The effect of spring turnout date on weight gain by cattle on native pasture

2002 ◽  
Vol 82 (4) ◽  
pp. 575-585
Author(s):  
R. W. Jannasch ◽  
E. Charmley ◽  
A. V. Rodd
Keyword(s):  
Weight Gain ◽  
Soil Compaction ◽  
Protein Concentration ◽  
Block Design ◽  
Forage Quality ◽  
Feeder Cattle ◽  
Sward Height ◽  
Randomized Complete Block Design ◽  
Native Pasture ◽  
Grazing Period

The effect of early turnout on pasture quality and weight gain by beef cattle was assessed with 32 Hereford feeder cattle which were turned out on pasture on four separate dates in each of 2 yr in a randomized complete block design with two replications. In 1998, steers were allocated to four treatments numbered consecutively T1 to T4 according to turnout date: 6 May [110 growing degree days above 5°C (GDD)], 13 May (152 GDD), 20 May (195 GDD) and 27 May (255 GDD). Steers grazed separate 0.4-ha paddocks continuously for 28 d. In 1999, turnout dates were 11 May (124 GDD), 18 May (156 GDD), 26 May (226 GDD) and 2 June (304 GDD), with 0.6, 0.5, 0.4 and 0.3 ha of pasture allocated to each treatment (two steers, two heifers), respectively. Soil resistance to penetration, sward height, herbage mass and chemical composition, and animal liveweight gain were recorded. Early turnout did not increase soil compaction. Herbage mass at turnout for T1 to T4 was 532, 780, 1370 and 1299 kg dry matter (DM) ha-1, respectively, in 1998, and 901, 983, 1324 and 1719 kg ha-1, respectively, in 1999. Herbage mass increased by 273 kg ha-1per week as turnout was delayed in 1998 and 256 kg ha-1in 1999. Crude protein concentration declined from approximately 200 g kg-1 DM at T1 to less than 175 g kg-1 DM at T4 in both years. Fibre concentration, as indicated by ADF and NDF, increased 1 wk after turnout. Forage quality declined as turnout was delayed, but grazing did not improve forage quality relative to ungrazed swards. In 1998, cattle in T1 to T4 lost 4.7, 4.0, 1.2 and 4.2% of BW, respectively, in the week after turnout, whereas in 1999, T1 to T4 lost 1.2, 4, 0.5 and 1.5% of BW, respectively. In 1998 over the 28-d period, steers in T1 and T2 lost 0.52 and 0.21 kg d-1, respectively, whereas steers in T3 and T4 gained 0.60 and 0.51 kg d-1. In 1999, over the 28-d period, cattle in T1 to T4 gained 1.1, 0.64, 1.1 and 0.61 kg d-1, respectively, with cattle in T1 gaining significantly more weight (P < 0.014) than those in T4. The results suggest a weight gain of 0.5 to 1.0 kg d-1 can be achieved in a 28 day grazing period with early turnout on native pasture provided herbage mass ranges between 900 and 1300 kg DM ha-1 and approximately 130 kg forage DM head-1 is initially on offer. Key words: Native pasture, grazing, steer performance

scholarly journals Sward structure, light interception and herbage accumulation in forage peanut cv. Belmonte subjected to strategies of intermittent grazing management

2016 ◽  
Vol 38 (4) ◽  
pp. 395 ◽  
Author(s):  
Henrique Bauab Brunetti ◽  
Lucas Da Rocha Carvalho ◽  
Marília Barbosa Chiavegato ◽  
Sila Carneiro da Silva
Keyword(s):  
Block Design ◽  
Light Interception ◽  
Sward Height ◽  
N Supply ◽  
Tropical Forage ◽  
Randomized Complete Block Design ◽  
Morphological Composition ◽  
Leaf Accumulation ◽  
Structure Light ◽  
Interesting Alternative

Nitrogen fertilization ensures productivity and persistency of pastures, but may be expensive. Perennial forage peanut, becomes an interesting alternative for N supply. Little is known about its use under grazing. The objective of this study was to evaluate regrowth process of forage peanut using an experimental protocol analogous to tropical forage grasses under rotational grazing. Treatments corresponded to two pre- (95% and maximum canopy light interception – LI95% and LIMax) and two post-grazing (post-grazing heights of 40 and 60% of pre-grazing height) conditions, in a 2x2 factorial arrangement in a randomized complete block design (n = 4). Targets of LI pre-grazing affected  pre-grazing height and LI post-grazing. The residual sward LAI did not vary, resulting in similar grazing interval. Greater rates and total herbage accumulation were recorded for LIMax target, consequence of the greater accumulation of stolons at the lower strata of the swards. Greater percentage of leaflets was recorded for the LI95% target. Given the stoloniferous growth habit of forage peanut, stolon accumulation in the lower strata of the sward do not represent a limitation to leaf accumulation and morphological composition. The greater pre-grazing sward height associated with the LIMax target facilitate herbage prehension and intake, further investigation is needed.   

Influence of Cultural Management on Compaction of a Cerrado Latosol

2019 ◽  
pp. 1-11
Author(s):  
Matheus Azevedo Dos Santos ◽  
Aloisio Bianchini ◽  
Pedro Silvério Xavier Pereira ◽  
Rodrigo Fernandes Daros ◽  
Matheus Santos de Deus ◽  
...  
Keyword(s):  
Cover Crops ◽  
Soil Compaction ◽  
Technological Development ◽  
Block Design ◽  
Soil Conditions ◽  
Soil Density ◽  
Cultural Management ◽  
Randomized Complete Block Design ◽  
The One ◽  
Alternative Practices

Soil compaction is a process that negatively affects the availability of water and nutrients to plants. Therefore, it is necessary to evaluate alternative practices of cultural management in order to reduce soil compaction. The experimental area is located in the Foundation for Research and Technological Development Rio Verde, where 13 treatments were installed with different systems of cultural management, all rotated with soy. A randomized complete block design (DBC) was used for this experiment, with three blocks (one repetition per block), thirteen treatments and two depths of soil (0-10 cm and 10-20 cm). Physical analyzes were soil resistance to penetration, soil density, and soil moisture at the time of collection. The treatment in which the soil was stirred during the fallow period was the one that presented the lowest resistance of the soil to penetration, followed by the treatment where a mixture of cover crops was used in the second harvest, and the treatment where soybean was harvested and brachiaria in the second crop, using corn with brachiaria every two years, was the one that presented lower soil density, followed by the treatment with stirring during fallow season. Planting areas with a greater diversity of rotating plants presented as a good proposal of soil management, as they provide ideal soil conditions for the crop and for the use of rainwater or irrigation.

scholarly journals Mixed production of Alexandergrass and sorghum under nitrogen fertilization and grazing intensities

2020 ◽  
pp. 85-91
Author(s):  
André Brugnara Soares ◽  
Marcieli Maccari ◽  
Carine Lisete Glienke ◽  
Tangriani Simioni Assmann ◽  
Marcos Antonio de Bortolli ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Nutritive Value ◽  
Block Design ◽  
Evaluation Period ◽  
Forage Sorghum ◽  
The Third ◽  
Sward Height ◽  
Randomized Block Design ◽  
Grazing Intensities ◽  
Grazing Period

Annual pasture specie are used in southern Brazil to supply forage in the fall and spring when major forage species have their productivity diminished. Forage sorghum (Sorghum bicolor, (L.) Moench) is a suitable option that has been adopted by farmers due to its high quality as forage. It has been observed that in areas where forage sorghum is cultivated, alexandergrass (Urochloa plantaginea) usually appear as a spontaneous specie. The aim of this study was to observe the effect of two grazing intensities (30 and 60 cm of sward height) and two nitrogen fertilization levels (0 and 200 kg N ha-1) on the quantity (forage mass), quality (CP, ADF, NDF, Lignin, Hemicellulose, Cellulose) and morphological components (stem, leaves, senesced material) of sorghum-alexandergrass mixed pasture grazed by beef cattle. Treatments were arranged in a completed randomized block design with three replications in a 2 x 2 factorial scheme. Forage mass was increased during the evaluation period. In the first period, production was 4,022 kg and it reached 5,233kg DM ha-1 in the third period. Treatments did not affect AG-sorghum mixed pasture botanical profile or quality. It was observed that Sorghum lowered its contribution from 63.4% in the first evaluation period to 21.5% in the third. In contrast, Alexandregrass (AG), contribution increased from 17.9 to 52.7% throughout the evaluation periods. Therefore, the addition of Alexandergrass to a planted sorghum pasture is encouraged because it can extend the grazing period into the fall by prolonging the pasture favorable sward structure and nutritive value.

scholarly journals PENGGUNAAN DAUN UBI KAYU (Manihot esculenta) DENGAN PENGOLAHAN BERBEDA TERHADAP PERFORMA KAMBING PERANAKAN ETAWA JANTAN

2019 ◽  
Vol 7 (2) ◽  
pp. 223
Author(s):  
Okni Winda Artanti ◽  
Muhammad Ridla ◽  
Lilis Khotijah
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Feed Efficiency ◽  
Body Weight Gain ◽  
Block Design ◽  
Trial Duration ◽  
Cassava Leaves ◽  
Randomized Complete Block Design ◽  
Efficiency Data ◽  
Range Test

The objective of this experiment was to evaluate the effect of fresh, dried or silage cassava leaf to the performances of male Etawa Crossbreed (EC) goats. Fourteen male EC goats (grouping based on body weight with a weight range K1: 19-20 kg; K2: 20-21 kg; K3: 21-22 kg; K4: 22 kg) were allocated in housed individually throughout 90-day trial duration (14 days for animal's adaptation to the experimental diets and 7 days of faeces collection). Experimental design was randomized complete block design consisted of 3 treatments and 4 replications: concentrate + fresh cassava leaf (T0); concentrate + dried cassava leaf (T1); and concentrate + silage cassava leaf (T2). Concentrat was given at level of 50% (3% BW) and forage was given ad libitum respectively for each treatments. Variables observed were feed intake, digestibility, body weight gain, and feed efficiency. Data were analyzed using analysis of variance (ANOVA), if there were significant effect of treatments were continued using Duncan multiple range test. The results of this experiment showed that the processing of cassava leaf increased on dry matter intake, crude protein, total digestible nutrient (TDN), digestibility, body weight gain, and feed efficiency. The conclusions were processing of cassava leaves improved the consumption and digestibility of male EC goats and the treatment of cassava leaf silage had the best feed efficiency. Keywords: Cassava Leaf, Performance, Digestibility, Male Etawa Crossbreed Goat.

scholarly journals Comportamiento ingestivo diurno de bovinos de ceba en praderas del pasto Guinea (Panicum maximum cv. Mombasa

2011 ◽  
Vol 12 (2) ◽  
pp. 167 ◽  
Author(s):  
Emiro Suárez P. ◽  
Sony Reza G. ◽  
Fredy García C. ◽  
Iván Pastrana V. ◽  
Eliecer Díaz A.
Keyword(s):  
Weight Gain ◽  
Beef Cattle ◽  
Feeding Behavior ◽  
Block Design ◽  
Live Weight ◽  
Ingestive Behavior ◽  
Panicum Maximum ◽  
Stocking Rate ◽  
Live Weight Gain ◽  
Randomized Complete Block Design

<p>El objetivo de este estudio fue evaluar el efecto de la carga animal sobre la conducta de alimentación diurna y el rendimiento productivo de los novillos de engorde. La investigación se llevó a cabo durante 107 días, a partir de julio hasta octubre de 2010, en el Centro de Investigación Turipaná de Corpoica (Cereté, Colombia). Ganado Bovinos de ceba Cebú comercial con un peso promedio de 314 ± 29 kg que pastorearon en una pradera de Guinea cv. Mombasa (Panicum maximum). Se utilizaron dos diseños experimentales. El primero empleó un diseño de bloques completos al azar (DBCA) con submuestreo, con tres tratamientos (5, 6 y 7 animales/ha) y dos repeticiones para el análisis de la producción de la calidad del forraje y la ganancia diaria de peso vivo. El segundo fue un DBCA con tres tratamientos y tres repeticiones, correspondientes a nueve unidades experimentales, diseñados para el análisis de las variables de comportamiento ingestivo diurno. Se encontraron diferencias entre el rendimiento de materia seca y la ganancia diaria de peso vivo (P ≤ 0,05), con la carga de 5 animales/ha (5.070 ms/ha y 0,730 kg días-1, respectivamente). En cuanto a las variables de pastoreo diurno, la rumia total y la rumia parada se encontraron diferencias (P ≤ 0,05) entre las diferentes unidades. La tasa media de 7 animales/ha tuvo el mayor tiempo de pastoreo (7,53 horas), em comparación con los tratamientos de 5 y 7 animales/ha, que mostró 6,81 y 6,37 horas, respectivamente. La tasa de bocados no varió (P ≤ 0,05) entre las cargas. Las variables de comportamiento ingestivo evaluadas, al igual que la ganancia diaria de peso vivo y rendimiento de forraje, fueron influenciadas por la carga animal.</p><p> </p><p><strong>Diurnal ingestive behavior of beef cattle on Guinea grass (Panicum maximum cv. Mombasa)</strong></p><p>The objective of this study was to evaluate the effect of stocking rate on the diurnal feeding behavior and productive performance of fattening steers. The research was carried out over 107 days, from July until October 2010, at the Turipaná research center of Corpoica (Cereté, Colombia). Beef cattle comercial zebu with an average weight of 314 ± 29 kg grazed in a pasture of Guinea cv. Mombasa (Panicum maximum) grass. We used two experimental designs. The first employed a randomized complete block design with subsampling, with three treatments (5, 6, y 7 animals/ha) and two replicates for the production analysis of forage quality and daily live weight gain. The second was a randomized complete block design with three treatments and three repeats, corresponding to nine experimental units, designed for the analysis of diurnal feeding behavior variables. Differences were found between the dry matter yield and daily live weight gain (P ≤ 0.05) with the load of 5 animals/ha (5,070 kg ms/ha and 0,730 kg/day-1, respectively). As for the diurnal grazing variables, total rumination, and standing ruminating, the study also resulted in disparities (P ≤ 0.05) between the different units. The stocking rate of 7 animals/ha had the highest grazing time (7.53 hours), compared to the treatments of 5 and 6 animals/ha, which showed 6.81 and 6.37 hours, respectively. The biting rate did not vary (P ≤ 0.05) between loads. Ingestive behavior variables assessed, as well as the daily live weight gain and yield were influenced by stocking rate.</p>

scholarly journals PENGARUH PEMBERIAN RANSUM DARI LIMBAH JERAMI PADI DAN ONGGOK MELALUI PERLAKUAN CAIRAN RUMEN TERHADAP PERFORMAN DOMBA

2016 ◽  
Vol 10 (2) ◽  
pp. 215
Author(s):  
Sindu Akhadiarto
Keyword(s):  
Weight Gain ◽  
Rice Straw ◽  
Feed Intake ◽  
Block Design ◽  
Feed Conversion ◽  
Nutritive Quality ◽  
Randomized Complete Block Design ◽  
Feeding Diets ◽  
By Products

Decreasing of land for agriculture pushed the exploiting of agricultural and industrialby-products for feedstuffs. Rice straw and “onggok” represent the by-products thatvery potential to use for feedstuffs. However these by-products have low digestionvalue for livestock. Therefore processing of the by-products before use is essensialto increase its quality. The experiment was conducted for 7 weeks to investigatethe effects of feeding diets containing rumen liquor treated-rice straw or rumenliquor treated-onggok on the performance of local male sheeps. Parametersmeasured were feed intake (g/head/day), weight gain (g/head/day), and feedconversion. Data from randomized complete block design were analized usingANOVA and if its showed significantly different contras ortogonal test was used.The result showed that the treatments significantly (P<0,05) affected feed intake,weight gain, and feed conversion. R2 and R3 treatments significantly (P<0,01)increased feed intake compared with R4 and R1 treatment, while between R2 andR3 treatments, and R1 and R4 treatments were not different. It can be concludedthat treament of rumen liquor to rice straw could improve its nutritive quality whichwas proved by good performance of sheeps fed diets containing rumen liquortreated rice straw.

scholarly journals Soil compaction affects sunflower and Paiaguas palisadegrass forage productivity in the Brazilian savanna

2020 ◽  
pp. 1131-1139 ◽  
Author(s):  
Adalto José de Souza Linhares ◽  
Wainer Gomes Gonçalves ◽  
Savio Menezes Cabral ◽  
Marlete Ferreira de Brito ◽  
Eduardo Valcacer Brandstetter ◽  
...  
Keyword(s):  
Bulk Density ◽  
Soil Compaction ◽  
Plant Biomass ◽  
Block Design ◽  
Biomass Productivity ◽  
Soil Bulk Density ◽  
Stem Length ◽  
Highly Sensitive ◽  
Randomized Complete Block Design ◽  
Livestock Systems

Integrated crop-livestock systems maximize land use, infrastructure and labor; diversify production; and minimize costs, thereby reducing risks and adding value to agricultural products. However, growing mechanically harvested crops can negatively affect soil structure, reducing plant biomass productivity. The present study aimed to evaluate soil compaction and its effects on the forage productivity of sunflower and Brachiaria brizantha cv. BRS Paiaguas during the second cropping period. The experiment was conducted as a split-plot randomized complete block design with four replications. Four compaction levels represented by traffic from an agricultural tractor were established: 0 (absence of compaction), 2, 10 and 30 passes over the same spot. Two forage systems were established in the subplots: sunflower grown solely as a monocrop (40,000 plants ha-1) or intercropped with Paiaguas palisadegrass (10 plants linear m-1). The following parameters were quantified: soil bulk density, plant height, capitulum diameter and 1000-achene weight for sunflower; stem length and the leaf/stem ratio for Paiaguas palisadegrass; and total and partitioned forage productivity. The results showed that sunflower was highly sensitive to soil compaction and that the development and productivity of this species decreased in response to the greatest bulk density, which in turn affected the Paiaguas palisadegrass. Overall, intercropping is recommended for increased forage productivity.

scholarly journals Effect of Vermicompost on Yield and Forage Quality in Intercropping of Maize and Mung

2017 ◽  
Vol 9 (5) ◽  
pp. 233
Author(s):  
Parastoo Shadab Niazi ◽  
Reza Monaem ◽  
Amin Azadi
Keyword(s):  
Mung Bean ◽  
Block Design ◽  
Forage Quality ◽  
Green Gram ◽  
Research Center ◽  
Forage Maize ◽  
Mixed Farming ◽  
Significant Difference ◽  
Randomized Complete Block Design

To evaluate the quality and quantity of forage maize and green mung beans in monoculture and mixed farming an experiment was carried out in the form of split plot in a randomized complete block design with three replications at educational and research center of Azad University of Shahre Rey in 2013. Vermicompost was considered at three levels in the main plots (zero, 2.5 and 5 tons per ha) and mixed planting of five levels as subplots (100% green gram; 100% corn; 50% green gram and 50% corn; 75% and 25% of corn plus 25% and 75% of mung bean respectively). The results showed that the highest forage dry yield belonged to 75% maize + 25% mung bean. Forage quality of intercropping of maize and mung bean was higher than maize monoculture. The highest digestibility belonged to 75% mung bean + 25% corn, which statistically had no significant difference compared with 50% corn + 50% mung bean.

PSXIII-3 Effects of mineral source and additive in mineral supplementation on productive performance of growing beef cattle on tropical pastures

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 460-461
Author(s):  
Victor Valério de Carvalho ◽  
Alexandre Perdigão ◽  
Guilherme S F M Vasconcellos ◽  
Tiago S Acedo
Keyword(s):  
Weight Gain ◽  
Beef Cattle ◽  
Block Design ◽  
Experimental Unit ◽  
Productive Performance ◽  
Tropical Pastures ◽  
Mineral Supplement ◽  
Mineral Supplementation ◽  
Randomized Complete Block Design ◽  
Supplement Intake

Abstract Our objective was to evaluate the effects of mineral supplementation using the association of carboaminophosphochelates as mineral source plus Salinomycin on grazing beef cattle performance during growing phase. A total of 80 Nellore bulls (IBW = 292.72 ± 13.55 kg; Age, ~13 mo) were distributed in 8 paddocks (~2.7 hectares each) planted with Palisade Grass cv. Xaraés during the rainy to rainy-to-dry transition seasons (February to May). The experiment was a randomized complete block design (10 animals/paddock, 4 paddocks per treatment). The mineral supplementation was provided ad libitum and treatments were: Control; Mineral supplementation containing inorganic minerals, and TM+Salinomycin = Mineral supplementation containing carboaminophosphochelates (TM, Tortuga® Minerals) as minerals source (Cr, Se, Zn, Mn, S, Cu e Co) plus Salinomycin (~108 mg per animal/day). The supplement orts were removed and weighted daily to calculate supplement intake. The animals were weighed after a 14 h-fasting at the beginnig and end of the trial (84 days) to calculate weight gain. The paddock was considered the experimental unit and data were analyzed using PROC MIXED of SAS, whereby means were separated using the PDIFF statement (P &lt; 0.05). Supplement intake was similar between treatments (P = 0.13). Animals supplemented with TM+Salinomycin tended to have greater final BW (358 vs. 347, P = 0.07) and increased ADG in 22,3% (0.730 vs. 0.597 kg/d, P = 0.03) compared with animals fed Control. In conclusion, the combination of carboaminophosphochelates minerals plus salynomicin improves grazing beef cattle weight gain, with no deleterious effect on mineral supplement intake.

scholarly journals DESEMPENHO DE GUANDU ASSOCIADO À SUBSOLAGEM QUANTO À PRODUÇÃO DE FITOMASSA E DESCOMPACTAÇÃO DE SOLO

Nativa ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 343
Author(s):  
Tassiano Maxwell Marinho Câmara ◽  
Rodolfo Godoy
Keyword(s):  
Soil Compaction ◽  
Cover Crop ◽  
Green Manure ◽  
Block Design ◽  
Pigeon Pea ◽  
Leguminous Plant ◽  
Root Production ◽  
Randomized Complete Block Design ◽  
Set Up ◽  
Resistance To Penetration

O trabalho teve por objetivo avaliar a produção de fitomassa aérea e de raízes de genótipos de guandu cultivados com e sem subsolagem e o efeito dessas práticas na descompactação de um latossolo amarelo distrocoeso típico de Tabuleiro Costeiro em Alagoas. O experimento foi instalado no delineamento em blocos ao acaso em esquema de parcelas subdivididas com três repetições. As parcelas foram constituídas pelo tipo de preparo de solo (com ou sem subsolagem), as subparcelas compostas de diferentes cultivares de guandu (Fava Larga, BRS Mandarim e linhagens g5-94 e g8-95) e pousio, e as subsubparcelas por diferentes profundidades do perfil de solo (0-20, 20-40, 40-60, 60-80 e 80-100 cm). Os resultados constataram que as raízes das plantas de cobertura concentraram-se nos primeiros 20 cm de solo. A subsolagem não influenciou a produção de biomassa aérea, mas a produção de raízes foi, em média, menor com a subsolagem. Decorridos oito meses do plantio não foram observados efeitos significativos da subsolagem e do cultivo do guandu, isolados ou em associação, quanto à resistência do solo à penetração. Dentre os genótipos avaliados, BRS Mandarim e Fava Larga apresentam maior potencial para uso como planta de cobertura nas condições locais.Palavras-chave: adubação verde; compactação do solo; leguminosas; penetrômetro de impacto. PIGEON PEA’S PERFORMANCE ASSOCIATED TO SUBSOILING FOR PHYTOMASS PRODUCTION AND SOIL DECOMPRESSION ABSTRACT: The aim of this work was to evaluate the aereal and roots phytomass production of pigeon pea genotypes of farmed with and without subsoiling and the effect of these practices on the decompression of a yellow dystrophic latosol typical of the Coastal Tableland in Alagoas. The experiment was set up in a randomized complete block design in a split plots scheme with three replications. The plots was constituted by the type of preparation soil (with and without subsoiling), the subplots was composed by different pigeon pea cultivars (Fava Larga, BRS Mandarim and lineages g5-94 and g8-95) and fallow, and sub-subplots by soil profile depths (0-20, 20-40, 40-60, 60-80 and 80-100 cm). The results showed that the roots of the cover plants were concentrated in the first 20 cm of soil. Subsoiling did not influence aerial biomass production, but root production was, on average, smaller with subsoiling. After eight months of planting, no significant effects on soil resistance to penetration were observed with subsoiling and pigeon cultivation, isolated or in association. Among the evaluated genotypes, BRS Mandarim and Fava Larga present better potential for use as a cover crop under local conditions.Keywords: green manure; soil compaction; leguminous plant; impact penetrometer.

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