2019
DOI: 10.1080/1828051x.2019.1702110
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Estimates of genetic and crossbreeding parameters for 305-day milk yield of Girolando cows

Abstract: The objective of this work was to evaluate the effects of breed and heterosis on the estimates of genetic parameters of 305-day milk yield (305MY), by fitting milk yield data to the Wood, Mixed Log, Morgan, and Wilmink non-linear models. A total of 258,891 test-day milk yield records of 37,965 Holstein (H), Gyr (G), and Girolando (1/2 H, 1/4 H, 3/4 H, 3/8 H, 5/8 H and 7/8 H genetic groups) cows from 1840 herds were collected in the state of Minas Gerais, Brazil, in the period of 1998 to 2014. The pedigree file… Show more

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Cited by 13 publications
(13 citation statements)
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“…Penasa et al (2010b) estimated 477 kg more milk production for animals resulting from crossbreeding between Holstein and Jersey when compared with their purebred parents; they attributed this result to specific heterosis effects. Daltro et al (2020) estimated 1,112.73 kg more milk production for genetic group 1/2H of Girolando cows in the first lactation when compared with their purebred parents, due to specific heterosis effects.…”
Section: Breed Heterosis and Recombination Effectsmentioning
confidence: 99%
See 1 more Smart Citation
“…Penasa et al (2010b) estimated 477 kg more milk production for animals resulting from crossbreeding between Holstein and Jersey when compared with their purebred parents; they attributed this result to specific heterosis effects. Daltro et al (2020) estimated 1,112.73 kg more milk production for genetic group 1/2H of Girolando cows in the first lactation when compared with their purebred parents, due to specific heterosis effects.…”
Section: Breed Heterosis and Recombination Effectsmentioning
confidence: 99%
“…In Brazil, the heterosis effect is important to increase 305-day milk yield in Girolando cattle (Facó et al, 2002(Facó et al, , 2008Daltro et al, 2020). However, further studies are needed, mainly on other traits of economic importance, such as components of the lactation curve.…”
Section: Introductionmentioning
confidence: 99%
“…It was reported in South East Asia, Australian Frisian × Sahiwal (3rd generation) can produce a total milk yield per lactation of 1978 kg [ 36 ], Thai native × Frisian of 50% and 75% Frisian yielded 2009 kg and 2516 kg, respectively [ 12 ] and Holstein–Friesian × Vietnamese local yellow cattle produced 1168 kg yield [ 37 ]. In Latin America, Holstein × Gyr of 50%, 37.5%, and 87.5% Holstein was observed to produce 5118 kg, 4569 kg and, 5211 kg of milk yield, respectively [ 38 ]. In South Asia, it was found that Holstein–Friesian × Sahiwal and Jersey × Red Sindhi yielded 2381 kg and 2676 kg of milk, respectively [ 39 , 40 ].…”
Section: Temperate–tropical Crossbreeding Endeavors In Developing Countries In the Tropicsmentioning
confidence: 99%
“…Red Sindhi breed from South Asia produced 2369 kg [ 46 ], whereas, in East Africa, the Ethiopian Boran breed yielded 582 kg of milk yield per lactation [ 41 ]. In Latin America, the Brazilian Gyr and Guzerat breeds have produced 4256 kg and 1783 kg, respectively [ 38 , 47 ], and in sub-Saharan Africa, the Butana breed yielded 1662 kg of milk yield [ 48 ]. Most indigenous breeds can yield between 1200 kg to 2000 kg per lactation in the various tropical regions.…”
Section: Temperate–tropical Crossbreeding Endeavors In Developing Countries In the Tropicsmentioning
confidence: 99%
“…Despite the large number of genes previously described as related to the complex trait of milk production in pure breeds, such as Holstein and Jersey cows, very little has been reported in crossbreeds (Canaza-Cayo et al, 2014). Still, the identification of single-nucleotide polymorphism (SNP) affecting milk yield in tropical cattle is of paramount importance to accelerate the rate of genetic change in the dairy industry in developing countries (Daltro et al, 2019).…”
Section: Introductionmentioning
confidence: 99%