Caracterização e restrições de forrageiras indicadas para as diferentes espécies de animais de produção – revisão

Amorim, Diego Sousa; Silva, Alex Lopes; Sousa, Sheila Vilarindo de; Sousa, Paulo Henrique Amaral Araújo de; Lima, Barbara Silveira Leandro de; Reis, Á. L. A.

doi:10.21674/2448-0479.31.215-237

Cited by 5 publications

(5 citation statements)

References 9 publications

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“…N was divided into four parts and applied at the beginning of each grazing cycle (adaptation and experimental). Fertilizer doses were defined according to a previous experiment of nitrogen and potassium fertilization carried out in the area to ensure amean yield of 5500.00 kg DMha −1 of Massai grass (SILVA et al, 2017). Eighteen Dorper x nondescript crossbred sheep (six females and twelve intact males), with a mean weight of 24 kg ± (4) and six months of age were tested.…”

Section: Methodsmentioning

confidence: 99%

“…Massai grass is a suitable forage for livestock activity due to its productivity and structure. It also has important characteristics for its exploitation in the meat sheep, such as low size, soil fixation, high regrowth capacity, and tolerance to intense grazing (AMORIM et al, 2017;LEMPP et al, 2001;SAMPAIO et al, 2016). Besides choosing the appropriate forage, it is necessary to assess how sheep behave among pasture management possibilities by observing the animal reaction to established defoliation limits in order to assist in the adequate definition of pasture height management.…”

Section: Introductionmentioning

confidence: 99%

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Ingestive behavior of sheep on Massai grass under different pre-grazing heights under rotational stocking

Cardoso

Sousa

Ferreira

et al. 2019

Rev. bras. saúde prod. anim.

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SUMMARY This studyaimed to assess the influence of three pre-grazing heights of Massai grass on the ingestive behavior of sheep under rotational stocking. Eighteen Dorper x nondescript crossbred sheep were used under rotational stocking on Massai grass at pre-grazing heights. The animal stocking was estimated to ensure a reduction of approximately 50% of the initial height. Behavior assessments were performed from 6 to 18 h at the entrance and exit of animals from paddocks. The longest activity was grazing, followed by rumination and other activities, and the period from 6 to 10 h showed the longest grazing.In the other periods, the animals in the 35-cm treatment grazed less when compared to those ofthe other treatments. Rumination in all treatments was more significant in the period from 14 to 18 h, but the animals in the 45-cm treatment spent more time doing this activity, which gave them a higher time of rumination of the food bolus, as well as ruminating chews. The bite rate was higher for the 25-cm treatment, followed by the 45 and 35-cm treatments, respectively.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ingestive behavior of sheep on Massai grass under different pre-grazing heights under rotational stocking

Cardoso

Sousa

Ferreira

et al. 2019

Rev. bras. saúde prod. anim.

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“…O esgotamento da fertilidade natural do solo tem conduzido os pecuaristas a uma cíclica substituição de espécies forrageiras no sentido daquelas menos exigentes e, frequentemente, de menor valor nutritivo (Soares Filho et al, 1992b). A maioria das propriedades possuem áreas com diferentes condições edafoclimáticas, desta forma, são indicadas diferentes espécies forrageiras para a mesma propriedade (Amorim et al, 2017). Neste contexto, torna-se necessário a escolha correta da forrageira que mais se adaptada à região e que atenda ao objetivo da produção quer seja para pastagem, feno, capineiras ou para serem ensiladas.…”

Section: Fatores Responsáveis Pela Degradação Das Pastagensunclassified

Degraded pastures and recovery techniques: Review

Carvalho

Minighin

Gonçalves

et al. 2017

Pubvet

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RESUMO.A degradação das pastagens tem sido um grande problema para a pecuária brasileira, em que o uso das mesmas na produção de ruminantes é a forma mais econômica de alimentação. Essas, quando bem manejadas e utilizadas respeitando-se suas características fisiológicas e exigências climáticas e de fertilidade do solo, mantêm-se produtivas por muito tempo. No entanto, estima-se que 80% dos 50 a 60 milhões de hectares de pastagens cultivadas no Brasil Central encontram-se em algum estado de degradação, ou seja, são incapazes de sustentar os níveis de produção e qualidade exigida pelos animais. Essa degradação é decorrente de vários fatores que atuam isoladamente ou em conjunto, desde a espécie forrageira, sua implantação e o manejo. Assim, faz-se necessário a utilização de técnicas para a recuperação de pastagens, de forma a otimizar o aproveitamento da área, recuperar as propriedades químicas, físicas e biológicas do solo e viabilizar a produção de proteína animal, devido ao aumento da capacidade de suporte da pastagem. A presente revisão tem como objetivo apresentar alguns aspectos ligados à degradação das pastagens e as principais técnicas utilizadas para a recuperação dessas Palavras chave: conservação do solo, produção animal, sistema silvopastoril Degraded pastures and recovery techniques: ReviewABSTRACT. The degradation of pastures has been a great problem for the Brazilian livestock, in which the use of them in the production of ruminants is the most economic form of feeding. These, when well managed and used respecting their physiologic al characteristics and climatic requirements and soil fertility, remain productive for a long time. However, it is estimated that 80% of the 50-60 million hectares of pasture grown in Central Brazil are degradated, which means that they are unable to sustain the production levels and quality required by the animals. This degradation is due to several factors acting in isolation or together, from the forage species, its implantation and the management. Thus, it is necessary to use techniques for the recovery of pastures, in order to optimize the utilization of the area to recover the chemical, physical and biological properties of the soil and to enable the production of animal protein, due to increased pasture support capacity. The present review aims to present some aspects related to the degradation of pastures and the main techniques used to recover these pastures.

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“…Grasses of the genus Cynodon include several tropical forage species with capacity to feed ruminants (Amorim et al, 2017). The center of origin of these species is Africa where they present high productivity potential given the soil and climate conditions (Hanna;Sollenberger, 2007).…”

Section: Introductionmentioning

confidence: 99%

African star grass response to postemergence herbicides

2019

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Cynodon nlemfuensis Vanderyst, commonly called African star grass, is excellent forage in pasture formation and herd feeding. However, little information is available regarding weed management in areas of star grasses. Two field experiments were carried out in 2017 and 2018 to evaluate the response of African star grass to postemergence herbicides. The treatments applied were as follows: 2,4-D (1,340.0 g ae ha-1); 2,4-D + picloram (720.0 +192.0 g ae ha-1 + 0.3% v/v nonionic surfactant); fluroxypyr + picloram (80.0 + 80.0 g ae ha-1 + 0.3% v/v mineral oil); fluroxypyr + aminopyralid (160.0 + 80.0 g ae ha-1 + 0.3% v/v mineral oil); fluroxypyr + triclopyr (320.0 + 960.0 g ae ha-1 + 0.3% v/v mineral oil); bentazon (720.0 g ai ha-1 + 0.5% v/v mineral oil); imazapyr (25.0 g ai ha-1); monosodium methyl arsenate (MSMA) (1,440.0 g ai ha-1 + 0.1% v/v nonionic surfactant); atrazine + S-metolachlor (1,480.0 + 1,160.0 g ai ha-1); atrazine + tembotrione (1,000.0 + 100.8 g ai ha-1 + 0.3% v/v mineral oil) and a control without herbicide application. The most phytotoxic treatments for the African star grass plants were fluroxypyr + amininopyralid, fluroxypyr + triclopyr and atrazine + tembotrione. The dry matter yield of star grass plants was not reduced by the applications of 2,4-D, 2,4-D + picloram, bentazon, imazapyr, MSMA and atrazine + S-metolachlor. These herbicides can be considered potential practices in African star grass crop management.

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Caracterização e restrições de forrageiras indicadas para as diferentes espécies de animais de produção – revisão

Cited by 5 publications

References 9 publications

Ingestive behavior of sheep on Massai grass under different pre-grazing heights under rotational stocking

Ingestive behavior of sheep on Massai grass under different pre-grazing heights under rotational stocking

Degraded pastures and recovery techniques: Review

African star grass response to postemergence herbicides

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