Quality attributes of cheese produced from milk obtained from three Nigerian breeds of cattle (Wh... more Quality attributes of cheese produced from milk obtained from three Nigerian breeds of cattle (White Fulani, Muturu and Red Borori) were investigated. There were significant differences in the pH and cheese yield among the treatments (p<0.05). White Fulani, Muturu and red Borori cheese had moisture content of 72.51%, 70.03% and 65.42% respectively. There were significant differences in the moisture content, crude protein and crude fat of the cheeses (p<0.05). Cheeses from the three breeds of cattle were stable upon storage for the first 24 hours but further refrigeration slightly decreases the weight of white Fulani and Muturu cheese. The sensory evaluation of the cheeses showed that the three cheeses have good acceptability by consumers but red Borori cheese is mostly preferred for all the properties considered.
A total number of 638 adult sheep comprising of 414 Uda and 224 Balami breeds of sheep were rando... more A total number of 638 adult sheep comprising of 414 Uda and 224 Balami breeds of sheep were randomly sampled from markets in Osun and Oyo states of South Western Nigeria. 17 linear measurements were taken on the animals to classify these breeds of sheep. The characters measured include Rump Width (RW), Rump Length (RL), Tail Length (TL), Wither Height (WH), Heart Girth (HG), Pouch Girth (PG), Rump Height (RH), Ear Length (EL), Foreleg Length (FLL), Rear-leg Length (RLL), Body Length (BL), Shoulder Width (SW), Neck Circumference (NC), Head Length (HeL), Head Width (HW), Horn Length (HL), and Hock Length (HoL). Partial correlation of all variables, controlling for breeds, revealed that all variables but correlation of RH with FLL and RLL were highly significant. The significant correlation coefficients obtained from this study range from 0.250 to 0.870 (p<0.01). Principal component analysis of factor solution where two components that explained a tangible proportion of total variance were extracted revealed that 66.91% and 57.43% of the total variance were explained for Balami and Uda sheep respectively. With varimax rotation of component loadings, BL, WH, HG, RH, EW, TL, EL, HeL and HW loaded on the first components while RL, FLL, RLL, NC, HL and HoL loaded on the second components for Uda sheep. For Balami sheep, WH, HG, PG, RH, FLL, RLL, NC, HeL, HL and HoL loaded on the first component while BL, RW, RL, TL, SW and HW loaded on the second component. It was concluded that traits that are associated with bone development especially cranial measurements best describe the two breeds investigated.
Adequate knowledge of diversities within and between animal populations will not only help in red... more Adequate knowledge of diversities within and between animal populations will not only help in reducing misidentification in animal husbandry but also aid conservation of many important endangered alleles. A total number of 1195 animals comprising 380 Yankasa sheep, 414 Uda sheep, 224 Balami sheep and 177 West African Dwarf (WAD) sheep were sampled from Osun and Oyo states, South Western Nigeria. Yankasa and WAD were sampled from traditionally managed flock while Balami and Uda sheep were obtained from markets in these states. Seventeen (17) morphometric characters were measured to study their phenotypic variations. The characters measured include rump width (RW), rump length (RL), tail length (TL), wither height (WH), heart girth (HG), paunch girth (PG), rump height (RH), ear length (EL), foreleg length (FLL), rear-leg length (RLL), body length (BL), shoulder width (SW), neck circumference (NC), head length (HeL), head width (HW), horn length (HL) and hock length (HoL). Stepwise multifactorial discriminant analysis was explored to check traits that best differentiate the Nigerian sheep. Length of tail was the most discriminating character among the eight distinguishing traits found. Longest genetic distance was found between WAD and Uda sheep while the closest breeds were Balami and Uda, as indicated by the Euclidian distance. The large Euclidian distance obtained for genetic gap between Uda and WAD sheep gives prospect for improvement if they are crossbred. Since Uda and WAD have been reared successfully in the arid Northern region and trypano-endemic region of Southern humid Nigeria, respectively, crossing WAD with Uda will produce a relatively large, heat tolerant and trypanotolerant hybrid.
The use of path analysis will not only produce a regression equation for prediction of body weigh... more The use of path analysis will not only produce a regression equation for prediction of body weight but also partition correlation between two traits into direct effects of one on other and indirect effects caused by other characters which may be of importance in selection. A total number of 2641 mature cocks comprising of 1782 Yoruba ecotype and 859 Fulani ecotype were sampled from markets in Osun state, southwest Nigeria. Live weight (LW) and eight morphometric characters were measured from these birds. The biometric traits were keel length (KL), chest circumference (CC), thigh length (TL), wing length (WL), body length (BL), drum stick (DS), breast length (BrL) and shank length (SL). T-test was used to check the significance of variation in biometric traits between the two ecotypes. Correlation analysis was used to check degree of association between these traits. Regression and path analysis was also explored. There were significant differences in keel length, thigh length, wing length, body length, breast length and shank length between the two genotypes. All traits considered in Yoruba ecotype but drum stick showed significant (p<0.05) positive correlation with body weight whereas in Fulani ecotype all characters but chest circumference showed a significant (p<0.05) correlation with body weight. Body length and breast length had significant (p<0.05) direct effect on the body weight in Yoruba ecotype whereas significant (p<0.05) path coefficients were obtained for chest circumference, wing length and breast length in Fulani ecotype. Body length and breast length had the highest direct effect on body weight in Yoruba and Fulani ecotype cocks respectively. The highest indirect effect was obtained for breast length through drum stick in Fulani ecotype, while in Yoruba ecotype the highest indirect effect was obtained for body length through chest circumference. Body length and breast length can be deduced as the most important morphometric traits in determining body weight of Yoruba and Fulani ecotype cocks respectively.
Quality attributes of cheese produced from milk obtained from three Nigerian breeds of cattle (Wh... more Quality attributes of cheese produced from milk obtained from three Nigerian breeds of cattle (White Fulani, Muturu and Red Borori) were investigated. There were significant differences in the pH and cheese yield among the treatments (p<0.05). White Fulani, Muturu and red Borori cheese had moisture content of 72.51%, 70.03% and 65.42% respectively. There were significant differences in the moisture content, crude protein and crude fat of the cheeses (p<0.05). Cheeses from the three breeds of cattle were stable upon storage for the first 24 hours but further refrigeration slightly decreases the weight of white Fulani and Muturu cheese. The sensory evaluation of the cheeses showed that the three cheeses have good acceptability by consumers but red Borori cheese is mostly preferred for all the properties considered.
A total number of 638 adult sheep comprising of 414 Uda and 224 Balami breeds of sheep were rando... more A total number of 638 adult sheep comprising of 414 Uda and 224 Balami breeds of sheep were randomly sampled from markets in Osun and Oyo states of South Western Nigeria. 17 linear measurements were taken on the animals to classify these breeds of sheep. The characters measured include Rump Width (RW), Rump Length (RL), Tail Length (TL), Wither Height (WH), Heart Girth (HG), Pouch Girth (PG), Rump Height (RH), Ear Length (EL), Foreleg Length (FLL), Rear-leg Length (RLL), Body Length (BL), Shoulder Width (SW), Neck Circumference (NC), Head Length (HeL), Head Width (HW), Horn Length (HL), and Hock Length (HoL). Partial correlation of all variables, controlling for breeds, revealed that all variables but correlation of RH with FLL and RLL were highly significant. The significant correlation coefficients obtained from this study range from 0.250 to 0.870 (p<0.01). Principal component analysis of factor solution where two components that explained a tangible proportion of total variance were extracted revealed that 66.91% and 57.43% of the total variance were explained for Balami and Uda sheep respectively. With varimax rotation of component loadings, BL, WH, HG, RH, EW, TL, EL, HeL and HW loaded on the first components while RL, FLL, RLL, NC, HL and HoL loaded on the second components for Uda sheep. For Balami sheep, WH, HG, PG, RH, FLL, RLL, NC, HeL, HL and HoL loaded on the first component while BL, RW, RL, TL, SW and HW loaded on the second component. It was concluded that traits that are associated with bone development especially cranial measurements best describe the two breeds investigated.
Adequate knowledge of diversities within and between animal populations will not only help in red... more Adequate knowledge of diversities within and between animal populations will not only help in reducing misidentification in animal husbandry but also aid conservation of many important endangered alleles. A total number of 1195 animals comprising 380 Yankasa sheep, 414 Uda sheep, 224 Balami sheep and 177 West African Dwarf (WAD) sheep were sampled from Osun and Oyo states, South Western Nigeria. Yankasa and WAD were sampled from traditionally managed flock while Balami and Uda sheep were obtained from markets in these states. Seventeen (17) morphometric characters were measured to study their phenotypic variations. The characters measured include rump width (RW), rump length (RL), tail length (TL), wither height (WH), heart girth (HG), paunch girth (PG), rump height (RH), ear length (EL), foreleg length (FLL), rear-leg length (RLL), body length (BL), shoulder width (SW), neck circumference (NC), head length (HeL), head width (HW), horn length (HL) and hock length (HoL). Stepwise multifactorial discriminant analysis was explored to check traits that best differentiate the Nigerian sheep. Length of tail was the most discriminating character among the eight distinguishing traits found. Longest genetic distance was found between WAD and Uda sheep while the closest breeds were Balami and Uda, as indicated by the Euclidian distance. The large Euclidian distance obtained for genetic gap between Uda and WAD sheep gives prospect for improvement if they are crossbred. Since Uda and WAD have been reared successfully in the arid Northern region and trypano-endemic region of Southern humid Nigeria, respectively, crossing WAD with Uda will produce a relatively large, heat tolerant and trypanotolerant hybrid.
The use of path analysis will not only produce a regression equation for prediction of body weigh... more The use of path analysis will not only produce a regression equation for prediction of body weight but also partition correlation between two traits into direct effects of one on other and indirect effects caused by other characters which may be of importance in selection. A total number of 2641 mature cocks comprising of 1782 Yoruba ecotype and 859 Fulani ecotype were sampled from markets in Osun state, southwest Nigeria. Live weight (LW) and eight morphometric characters were measured from these birds. The biometric traits were keel length (KL), chest circumference (CC), thigh length (TL), wing length (WL), body length (BL), drum stick (DS), breast length (BrL) and shank length (SL). T-test was used to check the significance of variation in biometric traits between the two ecotypes. Correlation analysis was used to check degree of association between these traits. Regression and path analysis was also explored. There were significant differences in keel length, thigh length, wing length, body length, breast length and shank length between the two genotypes. All traits considered in Yoruba ecotype but drum stick showed significant (p<0.05) positive correlation with body weight whereas in Fulani ecotype all characters but chest circumference showed a significant (p<0.05) correlation with body weight. Body length and breast length had significant (p<0.05) direct effect on the body weight in Yoruba ecotype whereas significant (p<0.05) path coefficients were obtained for chest circumference, wing length and breast length in Fulani ecotype. Body length and breast length had the highest direct effect on body weight in Yoruba and Fulani ecotype cocks respectively. The highest indirect effect was obtained for breast length through drum stick in Fulani ecotype, while in Yoruba ecotype the highest indirect effect was obtained for body length through chest circumference. Body length and breast length can be deduced as the most important morphometric traits in determining body weight of Yoruba and Fulani ecotype cocks respectively.
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Papers by Jolaoye Alaba
Fulani, Muturu and Red Borori) were investigated. There were significant differences in the pH and
cheese yield among the treatments (p<0.05). White Fulani, Muturu and red Borori cheese had moisture
content of 72.51%, 70.03% and 65.42% respectively. There were significant differences in the moisture
content, crude protein and crude fat of the cheeses (p<0.05). Cheeses from the three breeds of cattle
were stable upon storage for the first 24 hours but further refrigeration slightly decreases the weight of
white Fulani and Muturu cheese. The sensory evaluation of the cheeses showed that the three cheeses
have good acceptability by consumers but red Borori cheese is mostly preferred for all the properties
considered.
Fulani, Muturu and Red Borori) were investigated. There were significant differences in the pH and
cheese yield among the treatments (p<0.05). White Fulani, Muturu and red Borori cheese had moisture
content of 72.51%, 70.03% and 65.42% respectively. There were significant differences in the moisture
content, crude protein and crude fat of the cheeses (p<0.05). Cheeses from the three breeds of cattle
were stable upon storage for the first 24 hours but further refrigeration slightly decreases the weight of
white Fulani and Muturu cheese. The sensory evaluation of the cheeses showed that the three cheeses
have good acceptability by consumers but red Borori cheese is mostly preferred for all the properties
considered.