The Experts below are selected from a list of 2865 Experts worldwide ranked by ideXlab platform
C J Oshea - One of the best experts on this subject based on the ideXlab platform.
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the intake pattern and feed preference of layer Hens selected for high or low feed conversion ratio
PLOS ONE, 2019Co-Authors: C E F Clark, Yeasmin Akter, Alena Hungerford, Peter C Thomson, M R Islam, P J Groves, C J OsheaAbstract:Feed accounts for the greatest proportion of egg production costs and there is substantial variation in feed to egg conversion ratio (FCR) efficiency between individual Hens. Despite this understanding, there is a paucity of information regarding layer Hen Feeding behaviour, diet selection and its impact on feed efficiency. It was hypothesised that variation in feed to egg conversion efficiency between Hens may be influenced by Feeding behaviour. For this experiment, two 35-bird groups of ISA Brown layers were selected from 450 individually caged Hens at 25-30 weeks of age for either low FCR 2.1 ± 0.02 (low feed efficiency (LFE)). For each of these 70 Hens, intake of an ad-libitum mash diet at 2-minute time intervals, 24 h a day, for 7 days was determined alongside behavioural assessment and estimation of the selection of components of the mash. The group selected for HFE had a lower feed intake, similar egg mass and associated lower FCR wHen compared with the LFE group. Whilst feed intake patterns were similar between HFE and LFE Hens, there was a distinct intake pattern for all layer Hens with intake rate increasing from 0300 to 1700 h with a sharp decline to 2200 h. High feed efficiency Hens selected a diet with 25% more ash and 4% less gross energy than LFE Hens. The LFE Hens also spent more time eating with more walking events, but less time spent resting, drinking, preening and cage pecking events as compared with HFE Hens. In summary, there was no contrasting diurnal pattern of feed consumption behaviour between the groups ranked on feed efficiency, however high feed efficiency Hens consumed less feed and selected a diet with greater ash content and lower gross energy as compared with LFE Hens. Our work is now focused on individual Hen diet selection from mash diets with an aim of formulating precision, targeted diets for greater feed efficiency.
Vendl Igor - One of the best experts on this subject based on the ideXlab platform.
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Effect of Hen Feeding and storage temperature on the quality of table eggs
Josip Juraj Strossmayer University of Osijek. Faculty of Agrobiotechical Sciences Osijek. Department of Animal Production and Biotechnology., 2020Co-Authors: Vendl IgorAbstract:Cilj ovog istraživanja bilo je povećanje sadržaja omega-3 masnih kiselina u jajima te utvrđivanje utjecaja hranidbe nesilica na kvalitetu jaja čuvanih u različitim uvjetima skladištenja. Hranidbeni dio pokusa je proveden na ukupno 80 nesilica hibridne linije Tetra SL, koje su bile podijeljene u dva hranidbena tretmana: K= komercijalna krmna smjesa za nesilice i O=krmna smjesa dizajniranog sastava-povećan sadržaj omega-3 masnih kiselina. Analiza kemijskih pokazatelja provedena je kroz tri razdoblja svježa jaja, nakon 7 odnosno 14 dana skladištenja na različitim temperaturama (skladištenje u hladnjaku na temperaturi od +4°C i na sobnoj temperaturi od +22°C). Ukupno je analizirano po skupini 150 jaja (ukupno 300) razreda L (63-73 g). Rezultati istraživanja pokazuju da su nesilice obije ispitivane skupine tijekom pokusnog razdoblja snesle podjednak broj jaja (K=1920 kom. i O=1116 kom.) uz dnevnu konzumaciju hrane od 119,6 g (K) i 118,9g (O). Intenzitet nesivosti bio je visok iznosio je 92-93%. Uočeno je da postoji značajna razlika između K i O skupine u masi jaja i njegovih osnovnih dijelova, ovisno o vremenu mjerenja i temperaturi skladištenja. Ta razlika više je izražena kod jaja skladištenih na sobnoj temperaturi. Fizikalno-kemijski pokazatelji kvalitete jaja skladištenih na temperaturi 4°C i 22°C utvrđeni tijekom tri razdoblja mjerenja (1., 7. i 14. dana) pokazuju da hranidbeni tretman statistički značajno utječe na razlike dobivene kod vrijednosti indeksa oblika (%), pH bjelanjaka te kod pokazatelja kvalitete ljuske (P0,05). Provedeno istraživanje potvrđuje da vrijeme analize i temperatura skladištenja značajno utjeću na unutarnje pokazatelje kvalitete jaja, dok hranidbeni tretman ima znaćajan utjecaj na sadržaj masnih kiselina u žumanjcima jaja ispitivanih pokusnih skupinaThe aim of this study was to increase the content of omega-3 fatty acids in eggs and to determine the effect of laying Hens Feeding on the quality of stored eggs in different storage conditions. Feeding part of experiment was performed on total of 80 laying Hens Tetra SL hybrid line, which was divided into two fed diets: K = commercial feed for laying Hens and O: designed feed, with increased content of omega-3 fatty acids. The analysis of chemical indicators was performed through three periods; fresh eggs, after 7 days or 14 days at storage on different storage temperatures (refrigerated storage +4°C and at room temperature +22°C). In total 150 eggs per groups were analysed (total 300) of class L (63-73 g). The results of the study showed that Hens from both investigation groups during experimental period laid the same number of eggs (K = 1920 pcs. and O = 1116 pcs.) with daily feed consumption of 119,6 g (K) and 118 g (O). The laying intensity was 92-93%. It was observed that there was significant difference between K and O group in egg mass and mass of basic parts of the egg, depending on the measurement time and storage temperature. This difference was more significant with eggs stored at room temperature. Physical-chemical indicators of egg quality stored at 4°C and 22°C temperature was determined during three measurement period (1, 7 and 14 days) and showed that feed treatments have statistically significant influence on index value (%), pH albumen and shell quality (P0,05). The performed study confirms that the time of analysis and storage temperature significantly influence on internal indicators of egg quality, while feed treatment has a significantly influence on fatty acid composition in the egg yolks of experimental groups
C E F Clark - One of the best experts on this subject based on the ideXlab platform.
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the intake pattern and feed preference of layer Hens selected for high or low feed conversion ratio
PLOS ONE, 2019Co-Authors: C E F Clark, Yeasmin Akter, Alena Hungerford, Peter C Thomson, M R Islam, P J Groves, C J OsheaAbstract:Feed accounts for the greatest proportion of egg production costs and there is substantial variation in feed to egg conversion ratio (FCR) efficiency between individual Hens. Despite this understanding, there is a paucity of information regarding layer Hen Feeding behaviour, diet selection and its impact on feed efficiency. It was hypothesised that variation in feed to egg conversion efficiency between Hens may be influenced by Feeding behaviour. For this experiment, two 35-bird groups of ISA Brown layers were selected from 450 individually caged Hens at 25-30 weeks of age for either low FCR 2.1 ± 0.02 (low feed efficiency (LFE)). For each of these 70 Hens, intake of an ad-libitum mash diet at 2-minute time intervals, 24 h a day, for 7 days was determined alongside behavioural assessment and estimation of the selection of components of the mash. The group selected for HFE had a lower feed intake, similar egg mass and associated lower FCR wHen compared with the LFE group. Whilst feed intake patterns were similar between HFE and LFE Hens, there was a distinct intake pattern for all layer Hens with intake rate increasing from 0300 to 1700 h with a sharp decline to 2200 h. High feed efficiency Hens selected a diet with 25% more ash and 4% less gross energy than LFE Hens. The LFE Hens also spent more time eating with more walking events, but less time spent resting, drinking, preening and cage pecking events as compared with HFE Hens. In summary, there was no contrasting diurnal pattern of feed consumption behaviour between the groups ranked on feed efficiency, however high feed efficiency Hens consumed less feed and selected a diet with greater ash content and lower gross energy as compared with LFE Hens. Our work is now focused on individual Hen diet selection from mash diets with an aim of formulating precision, targeted diets for greater feed efficiency.
Yeasmin Akter - One of the best experts on this subject based on the ideXlab platform.
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the intake pattern and feed preference of layer Hens selected for high or low feed conversion ratio
PLOS ONE, 2019Co-Authors: C E F Clark, Yeasmin Akter, Alena Hungerford, Peter C Thomson, M R Islam, P J Groves, C J OsheaAbstract:Feed accounts for the greatest proportion of egg production costs and there is substantial variation in feed to egg conversion ratio (FCR) efficiency between individual Hens. Despite this understanding, there is a paucity of information regarding layer Hen Feeding behaviour, diet selection and its impact on feed efficiency. It was hypothesised that variation in feed to egg conversion efficiency between Hens may be influenced by Feeding behaviour. For this experiment, two 35-bird groups of ISA Brown layers were selected from 450 individually caged Hens at 25-30 weeks of age for either low FCR 2.1 ± 0.02 (low feed efficiency (LFE)). For each of these 70 Hens, intake of an ad-libitum mash diet at 2-minute time intervals, 24 h a day, for 7 days was determined alongside behavioural assessment and estimation of the selection of components of the mash. The group selected for HFE had a lower feed intake, similar egg mass and associated lower FCR wHen compared with the LFE group. Whilst feed intake patterns were similar between HFE and LFE Hens, there was a distinct intake pattern for all layer Hens with intake rate increasing from 0300 to 1700 h with a sharp decline to 2200 h. High feed efficiency Hens selected a diet with 25% more ash and 4% less gross energy than LFE Hens. The LFE Hens also spent more time eating with more walking events, but less time spent resting, drinking, preening and cage pecking events as compared with HFE Hens. In summary, there was no contrasting diurnal pattern of feed consumption behaviour between the groups ranked on feed efficiency, however high feed efficiency Hens consumed less feed and selected a diet with greater ash content and lower gross energy as compared with LFE Hens. Our work is now focused on individual Hen diet selection from mash diets with an aim of formulating precision, targeted diets for greater feed efficiency.
Alena Hungerford - One of the best experts on this subject based on the ideXlab platform.
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the intake pattern and feed preference of layer Hens selected for high or low feed conversion ratio
PLOS ONE, 2019Co-Authors: C E F Clark, Yeasmin Akter, Alena Hungerford, Peter C Thomson, M R Islam, P J Groves, C J OsheaAbstract:Feed accounts for the greatest proportion of egg production costs and there is substantial variation in feed to egg conversion ratio (FCR) efficiency between individual Hens. Despite this understanding, there is a paucity of information regarding layer Hen Feeding behaviour, diet selection and its impact on feed efficiency. It was hypothesised that variation in feed to egg conversion efficiency between Hens may be influenced by Feeding behaviour. For this experiment, two 35-bird groups of ISA Brown layers were selected from 450 individually caged Hens at 25-30 weeks of age for either low FCR 2.1 ± 0.02 (low feed efficiency (LFE)). For each of these 70 Hens, intake of an ad-libitum mash diet at 2-minute time intervals, 24 h a day, for 7 days was determined alongside behavioural assessment and estimation of the selection of components of the mash. The group selected for HFE had a lower feed intake, similar egg mass and associated lower FCR wHen compared with the LFE group. Whilst feed intake patterns were similar between HFE and LFE Hens, there was a distinct intake pattern for all layer Hens with intake rate increasing from 0300 to 1700 h with a sharp decline to 2200 h. High feed efficiency Hens selected a diet with 25% more ash and 4% less gross energy than LFE Hens. The LFE Hens also spent more time eating with more walking events, but less time spent resting, drinking, preening and cage pecking events as compared with HFE Hens. In summary, there was no contrasting diurnal pattern of feed consumption behaviour between the groups ranked on feed efficiency, however high feed efficiency Hens consumed less feed and selected a diet with greater ash content and lower gross energy as compared with LFE Hens. Our work is now focused on individual Hen diet selection from mash diets with an aim of formulating precision, targeted diets for greater feed efficiency.