Production De Chevreaux Lourds. I. — Influence De l'ÂGE Et Du Mode De Sevrage Sur Les Performaxces Des Chevreaux Abattus a 26,5-29 Kg

Fehr, Pierre Morand; Sauvant, Daniel; Hervieu, J.; Cucci, A.; Duborgel, Élizabeth

doi:10.1051/animres:19760208

Cited by 8 publications

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“…In the full model, females lost their advantage after weaning, which means that male kids may be more resistant to the stress of weaning. In contrast, FEHR and SAUVANT (1976) reported that females were more resistant to weaning stress. Heavy kids had steeper growth curves than light kids before weaning (P < 0.01) while the differences were lost after weaning (P > 0.05).…”

Section: Repeated Statement Analysesmentioning

confidence: 90%

Growth Curves of Turkish Saanen Goats’ Kids Grouped for Weight and Body Mass Index

et al. 2005

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Growth curves and weaning stress differences were investigated in Turkish Saanen kids grouped for their weight and Body Mass Index (BMI = weight/height 2 ). Data included 884 records collected from 61 Turkish Saanen kids raised in Canakkale, Turkey. Slopes were calculated for each kid and were analyzed as data using ordinary least squares, and repeated weights for each kid were analyzed using various covariance structures. Differences between male and female kids were small and non-significant before weaning (P = 0.55), while larger (P=0.06) after weaning. Heavy animals grew faster than light animals before weaning (P < 0.01) but lost their advantage after weaning (P > 0.05). Fat animals (high BMI) grew faster than lean animals (low BMI) before weaning (P < 0.01) while the differences slightly diminished after weaning (P=0.04). This may be because light and lean kids were not affected from the weaning shock as much as the heavy and fat kids, which had stuttered growth after weaning. Fit statistics indicated that first-order ante dependence was the best fit covariance structure for these data. Analyses specifying random model and covariance structures did not have an advantage over an approach where slopes were manually calculated and analyzed as data using ordinary least squares.Key Words: turkish Saanen goats, growth curves, repeated data, slopes, covariance structures Zusammenfassung Titel der Arbeit: Wachstumskurven von unterschiedlichen Lebensgewicht-und Körpermasseindex-Gruppen bei türkischen Saanen Ziegenlämmern Die Wachstumskurven und der Absetzstress wurden bei türkischen Saanen Ziegenlämmern untersucht, aufgeteilt in Gewichts-und Körpermasseindexgruppen (BMI=Lebendgewicht/Widerristhöhe 2 ). Einbezogen wurden 884 Lebendgewichtdaten von 61 Ziegen des Versuchsbetriebes der Canakkale Universität. Die Regressionskoeffizienten von Lebendgewichtsdaten der einzelnen Tiere wurden mit unterschiedlichen statistischen Methoden, die Unterschiede in ihrer Kovarianzstruktur aufwiesen, analysiert. Bei den Regressionskoeffizienten wurden vor dem Absetzen im Gegensatz zu der Zeit nach dem Absetzen zwischen den Geschlechtern nicht signifikante geringe Unterschiede festgestellt (P=>0,05). Vor dem Absetzen wuchsen die fetteren, schwereren Tiere (höheren BMI) schneller als die magereren, leichteren (P=<0,01). Nach dem Absetzen verringerten sich diese Unterschiede signifikant zwischen den schweren und leichten bzw. fetten und mageren Tieren. Obwohl sich die Werte der Regressionskoeffizienten nach dem Absetzen in allen Gruppen verringern, sind die Unterschiede bei den schweren d. h. fetteren Tieren zwischen der Zeit vor bzw. nach dem Absetzen gröβer als bei den leichteren Tieren. Für die analysierten Daten zeigte die "first-order ante dependence" Kovarianzstruktur die besten Anpassungsparameter. Die Analysen, welche spezifische Modell-und Kovarianzstrukturen hatten, zeigten keinen Vorteil gegenüber den vorgenannten, wobei die Regressionskurven manuell errechnet und mit der üblichen Methode der kleinsten Quadrate analys...

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Section: Repeated Statement Analysesmentioning

confidence: 90%

Growth Curves of Turkish Saanen Goats’ Kids Grouped for Weight and Body Mass Index

et al. 2005

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“…(Fehr, 1972 ;Fehr et Sauvant, 1976 (Ballard et Oliver, 1965 ;Bartley, Freedland et Black, 1966) ou le sevrage (Howarth, Baldwin et Ronning, 1968). En revanche, dans le tissu adipeux, l'adaptation du métabolisme lipidique en relation avec la croissance et le développement des fonctions digestives du rumen n'a été que partiellement abordée chez les jeunes ruminants (Howarth, Baldwin et Ronning, 1968 ; MorandFehr, 1985 .…”

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Lipogenèse des tissus adipeux de chevreaux sevrés à 4, 6 et 8 semaines

Bas¹,

Rouzeau²,

Morand-Fehr³

1986

Reprod. Nutr. Dévelop.

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Summary. Lipogenesis in adipose tissues of kids weaned at 4, 6 and 8 weeks.Adipose deposits and their lipogenic enzymes were studied on 27 young Alpine male kids. They were weaned either at 28, 42 or 56 days of age and for each age at weaning, 3 animals were slaughtered unweaned (P 0), or 14 ( P + 14) or 56 (P + 56) days after weaning. They received milk replacer ad libitum from day 5 after birth to weaning and concentrate, hay and water from a week before weaning to slaughter.The adipose tissues were very developed in the abdomen in P 0 and P + 56 animals. Subcutaneous tissues were scarce. All adipose tissues in the P + 14 were lighter. The older the animals, the greater was the reduction in adipose tissue weight between P 0 and P + 14. But this loss was proportionally higher in younger animals. In all P + 14 animals the perirenal tissues showed higher loss.Lipoprotein lipase (LPL) activity was high in abdominal adipose tissues of P 0 and P + 56 kids, particularly in the omental tissue, but was very low in sternal adipose tissue.LPL activity had a low value 14 days after weaning but its specific activity roughly reached the unweaned LPL value 56 days after weaning.By contrast, acetyl CoA carboxylase (ACX) activity was very low in omental adipose tissue but existed even in unweaned kids. Fifty-six days after weaning, this activity was high in 28-day weaned kids. The activity of both glucose-6-phosphate dehydrogenase (G6PDH) and malic enzyme (EM) was high in unweaned kids, particularly at 42 days. Surprisingly, EM activity was higher than G6PDH activity in kids weaned for 56 days. Thus, in ad libitum concentrate-fed kids, the ATP-citrate lyase EM pathway seemed to be active and important for lipogenesis.Introduction.

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Effect of feeding methods and age at slaughter on growth performances and carcass characteristics of entire young male goats

Fehr

Sauvant

Delage

et al. 1976

Livestock Production Science

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Production De Chevreaux Lourds. I. — Influence De l'ÂGE Et Du Mode De Sevrage Sur Les Performaxces Des Chevreaux Abattus a 26,5-29 Kg

Cited by 8 publications

References 0 publications

Growth Curves of Turkish Saanen Goats’ Kids Grouped for Weight and Body Mass Index

Growth Curves of Turkish Saanen Goats’ Kids Grouped for Weight and Body Mass Index

Lipogenèse des tissus adipeux de chevreaux sevrés à 4, 6 et 8 semaines

Effect of feeding methods and age at slaughter on growth performances and carcass characteristics of entire young male goats

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