Genetic study of important economic traits in Hariana cattle

Abstract

The present investigation was undertaken to access first lactation total milk yield, first lactation length, productive life, herd life and total life. Breeding information were used from the history sheet registers and herd inventory registers of Hariana cattle maintained at DUVASU farm, Mathura and Babugarh farm, Hapur. The data of productive animals with date of calving from 1966 to 2018 and date of birth from 1962 to 2013 were collected for the study. The overall averages for FLTMY, FLL, PL, HL and TL were estimated as 971.2±16.9 litres, 328.2±3.8 days, 2019.1±42.1 days, 2251.8±43.9 days and 3915.7±44.2 days, respectively. The overall least-squares mean of 961.3±24.1 litres, 331.6±5.9 days, 2285.2±64.9 days, 2489.9±69.1 days and 4219.4±70.0 days was observed respectively for the above traits. Season of calving had significant effect on first lactation length and period of calving had significant effect on first lactation total milk. Farm, period of birth and AFC age group had significant effect on PL, HL and TL of Hariana cattle. The heritability for FLTMY and FLL was moderate to high in Hariana cattle.

Evaluation of Production Traits in Gramapriya Female Line Chicken Under Intensive System of Rearing

“…The heritability estimates for combined sire and dam components were 0.277 ± 0.110, 0.307 ± 0.113, 0.391 ± 0.120 for egg production up to 40, 52 and 64 weeks of age. Similar values for EP 40 were reported in IWK [39]. Lower heritability estimates than the present study was reported by some authors [32,35,40], whereas higher heritability values were obtained in RIR [41].…”

“…The heritability estimates for egg production up to 52 weeks was in close agreement with estimates reported by authors [31,35,42], while heritability estimates for EP 64 were found to be higher when compared with values in Naked Neck chicken [13]. Egg weights exhibited moderate heritability ranging from 0.459 ± 0.14 to 0.575 ± 0.15 and these values were found to be in a closer range reported in white leghorn control [38,39] while other authors reported lower value than the present study. Variations in egg weight may be due to breed differences, type of birds and bodyweight of birds [35].…”

“…This may be revealed that birds heavier at early age were also heavier at later age due to the pleiotropic actions of genes controlling bodyweights [26]. The correlation between BW 40 and EW 40 was similar to results obtained by in control group [36,39] whereas, higher values were obtained in Dwarf chicken [14] and in Naked Neck [13], while lower values are reported in IWI [36,38]. There was a positive association between body weights and egg weights as age advanced, heavier birds laid heavier eggs.…”

“…There was a positive association between body weights and egg weights as age advanced, heavier birds laid heavier eggs. The correlation coefficient between BW 40 and EP 40 was similar in IWK [39], while lower values are obtained for IWI [38] and IWK [36].…”

The Influence of Lipid Metabolism Genes and the Age of the First Calving on the Dairy Productivity of Tatarstan-Type Cows

“…Ключевые слова: корова, возраст первого отёла, молочная продуктивность, ген OLR1, DGAT1, LEP. на подготовку коров до продуктивной жизни, увеличивает ежегодный генетический прирост и увеличивает среднюю продуктивную жизнь животного [11]. Наблюдалась слабо позитивная корреляция между возрастом первого отёла и удоем за лактацию у помесных молочных коров в Эфиопии [12].…”