RANDOM REGRESSION GENETIC EVALUATION OF HOLSTEIN BULLS USING DIFFERENTTEST DAY RECORDS

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ASHRAFIAN ALI; EMAM JOMEH KASHAN NASER; ABDOLLAHI ARPANAHI ROSTAM; SAYAD NEJAD MOHAMMAD BAGHER

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Paper Information

Journal: Journal of Animal Production Year:2018 | Volume:20 | Issue:3 Page(s): 401-408

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Information Journal Paper

Title

RANDOM REGRESSION GENETIC EVALUATION OF HOLSTEIN BULLS USING DIFFERENTTEST DAY RECORDS

Author(s)

ASHRAFIAN ALI | EMAM JOMEH KASHAN NASER | ABDOLLAHI ARPANAHI ROSTAM | SAYAD NEJAD MOHAMMAD BAGHER | Issue Writer Certificate

Keywords

BREEDING VALUEQ2

DAIRY COWQ2

GENERATION INTERVALQ2

HOLSTEINQ2

PROGENY TESTQ2

Abstract

In order to determine the optimum number of test-day records for the PROGENY TEST program of HOLSTEIN bulls, 732, 140milk yield test-day were used. These milk yield test-days, which were related to 73, 214 first parity DAIRY COWsbelonging to 62 herds, had been collected by the Animal Breeding Center of Iran from 1992 to 2016. The correlationof predicted BREEDING VALUE (EBV) of bulls from ten test-day of their daughters compared with EBV predicted fromdifferent number of recorded test-days. The Correlation of predicted EBV from ten test-days with EBV from even, odd, (second, fifth, seventh), (second, fifth, tenth) and (second, sixth) test-day records were estimated to be 0. 99, 0. 98, 0. 98, 0. 97 and 0. 94 respectively. The results showed that to reduce cost of recording, number of records andgeneration interval in EBV prediction of bulls with random regression model it is recomanded to use only second, fifth and seventh test-day records instead of ten test-days.

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APA: Copy

ASHRAFIAN, ALI, EMAM JOMEH KASHAN, NASER, ABDOLLAHI ARPANAHI, ROSTAM, & SAYAD NEJAD, MOHAMMAD BAGHER. (2018). RANDOM REGRESSION GENETIC EVALUATION OF HOLSTEIN BULLS USING DIFFERENTTEST DAY RECORDS. JOURNAL OF ANIMAL PRODUCTION (JOURNAL OF AGRICULTURE), 20(3 ), 401-408. SID. https://sid.ir/paper/209105/en

Vancouver: Copy

ASHRAFIAN ALI, EMAM JOMEH KASHAN NASER, ABDOLLAHI ARPANAHI ROSTAM, SAYAD NEJAD MOHAMMAD BAGHER. RANDOM REGRESSION GENETIC EVALUATION OF HOLSTEIN BULLS USING DIFFERENTTEST DAY RECORDS. JOURNAL OF ANIMAL PRODUCTION (JOURNAL OF AGRICULTURE)[Internet]. 2018;20(3 ):401-408. Available from: https://sid.ir/paper/209105/en

IEEE: Copy

ALI ASHRAFIAN, NASER EMAM JOMEH KASHAN, ROSTAM ABDOLLAHI ARPANAHI, and MOHAMMAD BAGHER SAYAD NEJAD, “RANDOM REGRESSION GENETIC EVALUATION OF HOLSTEIN BULLS USING DIFFERENTTEST DAY RECORDS,” JOURNAL OF ANIMAL PRODUCTION (JOURNAL OF AGRICULTURE), vol. 20, no. 3 , pp. 401–408, 2018, [Online]. Available: https://sid.ir/paper/209105/en

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