Ciencias Agropecuarias

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Subject: search.filters.subject.CONSUMO VOLUNTARIO

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    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 Gonzalo
    The 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.
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    Efecto del consumo de dietas a base de residuos postcosecha de theobroma cacao sobre las funciones ruminales en bovinos
    (2017) León Andrade, Andrea Estefanía; Barros Rodríguez, Marcos
    The objective of the present investigation was to evaluate the effect of cocoa residue flour, incorporated in cannulated male adult bovine diets, on the main ruminal functions, for which three treatments, one control treatment (T0) a treatment with 15% cocoa residue flour (T1) and another with 30% cocoa residue flour (T2). The ruminal functions evaluated were: voluntary consumption, pH, ammonia nitrogen and VFA, kinetics of in situ ruminal degradation and gas production in vitro, parameters that showed a positive trend over treatment with 15% cocoa residue flour. In the analysis on voluntary consumption, T1 and T2 were the most accepted, and ruminal pH remained below 6, decreasing cellulolytic activity, but optimal for amylolytic ruminal microorganisms, which favors the degradation of non-structural carbohydrates and with this , the formation of propionic acid in the rumen; the results obtained in the D2 were possibly due to the unsaturated fat content of the cocoa residues, which influences the formation of energy through the propionic acid in the rumen, in terms of kinetics of the in situ degradability of Matter Dry matter and Organic matter, the highest degradation was obtained in the bulls fed with T1 and T2, in fraction A (soluble fraction / MS: P = 0.0100-MO: P = 0.0008), and the trend was maintained with respect to the hours of ruminal degradation, however, in the analysis of in vitro gas production, it was observed that T2 generates the lowest total gas production (P = <0,0001) on the incubated diets. It was concluded that adding to a balanced diet 15% of cocoa residue meal, generates an effective degradation on the nutrients consumed by the animal and also decreases the volume of production of greenhouse gases, optimizing the productivity of the animal, and which improves their nutrition by effectively degrading ingested foods and reducing their energy expenditure in the production of greenhouse gases.
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    Efecto de la achira (Canna edulis) sobre el consumo voluntario y la digestibilidad aparente de nutrientes en cuyes (Cavia porcellus) en la etapa de engorde
    (2017) Caguana Lagua, María Hortencia; Rivera, Verónica
    The objective of this inquiry was to evaluate the effect of ingestion of the diets based on achira flour on the productive behavior, voluntary consumption and apparent digestibility of nutrients the guinea pig. This research was carried out in the Faculty of Agricultural Sciences - UTA. Twenty-eight male guinea pigs, of 8 weeks old were used, randomly distributed in four experimental diets: T1 with 0% of achira flour, T2 with 8% of achira flour, T3 with 16% of achira flour, T4 with 24% of Achira flour. Voluntary intake of nutrients from diets was evaluated; weight gain; Feed conversion and apparent nutrient digestibility. Voluntary intake of nutrients showed no difference between treatments for the following nutrients: dry matter (P = 0.0570) with 62.670 g / day in T2 being the highest value among treatments; Organic matter (P = 0.0377) for T2 with 64.933 g / day; Neutral detergent fiber (P = 0.0214) for T2 with 24,440 g / day and acid detergent fiber (P = 0.0346) for T2 11.6583 g / day. While for crude protein showed differences (P = <.0001) between treatments being the highest consumption for T2 (17.4567 g / day). Weight gain and feed conversion were better in T2 treatment with 12,607 g / day and 5.04. In the apparent digestibility, there was no difference between treatments for the following nutrients: dry matter (P = 0.7145) with 73.650 g / day in the T1 being its highest value between treatments; Organic matter (P = 0.8032) for T1 with 71.023g / day; Neutral detergent fiber (P = 0.4125) for T1 with 49.100 g / day and acid detergent fiber (P = 0.3217) for T1 39,057 g / day. While for protein (P = 0.9625) the highest consumption is for T2 with 70,295 g / day.
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    Comportamiento productivo de ovinos alimentados con dietas a base de fruta de pan (Artocarpus altilis)
    (2017) Silva Bastidas, Arsenio Oliveros; Barros Rodríguez, Marcos
    The objective of this research was to evaluate the effect of the consumption of diets based on breadfruit (Artacarpus altilis) on the productive behavior of sheep. Eighteen male sheep with a mean age of 7 to 8 months and a weight of 22.23 kg were used. A completely randomized design (DCA) was used, with three treatments and six replicates, in addition to an analysis of variance and Tukey's test at 5%, with the statistical package SAS 2009. The treatments were T1: 100% alfalfa. (Witness); T2: 80% alfalfa + 20% breadfruit; T3: 60% alfalfa + 40% breadfruit. The variables evaluated were: voluntary nutrient intake (CVMS, CVMO, FVCF and FVCFN), weight gain (GP g / day) and feed conversion (CA), voluntary consumption of dry matter, organic matter and neutral detergent fiber Presented difference P = (0.0001) between treatments being the one of greater consumption T3 (1652.71; 1560.16; 872.63g) respectively. Regarding the consumption of acid detergent fiber, difference P = (0.0001) between treatments was observed, with the highest T1 value (585.77g). Regarding the weight gain presented difference P = (0.0001) between treatments obtaining the highest weight gain T3 (218.88 g / day). The feed conversion presented difference P = (0.0001) obtaining the smallest result T3 (7.55). Based on the results obtained, it is concluded that sheep fed diets containing 40% of breadfruit inclusions constitute an alternative food resource, being able to improve the productive parameters obtaining a good productive response, possibly due to the content of non-structural carbohydrates present In T3
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    Efecto del consumo de dietas a base de fruta de pan (Artocarpus altilis) sobre la digestibilidad de los nutrientes en ovinos
    (2017) Ruilova Ruilova, Ruth Araceli; Barros Rodríguez, Marcos
    The objective of the present research was to evaluate the effect of the consumption of diets based on breadfruit (Artacarpus altilis) on the digestibility of nutrients in sheep. For which 12 male sheep with an average age of 7 to 8 months and an average weight of 23.50 kg were used, a completely randomized design (DCA) was used, with three treatments and four replicates, in addition to an analysis of variance and Test of Tukey to 5%, with the statistical package SAS 2000. The treatments were T1: 100% of alfalfa. (Witness); T2: 80% alfalfa + 20% breadfruit; T3: 60% alfalfa + 40% breadfruit. The variables evaluated were: Voluntary intake of nutrients (CVMS, CVMO, CVFDN and CVFNA), Apparent nutrient digestibility (DMS, DMO, DFDN, DFDA) Being the highest value T3 and T2 (1651.29 and 1594.21 respectively). The voluntary consumption of organic matter and neutral detergent fiber presented differences (P = 0.0002 and 0.0001) between treatments, with the highest consumption T3 (1558.82; 871.88) and T2 (1496.96; 835.37) respectively. While for the voluntary consumption of acid detergent fiber shows differences (P = 0.0001) being its greater consumption T1 and T2 (583.01 and 582.26) respectively. Regarding the apparent digestibility of dry matter and neutral detergent fiber, differences (P = 0.0001) were observed between treatments, with the highest T3 digestibility (48.23 and 43.34), respectively. The digestibility of acid detergent fiber did not show a difference between treatments (P = 0.2208), based on the above results, and the differences between the treatments (P = 0.0001) and the highest digestibility T3 and T2 (55.58 and 53.91 respectively) It can be concluded that the incorporation of breadfruit in sheep diets can improve the digestibility of nutrients, possibly due to the non-structural carbohydrate content present in T3, which can improve the ruminal environment.