Evaluation of jojoba meal as a potential supplement in the diet of broiler breeder females during laying.
1. This study was undertaken to investigate whether jojoba meal can be used as a food supplement during the laying period of chickens. 2. The size of eggs laid were smaller and the overall production rate was lower compared to control birds on food without jojoba meal supplementation. Furthermore, both ovary and oviduct weights were lower in jojoba fed birds. 3. This lowering of egg size and production rate was caused by factors present in jojoba which interfere with follicle growth, yolk deposition, progesterone production and the follicular maturation processes, resulting in the ovulation of smaller follicles and a lower ovulation rate.
Vermaut
S
S
Laboratory of Physiology and Immunology of Domestic Animals, Heverlee, Belgium.
De Coninck
K
K
Bruggeman
V
V
Onagbesan
O
O
Flo
G
G
Cokelaere
M
M
Decuypere
E
E
D000821:Animal Feed; D000818:Animals; D002645:Chickens / Q000502:physiology*; D004032:Diet; D019587:Dietary Supplements; D004531:Eggs; D005260:Female; D006080:Ovarian Follicle / Q000187:drug effects / Q000502:physiology; D010053:Ovary / Q000187:drug effects / Q000254:growth & development / Q000502:physiology*; D010058:Oviposition / Q000187:drug effects / Q000502:physiology*; D010060:Ovulation / Q000187:drug effects* / Q000502:physiology; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology*; D011374:Progesterone / Q000378:metabolism
D010936:Plant Extracts; D011374:Progesterone