Original scientific paper

Effects of different planes of meat offals and soybean meal on the morphological characteristics of West African dwarf buck’s spermiogram

Matthew Olugbenga Oyeyemi
Victoria Olusola Adetunji
Oyebanji Olubukola

Abstract

Twenty healthy West African dwarf goats aged between 18 and 24 months old weighing 13-15 kg were assigned randomly to four groups (T1-T4). The experiment lasted for 14 weeks and animals were fed on concentrate containing varying levels of meat offal and soybean meal. Group T1 was fed on 100% soybean meal, group T2 was fed on 35% meat offal and 65% soybean meal, group T3 was fed on 70% meat offal and 30% soybean meal, while group T4 was fed on 100% meat offal. Semen samples were collected from the animals with a weekly interval between collections. Morphological characteristics and concentration of the sperm cells were analyzed. Primary, secondary and tertiary abnormalities were present in all four groups. Secondary abnormalities were the highest to occurr in all these three categories. Looped tail was the highest to occur in all the groups, with group T4 having the highest number and percentage of this abnormality. There was no significant difference among the groups for looped tail abnormality (P<0.05). Also, there was no significant difference (P<0.05) among the four groups for total secondary abnormalities observed during the experiment. Primary abnormality of rudimentary tail in-group T3 was the highest to occur among the four groups, even though there was no significant difference (P<0.05) in the total number of primary abnormalities present. Tertiary abnormalities of stumpy tail were the highest occurring among the groups; there was no significant difference (P<0.05) in the total number of tertiary abnormalities. The total percentage of abnormalities i.e. primary, secondary and tertiary for groups T1-T4 were 8.15%, 6.63%, 11.47% and 9.02%, respectively. The values obtained in each group are less than the 20% abnormalities recommended for effective performance. It can therefore be concluded that soybean meal and meat offal as a source of protein in animals have no negative effect on the morphological characteristics and breeding performance of West African dwarf goat bucks.

Keywords

meat offal; soybean meal; buck spermiogram; morphology

Hrčak ID:

5076

URI

https://hrcak.srce.hr/5076

Publication date:

20.4.2006.

Visits: 1.234 *