The nutritive value of five sorghum hybrids (AG-2002, AG-2005E, AG-X202, AG-X213 and AG-X215) silages, cultivated under increasing fertilization levels (control, 0.5, 1.0, and 2.0 times of the recommended fertilization, corresponding to 0, 45.5, 91, and 182 kg/ha N; 0, 49, 98, and 196 kg/ha de P2O5; and 0, 14, 28, and 56 kg/ha de K2O, besides of 0, 42, 84, and 168 kg/ha S, respectively, that came from the used ammonia sulfate). A complete randomized block design in a factorial 5×4 arrangement (five hybrids […]

In order to evaluate the in situ degradability of the dry matter and crude protein of silages of six sorghum genotipes in different stages of maturation, four fistulated crossbred holstein-zebu steers, fed with grass hay ad libitum, were utilized. The silage samples were dried and milled at 5 mm screen and 5 g of each sample were placed in 12 x 18 cm naylon bags and 50 µm porous size, and were introduced through the fistulas. After different times of […]

This work aimed to evaluate the effect of the sorghum growth stage on the silage chemical composition, intake milk production and fat compared with corn silage to dairy cows. The experiment was carried out at the “São Bento do Una” research Stattion, from IPA, located in “São Bento do Una”, Pernambuco, Brazil. Nine holstein lactating cows were distributed in three Latin squares design. The squares were formed according to milk yield and the lactating order and consisted of three cows […]

The objective of this work was to evaluate different levels of enegetic supplementation, in the form of grounded sorghum for finishing of cull cows from different genotypes of Charolais (C) x Nellore (N), kept on cultivated pasture during the last half of the vegetative cycle. Thirty C, N, 3/4 C + 1/4 N (CN) and 3/4 N + 1/4 C (NC) beef cows, kept on cultivated pasture of oats (Avena strigosa) + ryegrass (Lolium multiflorum) were allotted in three supplementation […]

A 3-year study was conducted at EPAGRI – Experimental Station of Ituporanga, SC – Brazil, to select corn and sorghum cultivars suitability for silage production. Thirteen and eight corn and sorghum cultivars were tested and allotted to a complete randomized block experimental design, with three replications. The planting was done in 6m x 6m plot area. The harvest was done when the plant presented a dough stage of maturity. The evaluated characteristics included dry matter yield, crude protein, and total […]

ABSTRACT – The objective of this work was to evaluate the effect of a commercial bacterial inoculant containing Lactobacillus plantarum, Streptococcus faecium and Pediococcus acidactili on the quality and dry matter (DM) loss of sorghum (Sorghum bicolor L. Moench) during the ensilage process. The treatments were constituted of two types dual propose sorghum silage harvested at the dough stage: without (control) and with inoculant; three positions in each silo (front, middle and back regions) corresponding to three periods of collection […]

The starch solubility in bicarbonate-phosphate buffer (SSB) and the ruminal degradability of starch from some feed by the in situ technique, using three Holstein cows, were evaluated in this study. The feeds were ground through a 2-mm screen for the concentrate and a 5-mm screen for forage and incubated using nylon bag (53mm). The starch concentration in corn, sorghum, cassava scraping, wheat bran, triticale, corn silage, sorghum silage, soybean meal, cottonseed meal and citrus pulp were: 79.3, 83.4, 91.4, 49.1, […]

This experiment was conducted to compare the tannin content of four sorghum varieties using six quantitative methods of tannin determination. A completely randomized design in a 4 x 6 (variety x method) factorial arrangement with four replicates was used, where: T1: Folin Denis (Folin Denis reagent reflux); T2: Folin Denis (water reflux); T3: Folin Denis (water reflux followed by filtration); T4: Lowental, T5: Vanilin cloridric acid of Burns, and T6: Vanilin cloridric acid modified of Burns. The highest tannin content […]

This study was conducted to evaluate the corn (Zea mays L.) AG 1051 and the sorghums (Sorghum bicolor (L.) Moench) AG 2006 and BR 303, for silage production, and the effect of substitution of soybean meal by urea (0,50 and 100%) in the concentrated diets for feedlot cattle. The silages were used in two experiments and the animals were alloted to a completely experimental design. In the first, 72 F1 crossbred Brown Swiss x Nellore bulls, with 20 months of […]

The objective of this experiment was to evaluate the fermentative quality of sorghum silage of small, medium and high size with different stem+leafs/head proportions (100:00, 80:20, 60:40, 40:60, 20:80, 00:100), by means of lab analysis. The whole plant was used as control. The hybrids were cultivated and ensiled at 104 days of age in PVC lab silos measuring 10-cm of diameter by 40-cm of length (three replications per treatment). Silos were opened 56 days after the ensilage. The crude protein […]