INFLUENCE DES CULTIVARS, DES DATES ET DES DOSES DE SEMIS SUR LE RENDEMENT ET LA QUALITÉ DE LA LUZERNE L’ANNÉE DU SEMIS

The effects of cultivars, seeding rates and dates on alfalfa (Medicago sativa L.) yield and quality in the seeding year were studied from 1971 to 1975 on a Kamouraska clay. Results showed the importance of seeding alfalfa before the end of May. Seedings made in early and in mid-May resulted in equivalent yield. Differences between cultivars were more important on the second than on the first cut. Regrowth was an important factor in the seedling year. The total yield of the Alfa cultivar is higher than Vernal and Narragansett and it is also higher for every combination of rates and seeding dates. Seeding rates were not an important factor except at the first cut where a rate of 6.7 kg/ha gave a lower yield than a rate of 13.4 kg/ha. Dry matter digestibility of Alfa is sometimes higher than for the other cultivars in the study. Late seeding generally increased the digestibility of the second cut dry matter, whereas rates of seeding have no effect on either first or second cut material. The crude protein content is not affected by seeding rates and the effects of cultivars are generally very small. With a delay in seeding dates the crude protein content of the second cut material is sometimes increased.Key words: Medicago sativa L., cultivar, date, rate

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EFFECTS OF EARLY SUMMER AND FALL CUTTING MANAGEMENT ON DRY MATTER YIELDS, DIGESTIBILITY, CRUDE PROTEIN, AND SURVIVAL OF SARANAC AND NARRAGANSETT ALFALFAS

Canadian Journal of Plant Science ◽

10.4141/cjps72-162 ◽

1972 ◽

Vol 52 (6) ◽

pp. 941-948 ◽

Cited By ~ 1

Author(s):

L. B. MacLEOD ◽

H. T. KUNELIUS ◽

F. W. CALDER

Keyword(s):

Medicago Sativa ◽

Crude Protein ◽

Dry Matter ◽

Early Summer ◽

Good Survival ◽

Considerable Decrease ◽

Dry Matter Digestibility ◽

Medicago Sativa L ◽

Cutting Management

The effects of early summer and fall cutting managements on two alfalfa (Medicago sativa L.) cultivars were studied over a 3-year period. Removal of the first crop of Saranac and Narrangansett alfalfas at prebud stage, followed by two cuts at the early bloom stage before early September, and a late fall harvest on October 25, produced seasonal dry matter (DM) yields of 7.5–8.6 metric T/ha in the 1st year. Stand deterioration, however, was severe and by the 3rd year, practically all alfalfa had disappeared. Average percent crude protein (CP) in cut 1 was 17.7–21.9 and percent in vitro dry matter digestibility (IVD) 67.4–73.8. Removal of the first cut at bud stage with two subsequent harvests at the early bloom stage also allowed a total of three harvests before early September and resulted in seasonal DM yields of 8.6–8.8 in the 1st year. Although the survival of alfalfa was increased over the managements where cut 1 was at prebud stage, a considerable decrease of alfalfa was still observed in the 3rd year. Under this management, average CP in cut 1 was 15.8–16.3 and IVD 64.1–68.4. Harvesting the first crop at early to midbloom stage and the second crop at early bloom in early to mid-August, followed by third harvest in late October, resulted in good survival with seasonal DM yields of 6.1–10.6. Lower CP and IVD were recorded in cut 1 than in the more intensive managements. Under all managements, average CP in cuts 2 and 3 was 14.9–17.3 and 13.3–19.4, respectively. IVD was 54.5–60.7 in cut 2 and 56.0–64.4 in cut 3.

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Effect of harvesting time on forage yield and quality of maize

Biotechnology in Animal Husbandry ◽

10.2298/bah1803345m ◽

2018 ◽

Vol 34 (3) ◽

pp. 345-353 ◽

Cited By ~ 1

Author(s):

Violeta Mandic ◽

Zorica Bijelic ◽

Vesna Krnjaja ◽

Aleksandar Simic ◽

Maja Petricevic ◽

...

Keyword(s):

Protein Content ◽

Crude Protein ◽

Dry Matter ◽

Matter Content ◽

Forage Yield ◽

Dry Matter Content ◽

Crude Protein Content ◽

Maize Hybrid ◽

Growing Seasons ◽

Yield And Quality

Maize is the very important silage source in the world. Timely harvesting ensure high maize forage yield and quality. Therefore, the study focused on the effects of four harvesting times (starting at the 12 August every 7 days) on yield and qualitative parameters of forage green mass of maize hybrid ZP 677. The experiment was set in Vojvodina Province, Serbia, during the 2013 and 2014 growing seasons. Plant height, stem diameter, number of leaves per plant, ear percentage, forage yield, dry matter content and crude protein content were higher, while stem percentage was lower in 2014 with favorable climatic condition. Forage yield, crude protein content, ADF and NDF decreased, while dry matter content significantly increased with delay in harvesting. The maize hybrid should be harvested when the milk line is three-quarter of the way down the grain that is in the third decade of August.

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YIELD AND QUALITY OF SOME KALE-CORN COMBINATIONS

Canadian Journal of Plant Science ◽

10.4141/cjps80-119 ◽

1980 ◽

Vol 60 (3) ◽

pp. 807-811 ◽

Cited By ~ 2

Author(s):

R. S. FULKERSON

Keyword(s):

Protein Content ◽

Corn Stover ◽

Crude Protein ◽

Dry Matter ◽

In Vitro Digestibility ◽

Crude Protein Content ◽

Yield And Quality ◽

Row Width

Midas marrowstem kale (Brassica oleracea L.) was grown in different row width associations with United 106 corn (Zea maize L.) in two studies and ensiled in different moisture blends with corn stover in another. Highest dry matter yields were obtained where a single row of kale was grown at 30 cm to the side of a corn row. This combination also provided the lowest moisture content feed and the highest in vitro digestibility and crude protein content. Changing the corn row width had no significant effect upon yield, plant height, in vitro digestibility, kale leaf or corn ear content. Blending kale with corn stover to provide a silage of about 70% moisture increased the digestibility and protein content of the feed and provided a silage that kept well in storage.

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Residues and Efficacy With Fluazifop-P in Alfalfa (Medicago sativa)

Weed Technology ◽

10.1017/s0890037x00034242 ◽

1992 ◽

Vol 6 (1) ◽

pp. 25-30 ◽

Cited By ~ 1

Author(s):

Douglas J. Doohan ◽

Gilles Belanger ◽

Russ R. King ◽

Jerry A. Ivany

Keyword(s):

Medicago Sativa ◽

Protein Content ◽

Crude Protein ◽

Dry Matter ◽

In Vitro Digestibility ◽

Dry Matter Yield ◽

Crude Protein Content

Fluazifop-P, applied in the spring or fall and pronamide, applied in the fall only, reduced quackgrass infestation in established alfalfa and increased the dry matter yield of alfalfa. Herbicides did not improve alfalfa in vitro digestibility or crude protein content. Average residues of fluazifop-P in alfalfa treated with rates of 0.25 or 0.5 kg ai ha–1, were 0.1 mg kg–1when harvested 280 d after application, and 0.06 mg kg–1when harvested 295 d after application. Average residues in alfalfa harvested 41 and 55 d after application were 0.13 mg kg–1and 0.1 mg kg–1, respectively, with a 0.25 kg ha–1treatment and 0.19 mg kg–1and 0.05 mg kg–1, respectively, with a 0.5 kg ha–1treatment.

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INFLUENCE DES CULTIVARS, DES DATES ET DES DOSES DE SEMIS SUR LE RENDEMENT ET LA QUALITÉ DE LA LUZERNE SEMÉE EN FIN D’ÉTÉ

Canadian Journal of Plant Science ◽

10.4141/cjps84-092 ◽

1984 ◽

Vol 64 (3) ◽

pp. 667-675 ◽

Cited By ~ 1

Author(s):

L. BELZILE

Keyword(s):

Medicago Sativa ◽

Crude Protein ◽

Dry Matter ◽

First Year ◽

Seeding Rate ◽

Yield And Quality ◽

Seeding Date ◽

Yield Quality ◽

Medicago Sativa L

The effects of cultivars, date and rate of seeding on the yield and quality of alfalfa (Medicago sativa L.) seeded at the end of summer and harvested the year after was studied from 1971 to 1975 on a Kamouraska clay. Seeding in early August gave the best results; seeding should not be carried out after mid-August. Differences between cultivars were more important on the third than on the first cut. Aftergrowth was an important factor on yield during the first year of harvest. Seeding rate did not always affect the yield, but the 6,7 kg/ha rate yielded less than the 13,4 kg/ha rate at the first cut and when the cuts were summed. The combined effects of the three factors studied indicates the importance of the seeding date on the height, cover and yield of alfalfa. Digestibility and crude protein content of the dry matter were affected more by seeding dates than by cultivars. The effect of cultivars on quality was variable and seeding rates had no effect. The variation in forage quality may be attributed to a difference in maturity of the plant at harvest, rather than only to the factors studied.Key words: Medicago sativa L., cultivar, date, rate, yield, quality

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Seasonal production of Andropogon gayanus

The Journal of Agricultural Science ◽

10.1017/s0021859600023455 ◽

1971 ◽

Vol 77 (1) ◽

pp. 47-52 ◽

Cited By ~ 7

Author(s):

R. J. Haggar ◽

M. B. Ahmed

Keyword(s):

Protein Content ◽

Crude Protein ◽

Dry Matter ◽

Crude Protein Content ◽

Wet Season ◽

Mature Leaves ◽

Dry Matter Digestibility ◽

Andropogon Gayanus ◽

The Mean

SummaryThe crude protein content and in vitro dry-matter digestibility (I.V.D.) of leaves and stems of Andropogon gayanus, grouped into four different age categories, were measured at weekly intervals during the secondhalf of the 1968 wet season. The crude protein content of all categories of leaf and stem rose to a maximumat ear emergence; significant reductions occurred thereafter, especiallyin the younger categories of leaf and stem. At any point in time the younger leaves and stems contained significantly more crude protein than the older leaves and stems.Although the mean crude protein content of each stem category was significantly lower than the corresponding leaf category, the young, elongating stems had a significantly higher crude protein content than the older, mature leaves at the time of ear emergence.The mean I.V.D. of all leaf and stem categories was highest at the start of the recording period. At ear emergence the I.V.D. of the young elongating stems was at least as high as the mature leaves. After ear emergence the I.V.D. of the stems fell more rapidly than the leaves.The results support the principle of cutting at ear emergence to achieve maximum yields of digestible nutrients.

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Assesment of Biochemical Forage Quality of Sweet Sorghum [Sorghum bicolor (L.) Moench ssp. saccharatum]

Asian Journal of Chemical Sciences ◽

10.9734/ajocs/2021/v9i319071 ◽

2021 ◽

pp. 1-9

Author(s):

Abdullah Oktem ◽

Celal Yucel ◽

Ayse Gulgun Oktem

Keyword(s):

Protein Content ◽

Sweet Sorghum ◽

Crude Protein ◽

Dry Matter ◽

Forage Quality ◽

Neutral Detergent Fiber ◽

Net Energy ◽

Crude Protein Content ◽

Acid Detergent Fiber ◽

Dry Matter Digestibility

In this study, it was aimed to determine some forage quality characteristics of sweet sorghum genotypes in semi-arid climatic conditions. The experiment was set up in randomized complete block design with 4 replicates. Research was carried out in 2016 and 2017 under Harran Plain second crop conditions, Sanliurfa, Turkey. In the study 21 genotypes of sweet sorghum were used. Crude protein content, crude ash, acid detergent fiber (ADF), neutral detergent fiber (NDF), dry matter digestibility, dry matter consumption, were determined in the study. Significant differences were found between the genotypes for tested characteristics (P≤0.01). According to average of two years, crude protein content ranged from 4.20% (Tracy) to 5.90% (USDA S.Africa), crude ash from 4.44% (Theis) to 6.90% (Topper 76), acid detergent fiber (ADF) from 27.84% (Nebraska sugar) to 36.30% (USDA-Zaire). The highest NDF value was obtained from USDA-Zaire genotype (56.49%) whereas the lowest values were seen at N98 genotype (43.11%). Dry matter digestibility values were between 60.62% (USDA-Zaire) and 67.21% (Nebraska sugar), dry matter consumption between 2.14% and 2.85%. The highest relative feed value was obtained from N98 genotype (148.95) whereas the lowest values were seen at USDA-Zaire genotype (101.00). Net energy values ranged from 1.38 Mcal kg-1 (USDA-Zaire) to 1.50 Mcal kg-1 (Nebraska sugar). Considering the properties examined in terms of feed quality, it was seen that the crude protein content and net energy value was low. But ADF, NDF, digestible dry matter, dry matter consumption and relative feed values were within acceptable levels. Nebraska sugar, Topper 76, N98, Roma, M81E, Tracy and Corina genotypes were found as the best for forage quality in sweet sorghum. It was determined that sweet sorghum can be used as a forage source.

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Criteria for expressing nutritional values of subtropical grasses

Australian Journal of Agricultural Research ◽

10.1071/ar9600121 ◽

1960 ◽

Vol 11 (2) ◽

pp. 121 ◽

Cited By ~ 17

Author(s):

R Milford

Keyword(s):

Protein Content ◽

Crude Protein ◽

Dry Matter ◽

Protein Digestibility ◽

Poor Quality ◽

Early Spring ◽

Crude Protein Content ◽

Nutritional Values ◽

Dry Matter Digestibility ◽

Sufficient Energy

The results from digestibility experiments made with 17 different subtropical grasses are discussed. The most suitable criteria for expressing nutritional values are crude protein content, crude protein digestibility, nitrogen balance, dry matter intake, and dry matter digestibility. Feeding standards based on starch equivalents and total digestible nutrients which are used in temperate environments are highly inaccurate when applied to these subtropical species. Large seasonal fluctuations occur in the nutritional value of subtropical grasses. At the height of the summer growing season values are very high and adequate for all forms of animal production. In the winter and early spring the grasses are generally of poor quality and are unable to meet the requirements for producing livestock. At this time the crude protein content and crude protein digestibility are low. Animals are also unable to obtain sufficient energy because the dry matter intakes and dry matter digestibilities of the grasses are low. The very low nutritive values obtained during winter and early spring usually occur after grasses have been killed by frost. Frost resistance is therefore an important criterion in selecting subtropical grasses which will maintain high nutritional values throughout the entire yew.

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Digestibility of the lichen Stereocaulon paschale in reindeer

Rangifer ◽

10.7557/2.1.1.400 ◽

1981 ◽

Vol 1 (1) ◽

pp. 27

Author(s):

Endre Jacobsen

Keyword(s):

Chemical Composition ◽

Protein Content ◽

Crude Protein ◽

Dry Matter ◽

Apparent Digestibility ◽

Crude Protein Content ◽

Northern Norway ◽

Dry Matter Digestibility

The digestibility of the lichen Stereocaulon paschale is studied in a digestibility trial with two reindeer calves. The lichen is collected near Kautokeino in Northern Norway. Chemical composition of the lichen is shown in Table 1. Compared with Cladonia-species the content of crude protein and ash is higher in Stereocanlon paschale The content of Ca, P and Mg in the two species is of the same magnitude, while the content of Na and CI is ten times higher in Cladonia alpestris. The estimated digestibility is shown in Table 2. The dry matter digestibility is calculated to 46, 4%, which is very low compared to Cladonia-species. The higher crude protein content in Stereocaulon paschale has resulted in a positive apparent digestibility of protein.Tinajåkålån (Stereocanlon paschale) sulavuus porolla.Abstract in Finnish / Yhteenveto: Tinajåkålån sulavuutta on tutkittu sulavuuskokeissa kahdella poronvasalla. Kokeessa kåytetty jåkålå on koottu låheltå Kautokemoa. Jåkålån kemiallinen koosturnus on esitetty taulukossa I. Tinajåkålån sisåltåmå raakaproteiini- ja tuhkapitoisuus on korkeampi kuin (Cladonia-lajeilla). Ca-, P- ja Mg-pitoisuudet ovat po. jåkålålajeilla samantasoiset, kun taas Cladonia alpestris sisaltåmåt Na- ja Cl-pitoisuudet ovat kymmenen kertaa korkeampia. Sulavuuslaskelmat esitetåån taulukossa 2. Kuiva-aineen sulavuus on 46,4% mikå on erittåin alhainen verrattuna Cladonia-lajien sulavuuteen. Tinajåkålån korkeampi proteiinisisålto on vaikuttanut myonteisesti valkuaisaineen sulavuuteen.Fordøyelighet av saltlav, (Stereocaulon paschale) til reinAbstract in Norwegian / Sammendrag: Fordøyeligheten av saltlav (Stereocaulon paschale) er undersøkt i fordøyelsesforsøk med 2 reinkalver. Lav til forsøket er sanket nær Kautokeino. Kjemisk sammensetning av lavet er vist i Tabell 1. Sammenlignet med Cladonia-arter er innholdet av råprotein og aske høyere i saltlavet. Innholdet av Ca. P og Mg er på samme nivå i disse arter, mens innholdet av Na og Cl er ti ganger høyere i Cladonia alpestris. Den beregnede fordøyelighet er vist i Tabell 2. For tørrstoff er fordøyeligheten 46,4%, som er svært lavt sammenlignet med fordøyeligheten for Cladonia-arter. Det høyere proteininnholdet i saltlav har ført til positiv fordøyelighet for protein.

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Development of yield and nutritive value of timothy in primary growth and regrowth in northern growing conditions

Agricultural and Food Science ◽

10.2137/145960610792912602 ◽

2008 ◽

Vol 19 (3) ◽

pp. 252 ◽

Cited By ~ 6

Author(s):

O. NISSINEN ◽

P. KALLIAINEN ◽

L. JAUHIAINEN

Keyword(s):

Organic Matter ◽

Protein Content ◽

Crude Protein ◽

Dry Matter ◽

Nutritive Value ◽

Rapid Decline ◽

Crude Protein Content ◽

Percentage Unit ◽

Primary Growth ◽

Organic Matter Digestibility

The development of the yield and nutritive value of timothy (Phleum pratense L.) both in the primary growth and in the regrowth were studied at MTT Plant Production Research, a unit of MTT Agrifood Research Finland, in Rovaniemi (66°35´N) in 19992001. The dry matter yield and leaf:stem ratio were measured from the crop samples, and the contents of crude protein and organic matter digestibility of both whole plant samples and leaf and stem fractions were analysed. In primary growth, the most rapid increase of dry matter, 220240 kg ha-1 per day, was measured around the beginning of the heading stage. There was a very strong positive correlation between the proportion of stems and the amount of dry matter in the primary yield. The daily growth rate of the regrowth was less than half of that of the primary growth. The fastest decrease, 1 percentage unit per day, in crude protein content was measured at the pasture stage (45-leaf stage). During the entire sampling period, the average daily decline in crude protein content in the primary growth of timothy was 0.65 percentage units. The main cause for the rapid decline in crude protein content was the high proportion of stem matter and its low protein content. In the regrowth, during the last four weeks before the harvest, the average daily decline in crude protein content was 0.28 percentage units.The average decline in organic matter digestibility from early pasture stage to late silage stage was 0.9 percentage units per day. The most remarkable change was noticed at the growth stage of timothy when about the half of stems were heading and it was then that the digestibility decreased by more than one percentage unit per day. The rapid decline in organic matter digestibility was due to the low digestibility of stem matter. The daily change in forage digestibility in the regrowth was very small, on average 0.11%.;

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