Ciencias Agropecuarias
Permanent URI for this communityhttp://repositorio.uta.edu.ec/handle/123456789/870
Browse
5 results
Search Results
Item Evaluación del aceite de palma y premezcla gluconeogénica sobre el comportamiento productivo en cerdas primíparas(2024-08) Almeida Enríquez, Catherine Belén; Guerrero López, Jorge RicardoThe aim of this study was to evaluate the effects of palm oil and a gluconeogenic premix on the productive performance of primiparous sows. The research took place on the premises of the pig producer "Martita" located in the parish of Checa, canton Quito, and province of Pichincha. The study included 10 nulliparous Landrace x Yorkshire crossbred sows with an average weight of 80 kg +/- 10 kg in which two treatments were tested: T0 = 0% energy replacement (kcal) provided by palm oil, with a gluconeogenic premix and T1 = 100% energy replacement (kcal) provided by palm oil, with a gluconeogenic premix. For each treatment, five repetitions were used per treatment, integrating one sow per repetition. In the comparison of means, the T Student statistical test was used with a confidence level of 95%. The variables analyzed in this study included backfat thickness, feed intake during gestation and lactation, weight gain, piglet weight at birth and weaning, litter size, pre-weaning mortality, weaning-oestrus interval, pregnancy rate and partial costs. The results reported that replacing 100% of the energy provided by palm oil with a gluconeogenic premix significantly impacted cumulative feed intake especially during the last weeks of gestation and at the beginning of the lactation stage. However, it did not significantly affect the average daily feed intake in the two stages. Similarly, T1 considerably reduced backfat thickness during these periods. On the other hand, significant differences were observed in the weight of piglets from sows fed with the gluconeogenic premix, during birth and weaning, being these higher compared to the control group. In addition, the pre-weaning mortality rate was significantly lower in the T1 group. Finally, in the cost analysis, although the total cost was slightly higher for the T1 group due to the higher intake, it should be stressed that the improved results, such as piglet weight and reduced pre-weaning mortality, indicate that the benefits could justify the additional expense.Item Adaptación de tres híbridos de tomate hortícola (Lycopersicum esculentum) bajo cubierta plástica(2023-09) Tubón Tite, Wendy Lizbeth; Curay Quispe, Segundo EuclidesThe research focuses on the behavior of three horticultural tomato hybrids (Lycopersicum esculentum) under plastic cover. A completely randomized block experimental design (DBCA) was used with 3 treatments and a commercial control and 4 repetitions. Several variables were evaluated, such as survival percentage, plant height, stem diameter, number of days to flowering, number of days to fruiting, number of days to harvest, number of fruits, distance between clusters, equatorial diameter. , polar diameter and fruit weight. For the statistical analysis of the data, the SPSS Statistics program was used and tests such as Scheffe were applied with a significance of 0.05; Homogeneity of variances with a confidence level of 95%. Showing that the three horticultural tomato hybrids successfully adapted under plastic cover in the Huachi Grande parish, Ambato canton, Tungurahua province. Where it was observed that the H1-Arsin Hybrid showed outstanding results in the variables studied during the investigation, as the third best in survival with 94.28%, greater stem diameter at 75 days with 1.41 cm, fewer days of flowering with 42.55 days, fewer days of fruiting with 57.70 days, greater polar diameter with 6.26 cm and higher yield (20,100 kg/ha), the shape of the fruit was round, which indicates a favorable fruit production in this variety and adapted to the environmental conditions of the Huachi Grande parish, which makes it the most promising option in the study.Item Evaluación del comportamiento agronómico de cuatro líneas promisorias de avena bajo las condiciones agroecológicas de Querochaca(2023-03) Moposita Taipe, Alexandra Magay; Dobronski Arcos, Jorge EnriqueOats (Avena sativa) is a very important crop worldwide, in Ecuador this crop has come to have a good adaptation thanks to the geographical characteristics that it presents, the present investigation had the purpose of evaluating the agroecological behavior of 4 promising lines of oats in the sector Querochaca in order to determine which variety of oats has the best agroecological adaptation in the study place, in the Querochaca sector, 4 promising lines of oats and a control were cultivated, which was designed an essay with 3 repetitions for each of the variables, The variables that were taken into account were: Days to spike, plant height, type of straw, spike size, number of grains per spike, yield, hectoliter or specific weight, weight of a thousand grains, type and color of grain, diseases. For the results, they were analyzed using tables and graphs obtained by the INFOSTAT software. The appearance of the panicle in line AS-17- 002 was 109 days for which it was determined with a late promising line. Finally, it was possible to determine that the AS-17-000 lines have a higher yield and a better adaptation to the agroecological conditions of the area.Item Evaluación del comportamiento agronómico de cuatro líneas promisorias de cebada bajo las condiciones agroecológicas del sector Querochaca(2023-03) Naranjo Freire, Diego Alejandro; Dobronski Arcos, Jorge EnriqueThe present research work evaluated the agronomic behavior of four promising lines of barley, under the agro ecological conditions of the sector of Querochaca, the promising lines and the improved variety were provided by the INIAP cereals program, a completely random block design was employed with 5 treatments with 3 repetitions, in the research we studied variables such as days of tasseling, plant height, spike size, thatch type, number of grains per spike, yield, thousand grain weight, hectolithic or specific weight, type and color of grain and diseases, for each variable was used the test of Shapiro Wilks, homogeneity, ADEVA and Tukey to 5%, already finished the investigation the promising lines have been adapted to the agro ecological conditions of the field Querochaca in Cevallos canton, province of Tungurahua. Promising lines were obtained that stood out much more than others, the promising line CD-19-004 was the line that was better adapted to agro ecological conditions, presenting 85.33 days to the stem, plant height 125 cm, an intermediate stem, a medium grain, round shape, white color and good appearance, there was presence of diseases yellow leaf rust (Puccinia striiformis) with a severity of 38.8%, leaf rust (Puccinia hordei) present a severity of 6.67% and yellow dwarfism barley virus (BYDV) present traces of yellowing of the tip of few leaves, vigorous looking plant, CD-19-004 was the best promising line compared to the remaining three lines (CD-19-013, CMU-19-002, CMU-19-001) and surpassing the improved variety INIAP-CAÑICAPA 2003.Item Efecto de la Acacia melanoxylon en diferentes niveles más enzimas fibrolíticas sobre el comportamiento productivo y digestibilidad en ovinos(2022-09) Abarca Cabrera, Alex Enrique; Aragadvay Yungán, Ramón GonzaloThe objective of the present investigation was to evaluate the effect of Acacia melanoxylon plus fibrolytic enzymes on the productive behavior and digestibility in sheep. This research was carried out at the Faculty of Agricultural Sciences - UTA. 18 weaned sheep with an average weight of 15 kg were used, in a completely randomized design (DCA) with three groups and 6 repetitions, with diets: T0: Control diet that does not contain inclusion of Acacia melanoxylon, T1: 15% inclusion of Acacia melanoxylon and T2: 30% inclusion of Acacia melanoxylon + 0.2% fibrolytic enzymes. Voluntary intake, weight gain, feed conversion and digestibility in sheep were evaluated. The voluntary consumption of Dry Matter was higher (0.0002) for T1 (1265.25) and T2 (1268.85) compared to T0 (863.75), in Organic Matter it showed differences being higher (0.0002) for T1 (1207.43) and T2 (1206.05) in relation to T0 (831.35); In neutral detergent fiber and acid detergent fiber there were very significant differences (<0.0001) between treatments, being the highest T2 (442.00 and 97.72 respectively) for the other treatments. The weight gain obtained differences between treatments (P=0.0288) being higher for T1 (147.90) and the best feed conversion was for T2 (0.08). The apparent digestibility of DM and OM did not show significant differences; however, there is an increase in digestibility in T1 (67.48 MS and 68.42 MO) and T2 (72.97 MS and 75.53 MO) compared to T0 that only obtained (44.18 MS and 45. 14 MO). In neutral detergent fiber they did not show significant differences (0.0002) for T1 (31,40) and T2 (50,27) in relation to T0 (13.92); And the acid detergent fiber did not show significant differences between T0 (22.39) and T1 (22.58) but the best digestibility of (FDA) was obtained by T2 (37.46). The voluntary intake of digestible DM was higher (0.0002) for T1 (874.82) and T2 (908.58) compared to T0 (637.30); In MO, a difference (0.0004) was found, being (846.30) for T1 and (869.50) for T2, while T0 obtained (627.32); FDN and FDA showed significant differences (<0.0001) in T2 (218.88 and 35.58 respectively). The voluntary consumption of the metabolic weight in DM was higher (0.0009) in T1 (106.93) and T2 (109.66) for T0 (79.65); in MO it was higher (0.0013) for T1 (102.03) and T2 (104.23) compared to T0 (76.67); in FDN and FDA in T2 were significantly different for (<0.0001) being (38.20 and 7.81 respectively). It was concluded that the use of Acacia melanoxylon plus fibrolytic enzymes improves the productive performance and digestibility in sheep.