽

Flu Vaccine ◽

Lipids Profile

The research was conducted to study the effect of feeding broiler chickens on diets containing isomaltooligosaccharides on the growth performance, carcass traits and immune response. 90-one day old broiler chicks were used according to completely randomized two treatment groups and one control, 30 birds each. Birds fed ad-libitum on basal starter and grower-finisher diets for 35 day. Diets of treatment`s groups contained 0.5 g/Kg and 1 g/Kg of Isomaltooligosaccharides, while the control group fed on the basal diets without Isomaltooligosaccharides supplementation. Dietary supplementation of broiler chickens with Isomaltooligosaccharides improved body weight, feed conversion, carcass traits, two lymphoid organs weight and log antibody titer against avian flu vaccine. Most of the highest values were for birds fed low levels of Isomaltooligosaccharides. Feed intake decreases as Isomaltooligosaccharides level increases. Dietary supplementation with Isomaltooligosaccharides did not affect the lipids profile (triglycerides, total cholesterol, LDL and HDL), however the blood VLDL levels decreased with increased levels of Malondialdehyde and Glutathione reductase. Collectively, Dietary supplementation of broiler chickens with 0.5 g/Kg diet of Isomaltooligosaccharides improved growth performance, carcass traits and immune status.

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Effects of Different Swimming Pool Conditions and Floor Types on Growth Performance and Footpad Dermatitis in Indoor-Reared White Roman Geese

Animals ◽

10.3390/ani11061705 ◽

2021 ◽

Vol 11 (6) ◽

pp. 1705

Author(s):

Shih-Chieh Liao ◽

Pei-Xuan Lu ◽

Shih-Yi Shen ◽

Chih-Chang Hsiao ◽

Ching-Yi Lien ◽

...

Keyword(s):

Growth Performance ◽

Conversion Ratio ◽

Feed Conversion Ratio ◽

Swimming Pool ◽

Poultry Production ◽

Performance Measurements ◽

Feed Conversion ◽

Plantar Surface ◽

Rearing Conditions ◽

Foot Disease

Footpad dermatitis (FPD) is a major foot disease in modern poultry production, and it affects both poultry health and animal welfare. It refers to inflammation and necrotizing lesions on the plantar surface of the footpads and toes. We investigated the effects of providing a swimming pool and different floor types on growth performance and FPD score in indoor-reared White Roman geese. Forty-eight male and 48 female White Roman geese were randomly allocated to pens with or without a swimming pool and with either mud or perforated plastic floor and reared from 15 to 84 days of age. Growth performance measurements included feed intake (FI), weight gain (WG), and feed conversion ratio (FCR). FI, WG, and FCR were significantly decreased at various growth periods in geese provided with a pool. Lower WG and bodyweight for the perforated plastic floor group were found at 15–28 and 28 days of age, respectively. The geese reared on the perforated plastic floors without a pool had higher FPD scores at 70 and 84 days of age than those with other rearing conditions. A higher incidence of FPD score 1 was observed in geese raised without a pool. In conclusion, providing a pool can improve footpad health in indoor-reared White Roman geese but may not benefit growth performance.

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