| Titre : |
Influence de l'alimentation sur la reproduction des petits ruminants. |
| Type de document : |
texte imprimé |
| Auteurs : |
Imène Djaalab, Auteur ; Omar Bouaziz, Directeur de thèse |
| Editeur : |
جامعة الإخوة منتوري قسنطينة |
| Année de publication : |
2017 |
| Importance : |
264 f. |
| Format : |
30 cm. |
| Note générale : |
2 copies imprimées disponibles
|
| Langues : |
Français (fre) |
| Catégories : |
Français - Anglais
Sciences Vétérinaires
|
| Tags : |
Brebis Ouled Djellal gain moyen quotidien métabolites sanguins note d'état corporel rebuts de dattes stade physiologique |
| Index. décimale : |
636 Sciences Vétérinaires |
| Résumé : |
The purpose of this study was to investigate the impact of nutrition on the productive
performances of reproductive ewes through the valorization of local food resources. Thus
partial or total barely substitution by dates wastes is undertaken in order to evaluate the
influence of energy complementation on the metabolic profile and the ponderal performances
of the ewes and their lambs.
The study was conducted on 135 healthy, multiparous Ouled Djellal ewes aged between 3 and
4 years, belonging to the experimental farm of ITELV-Ain M'lila located in the East of
Algeria.
The physico-chemical analysis of the feed showed that concentrate and hay are the richest in
dry matter, organic matter and cell walls (NDF and ADF). Green forages are the richest in
total nitrogen and total ash, contrary to the dates wastes that are the most lignified (ADL). The
evaluation of the chemical composition of rations (0% R, 25% R, 50% R and 75% R)
distributed at the end of pregnancy did not revealed any significant difference except for the
100% incorporated ration of dates wastes which shows the highest rate in ADF and cellulose
and the lowest rate in hemicellulose.
The study of the influence of the physiological stage on various biochemical blood parameters
in the Ouled Djellal ewes of the semi-arid zones showed that the pregnancy or lactation state
affect significantly the serum levels of glucose (p<0,001), cholesterol (p<0,001), triglyceride
(p=0,0003), total protein (p=0,0007), urea (p<0,0001), albumin (p<0,0001), creatinine
(p<0,0001), bilirubine (p<0,0001), calcium (p=0,01), phosphate (p=0,005), magnesium
(p<0,0001) and iron (p=0,0001) as well as the enzyme activity of ASAT (p=0,0004), ALAT
(p<0,0001) and GGT (p=0,0005).
The metabolic profile of ewes at the end of pregnancy, supplemented with 25% of dates
wastes, is characterized by hypoglycemia (p=0,0002) accompanied by significant
hypercholesterolemia (p=0,008) and hypertriglyceridemia (p<0,0001). While, the levels of
total proteins (p<0,0001), albumin (p=0,0006), urea (p=0,005), creatinine (p=0,002) and
bilirubin (p=0,002) were significantly lower in group supplemented with 50% of dates wastes,
as well as the concentrations of ASAT (p<0,05), ALAT (p=0,006), GGT (p<0,01),
phosphorus (p=0,002), magnesium (p<0,0001), sodium (p=0,0003) and iron (p=0,01) showed
a significant decrease in the same group.
The analysis of the data relating to the performances of production shows clearly that Ouled
Djellal ewes supplemented with 25% and 50% of date wastes improved significantly their of
body condition score (p<0,0001) and their dairy production (p<0,0001). Which reflected
positively the performance of their products growth. Contrary to the birth, the 20 days old
lambs resulting from the supplemented mothers with 50% are significantly heaviest
(11,91±0,41 kg ; p<0,0001) with the highest growth rate equal to 302,9±18,32 g/j ; p<0,0001).
On the other hand, at 1 month of age, the feed mode had a notable effect on the average
weight and GMQ of the lambs of the 25% batch (335,6±55 g/j ; p>0,05).
Despite of the low level of dates wastes in crude proteins the use of this energetic co-product
during steaming remains efficient for the improvement of growth performance in lambs
through the improvement of the diary production of their mothers. |
| Diplôme : |
Doctorat en sciences |
| En ligne : |
../theses/veterinaire/DJA7078.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10523 |
Influence de l'alimentation sur la reproduction des petits ruminants. [texte imprimé] / Imène Djaalab, Auteur ; Omar Bouaziz, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 264 f. ; 30 cm. 2 copies imprimées disponibles
Langues : Français ( fre)
| Catégories : |
Français - Anglais
Sciences Vétérinaires
|
| Tags : |
Brebis Ouled Djellal gain moyen quotidien métabolites sanguins note d'état corporel rebuts de dattes stade physiologique |
| Index. décimale : |
636 Sciences Vétérinaires |
| Résumé : |
The purpose of this study was to investigate the impact of nutrition on the productive
performances of reproductive ewes through the valorization of local food resources. Thus
partial or total barely substitution by dates wastes is undertaken in order to evaluate the
influence of energy complementation on the metabolic profile and the ponderal performances
of the ewes and their lambs.
The study was conducted on 135 healthy, multiparous Ouled Djellal ewes aged between 3 and
4 years, belonging to the experimental farm of ITELV-Ain M'lila located in the East of
Algeria.
The physico-chemical analysis of the feed showed that concentrate and hay are the richest in
dry matter, organic matter and cell walls (NDF and ADF). Green forages are the richest in
total nitrogen and total ash, contrary to the dates wastes that are the most lignified (ADL). The
evaluation of the chemical composition of rations (0% R, 25% R, 50% R and 75% R)
distributed at the end of pregnancy did not revealed any significant difference except for the
100% incorporated ration of dates wastes which shows the highest rate in ADF and cellulose
and the lowest rate in hemicellulose.
The study of the influence of the physiological stage on various biochemical blood parameters
in the Ouled Djellal ewes of the semi-arid zones showed that the pregnancy or lactation state
affect significantly the serum levels of glucose (p<0,001), cholesterol (p<0,001), triglyceride
(p=0,0003), total protein (p=0,0007), urea (p<0,0001), albumin (p<0,0001), creatinine
(p<0,0001), bilirubine (p<0,0001), calcium (p=0,01), phosphate (p=0,005), magnesium
(p<0,0001) and iron (p=0,0001) as well as the enzyme activity of ASAT (p=0,0004), ALAT
(p<0,0001) and GGT (p=0,0005).
The metabolic profile of ewes at the end of pregnancy, supplemented with 25% of dates
wastes, is characterized by hypoglycemia (p=0,0002) accompanied by significant
hypercholesterolemia (p=0,008) and hypertriglyceridemia (p<0,0001). While, the levels of
total proteins (p<0,0001), albumin (p=0,0006), urea (p=0,005), creatinine (p=0,002) and
bilirubin (p=0,002) were significantly lower in group supplemented with 50% of dates wastes,
as well as the concentrations of ASAT (p<0,05), ALAT (p=0,006), GGT (p<0,01),
phosphorus (p=0,002), magnesium (p<0,0001), sodium (p=0,0003) and iron (p=0,01) showed
a significant decrease in the same group.
The analysis of the data relating to the performances of production shows clearly that Ouled
Djellal ewes supplemented with 25% and 50% of date wastes improved significantly their of
body condition score (p<0,0001) and their dairy production (p<0,0001). Which reflected
positively the performance of their products growth. Contrary to the birth, the 20 days old
lambs resulting from the supplemented mothers with 50% are significantly heaviest
(11,91±0,41 kg ; p<0,0001) with the highest growth rate equal to 302,9±18,32 g/j ; p<0,0001).
On the other hand, at 1 month of age, the feed mode had a notable effect on the average
weight and GMQ of the lambs of the 25% batch (335,6±55 g/j ; p>0,05).
Despite of the low level of dates wastes in crude proteins the use of this energetic co-product
during steaming remains efficient for the improvement of growth performance in lambs
through the improvement of the diary production of their mothers. |
| Diplôme : |
Doctorat en sciences |
| En ligne : |
../theses/veterinaire/DJA7078.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10523 |
|
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