The Nutritive Value Of Forage Crops

Raymond, W. F.

doi:10.1016/s0065-2113(08)60095-4

Cited by 160 publications

(97 citation statements)

References 305 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Entre os principais parâmetros relacionados com a qualidade das forrageiras, destacam-se o consumo alimentar e a digestibilidade (RAYMOND, 1969). A forragem consumida determina a quantidade de nutrientes ingeridos e, consequentemente, a produção animal.…”

Section: Introductionunclassified

“…A proteína bruta tem sido relacionada com o consumo de matéria seca. Todavia, para forragens com teor de proteína bruta abaixo de 4 a 6%, na base da matéria seca, o consumo de matéria seca seria limitado pela baixa disponibilidade de compostos nitrogenados para os microrganismos do rúmen (RAYMOND, 1969). No entanto, uma vez corrigida essa deficiência, o consumo seria limitado pela taxa de remoção de resíduos indigestíveis do rúmen.…”

Section: Introductionunclassified

See 1 more Smart Citation

Consumo e digestibilidade aparente dos nutrientes da silagem de milho e dos fenos de alfafa e de capim-coastcross, em ovinos

et al. 2001

View full text Add to dashboard Cite

RESUMO -Avaliaram-se o consumo e a digestibilidade aparente dos nutrientes, e o balanço de nitrogênio da silagem de milho e dos fenos de alfafa e de capim-coastcross, em ensaio com ovinos. Foram utilizados 15 animais, sem raça definida, castrados, com peso médio de 47,5 kg, distribuídos em um delineamento em blocos casualizados com cinco repetições. O consumo de matéria seca, em g/Kg 0,75 , foi influenciado pelos alimentos, registrando-se maior valor (68,06), para os animais que receberam feno de alfafa. Os consumos de fibra em detergente neutro e extrato etéreo foram menores para os animais que receberam silagem de milho. Já os consumos de proteína bruta e nutrientes digestíveis totais, de 201,97 e 643,42 g/dia, respectivamente, foram maiores para os animais alimentados com feno de alfafa. Este resultado deve-se ao fato de o feno de alfafa possuir melhor valor nutritivo e estar associado ao teor mais elevado de matéria seca. As digestibilidades aparentes da matéria seca e proteína bruta, de 56,47 e 73,92%, respectivamente, também foram maiores para os animais que receberam feno de alfafa. O balanço de nitrogênio foi positivo apenas para os animais alimentados com fenos, os quais apresentaram ganhos de peso de 100,79 e 147,62 g/dia para feno de capim-coastcross e feno de alfafa, respectivamente, enquanto que os animais alimentados com silagem de milho apresentaram perda de peso (-34,92 g/dia). Este fato pode ser atribuído a superioridade da composição química dos fenos em relação à da silagem de milho. Palavras-chave: balanço de nitrogênio, fibra detergente neutro, proteína bruta Intake and Apparent digestibility of Nutrients of the Corn Silage and Alfalfa andCoastcross Bermudagrass Hays, Fed to Sheep ABSTRACT -To evaluate the intake, nutrients apparent digestibilities and nitrogen balance of corn silage, alfalfa and coastcross bermudagrass hays a digestibility trial with sheep was conducted. Fifteen crossbred castrated sheeps, with average live weigth 47.5 kg, were used in a randomized blocks design with four repplicates. The dry matter intake, in g/kg 0.75 , was influenced by feed and the higher value (68.06) was observed in animals fed with alfalfa hay. The ether extract and neutral detergent fiber intakes were smaller for animals fed with corn silage. The total digestible nutrients and crude protein intakes was higher for animals fed with alfalfa hay, both values were 210.97 g/day and 643.42 g/day, respectively. This result is related to the high nutritional value and dry matter content of the alfalfa hay. The crude protein and dry matter apparent digestibilities (56.47 and 73.92%, respectively) were higher on animals fed alfalfa hay. The nitrogen balance was positive only for animals fed alfalfa hays. The average live weight gain were 100.79 and 147.62 g/day for coastcross bermudagrass and alfalfa hays, respectively. The animals fed with corn silage lost live weight (-34.92 g/day). This result could be associated with the fact that the chemical composition of the hays is better than the corn silage.

show abstract

Section: Introductionunclassified

Consumo e digestibilidade aparente dos nutrientes da silagem de milho e dos fenos de alfafa e de capim-coastcross, em ovinos

et al. 2001

View full text Add to dashboard Cite

show abstract

“…At the same stage of development the digestibility is usually better in an early type grass than in a late type (Pritchard et al 1963, Christie andMowat 1968). On the other hand, the digestibility of a late type plant species such as red clover remains good longer (Minson et al 1960, Raymond 1969). According to Hakkola (1978) English rye grass had the highest and orchard grass the lowest digestibility at all stages of development.…”

Section: Quality Characteristics Of Speciesmentioning

confidence: 99%

Growth factors and management technique used in relation to the developmental rhythm and yield formation pattern of a clover-grass stand

Pulli

1980

AFSci

View full text Add to dashboard Cite

Abstract. The effect of the first cutting date and cutting frequency on the clovergrass stand growth and development and on the relationships between plant species were studied at the University of Helsinki in 1974 76. The second study objective was the relationships between several growth factors and the yield components of the stand. The third study area comprised the energy value changes and the photosynthetic activity of the stand during different phases of the growing season.The most rapid growth and development occurred within the temperature range of 400 500°C (27 > 0°C). The late first cutting date increased yields most in the 2-and 3-cutting systems and least in the 4-cutting system, due to two summer cuts during the dry period of the season.Due to the regrowth ability of the species and lack of water in midsummer leading easily to dormancy there was a negative correlation between the first and the second cut and a positive correlation between the following successive cuts.The most important variables in the regression model describing DM production in the first, second, third and fourth cut were temperature sum in degree days, precipitation during the week before the previous cut, amount of precipitation between cuts and the physiological activity of the stand, respectively. The energy value o f spring and autumn DM yield was higher than that of midsummer. The average photosynthetic efficiency was 0.95 % in 1974 and 0.47 % in 1975.The DM content of the yield in spring decreased until the temperature sum of 420°C (27 > 0°C) and then increased linearly.The DM content, protein content, digestibility of DM and protein yield in the total yields were mostly influenced by the first cut if made when the slope showed either decreasing or increasing values of DM content. Otherwise a late first cutting date or low cutting frequency lowered the quality of the forage.In the mixture the spring growth of timothy ceased by the end of June and was replaced by red-clover. The regrowth of timothy ceased by the middle of July and was replaced by meadow fescue. The growth of red clover was the most uniform throughout the entire growing season.

show abstract

“…Infection of alfalfa by P. medicaginis (Lib.) Sacc can reduce the yield and fodder quality, including palatability, digestibility, and protein content (Hanson et al, 1965;Raymond, 1969). Morgan and Parbery (1977) found that CLS could cause a decrease in the relative growth rate and leaf area ratio; reduce the rate of net assimilation in leaves and increase its rate in roots, and delay and reduce flowering, all of which resulted in the reduction of dry matter production by over 40%.…”

Section: Introductionmentioning

confidence: 99%

Association of AFLP and SCAR markers with common leafspot resistance in autotetraploid alfalfa (Medicago sativa)

Wang¹,

Bi²,

Yuan³

et al. 2012

Genet. Mol. Res.

View full text Add to dashboard Cite

ABSTRACT. To identify amplified fragment length polymorphism (AFLP) markers associated with resistance or susceptibility of alfalfa to common leafspot (CLS) caused by the fungus Pseudopeziza medicaginis (Dermateaceae), bulked segregant analysis was conducted based on an F 1(M × M) population of 93 plants and a BC 1 S population of 91 plants. Three AFLP markers, ACTCAA R206 , TAGCAC R185 , and GGACTA S264 , were found to be associated with CLS resistance or susceptibility. All three markers were found at significantly different frequencies (71.9, 80.3 and 91.8%) compared to resistant or susceptible plants in the original population. Subsequently, these three AFLP markers were converted into three SCAR markers, ACTCAA R136 , TAGCAC R128 and GGACTA S254 , which are easier to employ in breeding programs. The three SCAR markers were used in a randomly selected population with 50% resistance; the probability of finding one resistant plant was increased to 67.3, 66.7 and 90.0% with markers ACTCAA R136 , TAGCAC R128 and GGACTA S254 , independently. If two of the SCAR markers were used simultaneously, the probability would be higher than 89%. The three SCAR markers identified in this study would be applicable for selection for CLS resistance in alfalfa breeding programs. Moreover, the genetic analysis indicated that CLS resistance in alfalfa is conferred by a single dominant gene.

show abstract

The Nutritive Value Of Forage Crops

Cited by 160 publications

References 305 publications

Consumo e digestibilidade aparente dos nutrientes da silagem de milho e dos fenos de alfafa e de capim-coastcross, em ovinos

Consumo e digestibilidade aparente dos nutrientes da silagem de milho e dos fenos de alfafa e de capim-coastcross, em ovinos

Growth factors and management technique used in relation to the developmental rhythm and yield formation pattern of a clover-grass stand

Association of AFLP and SCAR markers with common leafspot resistance in autotetraploid alfalfa (Medicago sativa)

Contact Info

Product

Resources

About