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بررسی اثر ضریب همخونی بر تولید شیر، تعداد روزهای شیردهی و سن نخستین زایش گاوهای شیری ایران با استفاده از رگرسیون کوآنتایل | ||
| پژوهش های علوم دامی (دانش کشاورزی) | ||
| دوره 30، شماره 2، شهریور 1399، صفحه 25-39 اصل مقاله (1.22 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22034/as.2020.11452 | ||
| نویسندگان | ||
| راضیّه واحدی درمیان1؛ سیّد همایون فرهنگ فر* 1؛ محمّدباقر صیّادنژاد* 2 | ||
| 1علوم دام دانشگاه بیرجند | ||
| 2مرکز اصلاح نژاد دام و بهبود تولیدات دامی کرج | ||
| چکیده | ||
| زمینه مطالعاتی: همخونی(درونزادآوری) که بهطور کلی به آمیزش حیوانات خویشاوند با یکدیگر گفته میشود، سبب افزایش فراوانی ژنوتیپهای هموزیگوت و کاهش فراوانی ژنوتیپ هتروزیگوت در جمعیّت میگردد. چشمگیرترین پیامد همخونی، کاهش فنوتیپی صفاتی است که با کارآیی فیزیولوژیکی و ظرفیّت تولیدمثلی در ارتباط میباشند. هدف: این تحقیق با هدف برآورد اثر همخونی بر صفات تولید شیر کل دورهی شیردهی، تولید شیر 305 روز و دوبار دوشش، متوسّط تولید شیر روزانه، تعداد روز شیردهی، و سن نخستین زایش در گاوهای شیری ایران با استفاده از روش آماری رگرسیون کوآنتایل انجام شد. روش کار: تعداد 580802 رکورد متعلّق به 580802 رأس گاو شیری شکم اوّل توزیعیافته در 1185 گله (در 20 استان کشور) و زایش کرده طی سالهای 1370 تا 1394 مورد استفاده قرار گرفت. ضریب همخونی حیوانات در کل شجره، بهوسیله نرمافزار CFC محاسبه شد. برازش مدل رگرسیون کوآنتایل بر هر یک از صفات مذکور توسّط نرمافزار SAS اجرا گردید. نتایج: یافتهها نشان داد هنگامی که ضریب همخونی گاو افزایش مییابد، میزان اثرگذاری آن بر چندکهای هر یک از صفات، متفاوت بوده و یکسان نیست. عمدهی ضرایب تابعیّت برآورد شده (در چندکهای مختلف) بهلحاظ آماری معنیدار بودند (05/0p <). بر اساس برازش مدل رگرسیون کوآنتایل و میانگین ضرایب تابعیّت در چندکهای مختلف صفات، هنگامی که یک درصد ضریب همخونی افزایش یابد، تولید شیر کل دورهی شیردهی، تولید شیر 305 روز و دوبار دوشش، متوسّط تولید شیر روزانه، تعداد روز شیردهی، و سن نخستین زایش بهترتیب 5/5- (کیلوگرم)، 6/2- (کیلوگرم)، 18- (گرم)، 35/0 (روز) و 30/0 (روز) تغییر میکند. نتیجهگیری نهایی: چندکهایبرخی صفات تولیدی و تولیدمثلی گاوهای شیری ایران تحت تأثیر یکسان همخونی قرار ندارند، و لذا توصیّه میشود در تحقیقات آینده از روش رگرسیون کوآنتایل برای بررسی اثر پدیدهی مزبور بر سایر صفات مهم اقتصادی نیز استفاده گردد. | ||
| کلیدواژهها | ||
| صفات تولید و تولیدمثل؛ همخونی؛ رگرسیون چندکی؛ گاو شیری | ||
| مراجع | ||
|
Amirzadeh Shomali H, 2012. Investigating the effects of inbreeding on some traits associated with production of Sarabi cow.MSc Thesis, Faculty of Agriculture, University of Tabriz. AtashiH, Sayyadnejad MB and Asaadi A, 2011. The effect of inbreeding on lactation performance in Holstein cows of Iran. Iranian Journal of Applied Animal Science 1:253-256. Armbruster P and Reed DH, 2005. Inbreeding depression in benign and stressful environments. Heredity 95:235-42. Barjasteh SH, Shadparvar AA and Mirhosseini SZ, 2012. Effect of inbreeding on economic performance of Iranian Holsteins. Journal of Livestock Research. 1:9-18. Behmaram R, Esrafili Tazeh Kandemohammadyieh M, Hedayat Evrigh N, 2017. The effect of inbreeding on some productive and reproductive traits of Holstein cows in Moghan Agro-Industrial Company. Research on Animal Production 18:168-176 (In Persian). Berg P, 2003. EVA version 1.4. Evolutionary algorithm for mate selection. User's guide. Danish Institute of Agricultural Sciences, Foulum, Denmark. Biffani S, Samoré AB and Canavesi F, 2002. Inbreeding depression for production, reproduction and functional traits in Italian Holstein cattle. Proc. 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, Pp. 183-186. Bijlsma R, Bundgaard J and Boerema AC, 2000. Does inbreeding affect the extinction risk of small populations? Predictions from Drosophila. Journal of Evolutionary Biology 13:502-514. Bijlsma R, Bundgaard J and Van Putten WF, 1999. Environmental dependence of inbreeding depression and purging in Drosophila melanogaster. Journal of Evolutionary Biology 12:1125-1137.
Bijlsma R, Westerhof MDD, Roekx LP and Pen I, 2010. Dynamics of genetic rescue in inbred Drosophila melanogaster populations. Conservation Genetics 11:449-462.
Casanova C, Hagger C and Kuenzi N, 1992. Inbreeding in Swiss Braunvieh and its influence on breeding values predicted from a repeatability animal model. Journal of Dairy Science 75:1119-1126.
Chen C 2005. An Introduction to Quantile Regression and the QUANTREG Procedure. SUGI 30, Statistics and Data Analysis, Paper 213-30, Pp. 1-24.
Croquet C, Mayeres P, Gillon A, Vanderick S and Gengler N, 2006. Inbreeding depression for global and partial economic indexes, production, type, and functional traits. Journal of Dairy Science 89:2257-2267.
Demontis D, Pertoldi C, Loeschcke V, Mikkelsen K, Axelsson T and Kristensen TN, 2009. Efficiency of selection, as measured by single nucleotide polymorphism variation, is dependent on inbreeding rate in Drosophila melanogaster. Molecular Ecology 18:4551-4563.
Derose MA and Roff DA, 1999. A comparison of inbreeding depression in life-history and morphological traits in animals. Evolution 53:1288-1292.
Faraji-Arough H, Aslaminejad AA and Farhangfar H, 2011. Estimation of genetic parameters and trends for age at first calving and calving interval in Iranian Holstein cows. Journal of Research in Agricultural Science 7:79-87.
Farhangfar H and Naeemipour Younesi H, 2007. Estimation of Genetic and Phenotypic Parameters for Production and Reproduction Traits in Iranian Holsteins. Journal of Science and Technology of Agriculture and Natural Resources 11:431-441 (In Persian).
Fioretti M, Rosati A, Pieramati C and Van Vleck LD, 2002. Effect of including inbreeding coefficients for animal and dam on estimates of genetic parameters and prediction of breeding values for reproductive and growth traits of Piedmontese cattle. Livestock Production Science 74:137-145.
Filho JCR, Verneque RDS, Torres RDA, Lopez PS, Raidan FSS and Toral FLB, 2015. Inbreeding on productive and reproductive traits of dairy Gyr cattle. Revista Brasileira de Zootecnia 44:174-179.
Fleming A, Abdalla EA, Maltecca C and Baes CF, 2018. Invited review: Reproductive and genomic technologies to optimize breeding strategies for genetic progress in dairy cattle. Archives Animal Breeding 61:43-57.
Gholambabaeian MM, Rashidi A, Razmkabir M and Mirzamohammadi E, 2012. Inbreeding coefficient estimate and its effects on pre-weaning traits in Moghani sheep. The 5th National Congress on Animal Science. Isfahan University of Technology Pp. 71-75 (In Persian).
Gholizadeh S, Ansari Mahyari S, Riasi A and Rokouei M, 2013. Estimation of inbreeding coefficient and its effect on some reproductive traits of dairy cattle herds. Iranian Journal of Animal Science Research 5:251-256 (In Persian).
González-Recio O, López de Maturana E and Gutiérrez JP, 2007. Inbreeding depression on female fertility and calving ease in Spanish dairy cattle. Journal of Dairy Science 90:5744-5752.
Hudson GF and Van Vleck LD, 1984. Inbreeding of artificially bred dairy cattle in the Northeastern United States. Journal of Dairy Science 67:161-170.
Hodges JTL, McGillivray BJ, Hiley PG and Ellis S, 1979. Inbreeding levels and their effect on milk, fat and calving interval in Holstein-Friesian cows. Canadian Journal of Animal Science Pp.153-158.
Khalaj Zadeh S, 2013. Genetic parameters estimation of age at first calving and its effect on productive traits of Holstein dairy cows. Animal Science Journal (Pajouhesh & Sazandegi) 103:15-24 (In Persian).
Koenker R, and Bassett GW, 1978. Regression Quantiles. Econometrica 46:33-50.
Kristensen TN and Sørensen AC, 2005. Inbreeding lessons from animal breeding, evolutionary biology and conservation genetics. Journal of Animal Science 80:121-133.
Kristensen TN, Pedersen KS, Vermeulen CJ and Loeschcke V, 2010. Research on inbreeding in the ‘omic’ era. Trends in Ecology and Evolution 25:44-52.
Kristensen TN, Dahlgaard J and Loeschcke V, 2003. Effects of inbreeding and environmental stress on fitness using Drosophila buzzatii as a model organism. Conservation Genetics 4:453-465.
Leberg PL and Firmin BD, 2008. Role of inbreeding depression and purging in captive breeding and restoration programmes. Molecular Ecology. 17:334-343.
Liao W and Reed DH, 2009. Inbreeding environment interactions increase extinction risk. Animal Conservation 12:54-61.
Mendes Malhado CH, Mendes Malhado AC, Carneiro PLS, Ramos AA, Carrillo JA and Pala A, 2013. Inbreeding depression on production and reproduction traits of buffaloes from Brazil. Journal of Animal Science 84:289-295.
Miglior F, Szkotnicki B and Burnside EB, 1992. Analysis of levels of inbreeding and inbreeding depression in Jersey cattle. Journal of Dairy Science 75:1112-1118.
Mikkelsen K, Loeschcke V and Kristensen TN, 2010. Trait specific consequences of fast and slow inbreeding: Lessons from captive populations of Drosophila melanogaster. Conservation Genetics 11:479-488.
Mirzamohamadi E and Rashidi A, 2013. Estimate of (co)variance components and effects of inbreeding on production traits in Holstein cows at hot region of Iran. Animal Science Journal (Pajouhesh and sazandegi.( 100:45-52.
Nickerson SC, 1999. Milk Production: Factors affecting milk composition. In book: milk quality, edited by Harding F, Aspen Publishers, Inc. Gaithersburg, Maryland, Aspan, First edition. Pp. 3-24.
Nilforooshan MA and Edriss MA, 2004. Effect of age at first calving on some productive and longevity traits in Iranian Holsteins of the Isfahan province. Journal of Dairy Science 87:2130-2135.
Panetto JCC, Gutiérrez JP, Ferraz JBS, Cunha DG and Golden BL, 2010. Assessment of inbreeding depression in a Guzerat dairy herd: Effects of individual increase in inbreeding coefficients on production and reproduction. Journal of Dairy Science 93:4902-4912.
Parland MS, Kearney JF, Rath M and Berry DP, 2007. Inbreeding effects on milk production, calving performance, fertility, and conformation in Irish Holstein-Friesians. Journal of Dairy Science 90:4411-4419.
Pedersen KS, Kristensen TN and Loeschcke V, 2005. Effects of inbreeding and rate on inbreeding in Drosophila melanogaster-Hsp70 expression and fitness. Journal of Evolutionary Biology 18:756-762
Reed DH, Lowe EH, Briscoe DA and Frankham R, 2003. Fitness and adaptation in a novel environment: effect of inbreeding, prior environment, and lineage. Evolution 57:1822-1828.
Reed DH, Nicholas AC and Stratton GE, 2007. Genetic quality of individuals impacts population dynamics. Animal Conservation 10:275-283.
Roff DA, 1998. Effects of inbreeding on morphological and life history traits of the sand cricket, Gryllus firmus. Heredity 81:28-37.
Rokouei M, Vaez Torshizi R, Moradi Shahrbabak M, Sargolzaei M and Sorensen AC, 2010. Monitoring inbreeding trends and inbreeding depression for economically important traits of Holstein cattle in Iran. Journal of Dairy Science 93:3294–3302.
Sargolzaei M, Iwaisaki H and Colleau JJ, 2006. CFC: A tool for monitoring genetic diversity. Proceedings of 8th World Congress on Genetics Applied to Livestock Production, 13-18 Aug. Belo Horizonte. Minas Gerais, Brazil, Pp. 27-28.
Shahdadi AR, Hassani S, Saghi DA, Ahani Azari M, Eghbal AR and Rahimi A, 2014. Estimation of genetic parameters of first lactation production and reproduction traits in Iranian Holstein dairy cows. Journal of Ruminant Research 1:109-126 (In Persian).
Smith LA, Cassel BG and Pearson RE, 1998. The effect of inbreeding on lifetime performance of dairy cattle. Journal of Dairy Science. 81:2729-37.
Swindell WR and Bouzat JL, 2006. Selection and inbreeding depression: effects of inbreeding rate and inbreeding environment. Evolution 60:1014-1022.
Vandewoestijne S, Schtickzelle N and Baguette M, 2008. Positive correlation between genetic diversity and fitness in a large, well-connected metapopulation. BMC Biology 46:1-11.
Whitlock MC, 2002. Selection, load and inbreeding depression in a large metapopulation. Genetics 160:1191-1202.
Wakchaure R and Ganguly S, 2015. Inbreeding, its effects and applications in animal genetics and breeding: A review. International Journal of Emerging Technology and Advanced Engineering 5:73-76.
Wiggans GR, VanRaden PM and Zuurbier J, 1995. Calculation and use of inbreeding coefficients for genetic evaluation of United States dairy cattle. Journal of Dairy Science 78:1584-1590.
Wright LI, Tregenza T and Hosken DJ, 2008. Inbreeding, inbreeding depression and extinction. Conservation Genetics 9:833-843.
Young CW, Tyler WJ, Freeman AE, Voelker HH, McGilliard LD and Ludwick TM, 1969. Inbreeding investigations with dairy cattle in the North Central region of the United States. Agricultural Experiment Station, University of Minnesota, Technical Bulletin 266, Pp. 3-15.
Yavarifard R, Ghavi Hossein-Zadeh N and Shadparvar AA, 2014. Population genetic structure analysis and effect of inbreeding on body weights at different ages in Iranian Mehraban sheep. Journal of Animal Science and Technology 56:1-9.
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