Hugo H. Montaldo
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View article: Changes over time in the genetic parameters of milk production and functional traits in a Holstein population
Changes over time in the genetic parameters of milk production and functional traits in a Holstein population Open
Changes over time in the genetic parameters for milk yield (MY), fat yield (FY), protein yield (PY), fat content (FC), protein content (PC), longevity (LONG), somatic cell score (SCS), calving interval (CI) and age at first calving (AFC) w…
View article: Uncovering the genetic basis of milk production traits in Mexican Holstein cattle based on individual markers and genomic windows
Uncovering the genetic basis of milk production traits in Mexican Holstein cattle based on individual markers and genomic windows Open
The objective of this study was to evaluate the proportion of genetic variance explained by single nucleotide polymorphism markers, individually or clustered in 1, 2, and 5 Mb windows, for milk yield, fat yield, protein yield, fat content,…
View article: Review of: "Heritability and Genetic Correlations of Growth Traits Among Inbred Population of Nigerian Chickens"
Review of: "Heritability and Genetic Correlations of Growth Traits Among Inbred Population of Nigerian Chickens" Open
View article: Fertilidad en vacas lecheras tratadas en la fase lútea temprana con un dispositivo intravaginal liberador de progesterona reutilizado
Fertilidad en vacas lecheras tratadas en la fase lútea temprana con un dispositivo intravaginal liberador de progesterona reutilizado Open
Probamos si el tratamiento en la fase lútea temprana con un dispositivo intravaginal liberador de progesterona (DIV) reutilizado incrementa el porcentaje de concepción (PC) en vacas lecheras. Se realizaron dos experimentos; en el primero, …
View article: Genotype × region and genotype × production level interactions in Holstein cows
Genotype × region and genotype × production level interactions in Holstein cows Open
The identification of the presence of genotype by environment interaction effects on important traits in Holstein cattle allows for the use of international genetic evaluations and a more efficient design of regional genetic evaluation pro…
View article: Genetic parameters for somatic cell score, milk yield and type traits in Nigerian Dwarf goats
Genetic parameters for somatic cell score, milk yield and type traits in Nigerian Dwarf goats Open
Objective: This study was conducted to estimate multi-trait genetic parameters for somatic cell score (SCS), milk yield and type traits in Nigerian Dwarf (ND) goats from the United States.Methods: Data from 1,041 ND goats in the United Sta…
View article: Evolution of genetic variability for growth-out survival rate in a selected population of Pacific white shrimp Penaeus (Litopenaeus) vannamei
Evolution of genetic variability for growth-out survival rate in a selected population of Pacific white shrimp Penaeus (Litopenaeus) vannamei Open
Estimates of trends for additivegenetic variance, heritability and additive geneticcoefficient of variation across years showed significantdepartures from linearity, suggesting the absence of adecline in the genetic variability.
View article: Relationships of conformation traits with somatic cell score in Nubian goats
Relationships of conformation traits with somatic cell score in Nubian goats Open
Records of 3716 Nubian goats from the United States (US) were analyzed to estimate relationships between fourteen conformation traits (CT) with lactation average somatic cell score (ASCS). To analyze ASCS, a mixed model was implemented. Li…
View article: Effect of harvest weight and its uniformity on survival in Litopenaeus vannamei reared in different systems
Effect of harvest weight and its uniformity on survival in Litopenaeus vannamei reared in different systems Open
View article: Heritability and genetic correlations for infectious hypodermal and hematopoietic necrosis virus load, body weight at harvest, and survival rate in Pacific white shrimp (<i>Litopenaeus vannamei</i>)
Heritability and genetic correlations for infectious hypodermal and hematopoietic necrosis virus load, body weight at harvest, and survival rate in Pacific white shrimp (<i>Litopenaeus vannamei</i>) Open
Heritability and genetic correlations for body weight at harvest size (BW), grow‐out survival (SU), and log‐transformed infectious hypodermal and hematopoietic necrosis virus (IHHNV) load (VL ln ) in Litopenaeus vannamei were estimated. Da…
View article: Genotype × environment interaction for fertility and milk yield traits in Canadian, Mexican and US Holstein cattle
Genotype × environment interaction for fertility and milk yield traits in Canadian, Mexican and US Holstein cattle Open
The objective of this study was to evaluate genotype × environment interaction (G×E) between Canada, the United States and Mexico for fertility and milk yield traits using genetic correlations between countries estimated from genetic evalu…
View article: Genetic parameters for milk yield and reproduction traits in the Chilean Dairy Overo Colorado cattle breed
Genetic parameters for milk yield and reproduction traits in the Chilean Dairy Overo Colorado cattle breed Open
The objective of this study was to estimate genetic parameters for milk production and reproduction traits using phenotypic and pedigree information from the Dairy Overo Colorado breed from southern Chile. Single- and multi-trait mixed mod…
View article: Corrigendum to “Linear and nonlinear genetic relationships between type traits and productive life in US dairy goats” (J. Dairy Sci. 100:1232–1245)
Corrigendum to “Linear and nonlinear genetic relationships between type traits and productive life in US dairy goats” (J. Dairy Sci. 100:1232–1245) Open
On page 1233 (second paragraph), the third sentence should read “Their study considered that the genetic trend for productive life at 72 mo could increase up to 38.3% per generation (with respect to direct selection) when one of these trai…
View article: Linear and nonlinear genetic relationships between type traits and productive life in US dairy goats
Linear and nonlinear genetic relationships between type traits and productive life in US dairy goats Open
Linear or nonlinear genetic relationships between productive life and functional productive life at 72 mo, with final score (SCO), stature, strength, dairyness (DAI), teat diameter, rear legs (side view), rump angle, rump width (RUW), fore…
View article: Análisis genético para vida productiva en ganado Holstein de México
Análisis genético para vida productiva en ganado Holstein de México Open
Se usó la metodología de análisis de supervivencia con un modelo de riesgos proporcionales de Weibull para estudia la duración de vida productiva funcional (DVPF) de ganado Holstein en México, usando un modelo padre-abuelo materno con el s…
View article: Análisis genético para vida productiva en ganado Holstein de México
Análisis genético para vida productiva en ganado Holstein de México Open
"Se usó la metodología de análisis de supervivencia con un modelo de riesgos proporcionales de Weibull para estudiar la duración de vida productiva funcional (DVPF) de ganado Holstein en México, usando un modelo padre-abuelo materno con el…
View article: Genetic improvement of Pacific white shrimp [Penaeus (Litopenaeus) vannamei]: perspectives for genomic selection
Genetic improvement of Pacific white shrimp [Penaeus (Litopenaeus) vannamei]: perspectives for genomic selection Open
The uses of breeding programs for the Pacific white shrimp [Penaeus (Litopenaeus) vannamei] based on mixed linear models with pedigreed data are described. The application of these classic breeding methods yielded continuous progress of gr…
View article: Effect of reference population size and available ancestor genotypes on imputation of Mexican Holstein genotypes
Effect of reference population size and available ancestor genotypes on imputation of Mexican Holstein genotypes Open
The effects of reference population size and the availability of information from genotyped ancestors on the accuracy of imputation of single nucleotide polymorphisms (SNP) were investigated for Mexican Holstein cattle. Three scenarios for…
View article: Genetic differentiation of Mexican Holstein cattle and its relationship with Canadian and U.S. Holsteins
Genetic differentiation of Mexican Holstein cattle and its relationship with Canadian and U.S. Holsteins Open
The Mexican Holstein (HO) industry has imported Canadian and US (CAN + USA) HO germplasm for use in two different production systems, the conventional (Conv) and the low income (Lowi) system. The objective of this work was to study the gen…