Parameter Estimates for Feed Intake and Production in First Lactation Using Milk Recording Data

Moore, Robert K.; Kennedy, B. W.; Schaeffer, L.R.; Moxley, J.E.

doi:10.3168/jds.s0022-0302(90)78736-x

Cited by 14 publications

(11 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Genetic parameter estimates from an animal model may be slightly more accurate than from a sire model because relationships among animals are more comprehensively accounted for in an animal model analysis. The heritability estimates in the present study are in close agreement with an earlier study by Moore et al (1990) using feed intake data from Valacta herds. They reported heritability estimates ranging from 0.10 to 0.16 for total energy intake during early and late lactations in the first lactation Holsteins.…”

Section: Heritability Estimatessupporting

confidence: 82%

“…The BCS showed typical curve (opposite to typical lactation curve) for the sampled population (Fig. 5) which is comparable to earlier reports on the first lactation Canadian Holstein (Bastin et al 2010;Moore et al 1990) and US Holstein cows (Vallimont et al 2010). It was observed that BCS was high in the beginning of lactation and showed decreasing trend up to 60-70 DIM probably due to the effect of NEB (Goff and Horst 1997).…”

Section: Effect Of Age At Calvingsupporting

confidence: 78%

See 1 more Smart Citation

Genetic and phenotypic associations of type traits and body condition score with dry matter intake, milk yield, and number of breedings in first lactation Canadian Holstein cows

Bilal

Cue²,

Hayes³

2016

Can. J. Anim. Sci.

View full text Add to dashboard Cite

The objective of the present study was to estimate genetic parameters of milk yield (MY), intake traits, type traits, body condition score (BCS), and number of breedings (NOB) in first lactation Canadian Holsteins with a focus on the possibility of using type traits as an indicator of feed intake. Data were obtained from the Canadian Dairy Network and Valacta. A mixed linear model was fitted under REML for the statistical analysis. The multivariate (five traits) model included the fixed effects of age at calving, stage of lactation, and herdround-classifier for type traits; age at calving, stage of lactation, and herd-year-season of calving (HYS) for BCS; age at calving and HYS for MY, feed intake, and NOB. Animal and residual effects were fitted as random effects for all traits. Estimates of heritabilities for MY, dry matter intake (DMI), angularity, body depth, stature, dairy strength, final score, BCS, and NOB were 0.41, 0.13, 0.24, 0.30, 0.50, 0.30, 0.22, 0.20, and 0.02, respectively. Genetic correlations between type traits and DMI ranged from 0.16 to 0.60. Results indicate that type traits appear to have the potential to predict DMI as a combination/index of two or more traits.Key words: milk yield, feed intake, type traits, dairy cattle.Résumé : L'objectif de la présente étude était d'estimer les paramètres génétiques de production de lait (MY-« milk yield »), des caractéristiques de prise alimentaire, des caractères de conformation, de cote de condition de chair (BCS-« body condition score ») et le nombre de saillies (NOB-« number of breedings ») chez les vaches holsteins canadiennes à la première lactation avec un accent sur la possibilité d'utiliser les caractères de conformation comme indicateurs de prise alimentaire. Les données ont été obtenues du Réseau laitier canadien (« Canadian Dairy Network ») et de Valacta. Un modèle linéaire mixte a été traité sous REML pour l'analyse statistique. Le modèle multivarié (cinq caractères) comprend les effets fixes de l'âge au premier vêlage, le stade de lactation et le classificateur de troupeau complet pour les caractères de conformation; âge au vêlage, stade de lactation ainsi que troupeauannée-saison (HYS-« herd-year-season ») de vêlage pour la BCS; âge au vêlage et HYS pour la production de lait, prise alimentaire et NOB. L'animal et les effets résiduels ont été réglés comme effets aléatoires pour tous les caractères. Les estimations d'héritabilités pour la production de lait, ingestion des matières sèches (DMI-« dry matter intake »), angularité, profondeur de corps, stature, puissance laitière, cote finale, BCS et NOB étaient 0,41, 0,13, 0,24, 0,30, 0,50, 0,30, 0,22, 0,20 et 0,02, respectivement. Les corrélations génétiques entre les caractères de conformation et la DMI variaient entre 0,16 et 0,60. Les résultats indiquent que les caractères de conformation semblent avoir un potentiel pour la prévision de la DMI en tant que combinaison/indice de deux caractères ou plus. [Traduit par la Rédaction] Mots-clés : production de lait, prise alimentaire...

show abstract

Section: Heritability Estimatessupporting

confidence: 82%

Section: Effect Of Age At Calvingsupporting

confidence: 78%

Genetic and phenotypic associations of type traits and body condition score with dry matter intake, milk yield, and number of breedings in first lactation Canadian Holstein cows

Bilal

Cue²,

Hayes³

2016

Can. J. Anim. Sci.

View full text Add to dashboard Cite

show abstract

“…In the literature, wide ranges of heritability estimates have been reported for BW (0.23 to 0.60) and BCS (0.08 to 0.60), which varied with stage of lactation (Moore et al, 1990;Bewley and Schutz, 2008;Vallimont et al, 2010), and our estimates were within the range of previous estimates. Difference between our results and those available in the literature may be due to the average of BW and BCS over the 301 days lactation period being used in our study, rather than within a specific time period used in previous studies.…”

Section: Heritabilitiessupporting

confidence: 81%

“…Daily average of LFCM, LDMI, LAEI and ABW were 32.2 (kg), 21.08 (kg), 37.8 (Mcal) and 603.28 (kg), respectively. The greater average LFCM and LDMI in this study compared to other Canadian studies (Moore et al, 1990;Parke et al, 1999) could be attributed to infrequent measurement (once per month) in this study and genetic and management improvements in the last 23 years. This discrepancy at least partially supported by the 104 kg/cow per day increase in milk production from 1991 to 2013 in Holsteins by Dairy Herd Improvement Program (2013).…”

Section: Resultscontrasting

confidence: 42%

Genetic and phenotypic correlations among feed efficiency, production and selected conformation traits in dairy cows

Manafiazar

Goonewardene

Miglior

et al. 2016

Animal

View full text Add to dashboard Cite

The difficulties and costs of measuring individual feed intake in dairy cattle are the primary factors limiting the genetic study of feed intake and utilisation, and hence the potential of their subsequent industry-wide applications. However, indirect selection based on heritable, easily measurable, and genetically correlated traits, such as conformation traits, may be an alternative approach to improve feed efficiency. The aim of this study was to estimate genetic and phenotypic correlations among feed intake, production, and feed efficiency traits (particularly residual feed intake; RFI) with routinely recorded conformation traits. A total of 496 repeated records from 260 Holstein dairy cows in different lactations (260, 159 and 77 from first, second and third lactation, respectively) were considered in this study. Individual daily feed intake and monthly BW and body condition scores of these animals were recorded from 5 to 305 days in milk within each lactation from June 2007 to July 2013. Milk yield and composition data of all animals within each lactation were retrieved, and the first lactation conformation traits for primiparous animals were extracted from databases. Individual RFI over 301 days was estimated using linear regression of total 301 days actual energy intake on a total of 301 days estimated traits of metabolic BW, milk production energy requirement, and empty BW change. Pair-wise bivariate animal models were used to estimate genetic and phenotypic parameters among the studied traits. Estimated heritabilities of total intake and production traits ranged from 0.27 ± 0.07 for lactation actual energy intake to 0.45 ± 0.08 for average body condition score over 301 days of the lactation period. RFI showed a moderate heritability estimate (0.20 ± 0.03) and non-significant phenotypic and genetic correlations with lactation 3.5 % fat-corrected milk and average BW over lactation. Among the conformation traits, dairy strength, stature, rear attachment width, chest width and pin width had significant (P < 0.05) moderate to strong genetic correlations with RFI. Combinations of these conformation traits could be used as RFI indicators in the dairy genetic improvement programmes to increase the accuracy of the genetic evaluation of feed intake and utilisation included in the index.

show abstract

“…Mean energy intakes and 4% FCM yield were significantly higher than in Moore et al (1990), who also analyzed data from Quebec DHAS, although from a shorter time period (1979 to 1986). The higher mean values for grain energy intake (443 Mcal yr -1 ), total energy intake (1336 Mcal yr -1 ) and FCM (1,202 kg) in the present study may be attributable to the inclusion of records from unofficial tests by Moore et al (1990).…”

Section: Means and Standard Deviationsmentioning

confidence: 92%

Genetic and phenotypic parameter estimates between production, feed intake, feed efficiency, body weight and linear type traits in first lactation Holsteins

Kennedy¹,

Dekkers²,

Moore³

et al. 1999

Can. J. Anim. Sci.

View full text Add to dashboard Cite

L. 1999. Genetic and phenotypic parameter estimates between production, feed intake, feed efficiency, body weight and linear type traits in first lactation Holsteins. Can. J. Anim. Sci. 79: 425-431. Production and feed intake data on 36 115 first lactation Holstein cows obtained from Quebec Dairy Herd Analysis Service were combined with conformation data from the Holstein Association of Canada to estimate genetic correlations among production, energy intake, and conformation traits. Traits considered were 305-d milk yield, 305-d grain energy and total energy intake, feed efficiency (fat corrected milk yield/total energy intake), body weight at calving, capacity, size, stature, rump width and final score. Genetic and phenotypic parameters were estimated using Restricted Maximum Likelihood based on two-trait animal mixed model analyses. The model contained fixed effects of herd-year, season of calving, age of calving, sire group and a random animal genetic effect. Estimates of heritability were within the published range for all traits. Of the conformation traits examined, capacity, size and stature had the highest correlations with body weight, with phenotypic correlations between 0.36 and 0.43, and genetic correlations between 0.61 and 0.79. Feed efficiency was negatively correlated to all body size measures, both phenotypically (-0.01 to -0.29) and genetically (-0.31 to -0.53), but most significantly with body weight, capacity, size, and stature. Fat-corrected milk yield showed negligible phenotypic and low to moderately negative genetic (-0.07 to -0.29) correlations with body weight and related type traits. Total energy intake was positively related to all measures of body size, most notably body weight, while grain energy intake had moderately negative genetic correlations (-0.20 to -0.40) with the same body size traits. Because of their detrimental relationships with feed efficiency, negative selection emphasis should be placed on body weight and the related type traits capacity, size and stature. Capacity, size and stature are of moderate utility when selecting indirectly for body weight, total energy intake and feed efficiency.Key words: Dairy cattle, genetics, production, conformation, feed efficiency Parke, P., Jr., Kennedy, B. W., Dekkers, J. C. M., Moore, R. K. et Jairath, L. 1999. Calculs des rapports génétiques et phéno-typiques entre la production, l'ingéré alimentaire, l'indice de consommation, le poids corporel et les caractères de conformation chez des vaches Holstein primipares. Can. J. Anim. Sci. 79: 425-431. Nous avons combiné à des données sur la conformation fournies par l'Association Holstein du Canada les relevés de production et de consommation fourragère obtenus du PATLQ sur 36 115 vaches Holstein primipares. L'objet était de calculer les corrélations génétiques entre les caractères de production d'ingestion alimentaire et de conformation. Les paramètres considérés étaient le rendement laitier, l'ingéré énergétique total et l'ingéré d'énergie céréalière à 305 j, l'indice de conversion (...

show abstract

Parameter Estimates for Feed Intake and Production in First Lactation Using Milk Recording Data

Cited by 14 publications

References 23 publications

Genetic and phenotypic associations of type traits and body condition score with dry matter intake, milk yield, and number of breedings in first lactation Canadian Holstein cows

Genetic and phenotypic associations of type traits and body condition score with dry matter intake, milk yield, and number of breedings in first lactation Canadian Holstein cows

Genetic and phenotypic correlations among feed efficiency, production and selected conformation traits in dairy cows

Genetic and phenotypic parameter estimates between production, feed intake, feed efficiency, body weight and linear type traits in first lactation Holsteins

Contact Info

Product

Resources

About