References of "Prandi, A"
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See detailDexamethasone Ester Treatment Alters Insulin-Like Growth Factor-I, Its Binding Proteins And Thyroid Status In Finishing Calves
Bertozzi, C.; Portetelle, Daniel ULiege; Massart, Serge et al

in Canadian Journal of Animal Science (2000), 80(2),

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See detailCandidate gene markers associated with somatotropic axis and milk selection
Parmentier, I.; Portetelle, Daniel ULiege; Gengler, Nicolas ULiege et al

in Domestic Animal Endocrinology (1999), 17(2-3), 139-148

One of the obstacles to progress in dairy cattle selection is that milk production traits are only expressed after the first calving. However, the use of the quantitative trait loci (QTL) technology will ... [more ▼]

One of the obstacles to progress in dairy cattle selection is that milk production traits are only expressed after the first calving. However, the use of the quantitative trait loci (QTL) technology will improve the efficiency of dairy industry with a positive image for the consumers. QTL are part of the genome showing a preponderant action and explaining the major part of variation of the trait production. At the present time, the two major strategies developed to detect such QTL are the candidate gene approach and the positional genetics approach. The somatotropic axis contains the most promising candidates in this respect, as it strongly regulates milk production. Then, the identification of favorable QTL associated with the somatotropic axis that are significantly correlated with genetic merits for milk production could lead to more effective selection programs. (C) 1999 Elsevier Science Inc. All rights reserved. [less ▲]

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See detailGrowth hormone binding protein (GHBP) during lactation in cows.
Renaville, Robert ULiege; Prandi, A.; Massart, Serge et al

in Archivio Veterinario Italiano (1999), 50

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See detailPit-1 gene polymorphism, milk yield, and conformation traits for Italian Holstein-Friesian bulls
Renaville, Robert ULiege; Gengler, Nicolas ULiege; Vrech, E. et al

in Journal of Dairy Science (1997), 80(12), 34313438

The growth hormone factor-1/pituitary-specific transcription factor Pit-1 is responsible for the expression of growth hormone in mammals. Mutations in Pit-1 have been found in growth hormone disorders of ... [more ▼]

The growth hormone factor-1/pituitary-specific transcription factor Pit-1 is responsible for the expression of growth hormone in mammals. Mutations in Pit-1 have been found in growth hormone disorders of mice and humans. We studied the eventual association between Pit-1 polymorphism using the HinfI enzyme and the milk yield and conformation traits of 89 Italian Holstein-Friesian bulls. A strategy employing polymerase chain reaction was used to amplify a 451-bp fragment from semen DNA. Digestion of polymerase chain reaction products with HinfI revealed two alleles: allele A was not digested (451-bp fragment), and allele B was cut at one restriction site, generating two fragments of 244 and 207 bp. Three patterns were observed; frequencies were 2.2, 31.5, and 66.3% for AA, AB, and BB, respectively. Fixed and mixed linear models were fitted on daughter yield deviations for milk yields and on deregressed proofs for conformation traits. Predictions were weighted using the inverse of the estimated variance of records. The models used contained mean and gene substitution effects for Pit-1 A allele as fixed effects and random sire effect for the mixed model. The A allele was found to be superior for milk and protein yields, inferior for fat percentage, and superior for body depth, angularity, and rear leg set, which is difficult to explain. A canonical transformation revealed that Pit-1 had three actions, one linked to milk yield traits and angularity, a second linked to body depth and rear leg set, and a third linked to lower fat yields and to higher angularity. [less ▲]

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See detailRelationships of growth hormone gene and milk protein polymorphisms to milk production traits in Simmental cattle
Falaki, M.; Prandi, A.; Corradini, C. et al

in Journal of Dairy Research (1997), 64(1), 47-56

The importance of milk proteins and the positive effect of administration of growth hormone (GH) on milk production, and the presence in some dairy cattle lines of greater GH concentrations prompted us to ... [more ▼]

The importance of milk proteins and the positive effect of administration of growth hormone (GH) on milk production, and the presence in some dairy cattle lines of greater GH concentrations prompted us to examine the presence of restriction fragment length polymorphism at the GH gene using the restriction enzyme TaqI and to investigate associations between this polymorphism in Simmental cows and bulls, as well as milk protein variants in Simmental cows, and milk production traits. Blood and milk were sampled from 279 Italian Simmental cows and semen was collected from 148 bulls of the same breed. Two fragment bands, denoted A and B, of 6200 and 5200 bp respectively, were examined and three patterns, AA, AB and BB, were found in both animal samples. All variants previously reported in other studies, for kappa, beta, and alpha(s1)-caseins, and beta-lactoglobulin, were found in the cows' samples. For the cows' samples, a BLUP (Best Linear Unbiased Predictor) analysis of results was performed using a REML (Restricted Maximum Likelihood) program and known heritabilities, whereas for bulls we have performed a General Linear Model analysis. The effect of GH gene polymorphism, using TaqI restriction enzyme, on milk production traits was not significant, but bulls of BB pattern had a higher breeding value for milk yield than AA bulls (P < 0.05). For the kappa-casein genotypic effects, cows of AB genotype gave milli with 1.53+/-0.70 g/kg less fat than cows of AA genotype. In addition, breeding values for milk protein content were significantly higher in BB bulls, with 0.87+/-0.32 and 0.71+/-0.34 g/kg more milk protein than AA and AB bulls respectively. Thus, our results revealed a GH gene polymorphism and indicated significant effects of milk protein polymorphisms on milk production traits in the Italian Simmental breed. [less ▲]

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See detailRelationships of k-casein - beta-lactoglobulin and alfa-lactalbumin polymorphisms with estimated breeding values for milk traits in Italian Friesian and Italian Simmental bulls.
Vrech, E.; Prandi, A.; Corradini, C. et al

in Zootecnica e Nutrizione Animale (1997), 23(3),

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See detailTAQ1 restriction fragment length polymorphism for pig growth hormone in pigs.
Nicolas, Nathalie; Fumiere, Olivier; Prandi, A. et al

in Proceedings of the 14th IVPS Congress (1996, July)

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See detailIGF-I and IGFBPs in plasma of growing Landrace and large withe pigs.
Messina, M.; Prandi, A.; Nicolas, Nathalie et al

in Proceedings of the 14th IPVS Congress (1996, July)

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See detailRelationships of polymorphisms for growth hormone and growth hormone receptor genes with milk production traits for Italian Holstein-Friesian bulls
Falaki, M.; Gengler, Nicolas ULiege; Sneyers, M. et al

in Journal of Dairy Science (1996), 79(8), 1446-1453

Allelic variation in the structural or regulatory sequences of growth hormone and its receptor genes might directly or indirectly affect milk traits. This possibility prompted us to investigate the ... [more ▼]

Allelic variation in the structural or regulatory sequences of growth hormone and its receptor genes might directly or indirectly affect milk traits. This possibility prompted us to investigate the eventual relationships of restriction fragment length polymorphisms at the locus of bovine growth hormone (using TagI and MspI restriction enzymes) and its receptor (using TaqI restriction enzyme) production traits of bulls. Holstein-Friesian bulls were used in this experiment, and data were analyzed with a fixed linear model. The restriction fragment length polymorphisms at the growth hormone locus did not affect the milk traits studied. Six restriction enzyme TaqI bands of 7.1, 6.2, 5.7, 5.4, 4.2, and 3.3 kb with nine patterns were observed after hybridization by a cDNA probe containing the coding sequences for the intracellular C-terminal part of the receptor. The effect of this polymorphism on PTA for milk protein percentage was highly significant and was favorable for the rare (6.6%) 5.7- and 5.4-kb pattern. Our results indicate that further study is needed to explain the DNA polymorphism and to obtain more definite conclusions about effects on milk traits. [less ▲]

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See detailEvaluation of insulin-like growth factor-I and its plasma binding proteins in pigs.
Renaville, Robert ULiege; Prandi, A.; Claes, Victor et al

in Archivio Veterinario Italiano (1996), 46

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See detailEffect Of Propylene Glycol Supplementation Around Parturition On Milk Yield, Reproduction Performance And Some Hormonal And Metabolic Characteristics In Dairy Cows
Formigoni, A.; Cornil, Mc.; Prandi, A. et al

in Journal of Dairy Research (1996), 63(1),

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See detailAlteration of the endocrinological status of growing calves by a glucocorticoid treatment.
Massart, Serge; Bertozzi, Carlo; Prandi, A. et al

in Journal of Animal Science (1996), 74(1), 230

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See detailPit-1 polymorphism and milk production parameters in Italian Holstein-Friesian bulls.
Renaville, Robert ULiege; Vrech, E.; Gengler, Nicolas ULiege et al

in Journal of Animal Science (1996), 74(1), 111

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See detailTaqi Growth Hormone Gene Polymorphism And Milk Production Traits In Holstein-Friesian Cattle
Falaki, M.; Sneyers, M.; Prandi, A. et al

in Animal Science (1996), 63

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See detailGH receptor gene TaqI RFLP and milk traits in Italian Holstein-Friesian and Simmental cattle.
Falaki, Mohamed; Renaville, Robert ULiege; Sneyers, Myriam et al

in Journal of Animal Science (1995), 73(Suppl 1), 113

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See detailPlasma progesterone and IGF-I levels at puberty in Italian Simmental and Friesian heifers with various genetic merit.
Prandi, A.; Rossi, C.; Tondolo, A. et al

in Journal of Animal Science (1995), 73(Suppl 1), 222

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See detailGrowth hormone, insulin-like growth factor-I and their plasma binding proteins in different cattle breeds.
Renaville, Robert ULiege; Massart, Serge; Shojae, D. et al

in Zootecnica e Nutrizione Animale (1995), 21(2),

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See detailEffects of immunization against somatostatin on growth performances and growth hormone - insulin-like growth factor I and insulin plasma levels in young bulls.
Renaville, Robert ULiege; Sneyers, M.; Massart, Serge et al

in Zootecnica e Nutrizione Animale (1994), 20(4),

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See detailTaqi Restriction-Fragment-Length-Polymorphisms For Growth-Hormone In Bovine Breeds And Their Association With Quantitative Traits
Sneyers, M.; Renaville, Robert ULiege; Falaki, M. et al

in Growth Regulation (1994), 4(3),

Detailed reference viewed: 32 (1 ULiège)