Browsing by Author "DeCampos, JS"

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    Effect of plumage colour on carcass characteristics and meat quality of Nigeria local turkeys
    (Animal Science Association of Nigeria, 2021) Yusuff, AT; Saheed, KR; Badmos, AA; DeCampos, JS; Ajao, BH; Aremu, JO
    This study examined the effect of plumage colour on carcass characteristics and meat quality of Nigeria local turkeys. Nine 14weeks local turkeys of different plumage colour (3 blacks, 3 white, and 3 mixed colour) were studied during the experiment. The birds were allotted into treatments based on the 3 plumage colours. Data taken were carcass weight, dressing percentage, prime cuts and relative organs’ weights, pH, drip loss, cook loss, meat colour and sensory attributes of cooked meat. Data collected were subjected to analysis of variance using SPSS version 25. The result obtained revealed that plumage colour affects the pH of turkey meat with a significantly higher carcass pH (5.68) from the mixed colour plumage group. It was also noted that, carcass weight, prime cuts and relative organ weight showed no significant difference (P > 0.05) irrespective of plumage colours. Similarly, the drip loss, cook loss and meat colour (lightness, redness and yellowness) were not influenced by plumage colour of the turkey while the sensory evaluation revealed that black plumaged birds group were more juicy, and had the best aroma and overall acceptability compared to others. It is therefore concluded that plumage colour affects the pH and juiciness, aroma and overall acceptability of Nigeria local turkey meat.
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    Effects of Vernonia amygdalina Leaf Meal on Male Hormone and Reproductive Organ Weight of Thryonomys swinderianus
    (Nigerian Society for Experimental Biology, 2020) Okukpe, KM; Ajayi, AS; Adeyina, AO; Sanni, KM; Adeyemo, AD; Lawal, MO; DeCampos, JS; Ajao, BH
    Grasscutter (Thryonomys swinderianus) feeds mainly on green plants especially those with succulent stems. Vernonia amygdalina the most prominent species and one of the tropical tribes of the family Asteraceae, it is so unique that every part of it has an economic importance and has been shown to be valuable nutritionally. The aim of the experiment was to determine the effect of administering Vernonia amygdalina leaf diets on testis weight and reproductive hormones of grasscutter (Thryonomys swinderianus). A total of eighteen male weaner grasscutters weighing between 281.33g and 304.21g were allotted to six treatments in a completely randomized design (CRD). The animals in treatment A (control) were given feed without Vernonia amygdalina (VA) leaf meal, B had 1g VA/kg feed, C had 2g VA/ kg feed, D had 3g VA/kg feed, E had 4g VA/kg feed and F had 5g VA/kg feed. Feeding was done for a period of seven (7) weeks and at the end of the experiment, two animals were selected per treatment after starving for about 10hours, sedated with diethylether soaked in cotton –wool and placed close to nostril to reduce handling stress before slaughtering by severing the carotid artery and the jugular vein. Blood was collected into plain bottles, centrifuged at 500rpm for 5minutes to obtain serum for hormonal tests. The hormones tested for were luteinizing hormone, follicle stimulating hormone, oetrogen and testosterone. The penis and testis were weighed and recorded after excision and removal of adhering fats. Data collected were subjected to analysis using SAS 2008 model and mean differences separated with Tukey studentized range test. The reproductive hormones and testis weights were significantly (p<0.05) affected by the Vernonia amygdalina inclusions. It showed that Treatment F had the highest luteinizing hormone while treatment A had the lowest. Treatment D had the highest follicle stimulating hormone while treatment E had the lowest. Treatment A had the highest oestrogen level while treatment B had the lowest. Treatment A had highest testosterone while treatment B had the lowest. It was observed that the addition of Vernonia amygdalina leaf meal as feed supplement of grasscutter had no adverse effect on their reproductive parameters as could be observed from the reproductive organ weight and reproductive hormone values of the animal.
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    Effects of Vernonia amygdalina leaf meal on male hormone and reproductive organ weight of Thryonomys swinderianus
    (Nigerian Society for Experimental Biology, 2020-02-29) Okukpe, KM; Ajayi, AS; Adeyina, AO; Sanni, KM; Adeyemo, AD; Lawal, MO; DeCampos, JS; Ajao, BH
    Grasscutter (Thryonomys swinderianus) feeds mainly on green plants especially those with succulent stems. Vernonia amygdalina the most prominent species and one of the tropical tribes of the family Asteraceae, it is so unique that every part of it has an economic importance and has been shown to be valuable nutritionally. The aim of the experiment was to determine the effect of administering Vernonia amygdalina leaf diets on testis weight and reproductive hormones of grasscutter (Thryonomys swinderianus). A total of eighteen male weaner grasscutters weighing between 281.33g and 304.21g were allotted to six treatments in a completely randomized design (CRD). The animals in treatment A (control) were given feed without Vernonia amygdalina (VA) leaf meal, B had 1g VA/kg feed, C had 2g VA/ kg feed, D had 3g VA/kg feed, E had 4g VA/kg feed and F had 5g VA/kg feed. Feeding was done for a period of seven (7) weeks and at the end of the experiment, two animals were selected per treatment after starving for about 10hours, sedated with diethylether soaked in cotton –wool and placed close to nostril to reduce handling stress before slaughtering by severing the carotid artery and the jugular vein. Blood was collected into plain bottles, centrifuged at 500rpm for 5minutes to obtain serum for hormonal tests. The hormones tested for were luteinizing hormone, follicle stimulating hormone, oetrogen and testosterone. The penis and testis were weighed and recorded after excision and removal of adhering fats. Data collected were subjected to analysis using SAS 2008 model and mean differences separated with Tukey studentized range test. The reproductive hormones and testis weights were significantly (p<0.05) affected by the Vernonia amygdalina inclusions. It showed that Treatment F had the highest luteinizing hormone while treatment A had the lowest. Treatment D had the highest follicle stimulating hormone while treatment E had the lowest. Treatment A had the highest oestrogen level while treatment B had the lowest. Treatment A had highest testosterone while treatment B had the lowest. It was observed that the addition of Vernonia amygdalina leaf meal as feed supplement of grasscutter had no adverse effect on their reproductive parameters as could be observed from the reproductive organ weight and reproductive hormone values of the animal.
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    Milk yield and Milk Composition of West Africa Dwarf Does as influenced by Body weight and Body Temperature
    (Kebbi State University of Science and Technology, Aliero, Nigeria, 2022-01-01) Yusuff, AT; Adeyemi, AA; Lawal, MO; DeCampos, JS; Ajao, BH; Aremu, JO
    The study was conducted to determine the effect of bodyweight and body temperature on milk yield and milk composition of West Africa Dwarf (WAD) does. A total number of sixteen lactating WAD does of different body weight were selected for the experiment. The bodyweight and body temperature of the does were taken before every milking period which lasted up to 8 weeks. Milk sample from each doe was subjected to milk composition analysis using milk analyzer. The bodyweight of the does and its corresponding milk yield were grouped into four classes (12 -15 kg, 15.1 -18 kg, 18.1-21 kg, 21.1-24 kg) while the body temperature and its corresponding milk yield and properties were portioned into three ranges (low: 36.10 – 37.00 oC; medium: 37.10 – 38.00 oC; high: 38.10 – 39.00 oC). The data obtained were subjected to one-way analysis of variance of completely randomized design. The results revealed that bodyweight significantly (P<0.05) affects milk yield but not milk composition while body temperature range of 38.10-39.00 oC influences higher milk yield (580.60 ml) It is therefore concluded that WAD does has a relatively stable milk composition irrespective of body temperature or bodyweight while the does of higher body weight produce more milk. It is therefore recommended that body temperature and bodyweight should be among the considerable criteria when selecting WAD goats for dairy purpose