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G G Mateos - One of the best experts on this subject based on the ideXlab platform.
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inclusion of fiber in diets for brown egg laying Pullets effects on growth performance and digestive tract traits from hatching to 17 weeks of age
Poultry Science, 2015Co-Authors: P Guzman, M V Kimiaeitalab, B Saldana, J Garcia, G G MateosAbstract:We investigated the effects of fiber inclusion in the diet on growth performance and digestive traits in Pullets from hatching to 17 wk of age. The control diets of the 3 feeding periods (0 to 5 wk, 5 to 10 wk, and 10 to 17 wk) were based on corn and soybean meal and did not include any additional fiber source. The experimental diets included 2 or 4% of cereal straw or sugar beet pulp (SBP) at the expense (wt:wt) of the control diet. From 0 to 5 wk of age, fiber inclusion did not affect Pullet performance. From hatch to 17 wk of age, the inclusion of straw had little effect on Pullet performance but the inclusion of 4% SBP reduced (ADG) (P < 0.05) and reduced feed conversion ratio (FCR; P < 0.001). Pullets fed straw had greater ADG (P < 0.05) and better energy conversion ratio (P < 0.01) than Pullets fed SBP. An increase in fiber from 2 to 4% reduced FCR (P < 0.05). Body weight uniformity was not affected by diet. Fiber inclusion increased the relative weight (% BW) of the gizzard at 5 wk (P = 0.056) and 10 wk (P < 0.01) of age, but no differences were detected between fiber sources. At same ages, the relative length (cm/kg BW) of the Pullets (P = 0.058 and P < 0.01, respectively) and tarsus (P = 0.079 and P < 0.05, respectively) was higher in Pullets fed SBP than in Pullets fed straw. Fiber inclusion, however, did not affect any of these traits at 17 wk of age. In summary, the inclusion of 2% straw at the expense (wt:wt) of the whole diet did not affect Pullet performance at 17 wk of age. An increase in the level of straw from 2 to 4% reduced FCR but did not affect ADG. The inclusion of SBP, however, reduced Pullet growth, with effects being more pronounced at the higher level.
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feed form and energy concentration of the diet affect growth performance and digestive tract traits of brown egg laying Pullets from hatching to 17 weeks of age
Poultry Science, 2015Co-Authors: B Saldana, L Camara, P Guzman, J Garcia, G G MateosAbstract:: The influence of feed form and energy concentration of the diet on growth performance and the development of the gastrointestinal tract (GIT) was studied in brown-egg laying Pullets. Diets formed a 2 x 5 factorial with 2 feed forms (mash vs. crumbles) and 5 levels of energy differing in 50 kcal AMEn/kg. For the entire study (0 to 17 wk of age) feeding crumbles increased ADFI (52.9 vs. 49.7 g; P 0.05) by energy content of the diet. At 5, 10, and 17 wk of age, the relative weight (RW, % BW) of the GIT and the gizzard, and gizzard digesta content were lower (P < 0.05 to P < 0.001) and gizzard pH was higher (P < 0.05 to P < 0.001) in Pullets fed crumbles than in Pullets fed mash. Energy concentration of the diet did not affect any of the GIT variables studied. In summary, feeding crumbles improved Pullet performance and reduced the RW of the GIT and gizzard, and increased gizzard pH at all ages. An increase in the energy content of the diet improved FCR from 0 to 17 wk of age. The use of crumbles and the increase in the AMEn content of the diet might be used adventageously when the objetive is to increase the BW of the Pullets. However, crumbles affected the development and weight of the organs of the GIT, which might have negative effects on feed intake and egg production at the beginning of the egg laying cycle.
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productive performance of brown egg laying Pullets from hatching to 5 weeks of age as affected by fiber inclusion feed form and energy concentration of the diet1
Poultry Science, 2015Co-Authors: P Guzman, H A Mandalawi, A Perezbonilla, B Saldana, R Lazaro, G G MateosAbstract:The effects of fiber inclusion, feed form, and energy concentration of the diet on the growth performance of Pullets from hatching to 5 wk age were studied in 2 experiments. In Experiment 1, there was a control diet based on cereals and soybean meal, and 6 extra diets that included 2 or 4% of cereal straw, sugar beet pulp (SBP), or sunflower hulls (SFHs) at the expense (wt/wt) of the whole control diet. From hatching to 5 wk age fiber inclusion increased (P < 0.05) ADG and ADFI, and improved (P < 0.05) energy efficiency (EnE; kcal AMEn/g ADG), but body weight (BW) uniformity was not affected. Pullets fed SFH tended to have higher ADG than Pullets fed SBP (P = 0.072) with Pullets fed straw being intermediate. The feed conversion ratio (FCR) was better (P < 0.05) with 2% than with 4% fiber inclusion. In Experiment 2, 10 diets were arranged as a 2×5 factorial with 2 feed forms (mash vs. crumbles) and 5 levels of AMEn (2,850, 2,900, 2,950, 3,000, and 3,050 kcal/kg). Pullets fed crumbles were heavier and had better FCR than Pullets fed mash (P < 0.001). An increase in the energy content of the crumble diets reduced ADFI and improved FCR linearly, but no effects were detected with the mash diets (P < 0.01 and P < 0.05 for the interactions). Feeding crumbles tended to improve BW uniformity at 5 wk age (P = 0.077) but no effects were detected with increases in energy concentration of the diet. In summary, the inclusion of moderate amounts of fiber in the diet improves Pullet performance from hatching to 5 wk age. The response of Pullets to increases in energy content of the diet depends on feed form with a decrease in feed intake when fed crumbles but no changes when fed mash. Feeding crumbles might be preferred to feeding mash in Pullets from hatching to 5 wk age.
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influence of body weight at hatching and inclusion of oat hulls in the diet on growth performance and digestive tract traits of brown egg laying Pullets from 0 to 16 wk of age
Poultry Science Association 104th Annual Meeting Abstracts | 2015 PSA Annual Meeting | 27 07 2015-30 07 2015 | Kentucky, 2015Co-Authors: Sara M Rodado, B Saldana, P Guzman, Husham Abdulsattar Dawood, Lourdes Camara Garcia, Raul Rodriguez, G G MateosAbstract:The influence of pre-incubated weight of eggs (EW) laid by 24 wk-old brown layer breeders and the inclusion (wt:wt) of 3% oat hulls (OH) in the diet on growth performance and gastrointestinal tract (GIT) traits were studied in Pullets reared under stressful conditions from hatching to 16 wk of age. The initial BW of the Pullets resulting from these eggs was of 29.9 and 38.2 g for the 2 extreme groups. The stress applied consisted in using a prolonged (8 h) transport time from the hatchery to the experimental facility, reducing barn temperature at night from placement to 7 d of age, and late beak trimming of the Pullets (18 d). Growth performance, Pullet uniformity, and GIT traits were measured by period (0 to 5 wk, 5 to 10 wk, and 10 to 16 wk of age) and cumulatively. Data were analyzed as a completely randomized design with treatments organized as a 7 × 2 factorial, with 7 groups of Pullets that differed on pre-hatched EW (47 to 54 g with 1 g difference between groups) and 2 levels of OH inclusion (0 vs. 3%). Effects of EW on the variables studied were partitioned into linear and quadratic components. The stress conditions applied affected Pullet growth, with BW at 5 wk of age that were as an average 27% lower than recommended by the genetic company (269 g vs. 367 g). Neither initial EW nor OH inclusion affected any of the variables studied. In summary, EW of young breeders did not affect growth performance, BW uniformity, or GIT traits of the resulting Pullets from 0 to 16 wk of age. Eggs bigger than 47 g laid by young breeders can produce high quality Pullets. Pullets fed diets with 3% OH performed equally to Pullets fed the control diet, suggesting that the amount of fiber can be increased during the rearing period of brown egg Pullets
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influence of the main cereal in the diet and particle size of the cereal on productive performance and digestive traits of brown egg laying Pullets
Animal Feed Science and Technology, 2011Co-Authors: Mohamed Frikha, H M Safaa, M P Serrano, E Jimenezmoreno, R Lazaro, G G MateosAbstract:A total of 864 brown-egg laying Pullets was used to study the effects of the main cereal of the diet (500 g maize or wheat/kg) and particle size of the cereal (hammer milled to pass through a 6-, 8-, and 10-mm screen) on growth performance and digestive traits from 1 to 120 d of age. Each of the six treatments was replicated six times (24 Pullets per replicate). Type of cereal did not affect Pullet performance at any age. From 1 to 45 d of age, body weight (BW) gain was increased (P<0.001) and feed conversion ratio was improved (P<0.05) as the particle size of the cereal was reduced, but no effects were observed after this age. At 45 d of age, Pullets fed maize tended (P<0.10) to have a heavier relative weight (RW, g/kg BW) of the total digestive tract and proventriculi and a higher relative length (RL, cm/kg BW) of the small intestines (SI) than Pullets fed wheat. Also at this age, the RW of the digestive tract increased (P<0.05) with increases in the particle size of the cereal. At 120 d of age, dietary treatment did not affect the RW of any of the organs studied or gizzard pH but the RL of the SI was higher (P<0.05) for Pullets fed wheat than for Pullets fed maize. Also, the RL of the SI was reduced (P<0.05) as the particle size of the cereal increased. We conclude that 500 g wheat/kg can be included in Pullet feeds from 1 to 120 d of age, and that particle size of the cereal affects Pullet performance during the first 45 d of life but not thereafter. Therefore, it is recommended to grind the cereal used in this period with a screen size of no more than 8 mm.
Mohamed Frikha - One of the best experts on this subject based on the ideXlab platform.
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influence of the main cereal in the diet and particle size of the cereal on productive performance and digestive traits of brown egg laying Pullets
Animal Feed Science and Technology, 2011Co-Authors: Mohamed Frikha, H M Safaa, M P Serrano, E Jimenezmoreno, R Lazaro, G G MateosAbstract:A total of 864 brown-egg laying Pullets was used to study the effects of the main cereal of the diet (500 g maize or wheat/kg) and particle size of the cereal (hammer milled to pass through a 6-, 8-, and 10-mm screen) on growth performance and digestive traits from 1 to 120 d of age. Each of the six treatments was replicated six times (24 Pullets per replicate). Type of cereal did not affect Pullet performance at any age. From 1 to 45 d of age, body weight (BW) gain was increased (P<0.001) and feed conversion ratio was improved (P<0.05) as the particle size of the cereal was reduced, but no effects were observed after this age. At 45 d of age, Pullets fed maize tended (P<0.10) to have a heavier relative weight (RW, g/kg BW) of the total digestive tract and proventriculi and a higher relative length (RL, cm/kg BW) of the small intestines (SI) than Pullets fed wheat. Also at this age, the RW of the digestive tract increased (P<0.05) with increases in the particle size of the cereal. At 120 d of age, dietary treatment did not affect the RW of any of the organs studied or gizzard pH but the RL of the SI was higher (P<0.05) for Pullets fed wheat than for Pullets fed maize. Also, the RL of the SI was reduced (P<0.05) as the particle size of the cereal increased. We conclude that 500 g wheat/kg can be included in Pullet feeds from 1 to 120 d of age, and that particle size of the cereal affects Pullet performance during the first 45 d of life but not thereafter. Therefore, it is recommended to grind the cereal used in this period with a screen size of no more than 8 mm.
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influence of the main cereal and feed form of the diet on performance and digestive tract traits of brown egg laying Pullets
Poultry Science, 2009Co-Authors: Mohamed Frikha, H M Safaa, M P Serrano, X Arbe, G G MateosAbstract:The influence of the main cereal and feed form of the diet on performance and digestive tract traits was studied in 576 brown-egg laying Pullets from 1 to 120 d of age. From 1 to 45 d of age, 4 diets arranged factorially with 2 cereals (corn vs. wheat) and 2 feed forms (mash vs. pellets) were used. Each treatment was replicated 6 times (24 Pullets per replicate). From 46 to 120 d of age, all diets were offered in mash form and the only difference among diets was the cereal used. Cumulatively, Pullets fed the corn diets had higher BW gain (P < 0.05) but similar feed conversion ratio as Pullets fed the wheat diets. From 1 to 45 d of age, Pullets fed pellets consumed more feed (P < 0.001) and had higher BW gain (P < 0.001) than those fed mash. Most of the beneficial effects of pelleting on productive performance were still evident at 120 d of age. At 45 d of age, gizzard weight (g/kg of BW) was higher (P < 0.01) in Pullets fed corn than in Pullets fed wheat diets. Feeding pellets reduced the relative weight of the digestive tract and the gizzard (P < 0.001) as well as the length (cm/kg of BW) of the small intestine (P < 0.01) at both ages. The pH of gizzard contents at 120 d of age was not affected by cereal but was lower in Pullets that were fed mash from 1 to 45 d of age (P < 0.01). We conclude that wheat can be used in substitution of corn in Pullet diets with only a slight reduction in BW gain and that feeding pellets from 1 to 45 d of age increased BW gain and pH of the gizzard and reduced the relative weight of the gizzard and the length of the gastrointestinal tract at 120 d of age.
H M Safaa - One of the best experts on this subject based on the ideXlab platform.
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influence of the main cereal in the diet and particle size of the cereal on productive performance and digestive traits of brown egg laying Pullets
Animal Feed Science and Technology, 2011Co-Authors: Mohamed Frikha, H M Safaa, M P Serrano, E Jimenezmoreno, R Lazaro, G G MateosAbstract:A total of 864 brown-egg laying Pullets was used to study the effects of the main cereal of the diet (500 g maize or wheat/kg) and particle size of the cereal (hammer milled to pass through a 6-, 8-, and 10-mm screen) on growth performance and digestive traits from 1 to 120 d of age. Each of the six treatments was replicated six times (24 Pullets per replicate). Type of cereal did not affect Pullet performance at any age. From 1 to 45 d of age, body weight (BW) gain was increased (P<0.001) and feed conversion ratio was improved (P<0.05) as the particle size of the cereal was reduced, but no effects were observed after this age. At 45 d of age, Pullets fed maize tended (P<0.10) to have a heavier relative weight (RW, g/kg BW) of the total digestive tract and proventriculi and a higher relative length (RL, cm/kg BW) of the small intestines (SI) than Pullets fed wheat. Also at this age, the RW of the digestive tract increased (P<0.05) with increases in the particle size of the cereal. At 120 d of age, dietary treatment did not affect the RW of any of the organs studied or gizzard pH but the RL of the SI was higher (P<0.05) for Pullets fed wheat than for Pullets fed maize. Also, the RL of the SI was reduced (P<0.05) as the particle size of the cereal increased. We conclude that 500 g wheat/kg can be included in Pullet feeds from 1 to 120 d of age, and that particle size of the cereal affects Pullet performance during the first 45 d of life but not thereafter. Therefore, it is recommended to grind the cereal used in this period with a screen size of no more than 8 mm.
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influence of the main cereal and feed form of the diet on performance and digestive tract traits of brown egg laying Pullets
Poultry Science, 2009Co-Authors: Mohamed Frikha, H M Safaa, M P Serrano, X Arbe, G G MateosAbstract:The influence of the main cereal and feed form of the diet on performance and digestive tract traits was studied in 576 brown-egg laying Pullets from 1 to 120 d of age. From 1 to 45 d of age, 4 diets arranged factorially with 2 cereals (corn vs. wheat) and 2 feed forms (mash vs. pellets) were used. Each treatment was replicated 6 times (24 Pullets per replicate). From 46 to 120 d of age, all diets were offered in mash form and the only difference among diets was the cereal used. Cumulatively, Pullets fed the corn diets had higher BW gain (P < 0.05) but similar feed conversion ratio as Pullets fed the wheat diets. From 1 to 45 d of age, Pullets fed pellets consumed more feed (P < 0.001) and had higher BW gain (P < 0.001) than those fed mash. Most of the beneficial effects of pelleting on productive performance were still evident at 120 d of age. At 45 d of age, gizzard weight (g/kg of BW) was higher (P < 0.01) in Pullets fed corn than in Pullets fed wheat diets. Feeding pellets reduced the relative weight of the digestive tract and the gizzard (P < 0.001) as well as the length (cm/kg of BW) of the small intestine (P < 0.01) at both ages. The pH of gizzard contents at 120 d of age was not affected by cereal but was lower in Pullets that were fed mash from 1 to 45 d of age (P < 0.01). We conclude that wheat can be used in substitution of corn in Pullet diets with only a slight reduction in BW gain and that feeding pellets from 1 to 45 d of age increased BW gain and pH of the gizzard and reduced the relative weight of the gizzard and the length of the gastrointestinal tract at 120 d of age.
M P Serrano - One of the best experts on this subject based on the ideXlab platform.
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influence of the main cereal in the diet and particle size of the cereal on productive performance and digestive traits of brown egg laying Pullets
Animal Feed Science and Technology, 2011Co-Authors: Mohamed Frikha, H M Safaa, M P Serrano, E Jimenezmoreno, R Lazaro, G G MateosAbstract:A total of 864 brown-egg laying Pullets was used to study the effects of the main cereal of the diet (500 g maize or wheat/kg) and particle size of the cereal (hammer milled to pass through a 6-, 8-, and 10-mm screen) on growth performance and digestive traits from 1 to 120 d of age. Each of the six treatments was replicated six times (24 Pullets per replicate). Type of cereal did not affect Pullet performance at any age. From 1 to 45 d of age, body weight (BW) gain was increased (P<0.001) and feed conversion ratio was improved (P<0.05) as the particle size of the cereal was reduced, but no effects were observed after this age. At 45 d of age, Pullets fed maize tended (P<0.10) to have a heavier relative weight (RW, g/kg BW) of the total digestive tract and proventriculi and a higher relative length (RL, cm/kg BW) of the small intestines (SI) than Pullets fed wheat. Also at this age, the RW of the digestive tract increased (P<0.05) with increases in the particle size of the cereal. At 120 d of age, dietary treatment did not affect the RW of any of the organs studied or gizzard pH but the RL of the SI was higher (P<0.05) for Pullets fed wheat than for Pullets fed maize. Also, the RL of the SI was reduced (P<0.05) as the particle size of the cereal increased. We conclude that 500 g wheat/kg can be included in Pullet feeds from 1 to 120 d of age, and that particle size of the cereal affects Pullet performance during the first 45 d of life but not thereafter. Therefore, it is recommended to grind the cereal used in this period with a screen size of no more than 8 mm.
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influence of the main cereal and feed form of the diet on performance and digestive tract traits of brown egg laying Pullets
Poultry Science, 2009Co-Authors: Mohamed Frikha, H M Safaa, M P Serrano, X Arbe, G G MateosAbstract:The influence of the main cereal and feed form of the diet on performance and digestive tract traits was studied in 576 brown-egg laying Pullets from 1 to 120 d of age. From 1 to 45 d of age, 4 diets arranged factorially with 2 cereals (corn vs. wheat) and 2 feed forms (mash vs. pellets) were used. Each treatment was replicated 6 times (24 Pullets per replicate). From 46 to 120 d of age, all diets were offered in mash form and the only difference among diets was the cereal used. Cumulatively, Pullets fed the corn diets had higher BW gain (P < 0.05) but similar feed conversion ratio as Pullets fed the wheat diets. From 1 to 45 d of age, Pullets fed pellets consumed more feed (P < 0.001) and had higher BW gain (P < 0.001) than those fed mash. Most of the beneficial effects of pelleting on productive performance were still evident at 120 d of age. At 45 d of age, gizzard weight (g/kg of BW) was higher (P < 0.01) in Pullets fed corn than in Pullets fed wheat diets. Feeding pellets reduced the relative weight of the digestive tract and the gizzard (P < 0.001) as well as the length (cm/kg of BW) of the small intestine (P < 0.01) at both ages. The pH of gizzard contents at 120 d of age was not affected by cereal but was lower in Pullets that were fed mash from 1 to 45 d of age (P < 0.01). We conclude that wheat can be used in substitution of corn in Pullet diets with only a slight reduction in BW gain and that feeding pellets from 1 to 45 d of age increased BW gain and pH of the gizzard and reduced the relative weight of the gizzard and the length of the gastrointestinal tract at 120 d of age.
R Lazaro - One of the best experts on this subject based on the ideXlab platform.
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productive performance of brown egg laying Pullets from hatching to 5 weeks of age as affected by fiber inclusion feed form and energy concentration of the diet1
Poultry Science, 2015Co-Authors: P Guzman, H A Mandalawi, A Perezbonilla, B Saldana, R Lazaro, G G MateosAbstract:The effects of fiber inclusion, feed form, and energy concentration of the diet on the growth performance of Pullets from hatching to 5 wk age were studied in 2 experiments. In Experiment 1, there was a control diet based on cereals and soybean meal, and 6 extra diets that included 2 or 4% of cereal straw, sugar beet pulp (SBP), or sunflower hulls (SFHs) at the expense (wt/wt) of the whole control diet. From hatching to 5 wk age fiber inclusion increased (P < 0.05) ADG and ADFI, and improved (P < 0.05) energy efficiency (EnE; kcal AMEn/g ADG), but body weight (BW) uniformity was not affected. Pullets fed SFH tended to have higher ADG than Pullets fed SBP (P = 0.072) with Pullets fed straw being intermediate. The feed conversion ratio (FCR) was better (P < 0.05) with 2% than with 4% fiber inclusion. In Experiment 2, 10 diets were arranged as a 2×5 factorial with 2 feed forms (mash vs. crumbles) and 5 levels of AMEn (2,850, 2,900, 2,950, 3,000, and 3,050 kcal/kg). Pullets fed crumbles were heavier and had better FCR than Pullets fed mash (P < 0.001). An increase in the energy content of the crumble diets reduced ADFI and improved FCR linearly, but no effects were detected with the mash diets (P < 0.01 and P < 0.05 for the interactions). Feeding crumbles tended to improve BW uniformity at 5 wk age (P = 0.077) but no effects were detected with increases in energy concentration of the diet. In summary, the inclusion of moderate amounts of fiber in the diet improves Pullet performance from hatching to 5 wk age. The response of Pullets to increases in energy content of the diet depends on feed form with a decrease in feed intake when fed crumbles but no changes when fed mash. Feeding crumbles might be preferred to feeding mash in Pullets from hatching to 5 wk age.
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influence of the main cereal in the diet and particle size of the cereal on productive performance and digestive traits of brown egg laying Pullets
Animal Feed Science and Technology, 2011Co-Authors: Mohamed Frikha, H M Safaa, M P Serrano, E Jimenezmoreno, R Lazaro, G G MateosAbstract:A total of 864 brown-egg laying Pullets was used to study the effects of the main cereal of the diet (500 g maize or wheat/kg) and particle size of the cereal (hammer milled to pass through a 6-, 8-, and 10-mm screen) on growth performance and digestive traits from 1 to 120 d of age. Each of the six treatments was replicated six times (24 Pullets per replicate). Type of cereal did not affect Pullet performance at any age. From 1 to 45 d of age, body weight (BW) gain was increased (P<0.001) and feed conversion ratio was improved (P<0.05) as the particle size of the cereal was reduced, but no effects were observed after this age. At 45 d of age, Pullets fed maize tended (P<0.10) to have a heavier relative weight (RW, g/kg BW) of the total digestive tract and proventriculi and a higher relative length (RL, cm/kg BW) of the small intestines (SI) than Pullets fed wheat. Also at this age, the RW of the digestive tract increased (P<0.05) with increases in the particle size of the cereal. At 120 d of age, dietary treatment did not affect the RW of any of the organs studied or gizzard pH but the RL of the SI was higher (P<0.05) for Pullets fed wheat than for Pullets fed maize. Also, the RL of the SI was reduced (P<0.05) as the particle size of the cereal increased. We conclude that 500 g wheat/kg can be included in Pullet feeds from 1 to 120 d of age, and that particle size of the cereal affects Pullet performance during the first 45 d of life but not thereafter. Therefore, it is recommended to grind the cereal used in this period with a screen size of no more than 8 mm.
