A computerized flock record keeping system has been in use at South Dakota State University since 1965. A report is computed and published monthly from data received from flockowners. The project started with a few flocks and expanded to 67 in 1972. However, in the spring of 1975, participation dropped to about 30 flockowners and has continued to drop down to a current level of about 15. The records of those flocks completing their laying cycle during the calendar years of 1969 through 1978 are summarized in Tables 1 and 2

Plumart, P. E.

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South Dakota State UniversityOpen PRAIRIE: Open Public Research Access InstitutionalRepository and Information ExchangeSouth Dakota Poultry Field Day Proceedings andResearch Reports, 1979 Animal Science Reports1979A Ten-Year Flock Record SummaryP. E. PlumartSouth Dakota State UniversityFollow this and additional works at: http://openprairie.sdstate.edu/sd_poultry_1979This Report is brought to you for free and open access by the Animal Science Reports at Open PRAIRIE: Open Public Research Access InstitutionalRepository and Information Exchange. It has been accepted for inclusion in South Dakota Poultry Field Day Proceedings and Research Reports, 1979by an authorized administrator of Open PRAIRIE: Open Public Research Access Institutional Repository and Information Exchange. For moreinformation, please contact michael.biondo@sdstate.edu.Recommended CitationPlumart, P. E., "A Ten-Year Flock Record Summary" (1979). South Dakota Poultry Field Day Proceedings and Research Reports, 1979.Paper 5.http://openprairie.sdstate.edu/sd_poultry_1979/5POULTRYA TEN-YEAR FLOCK RECORD SUMMARYP.E. Plumart'Department of Animal Science South DakotaState UniversityPoultry-MeatsSection A.S. Series 79-21A computerized flock record keeping system has been in use at South DakotaState University since 1965. A report is computed and published monthly fromdata received from flockowners. The project started with a few flocks andexpanded to 67 in 1972. However, in the spring of 1975, participation droppedto about 30 flockowners and has continued to drop down to a current level ofabout 15. The records of those flocks completing their laying cycle duringthe calendar years of 1969 through 1978 are summarized in Tables 1 and 2.During the past 10 years the average laying cycle has varied from 13 months(396 days) in 1972 to 14.5 months (441 days) in 1977.The average number of hens housed almost doubled increasing from 5,990 in1969 to 9,872 in 1974. Since then, the size of the flocks participating hasgradually decreased to 7,143 hens in 1978. The percent depletion has decreasedfrom 1.12 to 0.92% per month. This reduction is probably primarily due toflocks now being vaccinated for Marek's disease. The 1978 depletion of 0.92%per month represents a 26% reduction of the 1970 depletion of 1.25% per month.Percent hen-day production steadily declined for 5 years from 64.4 to62.8 and then increased to 69.8 in 1978. Hen-housed production increased from58.5 to 60.1% over the first 5-year period and in recent years increased to65.4% in 1978.Due to widely fluctuating egg prices, the average income per dozen eggssold rose from 30.91 cents for those flocks closed in 1969 to 34.74 cents forthose closing in 1970. It then dropped to 21.26 cents for those closed in 1972and rose in 2 years to 46.73 cents for those closed during 1974. A dip inprices occurred during 1975 and 1976 and then increased to an all time high of47.46 cents for those flocks closing in 1977.The lowest feed cost per dozen eggs of 13.73 cents was attained by thoseflocks closed out in 1970 and the highest feed cost per dozen eggs of 26.47 centswas experienced by those flocks closing in 1977. The lowest income of 21.26cents per dozen was received by those flocks closing out in 1972 and thehighest income of 47.46 cents per dozen by those flotks closing in 1977.The average income per hen housed over feed cost fluctuated from a low of$1.27 in 1972 to a high of $4.52 for those flocks closed in 1977.Three figures were selected from the monthly data: feed cost per ton,pounds of feed per dozen eggs, and feed cost per dozen eggs for further study.These were studied to determine what happened to feed cost over two 5-yearperiods and also to learn if there was a pattern to feed cost and feedconversion over each 5-year period as well as during each year.^ Associate Professor and Extension Poultry Specialist,- 2 -Feed cost hovered around $70 per ton until November, 1972, when itstarted up. It broke $100 per ton in May, 1973, peaked at $1A2 in Octoberof 1974, settled around $121 during 1975-76, peaked again at $142 in Aprilof 1977 and has come down to about $113 in 1978. The average feed cost perton was 103% higher in 1974 than in 1969. These data are shown in Table 3.There was an annual pattern to the monthly average pounds of feed perdozen eggs. The two 5-year monthly averages showed the best conversion duringthe summer months and the poorest during the winter months. It took onepound or 22% more feed to produce a dozen eggs in January as compared to Julyduring the last 5 years. These data are given in Table 4.The annual average feed conversion improved with higher priced feed.During 1969 through 1972 a dozen eggs was produced with 4.3 pounds of feedwhen feed cost $70 per ton. When feed went up to $128 per ton in 1974, thefeed conversion dropped to 4.1 pounds per dozen and has essentially remainedthe same with feed costs hovering around $121 per ton.As indicated in Table 5, the feed cost per dozen did not fluctuateconsistently with the feed cost per ton. The high point in feed cost perdozen (31.1 cents) was in January, 1975, 3 months after the October 1974 highprice per ton ($142). However, in 1977, the high feed cost per dozen (30.9cents) was in the same month, April, as the high price of feed per ton ($142).The second 5-year monthly average feed cost per dozen showed the highestfeed cost during January (27.7 cents per dozen) and the lowest feed cost duringJuly (22 cents per dozen). There was a difference of 5.7 cents per dozen or26% in feed cost between the high and low months with gradual incrementsbetween them.In summary, feed prices started an upward movement in November, 1972,and peaked at an all time high in October of 1974 and again in April of 1977.There was a monthly pattern to feed conversion, showing the best conversionduring the summer months and the poorest conversion during the winter months.Feed cost per dozen followed the same basic pattern. Of particular note isthe fantastic rise in the feed cost per ton since mid-1973. For the flocksclosing out during the 5-year period of 1969 through 1973, the feed cost perton fluctuated between $63.78 and $79.61, whereas those closing out during thesecond 5-year period of 1974 through 1978 experienced average feed costs of$113.45 to $123.92 per ton.10Table 3. South Dakota Laying Flock Record Program Summary, Averages forFlocks Closed During the Years 1969 Through 1973AO 45 47 48 58flocks flocks flocks flocks flocksclosed closed closed closed closedduring during during during during1969 1970 1971 1972 1973Days from 20 weeks A15 422 404 396 428No. of hens housed (HH) 5,990 7,312 7,679 9,302 9,274Percent depletion 15.3 17.3 15.4 14.7 10.9Percent hen-dayproduction (HD) 64.4 64.1 63.6 63.2 63.7Eggs per hen (HD) 268.2 274.6 254.3 248.9 273.6Percent HH production 59.4 58.6 58.6 58.5 60.1Eggs per hen (HH) 247.6 250.8 234.7 230.6 258.6Lb. feed per dozen 4.43 4.21 4.31 4.38 4.39Percent Grade A large 65.35 63.92 63.84 60.93 69.44Percent Grade A medium 18.06 18.54 15.50 15.69 14.12Percent Grade A small 3.07 3.17 2.59 2.55 2.04Percent total Grade A 86.48 85.63 81.92 79.17 85.60Average income per21.26 29.55dozen sold (cents) 30.91 34.74 26.18Feed cost per dozen (cents) 14.14 13.73 14.82 14.75 17.49Income per HH over feed2.54cost ($) 3.33 4.21 2.16 1.27Feed cost per ton ($) 63.78 63.80 68.73 67.35 79.61Gross income for period ($) 37,493 51,797 38,912 38,138 58,541IITable 2. South Dakota Laying Flock Record Program Summary, Averages forFlocks Closed During 1974 Through 197847 27 18 18 10flocks flocks flocks flocks flocksclosed closed closed closed closedduring during during during during1974 1975 1976 1977 1978Days from 20 weeks 415 410 432 441 408No. of hens housed (HH) 9,872 8,984 8,372 7,265 7,143Percent depletion 10.2 12.6 15.7 14.9 12.3Percent hen-dayproduction (HD) 62.8 66.1 67.6 66.8 69.8Eggs per hen (HD) 261.5 271.9 291.6 287.8 284.9Percent HH production 59.7 61.9 62.4 61.7 65.4Eggs per hen (HH) 248.0 254.8 268.8 266.4 267.3Lb. feed per dozen 4.35 4.20 4.26 4.52 4.13Percent Grade A large 71.85 71.58 66.91 67.72 68.81Percent Grade A medium 14.82 15.60 17.03 16.57 14.33Percent Grade A small 1.86 2.31 3.08 3.17 2.84Percent total Grade A 88.53 89.48 87.02 87.46 85.98Average income perdozen sold (cents) 46.73 41.32 42.13 47.46 37.50Feed cost per dozen (cents) 24.70 26.00 25.81 26.47 23^83Income per HH over feedcost ($) 4.50 3.14 3.47 4.52 2.92Feed cost per ton ($) 113.45 123.92 121.05 123.15 115.46Gross income for period ($) 94,884 76,644 77,455 75,515 58,780IIU)Table 3- Feed Cost Per Ton (Dollars)Year Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Avg.1969 64 64 63 63 61 63 64 64 63 62 61 63 631970 65 67 65 64 65 64 67 67 69 69 69 69 671971 70 71 71 71 72 70 72 70 69 67 67 65 701972 67 73 67 68 70 71 68 70 71 69 72 77 701973 84 88 91 86 107 129 119 124 115 108 106 115 1065 yr avg. 70.0 72.6 71.4 70.4 75.0 79.4 78.0 79.0 77.4 75.0 75.0 77.8 75.21974 118 120 117 111 111 111 118 138 139 142 140 135 1281975 133 126 116 121 118 124 120 125 126 119 113 112 1211976 111 114 113 112 118 126 133 129 130 122 121 124 1211977 132 131 134 142 138 134 116 106 104 100 105 108 1211978 106 105 112 119 120 118 115 109 110 110 116 116 1135 yr avg. 120 119 118 121 121 123 120 121 122 119 119 119 121IITable 4. Feed Per Dozen Eggs (Founds)Year Jan. Feb. Mar. Apr. May June July Aug. Sept. Get. Nov. Dec. Avg.1969 4.5 4.8 4.5 4.4 4.1 4.2 3.9 3.9 4.2 4.4 4.4 4.6 4.31970 4.2 4.5 4.3 4.5 4.2 4.1 4.3 4.0 4.2 4.4 3.8 4.4 4.31971 4.3 4.3 4.5 4.3 4.1 4.1 4.3 3.9 4.5 4.2 4.4 4.8 4.31972 4.7 4.4 4.5 4.2 4.2 4.3 4.0 3.8 4.1 3.9 4.6 4.9 4.31973 4.6 4.8 4.4 4.4 4.7 4.1 3.9 4.0 4.2 4.5 4.9 4.4 4.45 yr avg. 4.5 4.6 4.4 4.4 4.3 4.2 4.1 3.9 4.2 4.3 4.4 4.6 4.31974 4.6 4.7 4.3 4.3 4.1 3.6 3.7 3.9 3.8 4.0 4.2 4.5 4.11975 4.7 4.1 4.3 4.4 3.8 3.9 3.7 3.7 3.9 4.2 4.3 4.8 4.11976 4.8 4.4 4.5 4.4 4.0 3.9 3.8 4.1 4.3 4.3 4.8 4.6 4.31977 4.4 4.3 4.2 4.3 3.8 3.9 3.6 3.9 4.0 4.0 4.3 4.5 4.11978 4.6 4.5 4.5 4.2 3.6 3.9 3.5 3.7 3.7 3.5 3.7 3.8 3.95 yr avg. 4.6 4.4 4.4 4.3 3.8 3.9 3.6 3.9 3.9 4.0 4.3 4.4 4.1IONITable 5. Feed Cost Per Dozen (Cents)Year Jan. Feb. Mar. Apr. May June July Aug. Sept. Get, Nov. Dec. Avg.1969 14.3 15.5 14.1 14.0 12.9 13.3 12.4 12.4 13.3 13.7 13.5 14.4 13.71970 13.6 15.0 14.1 14.4 13.5 13.1 14.4 13.4 14.3 15.0 14.7 15.4 14.21971 15.0 15.4 15.8 15.4 14.9 14.4 15.5 13.5 15.4 14.1 14.7 15,5 15.01972 15.6 15.9 15.1 14.4 14.8 15.4 13.7 13.4 14.6 13.6 16.4 18.8 15.11973 19.2 21.3 19.9 19.1 25.2 26.5 23.0 24.8 24.1 24.4 25.9 25.3 23.35 yr avg. 15.5 16.6 15.8 15.5 16.3 16.5 15.8 15.5 16.3 16.2 17.0 17.9 16.31974 27.0 28.1 25.3 23.6 23.0 20.0 22.1 26.9 26.5 28.8 29.3 30.4 25.91975 31.1 25.6 25.1 26.5 22.6 24.3 22.2 23.3 24.5 25.1 24.3 27.2 25.11976 26.6 25.1 25.4 25.0 23.9 24.3 25.5 26.3 28.3 26.3 28.9 28.3 26.21977 29.2 28.2 27.8 30.9 26.0 25.8 20.3 20.6 20.7 20.1 22.7 24.5 24.71978 24.7 23.8 25.1 24.6 21.9 23.3 20.0 20.1 20.6 19.3 21.1 22.1 22.25 yr avg. 27.7 26.2 25.7 26.1 23.5 23.5 22.0 23.4 24.1 23.9 • 25.3 26.5 24.8I-viI

A Ten-Year Flock Record Summary

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A Ten-Year Flock Record Summary

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