Jose Luis Figueroa-Velasco - Profile on Academia.edu (original) (raw)
Uploads
Papers by Jose Luis Figueroa-Velasco
Synchronization of the estrous during a short period, using a low dose of equine chorionic gonadotropin (eCG) in primiparous and multiparous ewes
Agro productividad, Mar 29, 2023
Objective: To evaluate the reduction effect of the synchronized luteal phase and the eCG applicat... more Objective: To evaluate the reduction effect of the synchronized luteal phase and the eCG application in the reproductive variables and hormone profile response of primiparous and multiparous ewes. Design/Methodology/Approach: The experimental design was completely random, with a 2 × 2 × 2 factorial arrangement. Based on their reproductive activity, the 81 specimens were divided into primiparous (n=38) and multiparous (n=43) ewes. The estrous and pregnancy stages were analyzed using the c2 test. An analysis of variance and the Tukey’s mean comparison test were used to determine the start and the duration of the estrous. P4 concentration was measured using the PROC MIXED which influenced the fixed effects of the treatment and the day, as well as their interaction. Results: There was no difference between treatments, regarding the occurrence of the estrous; however, its start and duration were not impacted by the physiological state and the synchronized luteal phase. P4 concentrations in plasm were higher in primiparous ewes than in multiparous ewes. The main effects did not impact the pregnancy and the prolificity rates. Study Limitations/Implications: The variation in the start and the duration of the estrous was caused by the physiological reproductive state and the duration of the synchronized luteal phase (6 and 12 days). Therefore, these effects should be taken into account when the artificial insemination takes place at a fixed period. Finding/Conclusions: The combination of the cronolone sponges with 100 UI of eCG during short periods (6 days) effectively synchronizes the estrous. P4 concentrations in serum were higher in primiparous ewes, although these concentrations were not a determining factor in the increase of pregnancy and prolificity.
Digestible lysine and threonine in diets for growing pigs
Ecosistemas y recursos agropecuarios, Apr 1, 2016
Adición de un fitogénico poliherbal en dietas de corderos de engorda
Ecosistemas y recursos agropecuarios.(en línea), May 25, 2022
Flaxseed (Linum usitatissimum) in pig diets to modify the lipid composition of meat
Agrociencia (Montecillo), 2017
Dietary supplemented and meat-added antioxidants effect on the lipid oxidative stability of refrigerated and frozen cooked chicken meat
Poultry Science, 2012
The oxidation of fatty acids decreases the quality and shelf-life of meats. To reduce this proces... more The oxidation of fatty acids decreases the quality and shelf-life of meats. To reduce this process, dietary supplemented and meat-added antioxidants were evaluated on the lipid oxidative stability of cooked chicken meat. Broilers were fed 2 levels of vitamin E (10 or 100 mg•kg(-1) of feed; VE-10 and VE-100, respectively) or oregano essential oil (100 mg•kg(-1) of feed; OR-100). Additionally, honey (3%) or butylated hydroxytoluene (0.02%; BHT) were added to chicken meat from the control treatment (VE-10). Breast meat was ground, formed into patties, and cooked on electric grills until it reached an internal temperature of 74°C. Cooked meat was cooled at room temperature, packaged, and stored under refrigeration for 9 d (4°C) or frozen for 45 d (-20°C). The 2-thiobarbituric acid reactive substance test was used to quantify malondialdehyde (MDA) values in the meat. Data were analyzed using a repeated measures design, 5 treatments with 12 replications each, and the least squares means were compared with 4 orthogonal contrasts. The results showed that the meat of the VE-10 treatment had higher values of MDA (P ≤ 0.05) compared with the other antioxidant treatments in all the storage days. There were no differences (P ≥ 0.05) in MDA values between the dietary supplemented and meat-added antioxidant treatments. The meat added with honey had lower MDA values than the one with BHT (P ≤ 0.05). Meat of the VE-100 treatment showed lower MDA values than the one of OR-100 (P ≤ 0.05) in most storage days. In conclusion, supplementation of 10 mg•kg(-1) of vitamin E to the diet resulted in a higher development of lipid oxidation in the meat. Both dietary supplemented or meat-added antioxidants had similar effects on the lipid oxidative stability. The addition of honey maintained longer the lipid oxidative stability of the meat than BHT. Finally, dietary supplementation of vitamin E at the same level of oregano oil, 100 mg•kg(-1), resulted in a higher antioxidant effect on the meat.
Growth performance and plasma urea concentration of growing pigs fed sorghum-soybean meal, low-protein diets
Veterinaria Mexico
... Josué Elí Trujillo-Coutiño,; José Luis Cordero-Mora,; José Luis Figueroa-Velasco,; Lorenzo Re... more ... Josué Elí Trujillo-Coutiño,; José Luis Cordero-Mora,; José Luis Figueroa-Velasco,; Lorenzo Reyna-Santamaría,; Manuel Martínez-Aispuro,; María Teresa Sánchez ... In Experiment 1, the percentage of CP in the treatments was as follows: T1) 16.0, control diet; T2) 14.5; T3) 13.0; and ...
Levels of calcium and available phosphorus in laying hens during 48 weeks
Revista Mexicana De Ciencias Pecuarias, Dec 1, 2013
Performance and nitrogen balance of growing gilts fed low-protein, amino acid -supplemented diets
Five experiments were conducted to investigate the effect of crude protein (CP) concentration and... more Five experiments were conducted to investigate the effect of crude protein (CP) concentration and amino acid (AA) supplementation on growth performance and nitrogen (N) balance of growing gilts. In Experiment 1, a N balance trial, 12 gilts were fed diets with CP contents of 18 or 14% + AA, 16 or 12% + AA, 14 or 10% + AA in an incomplete block design. Low-CP diets were supplemented with lysine, tryptophan, threonine, and methionine at same total amount as their high CP diet counterpart. Experiments 2–5 were growth performance trials using 36 gilts for 35 d each. In Experiment 2, diets contained 16, 15, 14, 13, 12, or 11% CP. In Experiment 3, diets were: 16% CP, 12, 11, 11 + isoleucine, 11 + valine, and 11 + isoleucine + valine. In Experiment 4, diets were: 16% CP, 12, 11, 11 + histidine, 11 + histidine + valine + isoleucine, and 11 + histidine + valine. In Experiment 5, diets were: 16% CP, 12, 11, 11 + valine, 11 + valine + histidine, and 11 + valine + isoleucine. All AA were supplemented to equal total amounts in the control diet. In Experiment 1, reducing CP concentration linearly reduced N retention (P \u3c 0.001). Gilts fed intact protein had higher N retention and apparent digestibility of N (P \u3c 0.001). In growth performance experiments, gilts fed the 11% CP diet had lower growth performance than gilts fed other dietary CP concentration (P \u3c 0.01). Dietary CP concentration affected plasma urea (P \u3c 0.01), plasma concentrations of essential AA, and longissimus muscle area (P \u3c 0.05). Isoleucine or histidine supplementation decreased growth performance (P \u3c 0.01). Valine + isoleucine supplementation increased growth performance to similar levels as gilts fed 12 or 16% CP diets (P \u3e 0.05). Nitrogen balance seemed more sensitive than growth to AA adequacy. These results indicate that valine and isoleucine are the fifth and sixth limiting AA in a corn-soybean meal, AA-supplemented diet for growing gilts. Growing gilts can be fed an 11% CP diet supplemented with lysine, tryptophan, threonine, methionine, valine, and isoleucine
Synchronization of the estrous during a short period, using a low dose of equine chorionic gonadotropin (eCG) in primiparous and multiparous ewes
Agro productividad, Mar 29, 2023
Objective: To evaluate the reduction effect of the synchronized luteal phase and the eCG applicat... more Objective: To evaluate the reduction effect of the synchronized luteal phase and the eCG application in the reproductive variables and hormone profile response of primiparous and multiparous ewes. Design/Methodology/Approach: The experimental design was completely random, with a 2 × 2 × 2 factorial arrangement. Based on their reproductive activity, the 81 specimens were divided into primiparous (n=38) and multiparous (n=43) ewes. The estrous and pregnancy stages were analyzed using the c2 test. An analysis of variance and the Tukey’s mean comparison test were used to determine the start and the duration of the estrous. P4 concentration was measured using the PROC MIXED which influenced the fixed effects of the treatment and the day, as well as their interaction. Results: There was no difference between treatments, regarding the occurrence of the estrous; however, its start and duration were not impacted by the physiological state and the synchronized luteal phase. P4 concentrations in plasm were higher in primiparous ewes than in multiparous ewes. The main effects did not impact the pregnancy and the prolificity rates. Study Limitations/Implications: The variation in the start and the duration of the estrous was caused by the physiological reproductive state and the duration of the synchronized luteal phase (6 and 12 days). Therefore, these effects should be taken into account when the artificial insemination takes place at a fixed period. Finding/Conclusions: The combination of the cronolone sponges with 100 UI of eCG during short periods (6 days) effectively synchronizes the estrous. P4 concentrations in serum were higher in primiparous ewes, although these concentrations were not a determining factor in the increase of pregnancy and prolificity.
Digestible lysine and threonine in diets for growing pigs
Ecosistemas y recursos agropecuarios, Apr 1, 2016
Adición de un fitogénico poliherbal en dietas de corderos de engorda
Ecosistemas y recursos agropecuarios.(en línea), May 25, 2022
Flaxseed (Linum usitatissimum) in pig diets to modify the lipid composition of meat
Agrociencia (Montecillo), 2017
Dietary supplemented and meat-added antioxidants effect on the lipid oxidative stability of refrigerated and frozen cooked chicken meat
Poultry Science, 2012
The oxidation of fatty acids decreases the quality and shelf-life of meats. To reduce this proces... more The oxidation of fatty acids decreases the quality and shelf-life of meats. To reduce this process, dietary supplemented and meat-added antioxidants were evaluated on the lipid oxidative stability of cooked chicken meat. Broilers were fed 2 levels of vitamin E (10 or 100 mg•kg(-1) of feed; VE-10 and VE-100, respectively) or oregano essential oil (100 mg•kg(-1) of feed; OR-100). Additionally, honey (3%) or butylated hydroxytoluene (0.02%; BHT) were added to chicken meat from the control treatment (VE-10). Breast meat was ground, formed into patties, and cooked on electric grills until it reached an internal temperature of 74°C. Cooked meat was cooled at room temperature, packaged, and stored under refrigeration for 9 d (4°C) or frozen for 45 d (-20°C). The 2-thiobarbituric acid reactive substance test was used to quantify malondialdehyde (MDA) values in the meat. Data were analyzed using a repeated measures design, 5 treatments with 12 replications each, and the least squares means were compared with 4 orthogonal contrasts. The results showed that the meat of the VE-10 treatment had higher values of MDA (P ≤ 0.05) compared with the other antioxidant treatments in all the storage days. There were no differences (P ≥ 0.05) in MDA values between the dietary supplemented and meat-added antioxidant treatments. The meat added with honey had lower MDA values than the one with BHT (P ≤ 0.05). Meat of the VE-100 treatment showed lower MDA values than the one of OR-100 (P ≤ 0.05) in most storage days. In conclusion, supplementation of 10 mg•kg(-1) of vitamin E to the diet resulted in a higher development of lipid oxidation in the meat. Both dietary supplemented or meat-added antioxidants had similar effects on the lipid oxidative stability. The addition of honey maintained longer the lipid oxidative stability of the meat than BHT. Finally, dietary supplementation of vitamin E at the same level of oregano oil, 100 mg•kg(-1), resulted in a higher antioxidant effect on the meat.
Growth performance and plasma urea concentration of growing pigs fed sorghum-soybean meal, low-protein diets
Veterinaria Mexico
... Josué Elí Trujillo-Coutiño,; José Luis Cordero-Mora,; José Luis Figueroa-Velasco,; Lorenzo Re... more ... Josué Elí Trujillo-Coutiño,; José Luis Cordero-Mora,; José Luis Figueroa-Velasco,; Lorenzo Reyna-Santamaría,; Manuel Martínez-Aispuro,; María Teresa Sánchez ... In Experiment 1, the percentage of CP in the treatments was as follows: T1) 16.0, control diet; T2) 14.5; T3) 13.0; and ...
Levels of calcium and available phosphorus in laying hens during 48 weeks
Revista Mexicana De Ciencias Pecuarias, Dec 1, 2013
Performance and nitrogen balance of growing gilts fed low-protein, amino acid -supplemented diets
Five experiments were conducted to investigate the effect of crude protein (CP) concentration and... more Five experiments were conducted to investigate the effect of crude protein (CP) concentration and amino acid (AA) supplementation on growth performance and nitrogen (N) balance of growing gilts. In Experiment 1, a N balance trial, 12 gilts were fed diets with CP contents of 18 or 14% + AA, 16 or 12% + AA, 14 or 10% + AA in an incomplete block design. Low-CP diets were supplemented with lysine, tryptophan, threonine, and methionine at same total amount as their high CP diet counterpart. Experiments 2–5 were growth performance trials using 36 gilts for 35 d each. In Experiment 2, diets contained 16, 15, 14, 13, 12, or 11% CP. In Experiment 3, diets were: 16% CP, 12, 11, 11 + isoleucine, 11 + valine, and 11 + isoleucine + valine. In Experiment 4, diets were: 16% CP, 12, 11, 11 + histidine, 11 + histidine + valine + isoleucine, and 11 + histidine + valine. In Experiment 5, diets were: 16% CP, 12, 11, 11 + valine, 11 + valine + histidine, and 11 + valine + isoleucine. All AA were supplemented to equal total amounts in the control diet. In Experiment 1, reducing CP concentration linearly reduced N retention (P \u3c 0.001). Gilts fed intact protein had higher N retention and apparent digestibility of N (P \u3c 0.001). In growth performance experiments, gilts fed the 11% CP diet had lower growth performance than gilts fed other dietary CP concentration (P \u3c 0.01). Dietary CP concentration affected plasma urea (P \u3c 0.01), plasma concentrations of essential AA, and longissimus muscle area (P \u3c 0.05). Isoleucine or histidine supplementation decreased growth performance (P \u3c 0.01). Valine + isoleucine supplementation increased growth performance to similar levels as gilts fed 12 or 16% CP diets (P \u3e 0.05). Nitrogen balance seemed more sensitive than growth to AA adequacy. These results indicate that valine and isoleucine are the fifth and sixth limiting AA in a corn-soybean meal, AA-supplemented diet for growing gilts. Growing gilts can be fed an 11% CP diet supplemented with lysine, tryptophan, threonine, methionine, valine, and isoleucine