Proceedings of the 56th Annual Meeting of the Brazilian Society of Animal Science Florianópolis – Brazil. The authors are responsible for the grammatical and textual review of the manuscripts and abstracts. NOTICE: The individual contributions in this publication and any liabilities arising therefrom are the sole responsibility of the authors and do not necessarily represent the views of the companies and supporters, as well as of the Brazilian Society of Animal Sciences.
The theme of the 56th Meeting is therefore "Animal science: the challenges of production and the sustainability of the planet", and aims to provide an environment for scientific and technical discussions and boost animal productivity in Brazil, thus meeting increasingly demanding meet markets. . 13 Effect of the humectant addition of hydrated ground corn to kid goat diets on performance growth. 159 Effects of the spineless cactus as a wetting additive, associated with urea on gas and effluent losses, pH and aerobic stability of the ground corn silage.
160 Effect of thiazolidinedione (TZD) and the corn treatment delivered to late lactating ewes on milk protein synthesis. 161 Effect of type of mineral supplement and supply strategy on animal performance and disappearance of the supplement.
Nonruminant nutrition and production (area coordinator: Rodrigo Garófallo Garcia)
249 Ruminal finishing parameters of Nellore cattle receiving different sources of undegraded rumen protein. 257 Silage of a total mixed ration with incorporation of organic acids for lactating cows: intake and digestibility. 258 Complete silage of mixed rations with incorporation of organic acids for lactating cows: milk composition and production.
21 Prevalence of subclinical mastitis in the postpartum period and the impact on the return to estrus of Lacaune sheep. 338 Melatonin in the maturation of bovine oocytes under heat shock affects the initial development and quality of embryos. 340 Multiple trait models in genetic evaluation of feed efficiency traits in Nellore cattle using Bayesian inference.
343 Stability of estimated breeding values for yearling weight using unknown parental groups in Nellore cattle. 347 Definition of weighting for one-step genome-wide linkage study for carcass fat in Nellore cattle.
Aquaculture and fish farming (area coordinator: Delano Dias Schleder)
337 Melatonin in maturation media and fission rates of oocytes from lactating dairy cows during summer. 344 The inbreeding pattern per generation and its effect on milk yield, growth and reproductive characteristics in Guzerá cattle. 345 Variance analysis of the heat tolerance index, hair and skin characteristics of cattle under heat stress.
Effects of temperament and dominance on consumption, feeding behavior and water intake in confined beef calves. 354 Influence of Temperament and Dominance of Confined Bulls on Consumption, Behavior and Feed Efficiency 355 Temperature-Based Control of Ventilation System in a Composted Barn: Effect on the Environment and Thermal Physiology of Dairy Cows. 358 Characterization of the DanBred and Duroc hog hair coat in free-range systems.
361 Effect of shade and full sun environments on the respiratory rate of Nellore steers finished in the semi-arid region. 368 Silvopastoral system as an alternative to mitigate the decline in milk production during hot seasons.
Companion and wild animals (area coordinator: Procassia Lacerda Barbosa)
359 Development of models for predicting high broiler mortality rates under extreme weather conditions. 360 Do sheep reared in an equatorial semi-arid environment use sun-orientation behaviour. 383 Study of morphological and behavioral characteristics of dog breeds registered in the world from 2006 to 2016.
Animal production systems (area coordinator: Tiago Goulart Petrolli)
403 Pellet durability index in feed with different levels of substitution of wheat bran with malt roots. 405 Quality of Tambaqui kibbeh with added essential oil of copaiba and oregano ph, cooking loss and texture 406 Rumen degradable protein and intestinal digestibility of dried corn distillers grains.
Food science and animal products (area coordinator: Deise Helena Baggio Ribeiro)
The experiment was carried out at the Agronomic Experimental Station of the Federal University of Rio Grande do Sul, located in Eldorado do Sul-RS, Brazil, between 2018 and 2019. The protocol is set out in completely randomized blocks, with four replications. 1 (F + 150N) and This was similar to the accumulated emission of urine: 99.9 ton-CO2-ha-1. The higher organic matter (OM) content of the faeces, which is related to the availability of N in the fertilizer, provides substrate for soil microorganisms that produce CO2 during respiration, which increases the release of this gas, since the urine does not have the OM content of the soil did not increase, the CO2 emission was lower. After collection, the material was weighed, chopped and a sample dried in a forced air circulation oven at 65°C until a constant weight was reached to determine its dry mass production. The data were analyzed by Tukey test.
This study aimed to evaluate the dry matter (DS) contribution of the different functional groups in different herb masses (HM) of the Pampa biome grasslands. 60 Effect of the reducing agent in estimating the in vitro digestibility of dry matter. The population of endoparasite larvae in the meadows of the system cattle forest was evaluated.
For statistical analysis, the data were subjected to ANOVA and comparison of means using the SISVAR statistical system with the Tukey test (α=0.05). The fertilized hybrid Brachiaria 'Cayana' had structural characteristics such as greater final leaf length (30.68 cm). compared to 24.28 cm), greater grass height (16.32 cm compared to 13.74 cm) and greater number of leaves per cut (5.03 vs. 4.57 leaves per cut) compared to 'Cayano' without fertilization. The experimental design was complete randomized blocks with three treatments and four replications. The pasture types (PT) were: Marandu mixed palisade grass (Urochloa brizantha Stapf cv. Regarding bromatological variables, there was an interaction between cultivation and hybrid systems only for DM and CP levels, but all hybrids showed SS content close to the range that is recommended for silage production Silage of genotype 30F53 showed a lower value of CP in the mutual system compared to the others (AG1051 and NS70).
The LDM ha-1 showed a decreasing trend in the production of leaves as the cutting period progressed. The cutting heights and residuals showed no influence and there were no visualized interactions between the treatments. The dry matter of the Pennisetum glaucum 'BRS 1503' leaves was superior (9.90g), on the other hand the S. Approval of the Ethics Committee on the use of animals at the State University of Maringá (Protocol.
The odds ratio estimated by OR = exp (bk), which is the ratio of the proportions for two possible outcomes, i.e. the ratio between success (πy) and failure (1 - πy) to obtain longer feeding time respectively, was used for the interpretation of the coefficients. 133 Chemical-bromatological parameters of corn silage in the northern region of Rio Grande State. The apparent digestibility data were used in the calculation of the digestibility coefficients of dry matter (DM), crude protein (CP), neutral detergent fiber (EDF), acid detergent fiber (ADF), ether extract (EE) and mineral matter (MM).
Animals showed similarity in final weight, ADG and confinement time regardless of the diets used (235 days). The design was completely randomized, with four experimental diets and a 2 x 2 factorial (two sizes of corn kernels, whole corn or cracked corn) and with or without supplements containing essential oils and exogenous enzymes) with nine replications. for each factor. Experimental diets were composed of 160 g kg-1 crude protein in DM and a proportion of 180 g kg-1 MS corn silage and 820 g kg-1 MS concentrate, which was: D1, corn grain and supplement; D2, maize in grain without additive; D3, cracked corn and additive; D4, cracked maize without additive). In this study, the daily intake of animals was estimated using the following formula: Feed intake (g day-1) = fecal production (g day-1) / (1 - digestibility).
PD” is potential degradability; "A", water-soluble fraction; "B", potentially degradable fraction; "C", degradation rate of fraction "b" (h-1); "T", incubation time (h).
