Estimates of genetic and crossbreeding parameters for 305-day milk yield of Girolando cows

Daltro, Darlene dos Santos; Silva, Marcos Vinícius Gualberto Barbosa da; Gama, L. T.; Machado, Juliano Costa; Kern, Elisandra Lurdes; Campos, Gabriel Soares; Panetto, J. C. do C.; Cobuci, Jaime Araújo

doi:10.1080/1828051x.2019.1702110

Cited by 11 publications

(11 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…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

Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle

Daltro¹,

Padilha²,

Gama³

et al. 2021

Revista Brasileira De Zootecnia

Self Cite

View full text Add to dashboard Cite

Breeding and geneticsFull-length research article Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle ABSTRACT -The objective of this study was to estimate the breed, heterosis, and recombination effects on different components of the lactation curve of Girolando cattle. The dataset used consisted of 12,121 purebred cows of Holstein (H) and Gyr (G) breeds, and six H×G crossbred cows (Girolando). The model used presents random effects of herd and cow, regression coefficient associated with linear effect of proportion of H breed, regression coefficient associated with the linear effect of heterosis between H and G breeds, regression coefficient associated with the linear effect of recombination between H and G breeds, and random effect of residual. Dijkstra's (DJ), Nelder's (ND), Wilmink's (WL), and Wood's (WD) models were tested to fit production records of these different genetic groups. These models were then tested according to evaluation criteria of quality of fit (AIC, BIC, and RMSE), and the two best models (WD and WL) were chosen for estimation of 305-day milk yield (MY 305 ), peak yield, time to peak, and persistency of milk yield. The breed effect was significant for all traits and components of the lactation curve. The heterosis effect was significant for all traits, and was more significant for MY 305 (945.62±79.17 kg). Peak yield was the component of lactation curve that presented the most significant heterosis effect, partially explaining the heterosis effect (12 to 21%) found for MY 305 . The recombination effect was positive only for lactation period and time to peak of lactation in Girolando cows.

show abstract

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%

Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle

Daltro¹,

Padilha²,

Gama³

et al. 2021

Revista Brasileira De Zootecnia

Self Cite

View full text Add to dashboard Cite

show abstract

“…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%

The Potential of Using Temperate–Tropical Crossbreds and Agricultural by-Products, Associated with Heat Stress Management for Dairy Production in the Tropics: A Review

Michael

Cruz

Nor

et al. 2021

Animals

View full text Add to dashboard Cite

The demand and consumption of dairy products are expected to increase exponentially in developing countries, particularly in tropical regions. However, the intensification of dairy production to meet this increasing demand has its challenges. The challenges ranged from feed costs, resources, and their utilization, as well as the heat stress associated with rearing temperate–tropical crossbred cattle in the tropics. This article focused on key nutritional and environmental factors that should be considered when temperate–tropical crossbred cattle are used in the tropics. The article also describes measures to enhance the utilization of regional feed resources and efforts to overcome the impacts of heat stress. Heat stress is a major challenge in tropical dairy farming, as it leads to poor production, despite the genetic gains made through crossbreeding of high production temperate cattle with hardy tropical animals. The dependence on imported feed and animal-man competition for the same feed resources has escalated feed cost and food security concerns. The utilization of agricultural by-products and production of stable tropical crossbreds will be an asset to tropical countries in the future, more so when scarcity of feed resources and global warming becomes a closer reality. This initiative has far-reaching impacts in the tropics and increasingly warmer areas of traditional dairying regions in the future.

show abstract

“…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%

Single-Nucleotide Polymorphism Variations Associated With Specific Genes Putatively Identified Enhanced Genetic Predisposition for 305-Day Milk Yield in the Girolando Crossbreed

et al. 2021

View full text Add to dashboard Cite

Milk production phenotypes are the main focus of genetic selection in dairy herds, and although there are many genes identified as related to the biology of these traits in pure breeds, little is known about crossbreed animals. This study aimed to identify potential genes associated with the 305-day milk yield in 337 crossbreed Gir × Holstein (Girolando) animals. Milk production records were genotyped for 45,613 single-nucleotide polymorphisms (SNPs). This dataset was used for a genome-wide association study (GWAS) using the 305-day milk yield adjusted for the fixed effects of herd and year and linear and quadratic effects of age at calving (in days) and calving factor averaged per animal. Genes within the significant SNPs were retrieved from the Bos taurus ARS-UCD1.2 assembly (bosTau9) for gene ontology analysis. In summary, the GWAS identified 52 SNPs associated [p ≤ 10–4, false discovery rate (FDR) = 8.77%] with milk production, including NUB1 and SLC24A2, which were previously described as related to milk production traits in cattle. The results suggest that SNPs associated mainly with NUB1 and SLC24A2 could be useful to understand milk production in Girolando and used as predictive markers for selecting genetic predisposition for milk yield in Girolando.

show abstract

Estimates of genetic and crossbreeding parameters for 305-day milk yield of Girolando cows

Cited by 11 publications

References 24 publications

Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle

Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle

The Potential of Using Temperate–Tropical Crossbreds and Agricultural by-Products, Associated with Heat Stress Management for Dairy Production in the Tropics: A Review

Single-Nucleotide Polymorphism Variations Associated With Specific Genes Putatively Identified Enhanced Genetic Predisposition for 305-Day Milk Yield in the Girolando Crossbreed

Contact Info

Product

Resources

About